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4 years ago

Which scenario could be represented by the given graph?

Mathematics

2 answers:

mixer [17]4 years ago

8 0

The correct answer to this question is D.

Alex Ar [27]4 years ago

5 0

Answer:

Choice D

Step-by-step explanation:

The distance increases at a steady rate from time = 0 to time = 1.

Then no progress is made between time = 1 and time = 2.

Then the distance increases at the same steady rate from time =2 to time = 3.

Finally, no progress is made between time = 3 and the end of the graph.

Eliminate Choices A, B and C immediately, because none of these scenarios involves a stop and wait.

That leaves only Choice D as a reasonable verbal description of what's happening here.

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A climber is on a hike. after 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of of 700 feet. What

lora16 [44]

Answer:

75 feet per hour

Step-by-step explanation:

Here, you are essentially given two points on a graph, only they are not graphed. You can visualize (2, 400) and (6, 700), and use the rate of change formula to find the average rate of change.

Then, simplify until you arrive at your solution.

$\frac{y_{2} -y_{1} }{x_{2} -x_{1}} =\frac{700-400}{6-2} =\frac{300}{4} = 75$ feet per hour

8 0

3 years ago

A new weight-watching company, Weight Reducers International, advertises that those who join will lose an average of 10 pounds a

Ksenya-84 [330]

Answer:

The calculated value Z = 2.53 >1.96 at 0.05 level of significance

Null hypothesis H₀ is rejected

we accepted alternative hypothesis

we conclude that those joining Weight Reducers will lose greater than 10 pounds

Step-by-step explanation:

Step(i):-

Given the random sample size 'n' =50

Given data a new weight-watching company, Weight Reducers International, advertises that those who join will lose an average of 10 pounds after the first two weeks. The standard deviation is 2.8 pounds.

The mean of the Population 'μ' = 10pounds

The standard deviation of the Population 'σ' = 2.8 pounds

Given mean of the sample 'x⁻' = 9

Level of significance ∝ = 0.05

Step(ii):-

Null hypothesis :H₀: μ<10

Alternative hypothesis: H₁: μ>10

The test statistic

$z= \frac{x^{-} - mean}{\frac{S.D}{\sqrt{n} } }$

$z= \frac{9 - 10}{\frac{2.8}{\sqrt{50} } } = \frac{-1}{0.395} = 2.53$

The calculated value Z = 2.53

The tabulated value Z = 1.96 at 0.05 level of significance

Step(iii):-

The calculated value Z = 2.53 >1.96 at 0.05 level of significance

Null hypothesis H₀ is rejected

we accepted alternative hypothesis

Conclusion:-

we conclude that those joining Weight Reducers will lose greater than 10 pounds

6 0

4 years ago

vova2212 [387]

Answer: Because we are trying to find the x-intercepts and the y-intercepts That would be (C)

Step-by-step explanation:

Self explanatory question, you set a quadratic equation to zero

For example: x 2 – 6 x = 16 equals to x 2 – 6 x – 16 = 0

Then, you would factor, that equals to (x – 8)( x + 2) = 0

(X-8)=0 (X+2)=0

X+2=0

-2 =-2

X=-2

X-8=0

+8 =+8

X=-8

To check you would simply plug in the values into the quadratic equation. They would both equal 16=16

:) Multiple choices are difficult but the best answers are C or D GO WITH YOUR GUT!

3 0

4 years ago

Suppose that YM has a length of 12in and its distance from point L is 5in find the radius of circle L to the nearest tenth

sashaice [31]

We know that
applying the Pythagoras theorem
LM²=LV²+VM²
LM is the radius of the circle
LV=5 in
VM=12/2----> 6 in
so
LM²=5²+6²-----> LM²=61------> LM=7.81 in------> LM=7.8 in

the answer is
7.8 in

8 0

3 years ago

The FAFSA4caster cannot help students:

My name is Ann [436]

Answer:

is D perform better on standardized test

Step-by-step explanation:

IT IS CORRECT TRUST! you welcome

3 0

3 years ago