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3 years ago

PLS HELPPPPPPPPPPPPP

Mathematics

1 answer:

barxatty [35]3 years ago

3 0

Answer:

Step-by-step explanation:

I see three equations that represents the first step. All the others (I think) have flaws of one kind or another.

Third

The third one divides both sides of the equation by 3. All that remains on the left is what is inside the brackets. 24/3 becomes 8 which what equation 3 says.

x + 6 = 24/3

x + 6 = 8

Fourth

Shows how the distributive property is performed. It does this with great care. The right side is not affected.

3*x + 6*3 = 24 is what is the result. It is a good first step.

Five

This one is a little iffy. It is more like the second step. You have taken the fourth choice and removed the brackets. If you can do this in your head, I think it counts. I'm not sure how to answer what you should do. You're darned if you do and darned if you don't. My opinion is that it is perfectly OK but your marker may not agree.

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pshichka [43]

13.55 should be your answer

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3 years ago

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Roesha spent $8.50 every hour for 2.5. Write and simplify and expression and to determine the total amount of money she spent

Juli2301 [7.4K]

8.50 +8.50= 17.00

1/2 of 8.50 is 4.25

so 17.00+4.25= 21.25

Roesha spent $21.25

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3 years ago

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A laptop computer is purchased for $1500 after each year the resale value decreases by 25% what will the resale value be after t

Wittaler [7]

Answer:

The resale value after three years = $ 632.8125‬

Explanation:

Given the laptop purchase for $1500

Therefore, the cost price = $1500

According to the question, the resale value decreases by 25%,

Then after three years, the resale value is

Resale Value = $\text { cost Price }\left(1-\frac{r}{100}\right)^{\text {time }}$

Substituting the values,

Resale Value = $1500\left(1-\frac{25}{100}\right)^{3}$

Resale Value = $1500\times (\frac{3}{4})^3$

Resale Value = $1500\times \frac{3}{4}\times \frac{3}{4}\times \frac{3}{4}$

Resale Value = $632.8125‬

Therefore, the resale value after three years = $ 632.8125‬

3 0

3 years ago

Select the correct range of the function represented by the graph.

Brums [2.3K]

Answer:

[-1,3]

Step-by-step explanation:

5 0

3 years ago

Ann invested $61,000 into two accounts. The first account pays an annual interest rate of 5% and the second account pays an annu

sp2606 [1]

Answer:

2nd Account has $19,000

1st Account has $42,000

Step-by-step explanation:

First let's split the money invested.

x is money in account 1

y is money in account 2

1st equation

$61,000=x+y

5%=0.05

7%=0.07

2nd equation

0.05*x+0.07*y=$3,430

x=61,000-y

substitute into 2nd equation

0.05(61,000-y)+0.07y=3430

Solve.

3050-0.05y+0.07y=3430

0.02y=3430-3050

0.02y=380

y=380/0.02

y=$19,000

There are 2(two) ways to solve for the 1st account, but I will do it the long way.

y=61,000-x

substitute into 2nd equation

0.07(61,000-x)+0.05x=3430

Solve.

4270-0.07x+0.05x=3430

-0.02x=3430-4270

-0.02x=-840

x=-840/-0.02

x=$42,000

The short way...

x=61,000-y

x=61,000-19,000

x=$42,000

4 0

3 years ago