A ball is dropped from rest and takes 1.3 s to hit the ground. from what height was it dropped?

Answers

Answer 1

Initial velocity=0

Height=45m

G=10m/s^2

By the 2 nd equation of motion …(Under free fall)-

H = ut + 1/2 g t^2

45 = 0 + {1/2 * 10 * (t^2)} •: [0*t=0]

45 = 5 t^2

45/5 = t^2

9 = t^2

√9=t

3=t

Answer-: The time taken would be 1.3 seconds to reach the ground.


Related Questions

what is a example for a proportion

Answers

Answer: the time taken by train to cover 50km per hour is equal to the time taken by it to cover the distance of 250km for 5 hours

Step-by-step explanation:

You divide then together

Practice
1 Use the figures shown to complete parts a th
a Describe the sequence of translations used to move Figure 1 onto Figure 2
b. Determine the coordinates of the image of Figure 1 if it is translated 1 unit horizontally
and 8 units vertically
c Explain how you determined the coordinates part (b)
a Verify your answer to part (b) by graphing the image Label it Figure 3
2 Use a coordinate plane to complete parts (a) through (d)
a Plot the given points and connect them with straight lines in the order in which they are given.
Connect the last point to the first paint to complete the figure Label the figure A
(-3-6) (-3-3), (0, 0), (3-3) (3, -61, (0-3)
b Translate the figure in part (a)-3 units vertically Lebel the image B
e Translate the figure in part (a) 6 units vertically and 3 units horizontally Label the image C
d. Translate the figure in part (a)-3 units horizontally and 6 units vertically Labei the image D

Answers

Answer:

connect the last point to the first point to complete the question

translate the figure in part

translate the figure in part 3 units horizontal y and 6 units vertically

Step-by-step explanation:

Answer:

Step-by-step explanation:

HELP URGENT!! EVERYTHING INCLUDED IN PHOTO!!

Answers

Answer:

Part A is 63-7.5

Step-by-step explanation:

Tom and ben both get paid the same amount for every hour they work. tom worked 5 hours and ben worked 6 hours. together, they received r1 430. how much money did each receive?

Answers

Tom and Ben received 650 and 780 respectively.

Let the amount paid to each for every hour they work be x. Now, forming the equation as per the given information in question.

5x + 6x = 1430

Performing addition to find the value of x.

11x = 1430

Shifting 11 to Right Hand Side of the equation

x = 1430 ÷ 11

Performing division to find the value of x

x = 130

Now finding the amount received by Tom and Ben based on the number of hours they worked.

Amount received by Tom = 5x

Amount received by Tom = 5 × 130

Amount received by Tom = 650

Amount received by Ben = 6x

Amount received by Ben = 6 × 130

Amount received by Ben = 780

Therefore, the amount received by Tom and Ben are 650 and 780 respectively.

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John Picks Up 2 Apples And Removed 1, And He Picked Up 10 Apples And Gave Away a Half Of Apples To Anyone! John Finally Picks Up 3 Apples And 6 Oranges, How Many Did John Have?

Write Down Your Answers Below!

Subjects : Mathematics, Life, John's Fruit Blast!

Answers

Answer:

14 1/2 fruits

Step-by-step explanation:

솓ㄱㄷ 샤 냐 :)
THERE...........

Answers

Answer:

60 percent

I think it is 60 but you might need a more certifyd answer

Answer:  250%

==================================================

Explanation:

A is 40% of B

This translates to the equation A = 0.40B or A = 0.4B

This is because 40% converts to 0.40 in decimal form

Let's divide both sides by 0.4 to isolate B

A = 0.4B

A/0.4 = B

B = (1/0.4)A

B = 2.5A

This shows that B is 250% of A

------------

Another approach:

40% = 40/100 = 2/5

"A is 40% of B" is the same as "A is 2/5 of B

So,

A = (2/5)*B

5A = 2B

2B = 5A

B = 5A/2

B = (5/2)A

B = 2.5A

which is another way to show that B is 250% of A

what is the answer to this problem?

Answers

10

_

8

Step-by-step explanation:

corect me if i wrong

who discovered zero?​​

Answers

Answer:

"Zero and its operation are first defined by [Hindu astronomer and mathematician] Brahmagupta in 628," said Gobets. He developed a symbol for zero: a dot underneath numbers.

Independent Practice For each pair of expressions below, without substituting in specific values, determine which of the expressions in the given pairs is larger. Explain your reasoning in a sentence or two.​

Answers

In the first pair of numbers  15/x² + 6 is larger and in the second pair of numbers (s² + 2)/(s² + 1) is larger

What is Expression in Mathematics?

Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between.

Given is two pairs of expressions. From the image given , we can write them as -

Pair 1 f(x) = 15/x² + 6     and       h(x) = 15/x² + 7

Pair 2 → f(s) = (s² + 2)/(s² + 1)    and       h(s) = (s² + 4)/(s² + 3)  

We can compare which expression is larger in both the pairs without substituting any specific value as follows -

Pair 1 →  f(x) = 15/x² + 6     and       h(x) = 15/x² + 7.

The numerator is same in both the functions.

Now, for any value of x ∈ R →  x² + 6 < x² +7  by 1. Therefore, f(x) > h(x)

Pair 2f(s) = (s² + 2)/(s² + 1)    and      h(s) = (s² + 4)/(s² + 3)  

f(s) = (s² + 2)/(s² + 1) = [(s² + 1) + 1]/(s² + 1) = 1 + 1/(s² + 1)

h(s) =  (s² + 4)/(s² + 3) =  [(s² + 3) + 1]/(s² + 3) = 1 + 1/(s² + 3)  

So, we can write that -

f(s) = 1 + 1/(s² + 1)

h(s) = 1 + 1/(s² + 3)  

Now for any value of s →  (s² + 1) < (s² + 3)  by 2. So →  1/(s² + 1) > 1/(s² + 3). Therefore → 1 + 1/(s² + 1) > 1 + 1/(s² + 3). Finally, we can write -

(s² + 2)/(s² + 1) > (s² + 4)/(s² + 3)

Therefore, in the first pair of numbers  15/x² + 6 is larger and in the second pair of numbers (s² + 2)/(s² + 1) is larger.

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To make pizza sauce for 2 pizzas, you need 2 cans of tomato sauce for every 1 can of tomato paste. If you have 6 cans of tomoto sauce, how many cans of tomatoe paste do you need and how many pizzas can you make?

Answers

Answer:

3 cans of tomato paste and 6 should be correct

Previous
5



Question
Find −115+(−35). Write your answer as a fraction in simplest form.

Answers

Answer:-150

Step-by-step explanation:

Step 1: Solve all the integers.

−115-35

Step 2: Add the numbers and keep the negative sign.

-150

Hope this helps!!

P.S: It as a fraction is the same thing as it being in decimal from lol.

I need help with the delta math order signed number (level 2) Drag the numbers below to put them in order from least to greatest

Answers

The numbers ordered from least to greatest are- 2.14, 2.2, 2.221, 2.276, 2.26, 2.291.

Here, we are given 6 numbers-

2.2, 2.276, 2.291, 2.14, 2.26, 2.221

Now, we can add as many zeroes as we want after the decimal, it does not change the value of the number.

Thus, let us make all the numbers 3 digit decimal numbers

2.200,  2.276,  2.291,  2.140,  2.260,  2.221

Here, all the numbers have 2 in the units place, so we just need to compare the decimals

The first digit after decimal is 2 in all the numbers except 2.140, thus it is the smallest.

Then, the second digit after decimal is 0 in 2.200, thus it is the next smallest number.

By similar logic, looking at the second digit after the decimal only we can arrange the remaining numbers as 2.221, 2.276, 2.260, 2.291.

Thus, the numbers ordered from least to greatest are- 2.14, 2.2, 2.221, 2.276, 2.26, 2.291.

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Your question was incomplete. Please check for full content below-

Drag the numbers below to put them in order from least to greatest

2.2, 2.276, 2.291, 2.14, 2.26, 2.221

Find the coordinate of the midpoint of the segment with the given endpoints.
-6 and -4

Answers

The coordinate of the midpoint of the segment with the given endpoints is (-1, 0)

Midpoint of a line

The midpoint of a line is the point that divides the line into two equal parts.

The formula for calculating the midpoint is expressed as;

M(x, y) = (x₁+x₂/2, y₁+y₂/2)

Using the coordinate points (-6, 0) and (-4, 0)

M(x, y) = -6+(-4)/2

M(x, y) = -2/2

M(x, y) =-1

Hence the coordinate of the midpoint of the segment with the given endpoints is (-1, 0)

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For a given recipe, 8 cups of flour are mixed with 12 cups of sugar. How many cups of flour should be used if 27 cups of sugar are used? Assuming a constant ratio, fill out the table of equivalent ratios until you have found the value of x.

Answers

Answer:

x=18

Step-by-step explanation:

it is a proportion

8:12=x:27

you have to multiply the know external terms(8 and 27) and divide them by the 12

A square technology chip has an area of 81 centimeters. How long is each side of the​ chip?

The length of each side of the chip is ]]]blank]]]

enter your response here cm.
​(Simplify your​ answer.)

Answers

The length of each side of the chip is 9 centimeters.

What is the length of each side of the chip?

A square is an object that has four sides and four equal sides. All the four sides of a square are of equal length. A square has two diagonal that bisect each other at 90°.

The area of a square = length²

Given the area of a square, the length can be determined by calculating the square root of the area of the square. The square root of a number divides a number into two equal halves.

Length = √area

√81 = 9cm

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ILL GIVE BRAINLY TO THE BEST ANSWER

the 1560 members of the temecula community church have a method of quickly notifying members. the pastor and his secretary each call 3 members each of whom then call 3 other members, each of whom then calls 3 more members, and so on. how many rounds of calls are needed before all 1560 members are called

Answers

Answer:

here's the answer

Step-by-step explanation:

the total calls are 39 call

the remaining calls are 1530

the remaining rounds are 481

481+39=520

520x3= 1560

Please help urgent!
Ex 3: Quadrilateral ABCD is a parallelogram.
a) m/BAC = 54°,
find m/DCA =
D
D
A
c) m/DCB = 142° & m/DCA =
37⁰,
find m/BAC=
D
A
E
A
E
7
C
e) AE = 14 cm & DE = 18 cm,
find EB =
E
B
?
C
B
B
find m/DAB =
D
D
d) m/ABC = 73° &
m/DBA = 31°,
find m/DBC =
b) m≤ADC = 78°,
D
A
A
A
E
O
E
f) EC = 10 cm & EB = 15 cm,
find AC =
E
C
B
OB
C
B

Answers

Answer:

36 = 69

Step-by-step explanation:

45

The lengths of the three sides of a triangle (in centimeters) are consecutive odd
integers. If the perimeter is 45 centimeters, find the value of the shortest of the three
side lengths.

Answers

Answer:

13, 15,17

Step-by-step explanation:

Let x = the first number

Let x + 2 = the second number

Let x + 4 = the third number

Consecutive means in order like 1,2,3 or 20,21,22. Consecutive odd means that you want three numbers in order that are odd.  Each number would be 2 more than the number before.  For example 5 + 2 = 7.  We would have to add 4 to 5 to find the next consecutive odd number.

x + (x + 2) + (x +4)  = 45  I put the numbers in parentheses so you could see the first number plus the second number plus the third number equals 45

x + x+ 2 + x+ 4 = 45  Combine like terms

3x + 6 = 45  Subtract 6 from both sides of the equation.

3x = 39  Divide both sides by 3

x = 13

Add 2 to that to get the next odd number.

Add 4 to 13 to get the third odd number.

Answer: 13 cm

Step-by-step explanation:

Let the value of the shortest of the three side lengths is x.

Since the three sides of a triangle are consecutive odd

integers, hence: x, x+2, x+4.

Thus,

[tex]P=x+(x+2)+(x+4)\\45=x+x+2+x+4\\45=3x+6\\45-6=3x+6-6\\39=3x\\[/tex]

Divide both parts of the equation by 3:

[tex]13\ cm=x[/tex]

Kiara has $250 in her bank account. Each week she deposits $80 and withdraws $35. Gael has $310 in his account. Each week he deposits $95 and withdraws
$20. Write and solve an equation to determine the week w when Gael and Kiara have the same amounts of money in their account

Answers

The equation to determine the week w when Gael and Kiara have the same amounts of money in their account is 45w + 250 = 75w + 310

What is an equation?

An equation is used to show the relationship between numbers and variables. An equation can be linear, quadratic depending on the degree.

Let w represent the number of weeks.

For Kiara:

Money in account = (80 - 35)w + 250 = 45w + 250

For Gael:

Money in account = (95 - 20)w + 310 = 75w + 310

For both to have same amount of money:

45w + 250 = 75w + 310

The equation to determine the week w when Gael and Kiara have the same amounts of money in their account is 45w + 250 = 75w + 310

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Alexander said: "All primes are odd,
except the number 2. Therefore, all odd numbers are prime numbers.
prime." Do you agree with Alexander? Explain your answer.

Answers

No

Step-by-step explanation:

All numbers that are prime are odd and If the number is divisible by 2 it would be a composite number

Evaluate if A = 2, B = 7, and C = 6. 7a + b over C (over means a fraction line, imagine 7a + b over C as a fraction)​

Answers

Answer: 3.5

Step-by-step explanation:

A = 2, B = 7, C = 6

(7a + b)/c

=(7(2)+7)/(6)

=(14+7)/6

=21/6

=3.5

Part A: Rhett made $250 washing cars with his mobile car wash company. He charges $70 per car and earned $50 in tips. Write an equation to represent this situation. (4 points)



Part B: Scarlett made a profit of $250. 00 with her mobile car wash company. She charged $75. 00 per car wash and received $35. 00 in tips, but also had to pay $5. 00 in cleaning supplies per car wash. Write an equation to represent this situation. (4 points)



Part C: Explain how the equations from Part A and Part B differ. (2 points)

Answers

The equation for Rhett's Situation is 70x + 50 = 250 and the equation for Scarlett's Situation is 70x + 35 = 250. In Rhett's case equation their is no expense per car wash but in case of Scarlett' equation their is expense of $5 per car wash.

Total amount earned by Rhett = $250  

Let the number of cars Rhett washed = x

Rhett charges $70 per car and earned $50 in tips. So, we can write

Total amount earned by Rhett = 70x + 50

On comparing total amount earned by Rhett, we get

70x + 50 = 250

The equation for Rhett's Situation is 70x + 50 = 250.

Total amount earned by Scarlett = $250  

Let the number of cars  Scarlett washed = x

Scarlett charges $75 per car wash and earned $35 in tips but also had to pay $5. 00 in cleaning supplies per car wash.. So, we can write

Total amount earned by Scarlett = 75x + 35 - 5x = 70x +35

On comparing total amount earned by Scarlett, we get

70x + 35 = 250

The equation for Scarlett's Situation is 70x + 35 = 250.

In Rhett's case equation their is no expense per car wash but in case of Scarlett' equation their is expense of $5 per car wash.

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John and Joan shared an amount of money in a ratio 5:7. Joan had $45 more than John - find the amount each received​

Answers

John received $112.5 and Joan received $157.5 respectively as per the given ratio.

John and Joan share the amount in the ratio: 5:7

it is given that Joan had $45 more amount than John, therefore

Let the amount with John be x, so the amount with Joan will be x + 45

Formulating the equation we get:

Amount with John/Amount with Joan = Ratio of money with John/Ratio of money with Joan

x/(x + 45) = 5/7

7x = 5x + 225

2x = 225

x = 112.5

Amount with John  = 112.5

Amount with Joan = 157.5

So, amount John received $112.5 and Joan received $157.5 respectively.

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D(-4,1),A(-2,5,s(-1,4)N(-1,2

Answers

All of the coordinates in the attached screenshot are in the second quadrant.

What scale factor would you use to create the copy on the right?

Answers

3

- - - - - - - - - - - - - - - - - - - - - - - -

Work below. Enjoy!

- - - - - - - - - - - - - - - - - - - - - - - -

A simple way to determine the scale factor is to measure a segment's size in units and compare it to the original.

Segment XW = 6 units

Segment EF = 2 units

Now, simply divide the larger (6) by the smaller (2) and you get your answer (3).

- - - - - - - - - - - - - - - - - - - - - - - -

Good luck! :)

(Consider leaving a Brainliest if this helped!)
~pinetreee


Find the distance between the following pair of points.

A(-3,1), B(7,13)

Answers

Answer:

15.6 units (3 s.f.)

Step-by-step explanation:

The distance between 2 points is given by the formula below, where [tex](x_1, y_1)[/tex] is the first coordinate and [tex](x_2, y_2)[/tex] is the second coordinate.

[tex]\boxed{{\text{Distance between 2 points}= \sqrt{(y_1 - y_2)^{2} + (x_1 - x_2)^{2} } }}[/tex]

Using the distance formula above,

distance between A(-3, 1) and B(7, 13)

= [tex]\sqrt{(13-1)^{2} + [7-(-3)]^{2} } }}[/tex]

= [tex]\sqrt{12^2+(7+3)^2}[/tex]

= [tex]\sqrt{244}[/tex]

= 15.6 units (3 s.f.)

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keiko's coffee shop makes a blend that is a mixture of two types of coffee. type a coffee costs keiko $5.35 per pound, and type b coffee costs $4.05 per pound. this month, keiko made 166 pounds of the blend, for a total cost of . how many pounds of type b coffee did she use?

Answers

Keiko used 83.5 pounds of type A coffee and 82.5 pounds of type B coffee in the blend.

What exactly are algebraic expressions?

An expression constructed using integer constants, variables, and algebraic operations is known as an algebraic expression

Given:

Type A coffee cost $5.35 per pound

Type B Coffee cost $4.05 per pound

Keiko made total 166 pound of the blend of $780.85

Therefore,

[tex]5.35x + 4.05y = 780.85 \;\;\;\;\; -------equation (1)[/tex]

[tex]x + y = 166 \;\;\;\; ---------equation (2)[/tex]

simplify the equation (2),

[tex]y = 166-x[/tex]

Substitute the value of y in equation (1),

[tex]5.35x + 4.05 (166-x) = 780.85[/tex]

[tex]5.35x + 672.3 - 4.05x = 780.85[/tex]

[tex]5.35x-4.05x=780.85-672.3[/tex]

[tex]1.3x=108.55[/tex]

Therefore,

[tex]Total\;pound\;of\;type\;A\;coffee\;is,\;x=83.5\;pounds[/tex]

Substitute the value of x in equation (2),

[tex]y=166-83.5[/tex]

Therefore,

[tex]Total\;pound\;of\;type\;B\;coffee\;is,\;y=82.5\;pounds[/tex]

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30 points
how do i solve 4x -1

Answers

Answer: QV=31 units ==> 3rd option

Step-by-step explanation:

SV=QV   ==> Congruent segments are equal

4x-1=QV

TQ=TS   ==> Congruent segments are equal

26=3x+2

26-2=3x+2-2

3x=24

x=8

4x-1=QV

4(8)-1=QV

32-1=QV

QV=31 units ==> 3rd option

The answer to Gprahing systems of equations

Answers

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

Assume that​ Tom's Tree and Landscape Service charges ​$ 175 for a consultation fee plus ​$55 per hour for labor and that Lawn Perfect Landscape Service charges ​$325 for a consultation fee plus ​$25 per hour for labor.
​a) Write a system of equations to represent the cost of the two landscaping services.
​b) Graph both equations for 0 to 10 hours on the same axes.
​c) Use the graph to estimate the number of hours of landscaping that must be used for both services to have the same cost.

Answers

Using linear functions, we have that:

a) The system is composed by these following equations: 175 + 55x, 325 + 25x.

b) The graph is given at the end of the answer.

c) From the point of intersection on the graph, both services will have the same cost of $450 for 5 hours of work.

What is a linear function?

A linear function is modeled by:

y = mx + b

In which:

m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

For each function, we have that:

The consultation fee is the intercept.The hourly fee is the slope.

Hence the linear equations that compose the system are given by:

175 + 55x, 325 + 25x.

The graph is given at the end of the answer, and from it, the intersection point is at (5,450), meaning that both services will have the same cost of $450 for 5 hours of work.

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