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sweet-ann [11.9K]
3 years ago
8

Solve for x in the equation 3x2-18+5=47

Mathematics
1 answer:
Airida [17]3 years ago
7 0
3x^2-18+5=47
3x^2 = 60
x^2 = 20
x = 4.472 , x = - 4.472
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Complete the equation of the line through (-8-2) and (-4-6)
Kisachek [45]

Answer:

Step-by-step explanation:

since you are given two points use the point- slope formula and the slope formula

y-y1 = m( x -x1)   and  m = y2 -y1 / x2 - x1        

find the slope m, 1st

p1 = (x1,y1)  given (-8,-2)

p2 = (x2,y2) given (-4,-6)

m = -6-(-2) / -4-(-8)

m = -6+2 / -4+8

m = -4 / 4

m = -1  :)

now use the slope you just found and the point-slope with either given point.. pick one.. which ever seems easier... they seem about the same to me

y - (-8) = -1(x-(-2))

y+8 = -1(x+2)

y+8 = -x-2

y = -x-2-8

y= -x-10

and your done :)

4 0
3 years ago
The graph shows the distance a car traveled, y, in x hours:
meriva

Answer:

The correct answer is 30

Step-by-step explanation:

Given: The x-axis represents the time in hours and the y-axis represents the distance in miles.

The line passes through the points (2,60) and (4,120)

To find: The rise-over-run value for the relationship in the graph.

\begin{aligned}m &=\frac{R i s e}{R u n} \\&=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \\&=\frac{120-60}{4-2} \\&=\frac{60}{2} \\&=30\end{aligned}

Thus, the rise-over-run value for the relationship represented in the graph is 30.

4 0
3 years ago
Read 2 more answers
A photograph of sides 35cm by 22cm is mounted onto a
trapecia [35]
<h3>Answer:  580 square cm</h3>

===================================================

Work Shown:

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B = length*width

B = 45*30

B = 1350

C = area of the border only

C = B - A

C = 1350-770

C = 580 square cm

7 0
3 years ago
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Please help me. i need help
eduard

Equation: n/4=24

Solution: n= 96

3 0
3 years ago
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1.5^-2. how do i simplify that? the ^ means -2 is an exponant
hodyreva [135]
1.5 = 1 1/2 = 3/2
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Then you square the numerator, then square the denominator: 2^2/3^2 = 4/9

8 0
3 years ago
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