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Aleksandr [31]
3 years ago
8

-20=4x-4 solve for x simplify your answer as much as possible

Mathematics
2 answers:
LekaFEV [45]3 years ago
4 0

Answer: x = -4

Step-by-step explanation:

so, we first move the terms.

-4x = -4 + 20

then, we just calculate that.

-4x = 16

finally, simply divide both sides.

x = -4

nikklg [1K]3 years ago
4 0
Answer: x = -4

Step by step

4x – 4 = –20

4x = – 20 + 4

4x = –16

x = –16/4

x = –4
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What is the slope and y-intercept from the table below?
Nataliya [291]

Answer:

The equation is y = -5x + 55

Slope = -5

y-intercept = 55

Step-by-step explanation:

The given table shows the different coordinates of points on a straight line.

The general equation of a line is y = mx + b

where m is the slope and b is the y intercept.

Actually , here only 2 values are needed but there are 4 values                       given which is just to check whether our line is correct or not.

Substitute values of x and y in the equation.

Put (1,50),

50 = m + b    ----------(1)

Put (2,45),

45 = 2m + b    -----------(2)

Solve (1) and (2),

Slope , m = -5

y-intercept , b = 55

Hence , the equation is y = -5x + 55.

4 0
3 years ago
A car is driving at the speed of 58 kilometers per hour. how much time will it take to drive for distance of 32 miles ?
quester [9]

well, we know that there are 1.609 kilometers in 1 mile, so 58 kilometers will be 58 ÷ 1.609  ≈ 36.05 miles.

we know the car is doing 36.05 miles in 1 hour, how long will it be for 32 miles?

\bf \begin{array}{ccll} miles&hours\\ \cline{1-2} 36.05&1\\ 32&x \end{array}\implies \cfrac{36.05}{32}=\cfrac{1}{x}\implies 36.05x=32 \\\\\\ x=\cfrac{32}{36.05}\implies x\approx 0.8877\qquad \leftarrow \textit{53 minutes and about 16 seconds}

7 0
3 years ago
PLS HELP NEED THIS ASAP
lisabon 2012 [21]

Step-by-step explanation:

The equations that  could be used to determine the number of chicken wings and sliders in the combination meal is:

75w + 250s = 800

w = 2s

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w = chicken wings

s = sliders

The two equations derived from the question are known as simultaneous equations. Both equations have to be solved together in order to determine the number of wings and sliders.

The total calories of wings = number of wings x calories of each wing

75 x w = 75w

The total calories of sliders = number of sliders x calories of each sliders

250 x s = 250s

8 0
2 years ago
AB contains the points A(7, -11) and B(8,17). find the slope of a line perpendicular to AB
Molodets [167]
If a line were to be perpendicular from said points, the slope of it would be -1/28. Hope this helps!
6 0
3 years ago
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Answer:

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