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erica [24]
3 years ago
5

A. the electric clothes dryer you are interested in buying costs $300 with tax. it uses $0.50 of electricity for one hour of dry

ing. what is the rate of electric use
Mathematics
1 answer:
dalvyx [7]3 years ago
4 0
0.5$/hr ... Ans...//
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50 POINTS ANSWER QUICK
Andreyy89

Answer:

part a= -1

part b= -4

Step-by-step explanation:

f(x) is y. plug in -4 for y and check x

6 0
3 years ago
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A swimming pool is to be drained. The pool is shaped like a rectangular prism with length 30 feet, wide 18 ft, and depth 4ft. Su
Gala2k [10]

Answer: it will take 9 hours to empty the pool.

Step-by-step explanation:

The pool is shaped like a rectangular prism with length 30 feet, wide 18 ft, and depth 4ft. It means that when the pool is full, its volume is

30 × 18 × 4 = 2160 ft³

If water is pumped out of the pool at a rate of 216ft3 per hour, then the rate at which the water in the pool is decreasing is in arithmetic progression. The formula for determining the nth term of an arithmetic sequence is expressed as

Tn = a + d(n - 1)

Where

a represents the first term of the sequence(initial amount of water in the pool when completely full).

d represents the common difference(rate at which it is being pumped out)

n represents the number of terms(hours) in the sequence.

From the information given,

a = 2160 degrees

d = - 216 ft3

Tn = 0(the final volume would be zero)

We want to determine the number of terms(hours) for which Tn would be zero. Therefore,

0 = 2160 - 216 (n - 1)

2160 = 216(n - 1) = 216n + 216

216n = 2160 - 216

216n = 1944

n = 1944/216

n = 9

8 0
3 years ago
Evaluate: 542 × 31
ryzh [129]

Answer:

<h2>C. 16,802</h2>

Step-by-step explanation:

h h h h h h h h h h

5 0
3 years ago
Hurry please...
Eva8 [605]

Answer:

initial value=2

rate of change=1

Step-by-step explanation:

rate of change=(3-2)/(1-0)=1

7 0
3 years ago
HELP MEE PLEASE HELP
SOVA2 [1]

Answer:

42.75

Step-by-step explanation:

area of one piece, length x width:    3 x 4 3/4

                                                                14.25

area of 3 pieces:   14.25(3)= 42.75

8 0
2 years ago
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