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irina [24]
3 years ago
10

Solve 8 + 3 = −13, for each step, identify the property used

Mathematics
1 answer:
Verizon [17]3 years ago
3 0

Answer:

-2

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago
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the length of a rectangular garden is 3 m greater than the width. The area of the garden is 70m squared. find the dimensions of
Lerok [7]
A = l x w

so you know that the length is 3m longer than the width, so you could use a formula to represent that

w = l + 3

you then substitute the second equation into the first to solve for l

70 = l x (l +3)
70 = l^2 + 3l

you could then rearrange the formula and solve for l using the quadratic formula 

0 = l^2 + 3l - 70

l = -3 +- (square root (3)^2 - 4(1)(70)) / 2(1)
l = -3 +- (square root 9 + 280) / 2
l = -3 +- (square root 289) / 2
l = -3 +- 17 / 2

then you solve for the two seperate roots

l = -3 + 17 /2
l = 14 / 2
l = 7

or 

l = -3 - 17 / 2
l = -20 / 2
l = -10

since a length cannot be negative, this root is not viable. therefore l = 7

to solve for w you would use

w = l + 3
w = 7 + 3
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hope this helps! if you did not understand a step or concept please let me know!
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3 years ago
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Neporo4naja [7]
We can find the value of x through a proportion. Since these two triangles are similar, their sides are in proportion.

4 is to 12 as 5 is to x
Remember to say 12, not 8! 8 is only part of the whole side. We can also simplify 4 is to 12 to 1 is to 3.

1/3 = 5/x
Cross multiply
x = 15
Hope this helps!
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A table is 3 feet and 2 inches wide, and a chair is 25 inches wide. How much wider is the table than the chair?
Harman [31]
The table is 13 inches wider than the chair.
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Answer:

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Step-by-step explanation:

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