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arsen [322]
3 years ago
14

4

Mathematics
1 answer:
Helen [10]3 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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➷ You have to collect like terms

In other words, add together the values that have x in them and add together the values that don't

4x + 7x = 11x

8 + 3 = 11

The answer is 11x + 11

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4 0
3 years ago
Read 2 more answers
Is 90° an acute angle, right angle, obtuse<br> angle, or straight angle?
VashaNatasha [74]

Answer:

90 degrees is a right angle.

Step-by-step explanation:

|_

^ That would be a 90 degrees angle.

|

|

|____

|___|____________

Imagine this is a graph, that little square of the right would represent 90 degrees.

Angles less than 90 are acute angles, angles over 90 but under 180 degrees would be obtuse, and angles that are equal to 180 degrees are straight.

6 0
3 years ago
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Sarah has whole milk, which contains 3.25% butterfat by volume, and one type of low-fat milk,
givi [52]

Answer:

D is the answer

Step-by-step explanation:

We want a mixture of low-fat and whole milk to equal 32ounces

Therefore, we know one equation is:

l + w = 32

That 32 ounce mixture should be 2% butter fat

So the amount of butter fat we want is

2% of 32 = 0.64 ounces

At the same time, this mixture contains low-fat and whole milk, which contain 1% and 3.25% butter fat respectively.

therefore, the butter fat in low-fat and whole milk is 0.01l and 0.0325w respectively.

The coefficients are just the percentages in decimal form

Due to the law of conservation of mass,

The addition of these two should yield the final amount of butter fat, meaning the other equation is:

0.01l + 0.0325w = 0.64

7 0
2 years ago
Give the slope of the graph and the unit rate.
klemol [59]

I need help with MY MATH jejehee

6 0
3 years ago
Which two points lie on a line with an undefined slope?
Ierofanga [76]
Slope formula is
m = (y2 - y1)/(x2 - x1)

A. m = (5 - 0)/(-2 + 2)
m = (5)/(0)
m = error

B. m = (-2 - 0)/(0 + 2)
m = (-2)/(2)
m = -1

C. m = (2 - 0)/(2 - 0)
m = (2)/(2)
m = 1

D. m = (0 - 0)/(2 - 3)
m = (0)/(-1)
m = 0

the undefined slope would be the one that came out as error, so A
6 0
3 years ago
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