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andrey2020 [161]
3 years ago
12

Help.Solve 5x + 3 = -7A. -2B. -0.8c. 2D.-20​

Mathematics
2 answers:
trapecia [35]3 years ago
5 0

5x + 3 = -7

move -3 to the other side

sign changes from -3 to +3

5x+3-3= -7-3

5x= -10

divide both sides by 5 to get x by itself

5x/5= -10/5

cross out 5 and 5, divide by 5 and then becomes 1*1*x= x

x= -10/5

x= -2

answer:

A. -2

alexandr1967 [171]3 years ago
3 0
The answer Is A -2 :)
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Ann [662]

The +1 in parenthesis is adding one to the x value, which shifts the graph 1 unit to the left, called a horizontal translation.

The 3 outside of the parenthesis is multiplying the X value by 3, which narrows the shape of the graph ( makes the curve 3 times sharper), which is called a vertical stretch.

6 0
3 years ago
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According to the graph, if only one unit was produced, the cost per unit would be $1.00. In
riadik2000 [5.3K]

Answer:

Modify (restrict) the function's Domain as indicated below

Step-by-step explanation:

The factory would study the expenses involved with setting the factory into production, wages for workers' salaries, and other factory running expenses into the total cost of producing the units (such would obviously drastically change the graph from the one presented), and make sure that there is a threshold at least on the "breaking even" with the estimated revenue coming from the units produced/ordered.

That threshold can be set to a "<em>minimal</em>" number of units ordered in order to start production. If one wants to use the original graph, with some minor modifications, one can change it so it starts from that threshold point onward. For example, if the minimal number of units to be produced in order to "break even" considering the "revenue minus total expenses larger than zero" condition, the given graph could be modified to the one shown in red in the image attached. In such graph we are estimating that the positive "revenue minus total cost" break even point is at the production of 13,000 units, so we set the starting of the piece-wise function there, and use a non-solid dot to indicate that the number of units produce should be strictly larger than the break-even point (13,000 units) in order to be profitable. This involves a change in the original function's Domain, restricting its first section from the original one (which starts at zero: 0\leq x\leq 25,000) to a domain that starts at a number of units strictly larger than 13,000 (13,000) in our example

3 0
4 years ago
Which two values of x are roots of the polynomial below 5x^2-5x+1
damaskus [11]
To find roots of a polynomial, you have to find numbers that when you multiply will equal 5 (because 5*1) and add to -5. since the only factors of 5 are 1 & 5, they do not equal -5. you will have to use the quadratic formula to find the roots. if you want decimals, they are 0.723607 & 0.276393

3 0
3 years ago
4x + 5 = 25 x = 2 x = 5 x = 2 x = 7
olchik [2.2K]

Hi there!

Answer:

\huge\boxed{x = 5}

4x + 5 = 25

Subtract 5 from both sides:

4x + 5 - 5 = 25 - 5

4x = 20

Divide both sides by 4:

4x/4 = 20/4

x = 5.

3 0
3 years ago
Need someone with a big brain to help lol<br> Solve for x
AfilCa [17]

Answer:

x=4

Step-by-step explanation:

Hey there!

I am going to use this image as an example so you can understand the formula

The formula for problems like these is

B(BA)=D(DC)

So all we have to do is plug in the numeric values

so now we have 5(5+x+3)=6(6+x)

now we just solve for x

5(5+x+3)=6(6+x)

step 1 distribute the 5 to what is in the parenthesis (5, x and 3)

5x5=25

5*x=5x

5x3=15

so now we have

25+5x+15=6(6+x)

step 2 distribute the 6 to what is in the parenthesis (6 and x)

6x6=36

6*x=6x

now we have

25+5x+15=6x=36

step 3 combine like terms, the only like terms are 25 and 15

15+25=40

now we have

40+5x=6x+36

step 4 subtract 5x from each side

5x-5x cancels out

6x-5x=x

now we have

40=x+36

step 5 subtract 36 from each side

40-36=4

36-36 cancels out

now we have

x=4 so we can conclude that x=4

hope this helps :)

5 0
3 years ago
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