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2 years ago

In the equation y=3x+15 What is the slope and y intercept?

1 answer:

4 0

The slope is 3 and the y intercept is 15. To know what is know which is the slope you'll find the number you are multiplying x by and the y intercept is what you are adding to the slope.

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Write the inequality that goes with the graph shown.

m_a_m_a [10]

Answer:

—1=<x<-3

Since

X<-3

X>=-1

Not shaded means including.

8 0

3 years ago

U.S. Postal Service regulations state that a package can be mailed using Parcel Post rates if it weighs no more than 80 pounds.

Citrus2011 [14]

5 because 80/14 is 5.714

3 0

3 years ago

What is the rate of change (2,20) and (5,47) ?

ipn [44]

Answer:

3,27

Step-by-step explanation:

3 0

3 years ago

A study was recently conducted to estimate the mean cholesterol for adult males over the age of 55 years. From a random sample o

Komok [63]

Answer: Correct critical value = 2.2622

Step-by-step explanation:

Confidence interval for population mean when population standard deviation is unknown:

$\overline{x}\pm t_{\alpha/2}\dfrac{s}{\sqrt{n}}$ , where $\overline{x}$ = sample mean, n= sample size, s= sample standard deviation, $t_{\alpha/2}$ = two-tailed t value.

As per given: n= 10

degree of freedom : df = n-1=9

$\overline{x}=242.6\\\\s=73.33\\\\\alpha=5\%=0.05$

Critical t-value : $t_{\alpha/2,df}=t_{0.05/2,9}=t_{0.025,9}=2.2622$

So, the 95 percent confidence interval estimate for the mean :

$242.6\pm (2.2622)\dfrac{73.33}{\sqrt{10}}\\\\=242.6\pm (2.2622)(23.19)\\\\\approx242.6\pm52.46\\\\=(242.6-52.46,\ 242.6+52.46)\\\\=(190.14,\ 295.06)$

The 95 percent confidence interval estimate for the mean:(190.14, 295.06)

8 0

3 years ago

Which equation results from taking the square root of both sides of (x + 9)2 = 25?

Alex_Xolod [135]

Answer:

√2.37+ 3 √9 = √5. 3 is the last one

x+9 =+25

Step-by-step explanation:

(x+9)2= 25 This means x= 3.5 and the square root of x = √3.5 = 1.87 square root of 9 x 2 = √18 =4.24

We can also see 18+7 =25

√5.65 √5

this is 25 = 5 so it's the last one.

as 2.37+ 3 √9 = √5. 3

6 0

3 years ago

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