All categories

3 years ago

7/8 of a number is 63

Mathematics

1 answer:

ololo11 [35]3 years ago

6 0

$\frac{7}{8} \times x = 63 \: so \\ x = 63 \times \frac{8}{7} = 9 \times 8 = 72$

You might be interested in

Write a paragraph. How do you prepare fore a math test?

Alik [6]

Answer:

studying

Step-by-step explanation:

to prepare for a math test you have to study and study then have some one one to help you with it

4 0

3 years ago

Solve the problem 5/n = 1.5/ 1.8

Lostsunrise [7]

5/n=(3/2)/(5/5+4/5)

5/n=(3/2)/(9/5)

5/n=(3/2)*(5/9)

5/n=15/18=5/6

5/n=5/6

30/n=5

5n=30

Therefore: n=6.

5 0

4 years ago

Read 2 more answers

What is the value of x + y? How do you know? Show or explain work

enot [183]

The angle (2y - 5)° and 95° are vertical angles, then they are congruent, that is,

$2y-5=95$

Solving for y:

$\begin{gathered} 2y-5+5=95+5 \\ 2y=100 \\ \frac{2y}{2}=\frac{100}{2} \\ y=50 \end{gathered}$

The angle (3x + 55)° and 85° are vertical angles, then they are congruent, that is,

$3x+55=85$

Solving for x:

$\begin{gathered} 3x+55-55=85-55 \\ 3x=30 \\ \frac{3x}{3}=\frac{30}{3} \\ x=10 \end{gathered}$

Finally, the value of x + y is:

$x+y=10+50=60$

6 0

1 year ago

Zoe thinks of a number. She multiplies it by 3 and adds 4. She gets the same answer when she adds 5 to the number and then multi

Fiesta28 [93]

Answer:

Zoe's number is 6

Step-by-step explanation:

Let the number be 'n'

a) Multiply 'n' by 3 ⇒ n*3 = 3n

Add 4 to '3n' ⇒ 3n + 4

Add 5 to 'n' ⇒ n +5

Multiply (n+ 5) by 2 ⇒ (n +5)*2 = 2n + 5*2 = 2n + 10

3n + 4 = 2n + 10

b) 3n + 4 = 2n + 10

Subtract 4 form both sides

3n = 2n + 10 - 4

3n = 2n + 6

Subtract 2n from both sides

3n - 2n = 6

$\sf \boxed{\bf n = 6}$

8 0

2 years ago

Read 2 more answers

Thank you !!!!!!!!!!!!!!!!!!!!!!!

dedylja [7]

The mean is the average. To find it, you add all of the numbers together.

2 + 8.7 + 11.9 + 3.3 + 4.2 + 2.2 + 13.4 = 45.7

Now you divide the total by the amount of numbers you added. Because you added 7 numbers, you divide 45.7 by 7.

45.7 ÷ 7 = 6.52 (This is the mean.)

To find the median you have to put all of the numbers in order of least to greatest.

2 2.2 3.3 4.2 8.7 11.9 13.4

The median is the number in the very middle. In this case, it is 4.2.

7 0

3 years ago