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8_murik_8 [283]
3 years ago
7

Solving a system of linear equations algebraically:

Mathematics
1 answer:
guajiro [1.7K]3 years ago
8 0

It was so easy xD

its x=1

y=12×1+7

y=-6×1+25

=19

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(1 point) Mike and Lisa are brother and sister. Mike has as many brothers as sisters, and Lisa has three times as many brothers
Elza [17]

Answer:

Step-by-step explanation:

Given that Mike and Lisa are brother and sister.  Mike has as many brothers as sisters, and Lisa has three times as many brothers as sisters

i.e. If Mike has x sisters, then he has x brothers.

i.e. no of sons in total = x+1 (including Mike)

No of daughters = x

Lisa's brothers = x+1 and and Lisa sisters = x-1 (exclusing Lisa)

Given that

x+1 =3(x-1)\\2x =4\\x=2

Hence we find that there are 3 sons and two daughters in the family.

3 0
4 years ago
Help picture below problem 10
DedPeter [7]

<u>Solution</u><u> </u><u>:</u><u>-</u>

Here, we have been given that lines f and g are parallel. Thus, the angle measuring 135° and ∠2 are vertically opposite angles.

And we know that vertically opposite angles measure same. Thus,

∠2 = 135°

And,

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135° + ∠6 = 180°

∠6 = 180° - 135°

∠6 = 45°

Hope that helps :)

4 0
3 years ago
Can someone help with this please??​
adoni [48]

Answer:

doesn't x equal 6 too?

Step-by-step explanation:

since x is the same size as the other side of the triangle

8 0
4 years ago
Simplify the expression.<br>-7/9-5-10​
sergij07 [2.7K]

Answer:

-142/9

Step-by-step explanation:

-\frac{7}{9}-5-10\\\\-\frac{7}{9}-15\\\\ -15=-\frac{15*9}{9}=- \frac{135}{9}\\\\-\frac{7}{9}- \frac{135}{9}=\frac{-7-135}{9}=-\frac{142}{9}

6 0
4 years ago
5x - x +8= 48<br> x=<br> How do you solve this
Artemon [7]

Answer:

x=2/11 hope is right

Step-by-step explanation:

8 0
3 years ago
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