Mathematics Middle School

The sum of two numbers is 45. The difference of the 2 numbers is 3. What is the product?

A:135
B:480
C:504
D:2,160

Answers

Answer 1

Answer:

x = 24, y = 21

Step-by-step explanation:

x + y = 45

x - y = 3

Add them together

2x = 48

x = 24

24 + y = 45

y = 21

Related Questions

Which calculation and answer show how to convert 3/12 to a decimal?

Answers

Answer:

c

Step-by-step explanation:

3/12= 1/4=0.25

Answer:

C

Step-by-step explanation:

step 1

Address input values.

Input values:

The fraction number = 3/12

step 2

Write it as a decimal

3/12 = 0.25

0.25 is the decimal representation for 3/12

For Percentage Conversion :

step 1

To represent 0.25 in percentage, write 0.25 as a fraction

Fraction = 0.25/1

step 2

multiply 100 to both numerator and denominator

(0.25 x 100)/(1 x 100) = 25/100

25% is the percentage representation for 3/12

Elena is buying cups and plates for her party. Cups are sold in packs of 8 and plates are sold in packs of 6. She wants to have the same number of plates and cups.
Find a number of plates and cups that meet her requirement.

Answers

Answer:

24 of each; 3 packs of cups and 4 packs of plates

Step-by-step explanation:

If you want to know the minimum amount of plates and cups she can get, it would be 24.

The factors of 8 are:

8, 16, 24, 32, 40, 48, 56, 64, 72, 80

The factors of 6 are:

6, 12, 18, 24, 30, 36, 42, 48, 54, 60

The least common factor they share is 24.

She can buy 3 packs of cups and 4 packs of plates.

Elena should buy 20 pack of plates

Douglas went to Charlies General Store to get gas. He paid $52.20 for 20 gallons of gas. How much would he have paid if he got 25 gallons instead

Answers

$52.20/20= $2.61 , which equals how much he paid per gallon.

$2.61x25= $65.25 for 25 gallons of gas

Answer: $65.25
52.20 divided by 20 is 2.61. 25 multiplied by 2.61 is 65.25

The density of a substance is the mass of the substance per unit of volume. The density of the element Americium is inversely proportional to its volume. The graph shows the relationship between the density of Americium, p grams per cubic centimeters, and its volume, v cubic centimeters.

Answers

Answer:

The density of a substance is the mass of the substance per unit of volume. 

Step-by-step explanation:

Choose the mixed number that is equivalent to this decimal.
3.242424…
A)3 8/33
B)3 12/25
C)3 1/4
D)3 1/5

Answers

Answer:

B

Step-by-step explanation:

I think this is the answer

The answer is A

if you put all of these in a calculator 3 8/33 is the only one that gets 3.242424242

15x = 6x - 90
i keep getting two

Answers

Answer: If you are trying to solve for x then I keep getting -10 but I'm gonna try again.

Answer:

Its answer is - 10

I think you did it another way. There is the process

Step-by-step explanation:

15x = 6x - 90

or, 15x - 6x = - 90

or, 9x = - 90

or, x = - 90 / 9

or, x = - 10

Fill in the blanks to complete the sentences about zero pairs.

Answers

Zero pairs are generated by combining the EQUAL number of positive and negative numbers .

A zero pair could be -11 + 11

Solve for h.

h - 45 = -35
A. h = -10
B. h = 10
C. h = -80
D. h = 80

Answers

B. h = 10

Explanation:
h - 45 = -35
+45 +45
h = 10

Is using the associative property of addition a good strategy for simplifying (4/3 + 2/3) + 2? Why or why not?

Answers

Answer:

Easy way

Step-by-step explanation:

(4/3 + 2/3) + 2

= 2 + 2

=4

Oviously (4/3 + 2/3) is directly 2.

HELP PLS IT DIFFICULT ND THX U.

Answers

Answer:

Circumference 1: 5

Circumference 2: 3.5

Circumference 3: 3

Step-by-step explanation:

hope this helped

Answer:

Circumference 1: 5

Circumference 2: 3.5

Circumference 3: 3

Step-by-step explanation:

Select the expressions that are equivalent to 5(6a).

Answers

Answer:

A

Not B

Not C

Not D

Step-by-step explanation:

Answer:first one

Step-by-step explanation:

Ravi made $306 for 18 hours of work. At the same rate, how many hours would he have to work to make $221?

Answers

Answer:

hhhhhhhhhhhhhhhh

Step-by-step explanation:

YALL PLS HELP The temperature on Monday was –6°C in Romania. On Tuesday, the temperature was 3°
lower. What was the temperature on Tuesday?

i. –3°C / ii. –9°C / iii. 3°C / iv. 9°C

Answers

Answer:

ii. –9°C

Step-by-step explanation:

-6-3=-9

the answer is -9°C
-6-3=9

Which expression is equivalent to (x+3)+y

Answers

Answer:I hope my explanation helps

Step-by-step explanation:Those are the unknown variables so there would not be a way to solve the problem unless you had numbers you could cross multiply with then once you find out what those are figure out what y is and multiply (x+3)+y the numbers in the (.  ) by y then add them

The answer is remove the parentheses. X+3+y

Select the locations on the number line to plot the points −17/8 and 13/8.

Answers

Answer: With this information the answer would be GO down twice into the negatives and make you plot point, next go down eleven times and make your plot point, and last go down seventeen times and make your plot point.

Step-by-step explanation: What you have to do is make the number line with a zero at in the middle on the left of the zero you go down into the the negative numbers and on the right you go up into the positive numbers

Step-by-step explanation:

-17/8 < 13/8

♡Discussion:

≤ Means maximum≥ minimum > means greater than< means less

I need help I think the answer is G but I'm not to sure

Answers

Answer:

I

Step-by-step explanation:

-2x + y ≥ 4

-upwards slope, solid line

x + y < 2

-downwards slope, dotted line

It’s I got G because I can be a graph

when rounding to estimate this sum, what do you do first?
389+190=

A. Add the digits in the hundreds place
B. round the addition problems 400+200
C. round the addition problems 300+100

Answers

Answer:

B

Step-by-step explanation:

this is because it would be more accurate than a and b

a would end up as 400

b would end up as 600

c would end up as 400

the actual answer is 579

it is closest to B

Help i need this it’s due today

Answers

Answer:

A or C

Step-by-step explanation:

The constant of proportionality means that Gavin can have _________ flowers per _________.​

Answers

Answer:

The constant of proportionality means that Gavin can have _20_ flowers per _10 seeds_.​

Step-by-step explanation:

hope this helps!

n is m% of what number?

Answers

Answer:

  n  

m

100

Step-by-step explanation:

n/m/100

n is divided by m%

m%=m/100

m%=m/100 means to multiply. n=(m/100)•x

how many times can 7 go into 1000

Answers

Answer:

7 can go into 1000 142 6/7 times. This is a remainder equation, but that is how many times 7 can go into 1000.

Hope this helps!

Translate the word phrase into a math expression.

1 less than a number.


A. n + 1

B. n−1

C. 1−n

D. 15 ÷ n

Answers

B is the answer because we don’t know what it is so n less than 1

How to calculate distance between two points (-3,2) and (3,0).
And pls find the radical

Answers


√74
Explanation:
To calculate the distance use the
distance formula
d=√(x2−x1)^2+(y2−y1)^2

−−−2
where
(x1,y1)and (x2,y2)
are 2 coordinate points
The 2 points here are (-3 ,7) and (4 ,2)
let(x1,y1)=(−3,7) and (x2,y2)=
(4,2)⇒d=√(4−(−3))2+(2−7)2=√49+25=√74←in radical form
I think it’s y=3x-9?

-10+16 divided by (-2)+7

*Please show work!*

Answers

Here’s my work to your question!

Answer:

= 1 1/5

Step-by-step explanation:

= -10+16/(-2)+7

= 6/5

= 1 1/5

Someone help me with this please, I really need help, and it's due tmrw...PLEASE

Answers

Answer:

the last one

Step-by-step explanation:

3.5(w) 3.5 per week or 3.5 change per week

hope this was helpful

I think it is D. 3.5 is the amount it grows every week which is why it is multiplied by the number of weeks.

Sean's Cafe has regular coffee and decaffeinated coffee. This morning, the cafe served 18 coffees in all, 9 of which were regular. What percentage of the coffees were regular?

Answers

Answer:

50% of the regular coffee's were regular

50%
Explanation:
multiply 9 • 100
the divide 900 into 18
it should give you 50

por ejemplo 5/3 o algo si
si puedes y me ayudaria mucho es que si pueden darme la respuesta
pls tengo


no english just spanish and no files just help me

Answers

No entiendo con qué te ayudo?

Please help me find the answer to this question.

Answers

Answer:

6

Step-by-step explanation:

Step one: make 2 2/3 into an improper fraction

2 x 3 = 6

Add 6 to the numerator

gives you 8/3

Step two: divide

16=48/3

(48/3) / (8/3)

48 divided by 8 = 6

Answer:

6

Step-by-step explanation:

Turn 2 2/3 into an improper fraction  8/3

Turn 16 into a fraction  16/1

16/1 divided by 8/3 means flip the second fraction

16/1 * 3/8

Multiply and reduce

48/8 = 6

All of the following are equivalent to 2(2a + b) + 8, except _____.

4 a + 2 b + 8
2(2 a + b + 4)
4( a + b + 2)
4 a + 2( b + 4)

Answers

Answer:

The answer is : 4a + 2b + 8

Step-by-step explanation:

2x2a = 4a

2xb = 2b

+8

What is the length, in units, of the line segment with endpoints at (1, 4) and (3, 7)?

A. √137

B. √15

C. √5

D. √13

Answers

Answer:

√13

Step-by-step explanation:

Square root of 13 I hope this helps!
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