2 years ago

Given: angle 2 and angle 4 are vertical angles Prove: angle 2 congreunt angle 4

Mathematics

1 answer:

7nadin3 [17]2 years ago

7 0

Answer:

Step-by-step explanation:

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PLEASE HELP 5. If t= -3, then 3t^2 +5t +6 equals A. -36 B. -6 c. 6 D. 18

Nataliya [291]

Answer:

Step-by-step explanation:

substitute t=-3 in the equation

3(-3) squared +5(-3)+6=18

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3 years ago

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Which is a graph of y=-1/2x- 2?

cricket20 [7]

Answer:

the first one

y-intercept (0,-2)

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2 years ago

Solve each system of equations by writing a new system that eliminates one of the variables.

Rufina [12.5K]

Answer:

$x=33\\y=-41$

Step-by-step explanation:

Let:

$2x+y=25\hspace{5}(1)\\and\\4x+3y=9\hspace{5}(2)$

We need to eliminate one of the variables, so let's use elimination method. First multiply (1) by 2

$2*(1)\equiv\hspace{5}4x+2y=50$

Now subtract (2) from 2*(1) in order to eliminate x:

$2*(1)-(2)\\4x-4x+2y-3y=50-9\\-y=41$

Solving for y:

Multiplying both sides by -1

$y=-41$

Finally, replacing the value of y in (1)

$2x-41=25$

Solving for x:

add 41 to both sides:

$2x=66$

Multiply both sides by 1/2:

$x=\frac{66}{2} =33$

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2 years ago

12r-5 61° R A) 790 C) 140° B) 70° D) 970

Yanka [14]

Answer:

79 because x = 7 so 12 x7 - 5 =79

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2 years ago

1 point

valentina_108 [34]

Answer:

Step-by-step explanation:

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