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3 years ago

Which of the following choices evaluates 2f^2 + (h-g)^3 when f=2, g=3, and h=4

Mathematics

1 answer:

denis23 [38]3 years ago

3 0

The answer is 9. Just substitute the correct numbers where they go and plug it into your calculator

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Solve for X.<br> x-3+2(4x + 7) = -3(x+1)<br> Simplify your answer as much as possible.

vladimir1956 [14]

Answer:

x= -7 / 6

Step-by-step explanation:

4 0

3 years ago

An automobile manufacturer claims that its car has a 33.7 miles/gallon (MPG) rating. An independent testing firm has been contra

Gnoma [55]

Answer:

$z=\frac{34-33.7}{\frac{1.6}{\sqrt{120}}}=2.05$

And the p value would be given by:

$p_v= 2*P(z>2.05) = 0.0404$

And since the p value is higher than the significance level we have enough evidence to fail to reject the null hypothesis.

Step-by-step explanation:

Data given and notation

$\bar X=34$ represent the sample mean

$\sigma=\sqrt{2.56}= 1.6$ represent the population standard deviation

$n=120$ sample size

$\mu_o =33.7$ represent the value that we want to test

$\alpha=0.02$ represent the significance level for the hypothesis test.

z would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

System of hypotheses.

We need to conduct a hypothesis in order to check if the true mean is 33.7 mpg or no, the system of hypothesis would be:

Null hypothesis: $\mu =33.7$

Alternative hypothesis: $\mu \neq 33.7$

Since we know the population deviation, is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

Calculate the statistic

We can replace in formula (1) the info given like this:

$z=\frac{34-33.7}{\frac{1.6}{\sqrt{120}}}=2.05$

And the p value would be given by:

$p_v= 2*P(z>2.05) = 0.0404$

And since the p value is higher than the significance level we have enough evidence to fail to reject the null hypothesis.

6 0

3 years ago

Solve the equation for all real values of x.

amm1812

The correct answer is (c) x equals pi times k for all k ∈ ℤ

6 0

3 years ago

The regular price of a color TV is $585.83. During a sale, Hill TV is selling the TV for $526.77. Determine the percent decre

Ainat [17]

The actual price of the TV is $ 566.37. During a sale, it was sold at $ 502.21. 11.3282% decrease in the price of the TV.

First, we need to the difference in the price.

Let us call the actual price M.R.P and the value it was sold for as S.P

SO we have M.R.P = $ 566.37 and S,P = $ 502.21. THe difference D = M.R.P -S.P = $566.37-$502.21 = $64.16

To find the percent decrease will have to compare the difference with M.R.P and multiply it by a hundred so we get,

D% = (D/M.R.P)x 100 = 64.16/566.37 x100 = 11.3282 %.

Discount pricing is a type of promotional pricing strategy that involves lowering the original price of a product or service with the goal of increasing traffic, moving inventory, and increasing sales. Consumers are attracted to low prices because they want to feel they are getting a good deal.

The difference between what a consumer is willing to pay for a service and the market price. The potential price of Rs.250 and the actual price he considers is Rs.200.

Learn more about the actual price at

brainly.com/question/19104371

#SPJ1

8 0

2 years ago

Find the missing endpoint if S is the midpoint of RT <br><br>R(-9,4) and S(2,-1) ; Find T

liraira [26]

Answer:

T is at (13,-6)

Step-by-step explanation:

x-coordinate of T: from -9 to 2, there's 11 units, so you add 11 to 2 to find the x-coordinate of T, which is 13.

y-coordinate of T: from 4 to -1 there's -5 units, so you subtract 5 from -1 to find the y-coordinate of T, which is -6.