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Alex73 [517]
3 years ago
8

2x-1=4 -2x+y=8 Find the value of x

Mathematics
1 answer:
andrezito [222]3 years ago
4 0

Answer:

Step-by-step explanation:

2x=5

x=2.5

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Which real-world story is represented by the addition problem (–2) + (–3) = –5?
tangare [24]

The answer is A.

If the submarine descended then it went below, and if it ascended it went above. Therefore:

"Descended 2 miles"= -2

"Then descended another 3 miles"= -3

(-2)+(-3)=-5

Adding two negatives together will give you a bigger negative so the submarine would then be 5 miles below its original location.

6 0
3 years ago
Answer choices:<br><br> A: y=x<br> B: y=1/4x -2<br> C: y= -x + 7/4<br> D: y= 7/4x -2
Nuetrik [128]

Answer:

b: y=1/4x -2

Step-by-step explanation:

It says the answer in the question. the slope on the graph is really just 1 though.

5 0
2 years ago
Suppose you are given a parabola with two points that have the same y-value, such as (-7, 11) and (3, 11). Explain how to find t
Hoochie [10]

By using the midpoint formula and the equation of the line, the equation of the line of symmetry is x = - 2.

<h3>How to derive the equation of the axis of symmetry </h3>

In this question we know the locations of two points with the same y-value, which means that the axis of symmetry is parallel to the y-axis and that both points are equidistant. Thus, the axis of symmetry passes through the midpoint of the line segment whose ends are those points.

First, calculate the coordinates of the midpoint by the midpoint formula:

M(x, y) = 0.5 · (- 7, 11) + 0.5 · (3, 11)

M(x, y) = (- 2, 11)

Second, look for the first coordinate of the midpoint and derive the equation of the line associated with the axis of symmetry:

x = - 2

By using the midpoint formula and the equation of the line, the equation of the line of symmetry is x = - 2.

To learn more on axes of symmetry: brainly.com/question/11957987

#SPJ1

3 0
2 years ago
Name the number property illustrated by this<br>equation:<br>-2(–3 + 7) = -2(-3) + (-2)(7)​
erica [24]

Answer:

The distributive property of multiplication

Step-by-step explanation:

<u>explanation</u>:-

The distributive property of multiplication states that when a number is multiplied by the sum of two numbers, the first can be distributed to both of those numbers and multiplied by each of them separately,then adding the two products together for the same result as multiplying the first number by sum.

a(b+c) = a.b + a.c

so -2 ( -3+7) = -2(-3) + (-2)(7)

   -8  =  6 -14

   -8 = - 8

give data we will use distributive property of multiplication

5 0
3 years ago
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If a video is getting 12,000 views every 4 hours, how long will it take to reach 30,000 views?
ValentinkaMS [17]

Step-by-step explanation:

12,000 views = 4 hours

=> 30,000 views = 4 * (30000/12000) = 10 hours.

Hence it will take 10 hours.

4 0
3 years ago
Read 2 more answers
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