Answer:
400k four hundred thousand centimeters is 4 kilometers
Stu hiked a trail at an average rate of 3 miles per hour. He ran back on the same trail at an average rate of 5 miles per hour. He traveled for a total of 3 hours. The equation 3t = 5(3 – t) can be used to find the time it took Stu to hike one way. How long did it take Stu to hike the trail one way? hours How long is the trail? miles What is the total distance Stu travelled? miles
Answer:
Time taken to travel at 3 miles = 1.875
Time taken to travel at 5miles = 1.125
Total distance = 11.25
Step-by-step explanation:
D = speed x time
Time = distance/speed
Time at 3 miles per hour and 5 miles per hour
T1 = d/3
T2 = d/5
Total time = 3 hours
T1+t2 = 3 hours
d/3 + d/5 = 3
= d(1/2+1/5) = 3
d(5+3/15) = 3
d(8/15) = 3
We cross multiply
8d = 45
d = 45/8
= 5.625 miles
Total distance = 2d
2x5.625 = 11.25 miles
Since d is now known
T1 = 5.625/3 = 1.875 hours also 1 hour 52.5 minutes
T2 = 5.625/5 = 1.125 hours = 1 hour 7.5 minutes
Total distance 2xd = 11.25
Answer:
the answer is
A. 1.875 hours
C. 5.625 miles
D. 11.25 miles
Step-by-step explanation:
magic
Please help me!! Thanks!!!
Answer:
yessirrr
Step-by-step explanation:
1. They are all 100 degrees
2. They are once again all 150 degrees
549 divided by 61. Dont round the answer
Answer:
9
Step-by-step explanation:
Answer: The Answer is 9 i'm really sure this is the answer
Factor completely x2 − 7x + 18. (1 point)
Prime
(x − 9)(x − 2)
(x − 9)(x + 2)
(x + 9)(x + 2)
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[tex] {x}^{2} - 7x + 18 = (x - 9)(x + 2) \\ [/tex]
Thus the correct answer is the second one.
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Which of the following equations represents a function (15 points)
solve for x
3(x-2)-2x+3=-12
help plz
Answer:
x = -9
Step-by-step explanation:
First, subtract 3 from both sides of the equation and distribute the 3 to the x and -2.
3x - 6 - 2x = -15
Now, add the 6 to both sides of the equation and combine 3x and -2x.
x = -9
The value of x is -9.
Leo works at McDonalds, and gets paid $8.50 hr. He passed his store’s inspection and received a $100 bonus.
Write an equation that represents the given relationship.
Answer:
$8.50hr+ $100=x
Step-by-step explanation:
His $8.50 per hour is given to him plus $100 bonus.
Perimeter is a measure of the distance around a figure. If each side of a triangle measures 0.75 inches, what is the perimeter of the triangle?
Answer:
The perimeter of a triangle is the sum of all its three sides.
So,
0.75+0.75+0.75 = 2.25inches
Simplify the expression:
(5+2)(5)
Answer:
D 25t+10
Step-by-step explanation:
Distribute the 5 by multiplying it with 5t and then multiplying it with 2.
(5 * 5t) + (5 * 2)
25t + 10
Answer: the answer is D 25t + 10 hope this helps you
Step-by-step explanation:
Solve the equation x32 +10 =118
Answer:
x=1.157563
Step-by-step explanation:
Answer:
x = 3.375 :)
Step-by-step explanation:
32x+10=118
32x=108
108/32= 3.375
Round the number to the place of the underlined digit. The underlined digit is supposed to be the 7.
42.76
Answer:
42.80
Step-by-step explanation:
5 or up you round up. 4 or down, you round down. So since 6 is bigger than 5, you round up.
if KM = 32 units, KL = 3x+6 and LM= 11 units, what is the value of x?
Answer:
x = 5Step-by-step explanation:
|<------------------- 32 units ---------------->|
K-----------------------L-------------------------M
3x + 6 11
KL + LM = KM
3x + 6 + 11 = 32
3x = 32 - 11 - 6
x = 15 / 3
x = 5 units
Harold worked 40 hours between Monday and Friday and then more hours during the weekend. Over the whole week, he worked over 52 hours. (Use h as a variable.)
Answer:
h=12
Step-by-step explanation:
I think the question is asking how long he worked over the weekend.(sorry if that's not what they were asking)
More specifically: h is greater than or equal to 12
Julla typed 374 words in five minutes in her keyboarding class. At this rate, how many words could she type in 11 minutes?
Answer:
822.8 Words.
Step-by-step explanation:
First, divide 374 by 5 to find the amount of words "Julla" can type in 1 minute. This should give you 74.8 words. Then multiply this by 11 to find the amount of words "Julla" can type in 11 minutes. By doing this, we can get 822.8 words. You may want to round this up to 823 words.
Hope this helps! Let me know.
Which table represents a proportional relationship that has a constant of proportionality equal to 0.8?
Answer:
correct answer is B
Step-by-step explanation:
hi
Simplify . Explain your steps.
answer:
x^7 over x^4
step-by-step explanation:
hope this helps <3
Answer:
x^7 over x^4
Step-by-step explanation:
Happy to help
Ink cartridges are heavy 1/4 pound. The total weight of the cartridges in a box is 2 1/2 pounds. How many cartridges does the box contain?
Answer:
10 cartridges
Step-by-step explanation:
2x4+2=10
hope this helps
what would be in the 100th number 3,5,7,9,11
A ratio table is PROPORTIONAL when SOME columns reduce to the same fraction
true or false pls asap
Answer: true
Step-by-step explanation:
can u help me with this page?
1)
[tex]f(x) = 2x - 5\\f(4) = 2(4) - 5 = 8 - 5 = 3[/tex]
2)
[tex]f(x) = 2x - 5\\f(-6) = 2(-6) - 5 = -12 - 5 = -17[/tex]
3)
[tex]g(x) = x + 3\\g(8) = 8 + 3 = 11[/tex]
4)
[tex]h(x) = 4x\\h(5) = 4 \cdot 5 = 20[/tex]
5)
[tex]k(x) = x^2 + 2x - 5\\k(6) = 6^2 + 2 \cdot 6 - 5 = 36 + 12 - 5 = 43[/tex]
6)
[tex]k(x) = x^2 + 2x - 5\\k(-3) = (-3)^2 + 2(-3) - 5 = 9 - 6 - 5 = -2[/tex]
7)
[tex]g(x) = x + 3\\g(3x) = 3x + 3 = 3(x + 1)[/tex]
8)
[tex]f(x) = 2x - 5\\f(4x) = 2(4x) - 5 = 8x - 5[/tex]
9)
[tex]h(x) = 4x\\h(5t) = 4(5t) = 20t[/tex]
10)
[tex]k(x) = x^2 + 2x - 5\\k(4t) = (4t)^2 + 2(4t) - 5 = 16t^2 + 8t - 5[/tex]
11)
[tex]f(x) = 2x - 5\\f(x + 3) = 2(x + 3) - 5 = 2x + 6 - 5 = 2x + 1[/tex]
12)
[tex]f(x) = 2x - 5\\g(x) = x + 3\\f(g(x)) = 2(x + 3) - 5 = 2x + 6 - 5 = 2x + 1[/tex]
Find the fifth term in the sequence: 9, 13, 17,...
3^3 / 3^-4 = ?
Will mark brainliest plz hurry
Answer:
[tex]2187[/tex]
Step-by-step explanation:
[tex]\frac{3^3}{3^-^4}[/tex]
When attempting to solve this, we have to consider the exponent rule of fractional exponents:
[tex]\frac{x^a}{x^b} =x^a^-^b[/tex]
Therefore, our initial problem would become:
[tex]3^3^-^(^-^4^)\\[/tex]
Two negatives become positive:
[tex]3^3^+^4[/tex]
Add:
[tex]3^7[/tex]
[tex]3[/tex] × [tex]3[/tex] × [tex]3[/tex] × [tex]3[/tex] × [tex]3[/tex] × [tex]3[/tex] × [tex]3[/tex]
[tex]= 2187[/tex]
WILL MARK BRAINLIEST. Can someone help me wit des 2 questions?
Error Analysis: Isabel says that the equation x-2=-(x-2) has no solution because a number can never be equal to its opposite. Explain the error Isabel made. "MP.3"
Look for Relationship: You are solving an equation with a variable on each side. Does the side on which you choose to isolate the variable affect the solution? Why might you choose one side over the other? "MP.7"
Answer:
Zero is a number that can be equal to its opposite.
So, the given equation has solution for which LHS=RHS=0.
Step-by-step explanation:
The answer to the equation is 2
WHAT IS 9+10 I NEED HELP NOW!!!!!!!
Answer:
21
Step-by-step explanation:
bc yes
Answer: 19
Step-by-step explanation:
If 10 plus 10 is 20, 10 plus 9 is 19
simplify: 3a-4b+5a+10b
Answer:
Step-by-step explanation:
8a+6b
Answer:
8a+6b
Good Luck!!!
During a 60-minute period, a traffic engineer counted 54 trucks and cars that crossed a bridge. The ratio of trucks to cars that travel across the bridge is usually 2:7. The equation LaTeX: \frac{2}{7}=\frac{t}{54-t}2 7 = t 54 − t can be used to predict the number of trucks, t, the engineer should have counted. How many trucks should the engineer have counted?
Answer:
Step-by-step explanation:
Given the expression for the equation representing the prediction of number of trucks as;
2/7 = t/54-t where t is the number of trucks
To get the number of trucks t, we will have to evaluate the expression and solve for t as shown;
Given 2/7 = t/54-t
Cross multiply
2(54-t) = 7t
Open the parenthesis
2(54)-2t = 7t
108-2t = 7t
7t+2t = 108
9t = 108
Divide both sides by 9
9t/9 = 108/9
t = 21
Hence the engineers should have counted 21trucks
Is √38 rational or irrational
Answer:
Rational
Step-by-step explanation:
Answer:
irrational
Step-by-step explanation:
because it does not simplify into a whole number
Find the solution when x=2 and y=6
x(7+ y) - 5
Answer:
21
Step-by-step explanation:
2(7+6)-5
2(13)-5
26-5
21
What’s the answer? -17 - 13.9
Answer:
-4.1
Step-by-step explanation:
Answer:
-17 - 13.9 = -30.9
Step-by-step explanation:
when subtracting negative and positive numbers you get a negative:
- - + = -
If a = -7 and b = -16, what is the value of - a - b?
is it
-23
-9
23
9