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2 years ago

Which numbers belong to the domain of the relation {(–2, 4), (0, –3), (4, 7), (–2, 5)}?

1 answer:

8 0

Hello,
all the x values are the domain so...since you have two of -2, don't count it twice.
answer: 0,-2, and 4.
all the y values are the range, by the way.

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At Haines Elementary, 30% of the 120 teachers were male. The following school year, several new teachers were hired. The number

zhannawk [14.2K]

First you create a proportion (30/100=x/120). After you solve this, next you subtract this answer from 120. Then create a proportion for 40% (40/100=x/120). Then add this number to the first answer you got when you subtracted the answer from your first proportion from 120.

6 0

2 years ago

A box with a square base and no top is to be made from a square piece of carboard by cutting 7 in. squares from each corner and

mojhsa [17]

Answer:

The size of the cardboard should be $26 in\ by\ 26in$

Step-by-step explanation:

The diagram for this question is shown on the first uploaded image

The volume of the box is $V = 2527 \ in ^3$

The length and the Width of the card is

L = W = Z

From the question we are told that 7 in squares were cut from each corner

So the length and the width of the box would be

L = W = (Z - 7)

And the height would be H = 7 in

Mathematically the volume of the box can be represented as

$V = Length\ of\ bx * Width\ of\ box * Height\ of\ box$

So the Volume would be

$V = (Z-7)(Z-7) * 7$

Substituting values

$(Z-7) ^2 = \frac{2527}{7}$

$(Z-7) ^2 = 361$

$(Z-7) ^2 = 19^2$

=> $Z - 7 = 19$

$Z = 19 + 7$

$Z =26 \ in$

7 0

2 years ago

alana found a sofa she wants to buy for her new apartment.the sofa cost $950.00 plus tax if Alana paid $999.40 for the sofa, wha

Yuliya22 [10]

Answer:

5.2%

Step-by-step explanation:

((999.4 × 100) ÷ 950) - 100

(99,940 ÷ 950) - 100

105.2 - 100

5.2

4 0

2 years ago

Vivi is a drummer for a band. She burns 756 calories while drumming for 3hours. She burns the same number of calories per hour.

lions [1.4K]

This question uses the concept of the division.

Vivi, the band drummer, burns 765 calories in 3 hours. And she burns these calories at the same rate. Which means she burns the same amount of calories per hour.

Thus, the set up equation for this question will be:

Energy burnt in 3 hours=756 calories

Therefore, Energy burnt in 1 hour = $\frac{756}{3} =252$ Calories.

Thus, the required answer is that Vivi burns 252 Calories of energy per hour while drumming.

7 0

2 years ago

Which simplified fraction is equal to 0.53 with the three repeating?

topjm [15]

Answer:

24/46 = 0.52173913

8/15 = 0.53333333

42/90 = 0.46666666

5/9 = 0.55555555

answer is 8/15

8 0

2 years ago