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3 years ago

HELP ME PLEASEEE!!!!!!! I am stuck

Mathematics

1 answer:

NISA [10]3 years ago

8 0

Answer:

X = 62

Step-by-step explanation:

The inside of a triangle is always equal to 180º therefore, you need to add everything up to equal 180. It should look like

(x + 1) + 55 + x = 180

Now you just solve.

Since there are 2 x's you can combine the like terms making them equal 2x

Now the equation should look like 2x + 1 + 55 = 180

Simplify the other like terms: 2x + 56 = 180

Now you want to get x by itself so you subtract 56 from both sides:

2x + 56 = 180

-56 -56

------------------------

2x = 124

Now to finish getting x by itself, divide both sides by 2.

2x = 124

----- ------

2 2

x = 62

FINALLY you plug in x to see if it worked.

(62 + 1) + 55 + 62 = 180

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3 years ago

Write an equation of the line that passes through the given point and is parallel to the graph of the given equation.

True [87]

Question 1:

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Find Slope
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Equation: y = 5x - 2
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Insert slope into the general equation y = mx + c
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Insert y-intercept into the equation
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Answer: y = 5x - 11
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Question 2:

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y = 9x
Slope = 9
Slope of the parallel line = 9

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Insert slope into the equation y = mx + c
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y = 9x + c

--------------------------------------------------------------------
Find y-intercept
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y = 9x + c
At point (0, 5)
5 = 9(0) + c
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Insert y-intercept into the equation
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y = 9x + c
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7 0

3 years ago

Find the first term and common ratio for the geometric sequence a2 =2.5,a4=62.5

fenix001 [56]

Answer:

a1 = 0.5; common ratio = 5

Step-by-step explanation:

Let the common ratio = r

a2 = 2.5

a3 = 2.5r

a4 = 2.5r * r = 2.5r^2

We are told a4 = 62.5, so

2.5r^2 = 62.5

Divide both sides by 2.5

r^2 = 25

r = 5

a2 = a1 * r

a1 = a2/r = 2.5/5 = 0.5

Answer: a1 = 0.5; common ratio = 5

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nikdorinn [45]

Answer:

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