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wariber [46]
3 years ago
15

Somebody plz help me with this question!

Mathematics
1 answer:
-BARSIC- [3]3 years ago
8 0

Answer:

Socratic app

Step-by-step explanation:

it will help you

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A line passes through (-1,7) and (2,10) which answer is the equation of the line
alekssr [168]

Answer: -x + y = 8

Step-by-step explanation:

So first you are going to want to find the slope of the equation. The equation for that it (y2 - y1)/(x2 - x1) = (10 - 7)/(2 - -1) and that equals 1. So your slope will be 1.

Now you have half of your equation complete, currently it looks like, y = x + b. So we have to find the y intercept. You can do that by plugging in a pair of coordinates into the current equation and solve for b.

Lets plug in (2,10)

10 = 2 + b

10 - 2 = b

b = 8

So now you have your equation in slope intercept form, y = x + 8. Just move the x over to the left side and there is your answer.

-x + y = 8

5 0
3 years ago
A projector enlarges an image in the ratio 20:1. What will be the size of an enlargement of a picture that is 8cm by 6cm?
nydimaria [60]

Answer:

160 cm × 120 cm

Step-by-step explanation:

this means 1 cm turns into 20 cm.

so, 8 cm × 6 cm becomes

8×20 = 160 cm × 6×20 = 120 cm

3 0
2 years ago
What is the value of a in the equation 5a – 10b = 45, when b = 3?
andriy [413]
To get the answer we have to substitute b=3 and solve it.
5a-10b=45
5a-10*3=45
5a-30=45         /+30  add 30 both sides
5a-30+30=45+30
5a=75              /:5    divide both sides by 5
5a:5=75:5
a=15 - its the answer
8 0
3 years ago
Read 2 more answers
5. Lowe's has a new promotional payment plan. All purchases can be paid off on
Cloud [144]

Answer:

The answer: is 3,995

Hope this help you enjoy :D

Step-by-step explanation:

8 0
3 years ago
What is the remainder when the polynomial f(x)=3x^3-4x^2+2x+8 is divided by (x-5)
yaroslaw [1]

The remainder when the polynomial f(x) = 3x³ - 4x² + 2x + 8 is divided by (x - 5) is constant an equal f(5).

Substitute x = 5 to the polynomial:

f(5)=3(5^3)-4(5^2)+2(5)+8=3(125)-4(25)+10+8\\\\=375-100+18=275+18=293

Answer: (3x³ - 4x² + 2x + 8) : (x - 5) = q(x) + 293.

4 0
3 years ago
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