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saul85 [17]
3 years ago
14

3) The graph of the equation y = x2 + 1 is shown. Which equation will shift the graph up 7 units? A) y = x2 + 7 B) y = x2 - 8 C)

y = x2 + 8 D) y = (x+7)2
Mathematics
2 answers:
Elina [12.6K]3 years ago
6 0
Your answer is C. (1+7=8)
Anna71 [15]3 years ago
3 0

Answer:

C) y=x^2+8

Step-by-step explanation:

the function

y=x^2+1

Is a parabola that crosses the y-axis at +1.

So in a function of the form:  y=x^2+a, the number a indicates the point at which the graph of the function crosses the y-axis.

So, to find a function that is 7 units above, we need to add 7 to the number a.

In this case a = + 1

so adding 7:

+ 1 + 7 = + 8

So the resulting function, which is 7 units above is:

y=x^2+8

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A tennis ball is in a cylindrical container. The ball has a radius of 5 inches and the cylinder has a height of 8 inches. How mu
Nostrana [21]

Answer:

104.7 in^3

Step-by-step explanation:

Step one:

given data

The ball has a radius of 5 inches and

the cylinder has a height of 8 inches

Step two:

The volume of the cylinder

v= \pi r^2 h

substitute our data

v= 3.142*5^2*8\\\\v=628.4in^3

The volume of the ball

v=4/3 \pi r^3

substitute our data

v= 4/3 *3.142*5^3\\\\v= 523.7 in^3

The space will have a volume of

=628.4-523.7

=104.7 in^3

7 0
2 years ago
A sample of 16 ATM transactions shows a mean transaction time of 67 seconds with a standard deviation of 12 seconds. Find the te
vredina [299]

Answer:

b. 2.333

Step-by-step explanation:

Test if the mean transaction time exceeds 60 seconds.

At the null hypothesis, we test if the mean transaction time is of 60 seconds, that is:

H_0: \mu = 60

At the alternate hypothesis, we test if it exceeds, that is:

H_1: \mu > 60

The test statistic is:

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.

60 is tested at the null hypothesis:

This means that \mu = 60

A sample of 16 ATM transactions shows a mean transaction time of 67 seconds with a standard deviation of 12 seconds.

This means that n = 16, X = 67, s = 12

Value of the test statistic:

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{67 - 60}{\frac{12}{\sqrt{16}}}

t = \frac{7}{3}

t = 2.333

Thus, the correct answer is given by option b.

5 0
3 years ago
How many times will a 37inch tire rotate on a 5 mile road?
Ilya [14]

circumference of the tire = 37 x Pi = 116.24 inches

1 mile = 5280 feet = 63360 inches

63360/116.24 = 545.08 revolutions per mile

545.08 x 5 = 2725.4 revolutions in 5 miles


 Round answer as needed.

7 0
3 years ago
State the solution(s)<br>x²+12x+32=0<br><br>please ​
kobusy [5.1K]

Answer:

There would be 2 answers because it is a quadratic equation

x=4 or x=8

7 0
3 years ago
Read 2 more answers
Solve |3x + 3) = 15.
prisoha [69]
It’s B, because you do 3-15 and that equals 12 and then you do 3 divided by 12 and that’s 4.
8 0
3 years ago
Read 2 more answers
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