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3 years ago

Add -4 + 2/3 . A) -52/3 B) -42/3 C) -32/3 D) -31/3

1 answer:

3 0

We suspect that spaces are missing in your answer selections.

If D is supposed to be -3 1/3, that choice is the correct one.

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As written, none of the answer choices are correct.

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A necklace found at a pawn shop is 192 grams and has a volume of 19.5 cubic centimetres. What metal is the necklace made of?

Sophie [7]

Answer:

we divide 192 by the volume 19.5

192÷19.5=9.85 so the necklace is made of bronze

8 0

3 years ago

Rich is comparing the cost of maintaing his car with the depreciating value of the car. When will the cost and value be the same

goldfiish [28.3K]

Complete question:

Rich is comparing the cost of maintaining his car with the depreciation value of the car.

The value starts at $20,000 and decreases by 15% each year. The maintanance cost is $500 the first year and increases by 28% per year.

When will the maintenance cost and the value be the same.

Answer:

9 years

Step-by-step explanation:

Depreciation is modeled by an exponential function :

A = p(1 - r)^t [decrease, '-']

A = 20,000(1 - 0.15)^t

A = 20000(0.85)^t - - - (1)

Maintainace cost :

A = p(1 + r)^t ; [increase, '+']

A = 500(1 + 0.28)^t

A = 500(1.28)^t - - - (2)

Equating (1) and 2

20000(0.85)^t = 500(1.28)^t

1.28^t / 0.85^t = 20000/500

(1.28 / 0.85)^t = 40

Take log of both sides

Log (1.28 / 0.85)^t = log 40

t * 0.1777910 = 1.6020599

t = 1.6020599 / 0.1777910

t = 9.01

t = 9 years

8 0

3 years ago

Which number is a factor of 14 but not a multiple of 2

GalinKa [24]

A factor of 14 is 7, and it isnt a multiple of 2.

7 x 2 = 14

6 0

3 years ago

Read 2 more answers

X^2+y^2=130 and 5x+y=26 solve this simultaneous equation

zhuklara [117]

Hello, I'm from Indonesia. I hope that answer your question.

8 0

3 years ago

3x^2+17x-9/x+4 what is the quotient

zvonat [6]

Answer:

The quotient of given expression is (3x+5).

Step-by-step explanation:

The given expression is

$\frac{3x^2+17x-9}{x+4}$

The coefficients of dividend are 3,17 and -9.

Use synthetic division to divide $3x^2+17x-9$ and $x+4$ .

The bottom row represents the coefficient of quotient and remainder.

The given expression can be written as

$\frac{3x^2+17x-9}{x+4}=3x+5-\frac{29}{x+4}$

Therefore the quotient of given expression is (3x+5).

5 0

3 years ago