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2 years ago

HELP!! 4 questions !!! easy points!! 25 points!! please answer quick!

Mathematics

1 answer:

Afina-wow [57]2 years ago

4 0

Step-by-step explanation:

(i) From the graph value of x varies -3 to 3 i.e.

$-3\leq x\leq 3$

and domain in the input values which function can take

So, option (d) is correct.

(ii) option (d) is correct as it represent the function $y=x$ . While all the other function does not satisfy the given conditions.

(iii) $(-14,-15), (-9,-10)$ are the parts of solution pair.

(iv) Option (c) and (d) represents the function as each element of the first set has a unique image in the second set.

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If xy=0, what must be true about either x or y

evablogger [386]

Answer:

either x or y must equal 0

Step-by-step explanation:

ts given that xy = 0

Remember that product of two numbers can be zero only if:

Both of them are zero or Either of them is zero as zero multiplied to any non-zero number will always be equal to zero. This is known as Zero Product Property.

So, if the product of x and y is equal to 0 there are two possibilities:

Both x and y are equal to 0

Either x or y must be equal to 0

Note that the condition both x and y are equal to zero is not a must condition, because even if one of them is equal to zero, the entire expression will be equal to zero.

Hence, the condition which has to be true in all cases for xy = 0 is:

either x or y must equal 0

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2 years ago

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2 years ago

If the area of the cube is 2 1/2 what is the surfece area

mariarad [96]

Answer:

37.5

Step-by-step explanation:

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2 years ago

Robert says his better long jump was about 1 foot farther than May's better long up. Is he correct? Explain.

Alborosie

We need mor information to tell what there best long jumps are

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2 years ago

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a ferris wheel rotates 9pi/8 radians prior to making a stop the total height of the ferris wheel is 246 ft how far around did th

Zinaida [17]

Answer:

ferris wheel travel approx = 434.72 ft

Step-by-step explanation:

given data

wheel rotates = 9pi/8 radians

total height of the ferris wheel = 246 ft

solution

we can say here that height of the ferris wheel is same as the diameter of the wheel

and wheel is circular in shape

so we get here first radius of wheel that is

radius = half of diameter ..........................1

put here value and we get

radius = 0.5 × 246

radius = 123 ft

and

wheel travel distance = length of arc by a angle of wheel rotates

so here length of arc will be

arc length = radius × wheel rotates angle .....................2

put here value and we get

arc length = 123 × $\frac{9\pi }{8}$

arc length = 434.7178 ft

so ferris wheel travel approx = 434.72 ft

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2 years ago