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Pavlova-9 [17]
2 years ago
11

PLEASE HELP I'LL MARK YOU BRAINLIEST IF YOU'RE CORRECT I don't understand this​

Mathematics
2 answers:
mario62 [17]2 years ago
8 0
The y-intercept of the function is at y = -3 so the options that don’t include it are off the table. The only possible answer is option C. Option A doesn’t work because plugging in positive values would give negative numbers within the square root which isn’t defined in the real numbers.
olasank [31]2 years ago
7 0

Answer:

it would be A

Step-by-step explanation:

because the line is on the x axis and it is below the origin so it is negetive

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Please explain, and draw a picture if you can. Thanks! :)
slega [8]
--------------------------

7 0
3 years ago
10x+18&lt;-2<br>help me please!!!
sergey [27]
10x ∠-20
x∠-20/10

x∠-2

this is your answer
hope it helps
3 0
3 years ago
Read 2 more answers
A random sample of 30 households was selected as part of a study on electricity usage, and the number of kilowatt-hours (kWh) wa
grin007 [14]

Answer:

The 98% confidence interval for the mean usage in the March quarter of 2006, in kWh, was (333.87, 416.13).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 30 - 1 = 29

98% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 29 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.98}{2} = 0.99. So we have T = 2.462

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.462\frac{91.5}{\sqrt{30}} = 41.13

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 375 - 41.13 = 333.87 kWh

The upper end of the interval is the sample mean added to M. So it is 375 + 41.13 = 416.13 kWh

The 98% confidence interval for the mean usage in the March quarter of 2006, in kWh, was (333.87, 416.13).

6 0
3 years ago
One inch is about 2.54 centimeters. About how many centimeters is 4.5 inches?
algol13

Answer:

11.43

Step-by-step explanation:

cause im smart.........

4 0
2 years ago
Read 2 more answers
16 feet perimeter 5 feet long what is the width
miskamm [114]
P=2L+2W
L=Length
W=Width
P=Perimeter=16
So you have:
16=2×5+2w
Multiply 2 and 5 and get:
16=10+2w
Subtract 10 from both sides and get:
6=2w
Divide by 2 and get:
3=W
The width is 3.


8 0
3 years ago
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