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Luda [366]
2 years ago
10

Please help me I'm failing and I'm so confused!!!!!!!

Mathematics
2 answers:
Inessa [10]2 years ago
8 0

Answer:

<u><em>x=26</em></u>

<u><em>y=9</em></u>

Step-by-step explanation:

(5x-17)+(3x-11)=180

8x-28=180

8x=208

<u><em>x=26</em></u>

(2y+5)+90[the right angle]+(3x-11)=180

2y+95+3(26)-11=180

2y+84+78=180

2y+162=180

2y=18

<u><em>y=9</em></u>

stiv31 [10]2 years ago
4 0

Answer:

y=9

x=26

Step-by-step explanation:

5x-17+3x-11=180

8x-28=180

8x=208

x=26

5(26)-17

130-17

113

2y+5+90=113

2y+95=113

2y=18

y=9

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Step-by-step explanation:

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What are the coordinates of the vertex of the parabola with the equation y = x + 2x - 3?
loris [4]

Answer:

<em>The coordinates of the vertex are (-1,-4).</em>

Step-by-step explanation:

<u>Equation of the Quadratic Function </u>

The vertex form of the quadratic function has the following equation:

y-k=a(x-h)^2

Where (h, k) is the vertex of the parabola that results when plotting the function, and a is a coefficient different from zero.

We are given the function:

y=x^2+2x-3

We must transform the equation above by completing squares:

The first two terms can be completed to be the square of a binomial. Recall the identity:

x^2+2xy+y^2=(x+y)^2

Thus if we add and subtract 1:

y=(x^2+2x+1)-3-1

Operating:

y=(x^2+2x+1)-4

The trinomial in parentheses is a perfect square:

y=(x+1)^2-4

Adding 4:

y+4=(x+1)^2

Comparing with the vertex form of the quadratic function, we have the vertex (-1,-4).

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4 0
2 years ago
A tabletop in the shape of a trapezoid has an area of 5,658 square centimeters. Its longer base measures 119 centimeters, and th
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The formula for finding the area of a trapezoid is: sum of bases*height*1/2
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Check:
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3 0
3 years ago
How would I simplify this?<br> 8/13 ln 3 = ln h/12
Greeley [361]

Answer:

Step-by-step explanation:

I'll assume that you meant

(8/13) ln 3 = ln h/12

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(8/13) ln 3 = ln h - ln 12

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Then (8/13) ln 3 + ln 3 = ln h - ln 4, or

(21/13) ln 3 + ln 4 = ln h  

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8 0
2 years ago
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