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Vsevolod [243]
2 years ago
7

Two mechanics worked on a car. The first mechanic worked for

Mathematics
1 answer:
Temka [501]2 years ago
4 0
Write a system of equations:

x + y = 125

20x + 15y = 2100

Solving:

x = 125 - y

20(125 - y) + 15y = 2100
2500 - 20y + 15y = 2100
2500 - 5y = 2100
-5y = 2100 - 2500
-5y = -400
y=80

x + 80 = 125
x = 125 - 80
x = 45

The first charges 45$ per hour and the second charges 80$ per hour
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Answer: xm + y = z  xm = z - y  x = (z - y)/(m)

Step-by-step explanation: hope this helped :)

7 0
3 years ago
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The difference of a number times
Hunter-Best [27]
7 x  - 5 = 8 
7 x = 8 + 5
7 x = 13
x = 13/7 


7 ( 13/7) - 5 = 8 
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5 0
3 years ago
A zoo has a total of 8 lions and tigers. The number of tigers is one less than twice the number of lions. Write a system of equa
valina [46]

Answer:

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Step-by-step explanation:

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4 0
2 years ago
Enter an inequality that represents the graph in the box.
ANTONII [103]

The inequality that represents the graph in the box  is

y>-3x+6

Given :

The graph of the linear inequality

Lets pick two points from the graph to frame the linear equation

Slope intercept form of the equation is

y=mx+b

Where m is the slope and b is the y intercept

y intercept is (0,6) from the graph

so b=6

Now we find out slope m  using formula

Pick two points (0,6) and (2,0)

slope = \frac{y_2-y_1}{x_2-x_1} \\m=\frac{0-6}{2-0} =-3

m=-3

So the equation is y=-3x+6

Now we check the inequality sign by testing any point on shaded area

lets pick (4,0)

lets plug in 4 for x  and 0 for y

y=-3x+6\\0=-3(4)+6\\\\0=-6\\0>-6

The inequality for the given graph is

y>-3x+6

we cannot use >= sign because we have dotted lines

Learn more : brainly.com/question/17203372

5 0
3 years ago
I need help with this math question. What is the Area of this shape?
zubka84 [21]

Answer:

A=174

Step-by-step explanation:

Step 1: Separate the figure into two separate shapes, a triangle and a square

Step 2: Find the dimensions of the triangle and square.

Square - l=12 w=12

Triangle - h=5, b=12. (The height was found by subtracting the length of the square (12) from the total length (17).

Step 3: Solve by using formulas

A=(5)(12)/2=30

A=12*12=144

Step 4: Add the parts together

144+30=174

A=174

5 0
2 years ago
Read 2 more answers
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