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zmey [24]
3 years ago
15

Perform the indicated operation. Show all necessary work. a -2-(-9) b -2 -9 c -2- (-9)-(-2

Mathematics
2 answers:
aksik [14]3 years ago
7 0

Answer:

a=7 b=11 c=9

Step-by-step explanation:

-2-(9)      -2-(9) = -2+9=7 b -2-9=-11 c -2-(-9)-(-2) = -2+9+2=9

Ad libitum [116K]3 years ago
3 0

Answer:

Is the other answer correct?

Step-by-step explanation:

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Which algebraic expression is equivalent to the expression below? 4(5 + 8r) + 19
mr_godi [17]

Answer:

32r + 39

Step-by-step explanation:

<u>Step 1:  Distribute</u>

4(5 + 8r) + 19

<em>20 + 32r + 19</em>

<em />

<u>Step 2:  Combine like terms</u>

<em>32r + 39</em>

<em />

Answer:  32r + 39

7 0
3 years ago
Read 2 more answers
Hodel just got her driver's license. Her parents offer her two options. 1. They'll buy her a used car that will cost her $0.50 p
Romashka-Z-Leto [24]

Answer:

The second option will cost her less than the first one.

Step-by-step explanation:

In order to solve this problem we will create two functions to represent the cost of the car in function of the miles drove by her.

For the first option we have:

cost_1(x) = 0.5*x

For the second option we have:

cost_2(x) = 5000 + 0.1*x

Since she intends to drive it for 10,000 miles per year for 6 years, then the total mileage she intends to drive her car is 60,000 miles. Applying this to the formula of each car and we have:

cost_1(60000) = 0.5*60000 = 30000

cost_2(60000) = 5000 + 60000*0.1 = 11000

The second option will cost her less than the first one.

7 0
3 years ago
5. Two vertices of a rectangle are (8,-5) and (8,7). If the area of the rectangle is 72 square units, name the possible location
Phantasy [73]

Answer:

<h3>#5</h3>

<u>Given vertices:</u>

  • (8, -5) and (8, 7)

These have same x-coordinate, so when connected form a vertical segment.

<u>The length of the segment is:</u>

  • 7 - (-5) = 12 units

The area of the rectangle is 72 square units, so the horizontal segment has the length of:

  • 72/12 = 6 units

<u>Possible location of the remaining vertices (to the left from the given):</u>

  • (8 - 6, -5) = (2, -5)

and

  • (8 - 6, 7) = (2, 7)
<h3>#6</h3>

<u>Similarly to previous exercise:</u>

  • (5, -8) and (5, 4) given with the area of 48 square units

<u>The distance between the given vertices:</u>

  • 4 - (-8) = 12 units

<u>The other side length is:</u>

  • 48/12 = 4 units

<u>Possible location of the other vertices (to the right from the given):</u>

  • (5 + 4, -8) = (9, -8)

and

  • (5 + 4, 4) = (9, 4)
4 0
3 years ago
Kerry is collecting money for school. Her goal is to get $200. She has collected $15 each from 12 people so far. How much more m
8090 [49]

Answer:

20 dollars

Step-by-step explanation:

15 dollars times 12 people to see how much money she got/has right now is 180 dollars

then take 200-180 to get <u>20</u>

5 0
3 years ago
Which describes the slope of the given line? <br> zero<br> undefined<br> positive <br> negative
Delvig [45]
The answer is negative
8 0
3 years ago
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