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Kamila [148]
3 years ago
12

Write the original equation of -18x-15= -87

Mathematics
2 answers:
Sunny_sXe [5.5K]3 years ago
8 0

Answer:

x=4

Step-by-step explanation:

-18 x 4 x -15 = -87

jeka943 years ago
3 0

Answer:

-18x-15=-87

-(18x+15)=-(87)

18x+15=87

18x=87-15

18x=72

x=4

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Kate purchased a car for $23,000. It will depreciate by a rate of 12% a year. What is the value of the car in 4 years. *
Ivan

Answer:

$13,793

Step-by-step explanation:

Kate purchased a car for $23,000. It will depreciate by a rate of 12% a year. What is the value of the car in 4 years. *

The formula for Depreciation rate =

y = a(1 - r) ^t

Where

y = Value of the car after t years

a = Initial value of the car = $23,000

t= time in years = 4 years

r = Depreciation rate = 12% = 0.12)

y = $23000 (1 - 0.12)⁴

y = $13792.99328

Approximately = $13,793:

3 0
3 years ago
-43 - 4r = 3( 1 - 9r )
Karolina [17]

-43 - 4r = 3 - 27r

Add 27r to both sides. -43 - 4r + 27r = 3 -27r + 27r or -43 + 23r = 3

Add 43 to both sides. -43 + 43 +23r = 3 + 43 or 23r = 46.

Divide both sides by 23 to get r by itself. 23r / 23 = 46 / 23 or r = 2

r = 2

6 0
3 years ago
Read 2 more answers
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Vlad [161]

Answer: a) about 450

Step-by-step explanation:

50 multiplied by 9 is 450 and its asking for an approximate so it would be anything near 450

3 0
3 years ago
Find the value of x in the diagram below.
dsp73

Answer:

x = 31

Step-by-step explanation:

The 2 sides are congruent, meaning the 2 angles are equal so:

47 = x + 16

subtract 16 from both sides

31 = x

5 0
2 years ago
Find the volume of cylinder shaped cup. Use 3.14 for pi. Round your answer
IRINA_888 [86]
Volume = pi * radius^2 * height

= 3.14 * 5^2 * 13

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5 0
3 years ago
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