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Studentka2010 [4]
3 years ago
13

Which are the coordinates of the x-intercept in the equation -4x + 5y = 20?

Mathematics
1 answer:
forsale [732]3 years ago
7 0

Answer:

The x intercept is (-5,0)

Step-by-step explanation:

1. First, it would be helpful to rewrite the equation to be in y=mx+b form.

5y=4x+20

y=(4/5)x+4

2. Then, plug in 0 for y.

0=(4/5)x+4

3. Then, solve.

-4=(4/5)x

-20=4x

x=-5

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Don't know how to express the value of X as any of those answer choices
Alekssandra [29.7K]

9514 1404 393

Answer:

  x = √(w(w+z))

Step-by-step explanation:

The idea with a right-triangle figure of this sort is that all of the triangles are similar. Here, x is the short side of ∆ABC, and the hypotenuse of ∆BDC. This suggests you want to write a similarity statement involving the short side and hypotenuse.

  BC/AC = DC/BC . . . . . short side/hypotenuse

  BC² = AC·DC . . . . . . cross multiply

  x² = (w+z)w . . . . . . substitute letter values

Taking the square root and rearranging to the form of the applicable answer choice, this is ...

  \boxed{x=\sqrt{w(w+z)}}

3 0
3 years ago
1. Given a right circular conea) What is the shape of a cross section parallel to the base of the cone?b) what is the shape of a
AlekseyPX

Given:

There are given the statement, shape of the cross-section that is parallel to the base of the cone.

Explanation:

If the base of the cone that parallels to tye cross-section.

So,

The shape of the cross-section is

8 0
1 year ago
The triangles are similar by the AA Similarity Postulate. Find the value of x
alexandr1967 [171]
4.5/3= 1.5

It is 1.5 times bigger than the smaller triangle.

So,

5*1.5= 7.5

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I hope this helps!
~kaikers
3 0
3 years ago
Line k is parallel to y= -2x - 1 and passes through the point (4,3). What is the y intercept of line k?
Schach [20]
Yk what all above you can’t go wrong with choosing all of the em tbh cuz u would get one of them righ
4 0
2 years ago
10 / 5 + 10 - 9 x 11<br>​
Ugo [173]

Order of Operations:

1. Parentheses

2. Exponents

3. Multiplication

4. Division

5. Addition

6. Subtraction

Step-By-Step Explanation:

1. Take 9 • 11 = 99

2. Take 10 / 2 = 5

3. Take 2 + 10 - 99 = -87

So -87 would be your final answer. Hope that helped!

7 0
3 years ago
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