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Karo-lina-s [1.5K]
3 years ago
6

Solve by elimination -10x+14y=10 -5x-7y=5

Mathematics
1 answer:
Ierofanga [76]3 years ago
6 0
I hope this helps you

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What is the reciprocal of −3 2/7? <br><br>a.−3 7/2 <br><br>b.−2 3/7 <br><br>c.−7 2/3 <br><br>d.3 2/7
AleksandrR [38]
D.
No explanation needed
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Christopher is going to install wallpaper on the four walls of his room. Two of the walls are 14 feet long by 9 feet high. The o
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2 of the walls are 14 ft by 9 ft....
A = L * W
A = 14 * 9 = 126 sq ft.....and since there is 2 of them...2(126) = 252 sq ft

2 of the walls are 20 ft by 9 ft
A = L * W
A = 20 * 9
A = 180 sq ft....and since there are 2 of them ..2(180) = 360 sq ft

so for all 4 walls, we have : 252 + 360 = 612 sq ft

54 * 11 = 594 sq ft...so we need 11 double rolls...which costs 11(40) = $ 440
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so we have 612 sq ft to cover....11 double rolls cover 594 sq ft and cost 440...and 1 single roll which covers 18 sq ft and cost 20
for a total cost of : $ 460 <==




8 0
4 years ago
I need help with finding x. Can someone help me please?
11Alexandr11 [23.1K]

Answer:

x=25

Step-by-step explanation:

these angles are of the same measure, so i set the two values equal to eachother. it looks like

75=(4x-25)

and solve for x

I HOPE THIS IS RIGHT!! have a great day

3 0
3 years ago
What is the value of 8.3 X 10 ? A. eight hundred thousand, thirty B. eighty-three thousand C. eight thousand, three hundred D. e
morpeh [17]

Answer:

The answer would be 83,000 or letter c becasue 10 times that number 4 times is 10,000 than x8.3 is 83,000

Step-by-step explanation:

7 0
3 years ago
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Y &gt; -x + 2<br>y &lt; 3x - 2<br>Which graph represents the system of inequalities?<br>​
SashulF [63]

Answer:

C

Step-by-step explanation:

When an equality has a ≤, or ≥ sign (greater than/less than or equal to), the line will be solid. When an equality has a <, or > sign(greater than/less than), the lines will be dotted. As we can see, both of the inequalities given have <, or >, meaning they must both have dotted lines. Since one of the lines in D is solid, the correct answer is C.

3 0
4 years ago
Read 2 more answers
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