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slega [8]
3 years ago
7

Solve for x. ​4(5x−20)=−20​ Enter your answer in the box. x =?

Mathematics
2 answers:
MrRissso [65]3 years ago
6 0

Answer:

4(5x-20)=-20 should be x=3

Svet_ta [14]3 years ago
3 0

Answer:

x = 3

Step-by-step explanation:

4(5x−20)=−20 | Given

20x - 80 = -20 | Distribute the number on the outside (multiply all numbers on the inside by the number on the outside, 4×5x and 4×-20)

20x = 60 | Add 80 to both sides (do the opposite operation, if its a negative number add it to both sides)

x = 3 | Divide both sides by 20x (20x turns into x and 60 turns into 3 via 60÷20)

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For the coordinates of P and M (the midpoint) are given. Find the coordinates for Q.
zhenek [66]
Given an endpoint of a segment and a midpoint, the other endpoint can be obtained by manipulation of the midpoint formula. The said formula is shown below:

Let: (a,b) = coordinates of point 1 ; (c,d) = coordinates of point 2; (e,f) = coordinates of the midpoint

Midpoint = ( (a+c)/2 , (b + d)/2 )

From the formula: (a+c)/2 = e ; (b + d)/2 = f

Since we are already given an endpoint and the midpoint, we can solve for the other endpoint using the obtained equations. This is shown below:

(a+c<span>)/2 = e
</span>(3 + c)/2 = 0
c = -3

(b + d<span>)/2 = f
</span>(11 + d)/2 = 0
d = -11

Therefore, the coordinates of the other point is Q(-3,-11)
8 0
4 years ago
How to make a function table
DanielleElmas [232]
So. We are going to take the first example which is -2. The rule is what your going to "plug" or put -2 into. So your equation should look like -2^2-5 (^2 is that exponent) put that into your calculator and you should get -9. That -9 is your Y value. Your -2 is your X value . So your ordered pair is (-2,-9) just repeat steps for -1, 0, and 1. Hope this helps!
4 0
4 years ago
Maria bought 3.5 pounds of chicken at the store. The chicken was $2.50 a pound. How much did Maria spend on the chicken.
IceJOKER [234]
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4 0
3 years ago
Read 2 more answers
The bird population on an island is declining at a rate of 2.2% per year. The population was 3,500 in the year 2009. Which answe
Gwar [14]
Given:2009 : 3,500 populationdecrease of 2.2% per year. 100% - 2.2% = 97.8%
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6 0
3 years ago
What is the area of the sector? Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter
n200080 [17]

Question:

What is the area of the sector? Either enter an exact answer in terms of π or use 3.14 and enter your answer as a decimal rounded to the nearest hundredth.

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete as the values of radius and central angle are not given.

However, I'll answer the question using the attached figure.

From the attached figure, the radius is 3 unit and the central angle is 120 degrees

The area of a sector is calculated as thus;

Area = \frac{\alpha }{360} * \pi r^2

Where \alpha represents the central angle and r represents the radius

By substituting \alpha = 120 and r = 3

Area = \frac{\alpha }{360} * \pi r^2 becomes

Area = \frac{120}{360} * \pi * 3^2

Area = \frac{1}{3} * \pi * 9

Area = \pi * 3

Area = 3\pi square units

Solving further to leave answer as a decimal; we have to substitute 3.14 for \pi

So, Area = 3\pi becomes

Area = 3 * 3.14

Area = 9.42 square units

Hence, the area of the sector in the attached figure is 3\pi or 9.42 square units

8 0
3 years ago
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