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lara31 [8.8K]
3 years ago
12

What is the answer to this equation -20 +(-9)

Mathematics
2 answers:
Mkey [24]3 years ago
6 0

Answer:

-29 I'm pretty sure.

Step-by-step explanation:

-20 - 9 = 29

ANTONII [103]3 years ago
3 0

Answer:

-29

Step-by-step explanation:

they are both negative so u add them.

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Mr. murphy has a old coin that has 10 side.if a shape is a polygon,how many angle do it have
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A polygon has the same number of angles as sides. This means that if a polygon has 4 sides, it has 4 angles. In this particular problem, because the shape has 10 sides, it also has 10 angles
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The height of a triangle is 5 m less than its base. The area of the triangle is 42 m².
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A = (1/2) b * h
h = b - 5
42 = (1/2) * b * (b - 5)
42 = (1/2) * b^2 - 5b
multiply both sides by 2 to clear the fraction (1/2)
2(42) = 2(1/2) *b^2 - 5b
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Since this is a quadratic equation, subtract 84 from both sides so that it is set = to zero.
b^2 - 5b - 84 = 0
Now factor.
(b - 12)(b + 5) = 0
b - 12 = 0; b = 12
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You can't have a negative length so the answer is 12m
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4 0
3 years ago
. Trisha walked
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Answer:

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Which values have exactly 2 significant figures? Check all that apply.
JulijaS [17]

ANSWER

Options B, C and D have exactly 2 significant figures.


<u>EXPLANATION</u>

To see whether the numbers have exactly 2 significant figures, round all to 2 significant figures. The ones that remains the same have exactly 2 significant figures.


302\approx 300yards to 2.s.f

980\approx 980gallons to 2.s.f

1200\approx 1200feet to 2.s.f

84\approx 84litters to 2.s.f\

6,040\approx 6,000meters to 2.s.f







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I don’t get none of this work so help me please
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yeah. I can't see none of you work so help ME please.

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