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2 years ago

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For which of the following sample sizes would it not be possible to estimate the mean of a population from the mean and standard

deviation of a sample of that population? A. 50 B. 200 C. 100 D. 5

1 answer:

Harman [31]2 years ago

4 0

Answer:

i would say a hope this helps!

Step-by-step explanation:

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The measure of angle JKL is 160.

vagabundo [1.1K]

Answer:

x + 160° 95°=360°

x=105°

8 0

2 years ago

Solve the system of linear equations by elimination.<br> -3.x – 5y = -7<br> -4x + 5y = 14

julia-pushkina [17]

Answer:

(- 1, 2 )

Step-by-step explanation:

Given the 2 equations

- 3x - 5y = - 7 → (1)

- 4x + 5y = 14 → (2)

Add the 2 equations term by term to eliminate y , that is

- 7x + 0 = 7

- 7x = 7 ( divide both sides by - 7 )

x = - 1

Substitute x = - 1 into either of the 2 equations and solve for y

Substituting into (1)

- 3(- 1) - 5y = - 7

3 - 5y = - 7 ( subtract 3 from both sides )

- 5y = - 10 ( divide both sides by - 5 )

y = 2

solution is (- 1, 2 )

8 0

2 years ago

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A rectangle garden has a width that is 8 feet less than twice the length. Find the dimensions if the perimeter is 20 feet

Lana71 [14]

Width = 4ft

Length = 6ft

<u>Explanation: </u>

Let length = l ,

So, width = 2l-8

Perimeter of rectangle = 2x(length + width)

According to the question,

$20ft = 2X(l + 2l-8)\\20ft = 2X(3l -8)\\ 10ft = 3l-8\\18ft = 3l \\ l = 6ft$

Hence,

Width = 4ft

Length = 6ft

6 0

3 years ago

Plz help need to find both answers

saul85 [17]

Answer:

I hope it helped u.

Step-by-step explanation:

7 0

3 years ago

If the ratio of boys to girls is 2:3 and there are 15 girls in your class, how many boys are there.

kakasveta [241]

Answer:

10

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers