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Vlad [161]
3 years ago
5

Find the area, seventh grade math problem please help

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
6 0

Answer:

78 ft²

Step-by-step explanation:

A=\frac{a+b}{2} h

A=\frac{11+15}{2}6

78

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Eight more than the product of a number and 4 is 9 . Use the variable w for the unknown number.
Stolb23 [73]
9* (w+8)=4 is the equation
8 0
3 years ago
Read 2 more answers
PLS HELP
Fiesta28 [93]

Answer:

1. 1/3 x 2/2 = 1/3

2. 1/4 x 5/5 = 1/4

3. 1/6 x 4/4 = 1/6

4. 9/8 x 3/4 = (9x3)/(8x4) = 27/32

4. 4/5 x 2/2 = 4/5

Step-by-step explanation:

n/n = 1

7 0
2 years ago
A financial advisor is analyzing a family's estate plan. The amount of money that the family has invested in different real esta
Pachacha [2.7K]

Answer:

The amount of money separating the lowest 80% of the amount invested from the highest 20% in a sampling distribution of 10 of the family's real estate holdings is $238,281.57.

Step-by-step explanation:

Let the random variable <em>X</em> represent the amount of money that the family has invested in different real estate properties.

The random variable <em>X</em> follows a Normal distribution with parameters <em>μ</em> = $225,000 and <em>σ</em> = $50,000.

It is provided that the family has invested in <em>n</em> = 10 different real estate properties.

Then the mean and standard deviation of amount of money that the family has invested in these 10 different real estate properties is:

\mu_{\bar x}=\mu=\$225,000\\\\\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}=\frac{50000}{\sqrt{10}}=15811.39

Now the lowest 80% of the amount invested can be represented as follows:

P(\bar X

The value of <em>z</em> is 0.84.

*Use a <em>z</em>-table.

Compute the value of the mean amount invested as follows:

\bar x=\mu_{\bar x}+z\cdot \sigma_{\bar x}

   =225000+(0.84\times 15811.39)\\\\=225000+13281.5676\\\\=238281.5676\\\\\approx 238281.57

Thus, the amount of money separating the lowest 80% of the amount invested from the highest 20% in a sampling distribution of 10 of the family's real estate holdings is $238,281.57.

6 0
2 years ago
Hi! I just need help with the last problem, number 12. I did all of the rest. Please reply ASAP, thank you!
Fed [463]

Answer:

rocky???

Step-by-step explanation:

5/2 3/8

3 0
3 years ago
7. Solve for 6s3(5s2)(3s4) =
gayaneshka [121]

Simplify  (we cannot solve if there is no equals)

6s^3(5s^2)(3s^4)

multiply the coefficients, add the exponents since the bases are the same

(6*5*3) s^(3+2+4)

90 s^(9)

5 0
3 years ago
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