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Igoryamba
3 years ago
5

Who can help me on this first question???!!!

Mathematics
1 answer:
Mashcka [7]3 years ago
5 0

Answer:

B. y=-2x+4

Step-by-step explanation:

to get to each point you go up 2 to the left 1, up is positive as if u go up in the graph you go y+1 left is negative as to go left you go x-1 so 2/-1 is m(the slope) or -2. now find the y intercept is the point where x and y cross at x=0 which is 4. put it together and you have y=-2x+4

You might be interested in
The length of a rectangular garden is 6 feet longer than its width. The garden's perimeter is 180 feet. Find the length of the g
slavikrds [6]
Perimeter is all sides added up together. So as you don't know a side's length you can put it as x and make an equation.
x + x + x + 6 + x + 6 = 180
4x +12 = 180
4x = 180 - 12
4x = 168
x = 168/4
x = 42
as length is 6 feet longer than width length is equal to 42 + 6 = 48 feet
4 0
3 years ago
A building in a city has a rectangular base. the length of the base measures 65 ft less than twice the width. the perimeter of t
dybincka [34]

By solving a system of equations, we will see that the width is 170ft and the length 275 ft.

<h3>How to get the dimensions of the base?</h3>

For a rectangle of length x and width y, the perimeter is:

P = 2*(x + y).

Here we know that:

x = 2y - 65ft

p = 890ft = 2(x + y)

So we have a system of equations.

To solve this, we need to replace the first equation into the second one:

890ft = 2(x + y)

890ft = 2(( 2y - 65ft) + y)

Now we can solve this for y.

890ft = 4y - 130ft + 2y

890ft + 130ft = 6y

1020ft/6 = y = 170ft

So the width is 170ft, and we know that:

x = 2y - 65ft = 2*(170ft) - 65ft = 275ft

So the length is 275 ft.

If you want to learn more about systems of equations:

brainly.com/question/13729904

#SPJ1

5 0
2 years ago
6) Does the mapping diagram show a function?
Serhud [2]

Answer:

No, you cannot have the same input for 2 different outputs

Step-by-step explanation:

4 0
3 years ago
Is there a way to understand inequalities better? I don't get them at all!
AlekseyPX
Ok for inequalities it's this < and > that so here's a example prob 3>2 so as my teacher used it put it "it's like the little number eats the bigger number." For negatives the one that's being eaten would be the one that's the closest to 0 so -3>-5 also alone way of doing this is to make a number line that's another way I was taught how to do these. I hope this helps you!
7 0
3 years ago
Factor by using the difference of two cubes
Nikolay [14]

Answer:

Step-by-step explanation:

a) a^3-64b^3

=(a)^3-(4b)^3

=(a-4b)(a^2+4ab+16b^2)

b) 3x^3-81y^3z^6

=3(x^3-27y^3z^6)

=3{(x)^3-(3yz^2)^3}

=3(x-3yz^2)(x^2+3xyz^2+9y^2z^4)

c)16a^3b^3-54c^3d^3

=2(8a^3b^3-27c^3d^3)

=2{(2ab)^3-(3cd)^3

=2(2ab-3cd)(4a^2b^2+6abcd+9c^2d^2)

hope u got!!

6 0
3 years ago
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