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arsen [322]
2 years ago
14

4

Mathematics
1 answer:
Helen [10]2 years ago
6 0

Answer:

y-intercept is (0, -4)

x-intercept is (-5, 0)

Step-by-step explanation:

Remember the x-intercept and the y-intercept are the points on the graph where the line crosses the x-axis and the y-axis respectively.

We can find the x intercept and the y intercept a couple of ways. One way is to graph the line, which I will do later. The other way is to do a little math.

The equation of a line in y-intercept form is

y = mx + b

where b = the y-intercept

In our equation above and solving for y we get the y-intercept is -4

4x + 5y =  - 20 \\ 5y =  - 4x - 20 \\ y =  -  \frac{4}{5} x - 4

Doing more algebra and solving for x we get the x intercept is negative 5.

y =  -  \frac{4}{5}  - 4 \\ y  + 4 =  -  \frac{4}{5} x \\ x =  -  \frac{5}{4} y -  \frac{20}{4 }  \\ x =  -  \frac{5}{4} y - 5

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PLEASE HELP ASAP WILL MARK BRAINLIEST!!
Papessa [141]

Answer:

Prime.

Step-by-step explanation:

x^2-7x+8\\

First let's multiply our outer coefficients in this case 1 and 8, so we have 1x8=8.  Now the point of this is to get the factors of 8 and see if we can get that middle term -7.  Factors of 8 are 1x8, 2x4 and that's it.  From there I notice that -8+1 = -7 and so:

x^2-7x+8 = x^2-8x+x+8 = x(x-8)+(x+8)

Notice that the (x-8) and (x+8) are not the same factors, therefore the factors are not any of those answer choices and so it's prime.  You can calculate the factors by using the quadratic formula, however I think that is beyond the scope of this question.

7 0
3 years ago
4*10^6 is how many times as large as 1*10^4?
maxonik [38]
So you want to know how many times  4*10^6 fits inside 1*10^4, if so, here's the answer:

First we see that 4*10^6 is equal to <span>4,000,000, and</span> 1*10^4 is equal to 10,000.

Then we divide \frac{4,000,000}{10,000}, and we get 400, so.

The answer is 400.

Hope this helped! c:
6 0
2 years ago
annie is planning on buying a gym membership there is a flat fee of $25 and the membership cost $20 per month. Write an equation
defon

Answer:

y = 20x + 25

Step-by-step explanation:

y is the total

25 dollars to start plus the 20 dollars per month

3 0
3 years ago
Find coordinates for (-3, -6) when translated 5 units up
Leni [432]
The coordinates would be (-3,-1)

5 0
3 years ago
Read 2 more answers
The area of a rectangular wall of a barn is 75 75 square feet. its length is 10 10 feet longer than the width. find the length a
ziro4ka [17]
A = L * W
A = 75
L = W + 10

75 = W(W + 10)
75 = W^2 + 10W
W^2 + 10W - 75 = 0
(W + 15)(W - 5) = 0

W + 15 = 0
W = -15...not this one because it is negative

W - 5 = 0
W = 5 <=== width is 5 ft

L = W + 10
L = 5 + 10
L = 15 <=== length is 15 ft
6 0
3 years ago
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