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weeeeeb [17]
3 years ago
15

Given f(x) = -x + 6 write an equation for f(x + 3).

Mathematics
1 answer:
givi [52]3 years ago
6 0

Answer:

-fx +9f

(i think)

Step-by-step explanation:

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Two mechanics worked on a car. The first mechanic worked for 20 hours, and the second mechanic worked for 15 hours. Together the
klasskru [66]

The rate charged per hour by each mechanic was:  x = 75 $ / hr and y = 115 $ / hr.

<h3>What is a system of equations?</h3>

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

Given;

The first mechanic worked for 20 hours, and the second mechanic worked for 15 hours.

Together they charged a total of $3225.

For this case we have the following variables:

x be the amount of $ / hr that the mechanic obtains 1.

y be the amount of $ / hr obtained by mechanic 2.

An equation to express this would be:

x + y = 190

20x + 15y = 3225

Solving the system of equations we have:

20x + 15(190 -x) = 3225

20x + 2850 - 15x = 3225

5x = 375

x = 75

simililary

y = 190 - x

y = 115

Hence, the rate charged per hour by each mechanic was:

x = 75 $ / hr

y = 115 $ / hr

Learn more about equations here;

brainly.com/question/10413253

#SPJ1

6 0
2 years ago
A Fraction Number: The sum of the numerator and denominator is 40. if its value is 3/5 after simplifying, what is the fraction b
katrin2010 [14]
Here: Fraction = 3/5
Let, original fraction (before simplifying) = 3x/5x
Then, 3x + 5x = 40
8x = 40
x = 40/8
x = 5

So, 3x = 3(5) = 15 & 5(5) = 25

In short, Your Answer would be 15/25

Hope this helps!
5 0
3 years ago
I need help with number 13
nikklg [1K]

The slope-intercept form:

y=mx+b

m - slope

b - y-intercept → (0, b)

We have the point (0, 5). Therefore b = 5.

We have: y = mx + 5

Other point (3, 2). Substitute the coordinates of the point to the equation of the line:

2=3m+5     <em>subtract 5 from both sides</em>

-3=3m      <em>divide both sides by 3</em>

-1=m\to m=-1

<h3>Answer: f(x) = -1x + 5 = -x + 5</h3>
3 0
3 years ago
Determine the surface area of a square pyramid
zloy xaker [14]
SA = s2<span>  +  2 × s × </span>l<span>  Is the formula for the surface area of a square pyramid</span>
3 0
3 years ago
Read 2 more answers
How do you explain -2≤2x-4&lt;4
maxonik [38]
-2\leq2x-4 < 4\ \ \ \ \ |add\ 4\\\\2\leq2x < 8\ \ \ \ |divide\ by\ 2\\\\1\leq x < 4

Answer:\boxed{1\leq x < 4\Rightarrow x\in(-\infty;\ 1]\ \cup\ (4;\ \ibfty)}
3 0
3 years ago
Read 2 more answers
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