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prohojiy [21]
2 years ago
10

Andrew is showing his work in simplifying −4.5 + 4.2 + 5.6 − 7.3. Identify any errors in his work or in his reasoning.

Mathematics
1 answer:
julia-pushkina [17]2 years ago
6 0

Answer:

  • D. Step 5

Step-by-step explanation:

Andrew made a mistake at last step.

<u>It should be:</u>

  • -11.8 + 9.8 = 9.8 - 11.8 = -2 but not -21.6
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an angle measures 58.4° more than the measure of its supplementary angle what is the measure of each angle
olga55 [171]

Answer:

58.4

119.2

Step-by-step explanation:

Givens

Let one angle = x

Let the other angle = x + 58.4

Together they make 180 degrees.

Equation

x + x + 58.4 = 180                Collect like terms.

Solution

2x + 58.4 = 180                    Subtract 58.4 from both sides

2x  = 180 - 58.4

2x = 121.6                              Divide by 2

x = 60.8

Answer

x = 60.8

x + 58.4 = 119.2                                

8 0
3 years ago
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Inessa05 [86]

Answer:

(2,16)

Step-by-step explanation:

y=-x+18

y=8x

8x=-x+18

8x+x=9x

-x+x=0

9x=18

9x/9=x

18/9=2

x=2

y=8(2)

y=16

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2 years ago
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I could use some help with this problem.
Alla [95]

Answer:

A

Step-by-step explanation:

Plug in -6 to the equation

-5 - 3(-6) > 10

Simplify for -5 + 18 = 13

13 > 10

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3 years ago
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Describe the zeros of the graphed function.
Gnesinka [82]

Answer:

A

Step-by-step explanation:

it intersects x axis at three points.

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2 years ago
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Paul is going to have the exterior of his home painted. Painting USA charges $75.00 to come out and evaluate the house plus $25.
Sladkaya [172]

Answer:

The most cost effective company will be Painting USA that charge $700 to paint Paul house .

As given

Paul is going to have the exterior of his home painted.

Painting USA charges $75.00 to come out and evaluate the house plus $25.00 per hour of labor.

If it takes 25 hours to paint Paul’s house.

Total amount charge by Painting USA = Painting USA charges for come out  and evaluate the house + Cost of per hour of labor × Total hours take to paint Paul house .

Total amount charge by Painting USA = 75 + 25 × 25

                                                               = 75 + 625

                                                               = $ 700

As given

Upscale Home Painting does not charge to evaluate the house. However, they charge $40.00 per hour.

Total amount charge by Upscale Home Painting = Cost of per hour of labor × Total hours take to paint Paul house

                                                                                = 40 × 25

                                                                                = $ 1000

Therefore  the most cost effective company will be Painting USA  that charge $700 to paint Paul house .

Step-by-step explanation:

4 0
2 years ago
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