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Eduardwww [97]
3 years ago
15

Solve the system of equations by substitution

Mathematics
1 answer:
9966 [12]3 years ago
8 0

Answer:

A

Step-by-step explanation:

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The time it takes to burn the entire candle
QveST [7]

Answer:

Step-by-step explanation:

Time it takes to burn entire cancle 10 hrs.

the heights from 0 hrs to 4 hrs is at first 10 inches tall but then its 6 inches tall when it hits the 4 hr mark.

it burns one inch every hr

the origional height is 10 inches

5 0
3 years ago
Help would be more then appreciated
BartSMP [9]

Answer:

a

Step-by-step explanation:

8 0
3 years ago
The owner of a sporting goods store in Phoenix, Arizona surveys her customers to determine the proportion of customers that play
BabaBlast [244]

Answer:

C

Step-by-step explanation:

This is a sample proportion where p^ represents the sample proportion.

If we have p^ = 0.6, it means about 60% of the sample are in agreement with or significant to the case study.

The case study here is 'customers that play racquetball' and p^ was 0.16.

This means that 16% of the customers of the sample said they play racquetball.

3 0
4 years ago
Today only, a suit is being sold at a 32% discount. The sale price is $323.
alukav5142 [94]

Answer:

475

Step-by-step explanation:

100%-32%=68%

323 x 100=32300/68

=475

3 0
2 years ago
Kayla has a deck that measures 4 feet by 21 feet.
Flura [38]

For the area of the deck to be doubled, he should increase each dimension by 3.

<h3>How to find the dimension increase to double the area?</h3>

The deck is 4 feet by 21 feet.

She wants to increase each dimension by equal lengths so that its area is doubled.

Therefore,

initial area = 4 × 21 = 84 ft²

Hence,

The increase by equal length

width = x + 4

length = x + 21

area = 2(84) = 168 ft²

Therefore,

(x + 4)(x + 21) = 168

x² + 21x + 4x + 84 = 168

x² + 25x + 84 = 168

x² + 25x + 84 - 168 = 0

x² + 25x - 84 = 0

(x + 28) • (x - 3)  = 0

x = -28 or 3

It can only be positive.

Therefore, she should increase each dimension by 3.

learn more on area here: brainly.com/question/23640960

#SPJ1

3 0
2 years ago
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