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8090 [49]
2 years ago
14

-7x-2y = -13 x – 2y = 11

Mathematics
1 answer:
castortr0y [4]2 years ago
4 0
-7x -2y= -13
-x + 2y= -11
-8x=-24
x=3

(3) - 2y= 11
-2y= 8
y= -4

(3,-4)
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A bicycle was originally sold for $400 was on sale for $320. what percent was the bike marked down?
Eva8 [605]
100% of the price = $400
x % of the price = $320
we need to find x

using a proportion
100 : 400 = x : 320
100 * 320 = 400 * x
32000 = 400x
x = 32000 / 400
x = 80

That means the new price is 80% of the previous price.
100% - 80% = 20%
and based on this we can make a conclusion that the discount was 20%

I hope it is clear to you, feel free to ask anything about it :)

6 0
3 years ago
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Find the value of the power.<br> 3 exponent 5
ziro4ka [17]

Answer:

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Step-by-step explanation:

3*3*3*3*3=243

8 0
3 years ago
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Choose all answers that apply:<br> a - -1.5 &lt; x &lt; -0.5<br> b- 0 c- 3.5 d- none of the above
Darya [45]

Answer:

None of the above.

Step-by-step explanation:

The interval where h is increasing is -1.5 < x < 1.5. Answers a, b, and c do not match.

3 0
2 years ago
Sally identified the terms of the expression 9a + 4b - 18 as 9, 4, and 18. Explain her error.
nordsb [41]

A term is a single mathematical expression. It may be a single number (positive or negative), a single variable (a letter), several variables multiplied but never added or subtracted. Some terms contain variables with a number in front of them. The number in front of a term is called a coefficient.

So the terms are 9a, 4b, and 18.

hope it helps!

3 0
3 years ago
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Can someone help me with this problem? Its due today plz i need help! I will give brainlist if it is right!
d1i1m1o1n [39]

Answer:

A (-4,0), B (0,3) and C (-6,5)

Step-by-step explanation:

The coordinates for A are (-4,-3) B (0,0) and C (-6,2)

From there just add 3 to all theY values

The coordinates of the translated triangle would be A (-4,0), B (0,3) and C (-6,5)

Hope that helps!

7 0
3 years ago
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