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Serga [27]
3 years ago
5

20 POINTS FOR YOUR TIME! PLEASE HELP!!

Mathematics
1 answer:
zheka24 [161]3 years ago
3 0
For a relation to be function, every x value should have its unique image in    co-domain. If x is related to more than one y value, then that relation is not a function 
In 1, as you can see, 1 related to -7 as well as 8. Which means 1 has two images viz. -7 and 8. But for a relation to be function, x should have only one image. Thus, it is not a function.
The worst is the 4th one in which -2 has 4 images. 
Therefore, only relation B is a function.
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A zip line is setup 150ft in the air, where a person can expect to zip line at a safe declining speed to the ground as they pass
hichkok12 [17]

Answer:

139 ft

Step-by-step explanation:

So the zip line forms a right triangle.  The height of the triangle is 150 ft, and the opposite angle is 40°.  The horizontal distance covered by the zip liner can be found with trigonometry, specifically with tangent.

tan 40° = 150 / x

x = 150 / tan 40°

x ≈ 179 feet

But this includes the 40 ft long body of water, so the amount of ground covered is:

179 ft - 40 ft = 139 ft

4 0
3 years ago
Can someone help me with this please
hichkok12 [17]
<h3>Answer:  4</h3>

===========================================

Explanation:

For now, ignore the variables. Let's just focus on the coefficients 12 and 16.

The GCF of 12 and 16 is 4 because this is the largest factor they have in common.

12 = 4*3

16 = 4*4

You could create a factor tree to get the prime factorization of each number

12 = 2*2*3

16 = 2*2*2*2

Each factor tree has two copies of '2' leading to the GCF 2*2 = 4.

--------

Now let's go back to the variables. The term 12n and 16w^3 do not have any variables in common. So the final answer won't have any variables in it. If both terms had say a 'w' in them, then w would somehow be involved in the GCF. But that's not the case here. So we just stick to 4 as our answer.

--------

Side note: If you had 12n+16w^3 and you wanted to factor, then you would factor out the GCF 4 to get 12n+16w^3 = 4(3n+4w^3). Use the distribution rule to confirm this.

4 0
3 years ago
A volleyball player hit a ball with a mass of 0.25 kg. The average acceleration of the ball is (15.5m/s to the 2nd power). How m
hodyreva [135]
Using the Newton's second Law

F≠0
F=ma

m= 0.25 kg
a= 15.5 m/s

F=ma
F=(.25)(15.5)
F=3.875 N

Ta daa!
Hope that was helpful!

if it was please rate this as "Brainiest"

PS this would be better suited to the "Physics" section
6 0
3 years ago
Read 2 more answers
Sam bought an $85.00 jacket for 40% off of the regular price. How much did he pay for the jacket?
777dan777 [17]

Answer:

He paid $51

Step-by-step explanation:

$85-40%=$51

6 0
3 years ago
Read 2 more answers
What dose (2x) × (2x) × (2x) equal
Alisiya [41]
8 becasue 2×2=4×2=8 PLEASE MARK ME BRAINLIEST
5 0
3 years ago
Read 2 more answers
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