Mathematics Middle School

The sum of Bernice’s age and her
mother’s age is 63. Bernice is 21. What is her mother’s age?

Answers

Answer 1

Answer:

her age would be 42

Step-by-step explanation:

63-42=21

Answer 2
42 this is because 63-21=42

Related Questions

An equation is shown. What is the value of 12x that makes the equation true?


12x + 4x = 15/2 + 4x

pls halp

Answers

Answer:

x = 5/8

Step-by-step explanation:

PLEASE HELP!! I'LL GIVE BRAINLEST!!

Use the formula P = 2l + 2w. Find the perimeter of a rectangle with a length of 12.9 ft and a width of 19.3 ft. Show all of your work.

Answers

p = 2(12.9) + 2(19.3)
P = 25.8 + 38.6
P = 64.4

Question Help;

Sheldon can read 8 pages in 15 minutes. Amy can read 16 pages in 1 hour. Explain how you could use a table or graph to find how much longer it would take Amy to read a 320​-page book than Sheldon.

Answers

Answer:

First you must convert time to the same units.

8pages/15min= 32pages/1 hr

now you can clearly see the ratio

Amy: 16/hr

Sheldon: 32/hr

We can see that Sheldon reads twice as fast as Amy.

This should be a good starting point, sorry I don't have much time to finish this question. Hope this helps good luck!

Amy 16hr Sheldon 8hrs

Find the amount of sales tax if the sales tax rate is 5% and the cost of the winter coat is $40. Hint: this question is only asking for the sales tax.

Answers

Answer:

40/100*105 = 42

42 - 40 = 2

$2 sales tax

what is 3(x + 3) equal to

Answers

3x + 9 if you don’t know what x equals.

Answer:

3x+9

Step-by-step explanation:

I NEED biggggggg brain helpers XD

Answers

Answer:-18x^5y^{6z+2}

Step-by-step explanation:

dont feel like explaining

What is the area of `∆STR`?

A.
30 square feet
B.
34.5 square feet
C.
57.5 square feet
D.
60 square feet



Here another one T^T

Answers

i believe the answer is A i
It’s A I took the test

Which expression is equivalent to 4s + 3 - 3 - s

A. 3s + 6
B. 4s + 0
C. 3s
D. 3s + 1​

Answers

Answer:

C. 3s

Step-by-step explanation:

(repost) Help Please!! I will give Brainliest!!

Answers

3x10^10 cubic feet if you need the work let me know
3x10^10 is the correct answer

Can you hep me with this question...

Answers

Answer:

so like I just looked it up so try

-4

----

-4

Answer:

10/27

Step-by-step explanation:

To figure this out, first subtract 8/15 from 6/5.

Before we can do that though, we need a common denominator. The LCM of 5 and 15 is 15. (5 * 3 = 15; 15 * 1 = 15) 8/15 already has 15 has a denominator, so that doesn't need to be modified. 6/5 becomes 18/15 (6 * 3 = 18).

Subtract 8/15 from 18/15 to get 10/15. This simplifies to 2/3.

Now, multiply 2/3 by 5/9 (reciprocal of 9/5). That equals 10/27. There is no need to reduce, as it is already simplified.

The spinner is spun 48 times. What is a reasonable prediction of landing on the letter E?

Answers

Answer:

because that is the right amount of times you spun it

Step-by-step explanation:

After a power failure, the temperature in a freezer Increased at an average rate of 3.5 °F per hour. The total Increase was 24.5 °F. Enter and solve an equation to find the number of hours until the power was restored. Let x represent the number of hours it takes for the temperature to increase to 24.5 °F.


The equation to find the number of hours until the power was restored is ____x = _____


The number of hours until the power was restored is ______ hours.

<Please fill in the blanks I will give you brainliest if you answer correctly>​

Answers

Answer:

3.5x=24.5

3.5x7=24.5

X=7

Step-by-step explanation:

3.5 times what equals 24.5

3.5x1=3.5

3.5x2=7

3.5x3=10.5

Keep doing this and increase the number you are multiplying 3.5 by until your answer is 24.5.

pls someone plsss help meeeee

Answers

Answer:

student a answered correctly

Step-by-step explanation:

student b didn't multiply the crossproducts

Answer:

Student B has the correct answer

Between the two proportions you are looking for number which are related in the same way.

When dividing 45 by 15 you get 3, you should also get 3 when dividing the proportion next to it.

To Solve-

Cross multiply 6 x 15 =90

Then divide by 45

The correct answer is 2

Hello, I would really like some help on this!! Please leave an explanation of how you got your answer! Thank You!

Answers

1a) To find the total area, you must find the area of the triangular part that is missing, then subtract this from the area of the rectangle. For the triangle’s area, you need to know the width (2m) and length (2m). For the rectangle’s area you need to know the width (3m) and length (4m).
1b) the total area is 10m^2 (10 meters squared). This is found by subtracting the triangle (.5x2x2=2) from the rectangle (3x4=12).
I don’t know how to answer this question sorry. I’m just answering so the other person can get brainliest.

READ THE THING UwU uhm yeah thats all

Answers

Answer:

do u want me to solve it??

Step-by-step explanation:

She didn’t align the decimals correctly when she subtracted. The correct answer is 15.457 .

on the left side of the triangle, it says 10 cm, on the right side of the triangle, it says 18 cm, below the triangle, it says 15 cm. find the area of the triangle and answer this question is square cm.

Answers

Area formula for a triangle is 1/2BxH

B=15
H=10

1/2(15)= 7.5

7.5 x 10= 75

So the area is 75 square cm :)

i+5 < 3u+5
subtract 5 from each side
what do we have left

Answers

Answer:

i+2<3u+2 is the answer for your question.

Use substitution to find the ordered pair of the following system of equations:

y=6x
y=5x+7
(_,_)

Answers

Answer:

first substitute 'y' in 2nd equation by right side of 1st one and you get:

now substract 5x from both sides of 2nd equal and you get:

as a result of the equal above you get:

now substitute x in very first equation by the result from above (x=7):

Step-by-step explanation:

sorry if its wrong

6x = 5x + 7
-5x -5x
——————
x = 7
y = 6x
y = 6(7) = 42

Your answer: (7, 42)

Jada's brother drives 18 miles to work and then a quarter of that distance again. How far does Jada's brother drive?

Answers

18+4.5

A quarter of eighteen is 4.5

pls help me with thissssss

Answers

divide the two numerators and get 3.25 multiply 13 hours by that and the answer to the first part is 42.25
yes that’s very true

Find the sales tax....

Answers

Answer:8.75

Step-by-step explanation:

look at the diagram and answer the question. i’ll give brainliest.

Answers

Whoever worded question made tha shi so confusing

Answer:

Yes

Step-by-step explanation:

With each hour you rent the paddleboard the price goes up.

Time= independent variable

Cost= Dependent variable

HELP PLZ I WILL GIVE BRAINLIEST!! Write the prime factorization of 280 using exponents.

Answers

the answer is 2(3) x 5(1) x 7(1)

Answer: 16? Don't trust me.

Step-by-step explanation:

(3 + 1)(1 + 1)(1 + 1) = 4 x 2 x 2 = 16

2 2/5 multiplied by 2 multiplied by 3 1/5

Answers

Answer:

15 9/25

Step-by-step explanation:

1 Convert 2\frac{2}{5}2

5

2

​

 to improper fraction. Use this rule: a \frac{b}{c}=\frac{ac+b}{c}a

c

b

​

=

c

ac+b

​

.

\frac{2\times 5+2}{5}\times 2\times 3\frac{1}{5}

5

2×5+2

​

×2×3

5

1

​

2 Simplify  2\times 52×5  to  1010.

\frac{10+2}{5}\times 2\times 3\frac{1}{5}

5

10+2

​

×2×3

5

1

​

3 Simplify  10+210+2  to  1212.

\frac{12}{5}\times 2\times 3\frac{1}{5}

5

12

​

×2×3

5

1

​

4 Convert 3\frac{1}{5}3

5

1

​

 to improper fraction. Use this rule: a \frac{b}{c}=\frac{ac+b}{c}a

c

b

​

=

c

ac+b

​

.

\frac{12}{5}\times 2\times \frac{3\times 5+1}{5}

5

12

​

×2×

5

3×5+1

​

5 Simplify  3\times 53×5  to  1515.

\frac{12}{5}\times 2\times \frac{15+1}{5}

5

12

​

×2×

5

15+1

​

6 Simplify  15+115+1  to  1616.

\frac{12}{5}\times 2\times \frac{16}{5}

5

12

​

×2×

5

16

​

7 Use this rule: \frac{a}{b} \times \frac{c}{d}=\frac{ac}{bd}

b

a

​

×

d

c

​

=

bd

ac

​

.

\frac{12\times 2\times 16}{5\times 5}

5×5

12×2×16

​

8 Simplify  12\times 212×2  to  2424.

\frac{24\times 16}{5\times 5}

5×5

24×16

​

9 Simplify  24\times 1624×16  to  384384.

\frac{384}{5\times 5}

5×5

384

​

10 Simplify  5\times 55×5  to  2525.

\frac{384}{25}

25

384

​

11 Convert to mixed fraction.

15\frac{9}{25}

15 9/25

​

2 2/5 times 2 times 3 1/5= 24/25

I dont get- this thing .-.

Answers

Answer:

It would be #2

Step-by-step explanation

It’s number two babes

I will mark the best answer

Answers

Answer: N = 10

Step-by-step explanation:

-(n - 8) = -2

Distrubute

-n + 8 = -2

Minus 8 from both side

-n = -10

Divide both side by -1 to make it positive

N = 10

I love dogsssssss and if you think cats are better then don’t talk to me <3 jk I like cats too

I need to find the area, what is it?

Answers

1.5 inches

The formula is (base x hight) divided by 2

if giselle had five books sets and gave 9 books away and has 26 left how many were in the bookset

Answers

Answer:

7 in each book set

Step-by-step explanation:

26+9= 35 (total # of books)

35/5= 7 ( # of books in a book set)

26 + 9 = 35
35 / 5 = 7
So the answer is 7 books per book set!
Hope it helps

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family? (This is actually math)

Answers

Answer:

their are 4 sisters and 3 bothers

The spinner is spun 240 times. What is a reasonable prediction
of it landing on a number less than 3?

Answers

Answer:

60 times

Step-by-step explanation:

2/8 pieces of the circle are less than three

2/8 = 25% chance of landing less than 3

240 * 25% = 60

Other Questions
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