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3 years ago

20 POINTS FOR YOUR TIME! PLEASE HELP!!

1 answer:

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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There are 2 miners. One mines 19,687 m of ore in 1 hour and the other one mines the same amount of ore in 51 minutes. Find how m

kkurt [141]

19687/51 = 386.02 per minute

in 60 minutes.....386.02 * 60 = 23161.2

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3 years ago

Read 2 more answers

Last Sunday an accident caused a traffic jam 12 miles long on a straight stretch of a two lane freeway. how many vehicles do you

Alex787 [66]

Answer:

4310

Step-by-step explanation:

Average car is 14.7 ft long

63360 ft in 12 miles

So 63360/14.7 issss 4310

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8 0

3 years ago

600 or 600 decreased by 20% and then increased by 20% of the result? Which amount is larger and by how much

ohaa [14]

Answer:

The initial value of 600 is larger and larger by 24.

Step-by-step explanation:

First of all a 20% decreased of 600.

So, the new value will be $600(1 - \frac{20}{100}) = 600 \times 0.8 = 480$ .

Now, then it is increased by 20% i.e. 480 will be increased by 20%.

So, the new value will be $480(1 + \frac{20}{100}) = 480 \times 1.2 = 576$ .

Therefore, the initial value of 600 is larger and larger by (600 - 576) = 24. (Answer)

3 0

3 years ago

The positive acute angle formed by the _____ side of an angle in standard position and the x-axis is called a reference angle.

Helga [31]

Answer:

option-C

terminal

Step-by-step explanation:

We know that

reference angle is between terminal side and x-axis

so, the other side will be terminal position

so, we can write as

The positive acute angle formed by the <u>terminal</u> side of an angle in standard position and the x-axis is called a reference angle.

So,

option-C

terminal

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3 years ago

In a race , Ram covers 5 km in 20 min. How much distance will he cover in 100 min ?

bulgar [2K]

Answer:

25 km

Step-by-step explanation:

1 km in 4m

100/4 = 25

25km

4 0

3 years ago