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Agata [3.3K]
3 years ago
13

Solve the following system of equations by linear combination:

Mathematics
1 answer:
Sholpan [36]3 years ago
3 0
3d - e =7
d  + e = 5
-------------
4d  /  = 12
d=12:4
d=3

3+e=5
e=5-3
e=2
the solution is (3,2)
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Please help ASAP thank you
Eduardwww [97]

Answer:

R= 1 1/12 or 13/12 I think that's the simplest form

5 0
3 years ago
Read 2 more answers
3)
Tju [1.3M]

Answer:

A

Step-by-step explanation:

\boxed{slope =  \frac{y1 - y2}{x1 - x2} }

☆ (x₁, y₁) is the 1st coordinate and (x₂, y₂) is the 2nd coordinate

Thus, using the above formula,

slope =  \frac{2 - ( - 1)}{5 - ( - 3)}

slope =  \frac{2 + 1}{5 + 3}

slope =  \frac{3}{8}

3 0
3 years ago
How does doubling the lengths of the sides of a rectangle to form a similar rectangle affect the area
MrRissso [65]

Doubling the lengths of the sides of a rectangle quadruple the area

<h3>How to determine the effect?</h3>

Let the dimension of the rectangle be L and W.

So, the area is

A = LW

When the lengths are doubled, we have:

A2 = 2L * 2W

This gives

A2 = 4LW

This means that the initial area is multiplied by 4

Hence, doubling the lengths of the sides of a rectangle quadruple the area

Read more about similar shapes at:

brainly.com/question/14285697

#SPJ1

6 0
2 years ago
What is the range of f(x) = 3x+9
jeka94
The range is the y values that can be gotten from inserting the domain
we will assume the domain to be all real numbers

when x approahces infinity, y approaches inifnity
when x approaches negative inifnity, y appraoches negative infinity

no holes
range is all real numbers
5 0
4 years ago
2x2<br> 4x4<br> 5x5<br> 6x7<br> 5x6<br> 8x4<br> 9x10<br> 11x2<br> 9x3
Serhud [2]
2x2=4
4x4=8
5x5=10
6x7=42
8x4=32
9x10=90
11x2=22
9x3=27
5 0
3 years ago
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