3 years ago

Help me plzzzzzzzzzzzzz

1 answer:

7 0

Interquartile range is when you subtract Q3 and Q1. The Q3 is 54, Q1 is 42. We subtract that together and we get 12, so the second option.

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PT=4x+5 and TQ =6x-7

gregori [183]

Answer:

Step-by-step explanation:

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4 years ago

Find n. Perimeter = 86 in.

LuckyWell [14K]

O_o Whhhhaaaaat?? How does that make sense.

7 0

3 years ago

5t+5/4-1=4t-3/5<br>maths <br>class 8

Aleks [24]

Answer:

3.4

Step-by-step explanation:

5t+5/4-1=4t-3/5. cross multiply over the bracket

(5t+5)5=(4t-3)(4-1)

25t + 25 = -16t -4- 12 - 3

Combine the like terms

25t - 16t +4t = -4-12-3-25

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3 years ago

Janice works at the We Are Cells. She earns $650 per week plus a 15% commission on all new cell phone contracts that she sells e

sertanlavr [38]

Answer:

y=650+15x

Step-by-step explanation:

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7 0

4 years ago

The u.s. department of health and human services collected sample data for 772 males between the ages of 18 and 24. that sample

soldier1979 [14.2K]

The 99% confidence interval for the true mean is given by:

$\bar{x}\pm z_{\alpha/2} \frac{\sigma}{\sqrt{n}}$

where:

$\bar{x}$ is the sample mean = 69.7
$\sigma$ is the standard deviation = 2.8
$z_{\alpha/2}$ is the test statistics = 2.58 for for 99% confidentce interval.
n is the sample size = 772.

Therefore, the 99% confidence interval is:

$69.7\pm2.58\left( \frac{2.8}{\sqrt{772}} \right)=69.7\pm2.58(0.1008) \\ \\ =69.7-0.26\leq\mu\leq69.7+0.26 \\ \\ =69.44\leq\mu\leq69.96$

6 0

3 years ago

Read 2 more answers