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anastassius [24]
3 years ago
15

How do you solve for the x?

Mathematics
1 answer:
Norma-Jean [14]3 years ago
4 0

when we simplfy 3x^2-4x-20=0 then by using quadratic formula we get x=2 Or x=-10/3

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I need answers asappp
aivan3 [116]

Answer:1)5x^2-11x

             2) x^2-3x

Step-by-step explanation:

1)(f+g)(x)

f(x)=3x-7

g(x)= 2x-4

[(3x-7)+(2x-4)](x)

3x^2-7x+2x6^2-4x

=<u>5x^2-11x</u>

2) (f-g)(x)

[(3x-7)-(2x-4)](x)

(3x-7-2x+4)(x)

3x^2-7x-2x^2+4x

x^2-3x

4 0
3 years ago
A professor grades students on four tests, a term paper, and a final examination. Each test counts as 15% of the course grade. T
Dmitry [639]

Answer:

Marilee wants to earn an "A" in a class and needs an overall average of at least Her test grades are 88 , 92,100 , and 80 . The average of her quizzes is 90 and counts as one test grade. The final exam counts as 2.5 test grades. What scores on the final exam would result in Marilee's overall average of 92 or greater? (See Example 9

4 0
3 years ago
Write on equation if the slope is 3/4<br> and the y-intercept is -4,
KonstantinChe [14]

Answer:

thw abswer os tywentr yaxel

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through the point (6,4) and has a slope of -2/3
Aleksandr [31]

Answer:

using the given points substitute it into the equation y=mx+c

therefore

y=4

m=-2/3

X=6

c=?

so we should c=intercept

Step-by-step explanation:

y=mx+c

4=-2/3(6)+c

4=-4+c

c=4+4=8

therefore equation of the graph is y=-2/3X+8

4 0
3 years ago
Peter measures the angles in a triangle.
wlad13 [49]
Yes, it would be correct because a triangle has to add up to 180 degrees when all the angles are added up

A) Explanation:
95 + 10 + 75 = 180

B) A triangle will always add up to 180.
4 0
3 years ago
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