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3 years ago

Write an equation of the line in slope-intercept form.

Mathematics

1 answer:

Oxana [17]3 years ago

5 0

The equation in slope-intercept form is y=2x-2

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Jane is going to fence in her back yard. She has purchased 100 feet of fence she wants to fence in a rectangular area where one

DENIUS [597]

Selection C is appropriate for a fence that extends x feet away from the house and utilizes the full 30 ft width of the house.

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3 years ago

help please! Find the area of parallelogram MLKJ. You will need to use soh cah toa eventually to find the area. Round final answ

Ksju [112]

Answer:

133.5

Step-by-step explanation:

Area of paralleogram is base x height. The base is 15 as given. We need to find the height.

Using triangle MNJ we can find it.

We need to find side MN but we are given an angle adjacent to that side 90. We also given another angle and a side adjacent to that angle 52 and 7 respectively.

We can use law of sines to find MN

$\frac{mn}{ \sin(90) } = \frac{7}{ \sin(52) }$

sin of 90 =1 so multiply 1 by both sides

$mn = \frac{7}{ \sin(52) } \times 1$

simplify that and we get mn=8.9.

So know we can multiply 8.9 by 1t to find the area.

15×8.9=

133.5

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3 years ago

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

2 years ago

Hey guys I really need help on this one!

Marina CMI [18]

I’m pretty sure it’s the last one. :)

4 0

2 years ago

What is the area of this triangle.

chubhunter [2.5K]

Answer:

13 square units

Step-by-step explanation:

You <em>could</em> calculate the length of each side using Pythagorean theorem, then use Heron's formula to find the area. But there's an easier way: find the area of the rectangle that contains the triangle, and subtract the areas of the smaller triangles in the corners.

The area of the rectangle is 4 × 7 = 28.

The area of the upper left triangle is ½(2)(4) = 4.

The area of the upper right triangle is ½(3)(5) = 7.5.

The area of the lower right triangle is ½(1)(7) = 3.5.

So the area of the triangle is:

28 − 4 − 7.5 − 3.5 = 13

6 0

2 years ago