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2 years ago

Jackie made $28 babysitting last week. her brother joe made only 86% as much as she did. how much did joe make?

1 answer:

7 0

Her brother joe made $52.08. First you need to make the percent into a decimal, like this 86% => .86. Then multiply .86 to $28. After that add what you got to $28.

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Fifty people were surveyed about their favorite flavor of frozen yogurt. The results of the survey are displayed in the circle g

Ksju [112]

The answer is 2. This is because 2 = 4% of 50.

You can think of it like this:

4 is 4% of 100.

50 is half of 100.

Therefore, 4% of 50 is HALF of 4% of 100.

4 divided by 2 = 2

4 0

2 years ago

Suppose the force acting on a column that helps to support a building is a normally distributed random variable X with mean valu

Sauron [17]

Answer:

(1) 0.4207

(2) 0.7799

Step-by-step explanation:

Given,

Mean value,

$\mu = 15.0$

Standard deviation,

$\sigma = 1.25$

(1) P(X ≥ 17.5) = 1 - P( X ≤ 17.5)

$= 1- P(\frac{x-\mu}{\sigma} \leq \frac{17.5-\mu}{\sigma})$

$=1-P(z\leq \frac{17.5 - 15}{1.25})$

$=1-P(z\leq \frac{2.5}{1.25})$

$=1-P(z\leq 2)$

$=1- 0.5793$ ( By using z-score table )

= 0.4207

(2) P(14 ≤ X ≤ 18) = P(X ≤ 18) - P(X ≤ 14)

$=P(z\leq \frac{18 - 15}{1.25}) - P(z\leq \frac{14 - 15}{1.25})$

$=P(z\leq \frac{3}{1.25}) - P(z\leq -\frac{1}{1.25})$

$=P(z\leq 2.4) - P(z\leq -0.8)$

= 0.9918 - 0.2119

= 0.7799

8 0

2 years ago

What is the area of the triangle?<br> 7<br> 2

Andreas93 [3]

Answer:

7 square units

Step-by-step explanation:

A = 7 x 2 x 1/2

A = 14 x 1/2

A = 7

Hope that helps!

5 0

2 years ago

1. The aspect ratio of a display is the proportional relationship between the width of a

Shkiper50 [21]

Answer:160 inches

Step-by-step explanation: it cant be less som wer left with 97 and 160 97 is not 16:9

8 0

2 years ago

Can YOU solve this?

Eddi Din [679]

I'm not sure, but I think it's because he didn't show the steps of him moving the X around?

6 0

3 years ago