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3 years ago

Help I need it badly!! first answer brainliest!

Mathematics

1 answer:

borishaifa [10]3 years ago

7 0

The answer is #1, #6, and #8.

First, let's solve for x.
2/3(6x + 12) = -24
4x + 8 = -24
4x = -32
x = -8.
Answer #1 is correct because that equation was one of the steps in our problem. Also, #6 and #8 is correct using the same logic. Therefore, we can cross out #2, #3, and #4, since #3 and #4 have the same answer which is wrong.

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Which statement explains how to calculate the mean of a set of data? O A. Subtract the smallest from the largest value. O B. Add

Nataly_w [17]

Answer: Where is the data?... where I can solve it

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

A real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found tha

egoroff_w [7]

Answer:

Between 21 years and 75 years

Step-by-step explanation:

Given that a real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found that the mean age was 48 years old, with a standard deviation of 9 years.

X the ages of home buyers is N(48, 9)

a) $30\leq x\leq 66\\|x-48|\leq 18\\|x-48|\leq 2\sigma$

Hence using Cheby chev inequality

$P(|x-48|\leq 2\sigma)\geq 1-\frac{1}{2^2} \\=0.75$

b) $25.5\leq x\leq 70.5\\|x-48|\leq 22.5\\|x-48|\leq 1.5\sigma$

$P(|x-48|\leq 1.5\sigma)\geq 1-\frac{1}{1.5^2} \\=0.556$

c) Using normal distribution we have

$P(|x-48|\leq 2\sigma)=0.95$

d) z value is 2.97

Hence x lies between

$(48-9*2.97, 49+9*2.97)\\=(21.27,74.73)$

Between 21 years and 75 years

4 0

3 years ago

2 plez!!!?!?!?!?!?!?!?!??!!??!?!?!!??!?!?! I can’t figure it out I’ve tried everything it’s due tomorrow AHAHAHAH

harkovskaia [24]

So to do this one, you have to do the problem backwards!

The equation looks like this with everything plugged in:

272.2 = 2(3.14)r

You are looking for r, so start dividing

272.2 = 2(3.14)r
136.1 = (3.14)r
43.3 = r

Therefore the radius is about 43.3 in.

I hope I helped!

5 0

3 years ago

Mr. Santos purchased pizza and soda. Each pizza cost $14.50. He spent $127 on the soda. If he spent $315.50, use the equation 14

natali 33 [55]

Answer:

13 pizzas he bought

Step-by-step explanation:

315.50 - 127 = 188.50 then do 188.50 divided by 14.50 = 13

Hope this helps :)

4 0

3 years ago

A pineapple has 9 grams of sugar per slice.

s2008m [1.1K]

Watermelon Is Correct Cos A Slice Of Pineapple Has 16 Grams Of Sugar But A Slice Of Watermelon Has 18 Grams

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3 years ago