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4 years ago

If y(x) = 3x + 2, what is (5)?

Mathematics

1 answer:

Liono4ka [1.6K]4 years ago

5 0

Answer:

Step-by-step explanation:

y(5) = 3(5) + 2 = 15 + 2 = 17

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I need help on this algebra

Gnesinka [82]

Since the population increases by 7 percent each year, we can multiply 850 by 1.07 seven times. In other words, we can do 850 • 1.07^7. This is equal to about 1365.

3 0

3 years ago

Circle X has radius r X = 6 units and circumference C X = 12 π units. Circle Y has circumference C Y = 6 units. Which equation i

slega [8]

Answer:

$ry=\frac{rx}{2\pi }$

Step-by-step explanation:

we know that

The circumference of a circle is equal to

$C=2\pi r$

we have

Circle X

$rx=6\ units$

$Cx=12\pi\ units$

Circle Y

$Cy=6\ units$

Find the radius ry

we know that

$Cy=2\pi ry$

substitute the value of Cy

$6=2\pi ry$

$ry=\frac{6}{2\pi }$

Remember that the value of rx is $rx=6\ units$

substitute

$ry=\frac{rx}{2\pi }$

6 0

3 years ago

The Eagle Ridge Contractors Association claims the average price of a home in their subdivision is $125,150 with a standard devi

jonny [76]

Answer:

The test value is z = -1.31.

Step-by-step explanation:

The Eagle Ridge Contractors Association claims the average price of a home in their subdivision is $125,150.

This means that the null hypothesis is that the mean is this value, that is:

$H_0: \mu = 125150$

The Eagle Ridge Home Owners Association is interested in knowing if the costs of homes for sale in this subdivision are actually lower than claimed.

This means that at the alternate hypotehsis we test that the mean is lower than that value, that is:

$H_a: \mu < 125150$

The test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

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

125150 is tested at the null hypothesis:

This means that $\mu = 125150$

Standard deviation of $7,350.

This means that $\sigma = 7350$

A sample of 36 homes for sale in this subdivision had an average selling price of $123,550.

This means that $n = 36, X = 123550$

Compute the test value.

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{123550 - 125150}{\frac{7350}{\sqrt{36}}}$

$z = -1.31$

The test value is z = -1.31.

5 0

3 years ago

Can anyone solve these? Thanks.

sergiy2304 [10]

Graph A is a linear function, while Graph B is an exponential funtion.

5 0

3 years ago

What is the exterior angle of triangle ABC These are the points: A=3, B=10, C=6

igor_vitrenko [27]

Based off of what I can see in the photo (its too blurry to know for sure) and what I think you're asking:

The angle of a triangle always adds up to 360degrees, so base it on that and the acute and obtuse angles and get the degrees from there, the angle would be those degrees you find or <10, 5, 4 (what I assume is a 5)

3 0

4 years ago