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3 years ago

30 points!

Mathematics

2 answers:

Andrei [34K]3 years ago

7 0

Its the first one. Beacuse she gains speed then slows down and stops but then starts up again then slows down. Hope this helps!

Sphinxa [80]3 years ago

7 0

Answer:

Step-by-step explanation:

Alright, lets get started.

There are 6 different stages of Tina's bike ride.

First: When she starts, her speed continuous increases means graph goes up.

Second : After seeing the stop sign, she slows down and speed reached to zero.

Third : She waits at stop sign, so, there is zero speed for some time.

Fourth : She again starts but at lower speed than previous speed.

Fifth : She makes a ride with steady speed.

Sixth : She finally slow down her speed and ends to zero.

So, the answer is second graph.

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-8(2x +x )/-2y , if x=-5, y=2 and z=0

Masteriza [31]

Answer:

Step-by-step explanation:

x=-5, y=2 and z=0

-8(2x +x )/-2y =(-8•3x)/-2y = [-8•3(-5)] / (-2•2) = 120/(-4) =-30

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3 years ago

What is the answer of -16 divided by 8 times 8 plus -7

BlackZzzverrR [31]

Answer:

-16

Step-by-step explanation:

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3 years ago

is picking out some movies to rent, and he has narrowed down his selections to 5 documentaries, 7 comedies, 4 mysteries, and 5 h

pogonyaev

Answer: 91

Step-by-step explanation:

Given : The number of documentaries = 5

The number of comedies = 7

The number of mysteries = 4

The number of horror films =5

The total number of movies other than comedy = 14

Now, the number of possible combinations of 9 movies can he rent if he wants all 7 comedies is given by :-

$^7C_7\times^{14}C_2\\\\\dfrac{7!}{7!(7-7)!}\times\dfrac{14!}{2!(14-2)!}\\\\=(1)\times\dfrac{14\times13}{2}\\\\=91$

Therefore, the number of possible combinations of 9 movies can he rent if he wants all 7 comedies is 91 .

5 0

3 years ago

Find the volume of the following compound shape.

Bess [88]

<h3>Given:</h3>

Cone
Cylinder

<h3>Volume of the cone:</h3>

$v = \frac{1}{3} \pi {r}^{2} h$

$v = \frac{1}{3} \times \pi \times {10}^{2} \times 10$

$v = 1047.20 \: {cm}^{3}$

<h3>Volume of the cylinder:</h3>

$v = \pi {r}^{2} h$

$v = \pi \times {10}^{2} \times 10$

$v = 3141.59 \: {cm}^{3}$

<h3>Total volume:</h3>

$v = 1047.20 + 3141.59$

$v = 4188.79 \: {cm}^{3}$

Hence, the volume of the given cone shape is 4188.79 cubic centimeters.

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2 years ago

Read 2 more answers

H = {(2, 5), (3, 5), (4, 5), (5, 5), (6, 5)} Is H a function and why?.

mixer [17]

Answer:

Yes, each x-value has a unique y-value.

Step-by-step explanation:

This is a function because each x-value has its own y-value. If this is not the case then it is not a function, because then, two points with the same x-value and different y-values would fail the VLT.

Your graph does not have overlaps and each x-value has a unique y-value

VLT

The vertical line test (VLT) is a simple method that mathematicians made because they were lazy to make a table of values and find duplicates.

Passing the VLT means that if you drew a vertical line anywhere on the graph, it would only go through one point.
Failing the VLT would mean that the vertical line

A quick way to check if it is a function is by looking for duplicates of x-values and check that the duplicates have the same y-value.

-Chetan K

Images/Examples

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2 years ago