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Bad White [126]

3 years ago

9

Help Me With Math Guys REALLY NEED HELP

1 answer:

ad-work [718]3 years ago

6 0

The question is ambiguous.

A is right if the second hour is in terms of the original amount (16 grams). That is not how it should be done, but there is nothing in the problem restricting us from doing it that way.

B is right the way most people would do the problem. I would say you should accept this as the right answer. The 4.5% is taken away from what was left after the first hour. I would do it that way left to my own devices.

C. The % conversions are not correct. Those conversions are 35% and 45%
C is not even in contention for being right.

D Same problem as C

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The sum of two numbers is 18. 5 times the first number subtracted from 4/7 of the second number is 14. Find the number.

Sergeu [11.5K]

Answer:

The sum of two numbers is 18.

5 times the first number subtracted from 4/7 of the second number is 14.

First number --> x

Second number --> y

so

x + y = 18 --> x = 18-y

5x - (4/7)y = 14

so

5 (18-y) - (4/7)y = 14

90 - 5y - 4/7 y = 14

-5.57 y = 14-90

y = 13.64

so

x = 18 - 13.64

x = 4.36

8 0

3 years ago

The price of a computer component is decreasing at a rate of 15% per year. State whether this decrease is linear or exponential

Margaret [11]

Answer:

Since the price is given by an exponential function, the decline in price is exponential.

The component will cost $36.8475 in three years.

Step-by-step explanation:

The equation for the price of a component has the following format:

$P(t) = P(0)(1-r)^{t}$

In which P(t) is the price after t years, P(0) is the initial price, and r is the rate that the price decreases.

Since the price is given by an exponential function, the decline in price is exponential.

The price of a computer component is decreasing at a rate of 15% per year.

This means that $r = 0.15$

Component costs $60 today

So P(0) = 60. Then

$P(t) = P(0)(1-r)^{t}$

$P(t) = 60(1-0.15)^{t}$

$P(t) = 60(0.85)^{t}$

What will it cost in three years?

This is P(3).

$P(t) = 60(0.85)^{t}$

$P(3) = 60(0.85)^{3} = 36.8475$

The component will cost $36.8475 in three years.

6 0

3 years ago

zzz [600]

Answer:1 computer : 8 students

Step-by-step explanation:

if there are 9 computers it would originally be 9 : 72 but that can be reduced since 9 is a factor of 72.

8 0

3 years ago

Read 2 more answers

Dominic's water jug holds 1.25 quarts. Terrell says he can find the capacity of the jug in fluid ounces by dividing 1.25 by 32.

maks197457 [2]

Yes,because there are 32 fl oz in a quart, so Terrell is correct.

7 0

3 years ago

Read 2 more answers

What is the value of the expression |-7| + |-42

RUDIKE [14]

Answer: it is in absolute value form, so when you take it out the signs would change to 7 + 42 = 49

Step-by-step explanation:

3 0

3 years ago