−3(y+5)=15
Answer:
y = -10
Step-by-step explanation:
−3(y+5)=15
Divide each side by -3
−3/-3(y+5)=15/-3
y+5 = -5
Subtract 5 from each side
y+5-5 = -5-5
y = -10
8x + 4y = 156
Answer:
[12, 15]
Step-by-step explanation:
{6x + 5y = 147
{8x + 4y = 156
-¾[8x + 4y = 156]
{6x + 5y = 147
{-6x-3y=-117← New Equation
________________
2y = 30
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22
y = 15 [Plug this back into both equations to get the x-coordinate of 12]; 12 = x
So, using the Elimination Method, what I did here was took the bottom equation and multiplied it by -¾, turning 8x to -6x, canceling out all x-terms.It does not matter which variable you choose to eliminate, as long as you know what you are doing.
I am joyous to assist you anytime.
t N.
In the figure shown below
Answer:
A horizontal line segment M K intersects with line segment J L at their midpoint N.
∠J N M =(5x+2)°
∠ LN M=3( x+ 14)°
So, ∠J N M + ∠ LN M =180°[ These two angles form linear pair.Angles forming linear pair are supplementary.]
⇒5 x+ 2+ 3 (x+ 14) =180 [ By Substitution]
⇒ 5 x+2 +3 x+42°= 180°
⇒ 8 x=180°-44°
⇒8 x= 136°
⇒x= 136°÷8
⇒x=17°
So, ∠J N M =5×17 +2=87°
∠ LN M= 3×(17 +14)=3×31=93
∠J N M =∠K N L [Vertically opposite angles]
∠K N L=87°
Answer:
The measure of
Step-by-step explanation:
According to the below diagram, horizontal line segment intersects with at their midpoint .
So, (As they are vertical angles)
Given that, and
As they are adjacent angles and points and are co-linear, so
That means.......
Thus,
There are not enough people in the sample.
B.
People who shop in bookstores are likely to read more books than those who do not.
C.
It is unlikely that people who shop in bookstores are interested in surveys.
D.
The surveyor did not sample the entire population at the mall.
Answer:
People who shop in bookstores are likely to read more books than those who do not.
Step-by-step explanation: I took the quiz