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KIM [24]
2 years ago
12

Evaluate -5x+8 when x=3 The value of the expression is

Mathematics
2 answers:
Effectus [21]2 years ago
3 0

Answer:

-7

Step-by-step explanation:

replace x by 3

-5^3+8

-15+8

=-7

Lostsunrise [7]2 years ago
3 0
The answer is -7
-5x+8
-5(3)+8
-15+8
-17
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How do I solve this problem?
Brrunno [24]
A. x=the cost of one lunch. 60.25=5x+3(x-5.25)

b. 60.25=5x+3x-15.75                    60.25+15.75=8x-15.75+15.75

 76=8x                  76/8=8x/8              9.50=x

A lunch is $9.50. If you are not sure, check my answers. Hope this helped.
8 0
3 years ago
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vampirchik [111]

Answer:

im pretty sure blue

Step-by-step explanation:

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8 0
3 years ago
Will give brainliest!!! hurry up and solve it plzz​
LuckyWell [14K]

Answer:

8

Step-by-step explanation:

we can say that AD is congruent to DC

so your equation for x is: 4x - 1 = 2x

solve this to get x = 0.5

plug x into and equation and multiply you answer by 2 to find the hypotenuse of triangle ABC and DEF

4(0.5) - 1 = 1

hypotenuse: 1 x 2 = 2

since we know x is 0.5, plug this into 4x + 1 to find the length of the leg FE,

4(0.5) + 1 = 3

In the diagram, it shows that the legs of triangle are congruent

this means that FE, ED, BA, and BC are all congruent

since we know FE is 3, we know that all the other sides are 3 as well

this means that the perimeter of the triangle is: leg + leg + hypotenuse

so 3 + 3 + 2

the perimeter is 8

4 0
3 years ago
If a = 6 and b = 12 What is side c of a right triangle using the pythagorean<br> theorm?
Sunny_sXe [5.5K]

Answer:

36 root 5 I believe

Step-by-step explanation:

4 0
3 years ago
What is x? And what are the steps to get x?
gregori [183]

Answer:

x is the variable

Step-by-step explanation:

do area = base times height

5 0
3 years ago
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