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3 years ago

Rebecca is 12.5% taller than Debbie. Debbie is 64 inches tall. How tall is Rebecca?

Mathematics

2 answers:

Bas_tet [7]3 years ago

7 0

Answer:

72 inches or 6 ft

Step-by-step explanation:

12.5%=1/8 so 1+1/8=9/8 so Rebecca is 9/8 the heright of Debbie so 64*9/8=72

astra-53 [7]3 years ago

4 0

Answer:

Step-by-step explanation:

To find the % of something simply turn 12.5% to a decimal (.125) then times it by the number you want .125 * 64 = 8

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What is the mean of 6 and 4

Lera25 [3.4K]

Answer:

Mean; 5

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Range: 2

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3 years ago

Read 2 more answers

Given a geometric sequence in the table below, create the explicit formula and list any restrictions to the domain.

Makovka662 [10]

Given:

The geometric sequence is:

$n$ $a_n$

1 -4

2 20

3 -100

To find:

The explicit formula and list any restrictions to the domain.

Solution:

The explicit formula of a geometric sequence is:

$a_n=ar^{n-1}$ ...(i)

Where, a is the first term, r is the common ratio and $n\geq 1$ .

In the given sequence the first term is -4 and the second term is 20, so the common ratio is:

$r=\dfrac{a_2}{a_1}$

$r=\dfrac{20}{-4}$

$r=-5$

Putting $a=-4,r=-5$ in (i), we get

$a_n=-4(-5)^{n-1}$ where $n\geq 1$

Therefore, the correct option is B.

5 0

3 years ago

Which equation can be used to find the value of b if side a measures 8.7 cm? 8.7 + b = 54.6 17.4 + b = 54.6 26.1 + b = 54.6 34.8

Gnom [1K]

The correct equation is 8.7 + b = 54.6
because it is given that measure of side a is 8.7cm, in all other equations the values of a is different.
from the first equation we can find the value of b, that is
b = 54.6 - 8.7 = 45.9
so, value of b is 45.9cm

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3 years ago

What is the following sum ?

Hitman42 [59]

Answer: 4th option

Explanation:

I added a picture so please check it