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abruzzese [7]
3 years ago
13

Need help! I suck at math , plzzz

Mathematics
1 answer:
jonny [76]3 years ago
7 0
3.angleB is congruent to angle F
4. The slope is -3 and the yintercept is 4
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If 5x-8=7, what is the value of 5x+8 ( EXPLAINING NEEDED)
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Answer:

5x+8=23

Step-by-step explanation:

we have

5x-8=7

Adds 16 both sides

5x-8+16=7+16

5x+8=23

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Calculate the area of a circle with a diameter of 0, 8m​
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50.24=4squared times pie

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Find the equation of a line through (0, 1) with slope m = 2.
Svetllana [295]
That would be : y = 2x + 1
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Graph f(x)=−1.5x+6.<br><br> Use the line tool and select two points to graph the line.
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Step-by-step explanation:

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3 years ago
Write the equation of a parabola having the vertex (1, −2) and containing the point (3, 6) in vertex form. Then, rewrite the equ
In-s [12.5K]
PART A

The equation of the parabola in vertex form is given by the formula,

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

where

(h,k)=(1,-2)

is the vertex of the parabola.

We substitute these values to obtain,


y  + 2 = a {(x - 1)}^{2}

The point, (3,6) lies on the parabola.

It must therefore satisfy its equation.


6  + 2 = a {(3 - 1)}^{2}


8= a {(2)}^{2}


8=4a


a = 2
Hence the equation of the parabola in vertex form is


y  + 2 = 2 {(x - 1)}^{2}


PART B

To obtain the equation of the parabola in standard form, we expand the vertex form of the equation.

y  + 2 = 2{(x - 1)}^{2}

This implies that

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


We expand to obtain,


y + 2 = 2( {x}^{2}  - 2x + 1)


This will give us,


y + 2 = 2 {x}^{2}  - 4x + 2


y =  {x}^{2}  - 4x

This equation is now in the form,

y = a {x}^{2}  + bx + c
where

a=1,b=-4,c=0

This is the standard form
7 0
3 years ago
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