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2 years ago

What is 12.5% of 72? A. 9 B. 10 C. 12.5 D. 90

Mathematics

2 answers:

Scilla [17]2 years ago

7 0

Answer:

Step-by-step explanation:

12.5/100 = 0.125

Since there were 2 zeros, we took the point 2 places back.

0.125 in fraction = 1/8

1/8 x 72/1 = 9/1

= 9

katrin2010 [14]2 years ago

5 0

Answer:

A. 9

Step-by-step explanation:

% = 1\100

SO..

12.5% = 12.5\100

the word 'of' is the same as the mathematical multiply.

12.5\100 x 72 = 9

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Find q<br> (7q-46)<br> (3q+6)

kap26 [50]

Answer:

$q = 22$

Step-by-step explanation:

The angle measure of a straight line is (180) degrees As given in the picture, line (AC) is a straight line, thus its angle measure is (180) degrees. Angles (ABD) and (DBC) make up line (AC). Therefore, one can conclude that the sum of angles (ABD) and (DBC) is (180) degrees. Form an equation, simplify and use inverse operations to solve for the unknown parameter (q).

$($

Substitute for the angle measures,

$(7q-46)+(3q+6)=180$

Simplify,

$10q-40=180$

Inverse operations,

$10q-40=180\\\\10q = 220\\\\q = 22$

8 0

3 years ago

Read 2 more answers

Guys pls help me!!!!!

marusya05 [52]

Answer:#3

Step-by-step explanation:

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2 years ago

xP(x)00.2510.0520.1530.55Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal pl

Nookie1986 [14]

The Solution:

Given:

Required:

Find the standard deviation of the probability distribution.

Step 1:

Find the expected value of the probability distribution.

$E(x)=\mu=\sum_{i\mathop{=}0}^3x_iP_(x_i)$ $\begin{gathered} \mu=(0\times0.25)+(1\times0.05)+(2\times0.15)+(3\times0.55) \\ \\ \mu=0+0.05+0.30+1.65=2.0 \end{gathered}$

Step 2:

Find the standard deviation.

$Standard\text{ Deviation}=\sqrt{\sum_{i\mathop{=}0}^3(x_i-\mu)^2P_(x_i)}$ $=(0-2)^2(0.25)+(1-2)^2(0.05)+(2-2)^2(0.15)+(3-2)^2(0.55)$ $=4(0.25)+1(0.05)+0(0.15)+1(0.55)$ $=1+0.05+0+0.55=1.60$

Thus, the standard deviation is 1.60

Answer:

1.60

8 0

1 year ago

Bernardo and Ogechi were asked to find an explicit formula for the sequence 1,8,64,512,

Artist 52 [7]

Answer:

Bernardo

Step-by-step explanation:

7 0

2 years ago

Use the given equation to find the number<br><br> 1/2x-19.7=-4.1

Leokris [45]

Answer:

the number is 31.2

Step-by-step explanation:

Given that:

1/2x-19.7=-4.1

Adding 19.7 on both sides:

1/2x-19.7 + 19.7=-4.1 + 19.7

1/2x = 15.6

Multiplying both sides by 2:

x = 15.6 * 2

x = 31.2

So the number is 31.2

i hope it will help you!

7 0

2 years ago