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jekas [21]
3 years ago
9

What is the sum of {-3x}^{2}−3x 2 -7x+−7x+88 and {-5x}^{2}−5x 2 +6x-4+6x−4?

Mathematics
1 answer:
dezoksy [38]3 years ago
4 0
7772728181181
I think
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1. - 4 + (-8) =
lara [203]
1)4-8=-4
2)3+4-5=2
3) -13
4)8+12=20
5) -14
4 0
3 years ago
Read 2 more answers
According to a study conducted in one city, 34% of adults in the city have credit card debts of more than$2000. A sample n=300 i
JulsSmile [24]

Answer:

p hat≈N(0.34,0.0273)

Step-by-step explanation:

Given information p=0.34

Number of random samples=300

The sampling distribution of p hat is

p∧≈N(0.34,\sqrt{\frac{0.34(1-0.34)}{300}})

    ≈N(0.34,0.0273)

4 0
3 years ago
Find the y-intercept and the x-intercept of the line 2x-4y=10
kompoz [17]
Finding y intercept and x intercept is easy:

X intercept will be of the form (x,0) and y intercept will be of the form (0,y)

● If you put x=0 in the equation, you will get y-intercept.

● If you put y=0 in the equation, you will get x-intercept.
______________________________

Given equation: 2x - 4y = 10

◆ Put x = 0
2×0 - 4y = 10
=> -4y = 10
=> y = 10/(-4)
=> y = -5/2

Thus y intercept is (0, -5/2)

◆Put y = 0
2x - 4×0 = 10
=> 2x = 10
=> x = 10/2
=> x = 5

Thus the x intercept is (5,0)
4 0
3 years ago
Y + 2 =3 (x-6) <br>find the slope and a point on the line​
Alex777 [14]

Answer:

slope = 3, point = (6, -2)

Step-by-step explanation:

This is in point-slope form which looks like this : y-y1 = m(x-x1).

m is the slope, an x1 and y1 are the x and y coordinates of the point. Remember to flip the sign of the numbers for the points i.e. the y+2 in the equation becomes -2 for the point.

5 0
3 years ago
if one gallon of paint covers 825 square feet, how much paint is needed to cover 2640 square feet? Make a prediction ​
Nitella [24]

Answer:

3.2 gallons

Step-by-step explanation:

Write a proportion:

1 gallon / 825 square feet = x / 2640 square feet

Solve:

x = 3.2 gallons

7 0
3 years ago
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