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2 years ago

Please help (75 points) please have real answer

Mathematics

2 answers:

LuckyWell [14K]2 years ago

5 0

4) radius: 10 yards
diameter: 20 yards

5) radius: 7 inches
diameter: 14 inches

6) radius: 15 feet
diameter: 30 feet

7) radius: 23 inches
diameter: 46 inches

8) radius: 16 yards
diameter: 32 yards

9) radius: 21 feet
diameter: 42 feet

11111nata11111 [884]2 years ago

3 0

I can’t really see the picture

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The table below shows the ages of houses to the nearest year in a neighborhood. Using the age of the houses as the random variab

baherus [9]

Answer:

Step-by-step explanation:

Chance of picking a house 1 year old is 17%

Chance of picking a house 2 years old is 22%

Chance of picking a house 3 years old is 28%

Chance of picking a house 4 years old is 33%

The only graph most fitting is the top graph of the first answer choice picture or:

3 0

3 years ago

Read 2 more answers

Cube root of 8 to the 2/3

Law Incorporation [45]

I hope this helps you

3 0

3 years ago

The mean salary of actuaries is LaTeX: \mu=\$100,000????=$100,000 and the standard deviation is LaTeX: \sigma=\$36,730????=$36,7

krek1111 [17]

Answer:

The lower limit of 95% confidence interval is 99002.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $100,000

Sample mean, $\bar{x}$ = $111,000

Sample size, n = 36

Alpha, α = 0.05

Population standard deviation, σ = $36,730

First, we design the null and the alternate hypothesis

$H_{0}: \mu = \$100,000\\H_A: \mu \neq \$100,000$

We have to find the lower limit of the 95% confidence interval.

95% Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$111000 \pm 1.96(\dfrac{36730}{\sqrt{36}} )\\\\ = 111000 \pm 11998.4667 \\= (99001.5333,122998.4667)\\ \approx (99002,122999)$

The lower limit of 95% confidence interval is 99002.

6 0

4 years ago

Factor 3x^2-19x+20

dusya [7]

Answer:

(3x-4)(x-5)

Step-by-step explanation:

This is in the form

ax²+bx+c.

To factor this, we find factors of a·c that sum to b; this means factors of 3(20) = 60 that sum to -19:

60 = 1(60) or -1(-60); 2(30) or -2(-30); 3(20) or -3(-20); 4(15) or -4(-15); 5(12) or -5(-12); 6(10) or -6(-10). The only of these that sum to -19 are -4 and -15. This means we will split up -19x into -4x and -15x:

3x²-4x-15x+20

Next we group the first two terms and the last two terms:

(3x²-4x)+(-15x+20)

Factor out the GCF of each group. For the first group, this is x:

x(3x-4)

For the second group, this is -5:

-5(3x-4)

The common factor for these two groups is (3x-4):

(3x-4)(x-5)

4 0

3 years ago

Please help me! Will give brainliest!

Lena [83]

These are the answers

3 0

3 years ago