Determine an expression that represents: perimeter: area: 3x+8;5x+2

For the equation - 3x + 2 = 8 and the inequality

Anarel [89]

Answer:

x= -2; x ≥ 2

Step-by-step explanation:

1. -3x+2=8

Subtract +2 on both sides

-3x+2-2=8-2

-3x=6 Divide by -3 on both sides

-3x/-3=6/-3

x= -2

-2 is the answer for both the equation and inequality.

sorry i was lazy to do the inequality one, but it should be the same answer.

also ignore the fact that theres a line, i could not find the sign without one, o im sorry.

8 0

3 years ago

How to solve -66.17738=6.618(4.3x+1.1)-7.1(x-6.8) have not done algebra in 30 years and cannot help my son with this problem

fenix001 [56]

Let's solve your equation step-by-step.

−66.17738=6.618(4.3x+1.1)−7.1(x−6.8)

Step 1: Simplify both sides of the equation.

−66.17738=6.618(4.3x+1.1)−7.1(x−6.8)

−66.17738=(6.618)(4.3x)+(6.618)(1.1)+(−7.1)(x)+(−7.1)(−6.8)(Distribute)

−66.17738=28.4574x+7.2798+−7.1x+48.28

−66.17738=(28.4574x+−7.1x)+(7.2798+48.28)(Combine Like Terms)

−66.17738=21.3574x+55.5598

Step 2: Flip the equation.

21.3574x+55.5598=−66.17738

Step 3: Subtract 55.5598 from both sides.

21.3574x+55.5598−55.5598=−66.17738−55.5598

21.3574x=−121.73718

Step 4: Divide both sides by 21.3574.

21.3574x

21.3574

=

−121.73718

21.3574

x=−5.7

4 0

3 years ago

Read 2 more answers

Select the equation with the solution x = 25. The equation should have the variable on both sides, a decimal coefficient on the

Katyanochek1 [597]

It isn't A because there isn't a decimal in the hundredths.
It isn't B because it doesn't have a decimal coefficient on the left side: that means it could be C or D, to find out we should find what x is in C:
0.5x-5=0.15x+2
0.5x=0.15x+7
0.35x=7
Divide both sides by 7
0.05x=1
Now multiply both sides by 20:
x=20
That means it must be D, let's make sure:
0.6x-3=0.28x+5
0.6=0.28x+8
0.32x=8
Divide both sides by 8:
0.04x=1
Now multiply both sides by 25:
x=25
So the answer is D

Hope this helps :)

7 0

3 years ago

Please help me out!!!!!

malfutka [58]

Answer:

Okay I might not be right on this one but, I believe you divide 27 and 3. As to the part about simplifying, you might want to give me so details.

Step-by-step explanation:

7 0

3 years ago

Use a benchmark fraction to compare 7 10 ths and 5 12 ths. Explain how you found the answer

elixir [45]

Benchmark fractions are created when we make two different fractions have the same numerator or denominator. In thisi case, we will produce the same denominator. The LCM of 10 and 12 is 60. So the fractions become 42/60 and 25/60. Since the fraction with the larger numerator has a larger value when the denominators are the same, 7/10 is larger than 5/12.

5 0

3 years ago