3 years ago

Select the equivalent expression.

Mathematics

2 answers:

olasank [31]3 years ago

7 0

Answer:

Answer Choice 'A' would be correct.

lesantik [10]3 years ago

7 0

The answer to this question is A

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on a piece of paper graph the system of equations then determine which answer choice matches the graph you drew and identify the

grigory [225]

Answer:

the solution is (-2,3)

Step-by-step explanation:

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3 years ago

An arc of a circle is 3πm long, and it subtends an angle of 72° at the center of the circle. Find the radius of the circle.

Artist 52 [7]

Answer:

7.5 m

Step-by-step explanation:

circumference = 360/72 × 3π = 15π

so the radius of the circle =

15π / 2π = 7.5 m

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3 years ago

The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using premium fuel is a normally distribu

Elodia [21]

Answer:

a) Standard error = 0.5

b) 99% Confidence interval: (19.2125,21.7875)

Step-by-step explanation:

We are given the following in the question:

Population mean = 20.50 mpg

Sample standard deviation = 3.00 mpg

Sample size , n = 36

Standard Error =

$=\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{3}{\sqrt{36}} = 0.5$

99% Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.01} = \pm 2.575$

$20.50 \pm 2.575(\displaystyle\frac{3}{\sqrt{36}})= 20.50 \pm 1.2875 = (19.2125,21.7875)$

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3 years ago

What is the inverse function of h(x)=-3/5x+1/2?

viva [34]

Answer:

h−1(x)=−5x/3+5/6

Step-by-step explanation:

your answer is the second one

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2 years ago

Which of the following statements uses the multiplicative identity?

Alex73 [517]

Times table

or

division

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3 years ago

Read 2 more answers