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2 years ago

I need help finding the answer to this problem

Mathematics

2 answers:

Mrac [35]2 years ago

8 0

Sorry do know that one !!☹️

Verdich [7]2 years ago

8 0

Answer:

A - moving at a constant speed

B - decelerating

C - moving at a constant speed

D - accelerating

Step-by-step explanation:

When the line is flat the car is moving at a constant speed as the speed is not changing

When the line is a positive gradient the car is accelerating

When the line is a negative gradien the car is decelerating

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2sin^2 2x=2 In the domain [0, 2pi)

djverab [1.8K]

Please type this as 2(sin 2x)^2=2 2sin^2 2x=2 is confusing.

Reducing this expression: (sin 2x)^2 = 1

Taking the sqrt of both sides, sin 2x = plus or minus 1

If sin 2x = 1, then 2x must be pi/2 or 3pi/2, and so x must be pi/4 or 3pi/4.

Now you do this for sin 2x = -1.

8 0

2 years ago

The sale is being held from 11 a.m to 7 p.m on sunday, and from 9 a.m to 7 p.m on monday. How many hours will the sale last?

PSYCHO15rus [73]

8+10=18as your final answer

3 0

2 years ago

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A professor at a university wants to estimate the average number of hours of sleep the students get during exam week. The profes

balandron [24]

Answer:

The sample size is $n = 2$

Step-by-step explanation:

From the question we are told that

The margin of error is E =4.266

The standard deviation is $\sigma = 2.539$

From the question we are told the confidence level is 99% , hence the level of significance is

$\alpha = (100 - 99 ) \%$

=> $\alpha = 0.01$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 2.58$

Generally the sample size is mathematically represented as

$n = [\frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ] ^2$

=> $n = [\frac{2.58 * 2.539 }{4.266} ] ^2$

=> $n = 2$

6 0

2 years ago

What additional information could you use to show that ΔSTU ≅ ΔVTU using SAS? Check all that apply.

Ugo [173]

I believe the correct answers are:

UV = 14 ft and m∠TUV = 45°
ST = 20 ft, UV = 14 ft, and m∠UST = 98°

Or, in other words, Options A and D.

6 0

3 years ago

Read 2 more answers

What kind of triangle is this?

Sindrei [870]

Right angle
Te reason being is that it has a 90° corner.

Hoped this helped

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2 years ago

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