MATHEMATICS MIDDLE SCHOOL

2x+4≥24
solve for x
plz help me!

Answers

Answer 1
Answer: In order to solve for x, we must isolate it on one side of the inequality.

2x + 4 ≥ 24

The first step we will take is subtract 4 from both sides, since it is being added on the side with the variable.

2x + 4 ≥ 24
     - 4    - 4

And the inequality now is 

2x ≥ 20

Now, all we have to do is divide both sides by 2, since the variable is being multiplied by 2.

2x ≥ 20
 /2     /2

And the final inequality is

x ≥ 10
Hope that helped! =)

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Liam has 9/10 gallon of paint for painting the bird houses he sells at the craft fair. Each bird house requires 1/20 gallon of paint. How many birdhouse a can Liam paint?

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2x +3y =12 Dan 3x-1y=7

Answers

2x+3y=12
3x-y=7

use subsituttion
make one of the equations equal to a placeholder
3x-y=7
subtract 7
3x-7-y=0
add y
3x-7=y
subsisute 3x-7 for y in first equation

2x+3(3x-7)=12
2x+9x-21=12
11x-21=12
add 21 to both sides
11x=33
divide both sides by 11
x=3

subsitute x for 3 in any equation
3x-7=y
3(3)-7=y
9-7=
2=y


x=3
y=2
2x+3y=12
3y=-2x+12
y=-2x/3+4

3x-1y=7
-1y=-3x+7
y=3x-7

What’s 11.92 rounded to the nearest tenth

Answers

The answer is 11.9 because 2 is less than 5 and closer to 90

Gilbert bought 3 shirts for $15.90 each, including tax. How much did he spend

Answers

So, as Gilbert bought 3 shirts -- we multiple $15.90 by 3 to get us, $47.70. However, as we need to include tax (20%) we find 20% of that cost. 10% of 47.70 is 4.77 -- we then double that as we are calculating 20%. That gives us 9.54 which we add onto the previous cost of the shirts: 47.70 + 9.54 = 57.24 (ANSWER)

Answer:

47.70

Step-by-step explanation:

15.90 times 3 equals your answer  47.70 hope I helped

6/100 as a reduced fraction

Answers

3/50, since both numbers can be divided by 2.

Convert 0.00000825 into scientific notation

Answers

I believe it's 8.25 x 10-6


in scientific notation, we simply leave an number to the left of the decimal dot, so in 0.00000825, we need to move over the dot to 0000008.25 , and for that, we have to move it 6 slots to the right, meaning an exponent of -6, namely 10⁻⁶.


\bf 0\underline{.000008}25\implies 0000008.25* 10^(-6)\implies 8.25* 10^(-6)
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