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e-lub [12.9K]
2 years ago
8

-7=blank-(-2) need help pleace

Mathematics
2 answers:
borishaifa [10]2 years ago
7 0

Answer:

-7 = -9 - (-2)

Step-by-step explanation:

Nuetrik [128]2 years ago
7 0

Answer:

-9

Step-by-step explanation:

-9 -(-2) = -9 + 2 = -7

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8.4.9 On or off the line & Practice Problems
Andrews [41]

Answer:

Number of quarters → 15

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Step-by-step explanation:

Let the number of dimes I have = y

And number of quarters = x

Since, I have amount in my pocket = $2

Therefore, 0.10y + 0.25x = 2

100(0.10y + 0.25x) = 100×2

25x + 10y = 200

5x + 2y = 40

2y = -5x + 40

y = -2.5x + 20 ---------(1)

Total number of coins in my pocket = 17

x + y = 17

y = -x + 17 ---------(2)  

By using a graphing calculator we can graph these two lines (As attached)

Solution of the given system of equations will be the point of intersection of these lines.

Solution → (2, 15)

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4 0
3 years ago
How many lines of symmetry does the figure have? I think it's 6, but I could be wrong
Gnesinka [82]

Answer: You are right it is 6


Step-by-step Explanation

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3 0
3 years ago
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artcher [175]

Answer:

L.H.S.

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6 0
2 years ago
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Eddi Din [679]

Answer:

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