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bazaltina [42]
3 years ago
8

Solve each problem by working backward.

Mathematics
2 answers:
ddd [48]3 years ago
4 0
(x+3)/4=16 is the word part or whatever, now ya gotta solve for x:))
OLEGan [10]3 years ago
3 0

Answer: X= 4/3 I hope this helps:)

Step-by-step explanation:

(3x ). • 4= 16

divide by 4

3x = 4

divide by 3

x= 4/3

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3 years ago
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If M (6,8) is the midpoint of line segment AB, and if A has coordinates (2,3) , find the coordinates of B.
sveticcg [70]
Graphing is one way to do the problem.But sometimes, graphing it is hard to do.So here’s an algebraic method.
If M(m1, m2) is the midpoint of two points A(x1, y1) and B(x2, y2),then m1 = (x1 + x2)/2 and m2 = (y1 + y2)/2.In other words, the x-coordinate of the midpointis the average of the x-coordinates of the two points,and the y-coordinate of the midpointis the average of the y-coordinates of the two points.
Let B have coordinates (x2, y2) in our problem.Then we have that 6 = (2 + x2)/2 and 8 = (3 + y2)/2.
Solving for the coordinates gives x2 = 10, y2 = 13
8 0
3 years ago
-.At a fair hamburgers sell for $3.00 each and hot dogs sell for $1.50 each. The equation 3x + 1.5y = 30 describes the number of
NikAS [45]

Answer:

Part a) The y-intercept is the point (0,20) and the x-intercept is the point (10,0)

The graph in the attached figure

Part b) See the procedure

Step-by-step explanation:

<u><em>The questions are</em></u>

Part a) Find the intercepts and graph the function

Part b) What does each intercept represent?

Part a) Find the intercepts and graph the function

Let

x-----> the number of hamburgers

y ----> the number of hot dogs

we have

3x+1.5y=30

Remember that

The <u><em>y-intercept</em></u> is the value of y when the value of x is equal to zero

so

For x=0

3(0)+1.5y=30

1.5y=30

y=20\ hot\ dogs

The y-intercept is the point (0,20)

The <u><em>x-intercept</em></u> is the value of x when the value of y is equal to zero

so

For y=0

3x+1.5(0)=30

3x=30

x=10\ hamburgers

The x-intercept is the point (10,0)

Plot the intercepts and graph the line

see the attached figure

Part b) What does each intercept represent?

The x-intercept is the number of hamburgers they can buy if they buy no hot dogs

The y-intercept is the number of hot dogs they can buy if they buy no hamburgers      

5 0
3 years ago
Which of the following is a reflection of ( 2,4 ) across the x-axis?
fiasKO [112]

Answer:

(2,-4)

Step-by-step explanation:

(2,4) is located in Quadrent I (+,+), if you reflect over the x-axis, it would be in Quadrent IV (+,-).

if you dont understand I suggest you draw a coordinate plane on a graphing notebook.

7 0
3 years ago
Simplify:
stepan [7]

Answer:

simplify question is 3a^2 +6a+9ab

Step-by-step explanation:

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3 years ago
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