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Alexandra [31]
3 years ago
5

Instructions

Mathematics
1 answer:
VladimirAG [237]3 years ago
5 0
Where is the picture?
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Solve 2x – 7 > 11.
BaLLatris [955]

Answer:

x > 9

Step-by-step explanation:

2x - 7 > 11

2x > 18

x > 9

5 0
3 years ago
As a first step in solving the system shown, Yumiko multiplies both sides of the equation 2x – 3y = 12 by 6. By what factor shou
GenaCL600 [577]

Answer:

Yumiko should multiply the other equation by 3.

If she adds the two equations she would be left with the variable 'x'.

Step-by-step explanation:

Given the two equations are as follows:

$ 2x - 3y = 12 \hspace{5mm} \hdots (1) $

$ 5x + 6y = 18 \hspace{5mm} \hdots (2) $

It is given that she multiplies the first equation by 6. Therefore, (1) becomes

$ 12x - 18y = 72 \hspace{15mm} \hdots (a) $

Now, note that the sign of the variable 'y' is negative. So, if we make the co-effecient of 'y' equal in both the cases, add them it would result in the elimination of the variable 'y'.

The co-effecient of y in Equation (2) is 6. To make it 18 like it is in Equation (1), we multiply throughout by 3.

Therefore, Equation (2) becomes:

$ 15x + 18y = 54 \hspace{5mm} \hdots (b) $

Now, we add Equation (a) and Equation (b).

$ \implies 12x - 18y + 15x + 18y = 72 + 54 $

$ \implies 27x = 126 $

Factor: 3

Equation: 27x = 126

7 0
2 years ago
Please help with this
DIA [1.3K]
Sorry i cant see the picture so well
5 0
2 years ago
Read 2 more answers
X^2 + 14 =78 +yx y = 25 Solve for x and graph if u can thanks
Dovator [93]

Answer:

4 x + 4 y = 1  ,  6 x − y = 1 2 x + y = − 2  ,   x + 2 y = 2   x + 2 y = 4  ,  x − y = − 3

Hoped I helped

3 0
2 years ago
A. -10+(+10)<br> b.-13+(-13)<br> c. -11 + 0
DochEvi [55]
A is 0
B is-26
C is -11
5 0
3 years ago
Read 2 more answers
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