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Alisiya [41]
2 years ago
6

PARALLEL LINES Find x and y. ​

Mathematics
2 answers:
Bess [88]2 years ago
7 0
Answer:

x = -25
y = -13.33


Step-by-step explanation

To find x
(130 - 2x)° + 4x° = 180°
130 - 2x + 4x = 180
130 - 2x = 180
130 - 180 = 2x
x = -50 ÷ 2
x = -25 answer

To find y
(130 - 2x)° + (3y + 40)° = 180°
130 - 2x + 3y + 40 = 180
170 - 2x + 3y = 180
By putting the vaue of x in the equation
170 - 2(-25) + 3y = 180
170 + 50 + 3y = 180
3y = 180 - 170 - 50
y = -40 ÷ 3
y = -13.33 answer

Hope that helps...
Georgia [21]2 years ago
3 0
4x = (130 - 2x) so x = 65/3

(3y + 40) + (130 -2x) = 180 because the angles are supplementary

plug in x

3y + 40 + 130 - 2(65/3) = 180

so 3y = 95/3

therefore y = 95/6
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Find the slope of the line that passes through the points (-1, 1) and (2, 7).
Kruka [31]

Answer:

2 is your slope

Step-by-step explanation:

Find the slope. Use the slope-formula:

<em>m</em> (slope) = (y₂ - y₁)/(x₂ - x₁)

Let:

(x₁ , y₁) = (-1 , 1)

(x₂ , y₂) = (2 , 7)

Plug in the corresponding numbers to the corresponding variables:

<em>m </em>= (7 - 1)/(2 - (-1))

Simplify:

<em>m</em> = (6)/(2 + 1)

<em>m</em> = 6/3

<em>m </em>= 2

2 is your slope (or <em>rise</em> 2, <em>run </em>1).

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3 years ago
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Marie has a recipe that calla for 2 1/4 cups of flour for 3 dozen cookies. How much would show needs to make 60 cookies
Masja [62]

Answer:

3 3/4 cups flour

Step-by-step explanation:

If Marie needs 2.25 cups of flour for 36 dozen cookies, then our equations would be:

2.25f = 36

f         = 16

3.75f  = 60

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2 years ago
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What does the y-intercept mean in terms of the graph? Select all that apply.
mote1985 [20]
Hello there!

Your answer would have to be C. where the function crosses the y-axis

Hope This Helps!
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3 years ago
Look at the figure below: A circle is shown with the center O.OX is a segment joining center O to a point X on the circle. YZ is
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Segment OX will be the radius.
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3 years ago
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What are the approximate values of the minimum and maximum points of f(x) = x5 − 10x3 + 9x on [-3,3]? A. maximum point: (–2.4, 3
slava [35]

Answer:

(-2.4, 37.014)

Step-by-step explanation:

We are not told how to approach this problem.  

One way would be to graph f(x) = x^5 − 10x^3 + 9x on [-3,3] and then to estimate the max and min of this function on this interval visually.  A good graph done on a graphing calculator would be sufficient info for this estimation.  My graph, on my TI83 calculator, shows that the relative minimum value of f(x) on this interval is between x=2 and x=3 and is approx. -37; the relative maximum value is between x= -3 and x = -2 and is approx. +37.  

Thus, we choose Answer A as closest approx. values of the min and max points on [-3,3].  In Answer A, the max is at (-2.4, 37.014) and the min at (2.4, -37.014.

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