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drek231 [11]
3 years ago
13

X-70/x<-3 solve for x under the assumption that x>0

Mathematics
1 answer:
Virty [35]3 years ago
4 0

<span>Simplifying 0x + 7 + 5x = 2x + 30 + 40 Anything times zero is zero. 0x + 7 + 5x = 2x + 30 + 40 Combine like terms: 0 + 7 = 7 7 + 5x = 2x + 30 + 40 Reorder the terms: 7 + 5x = 30 + 40 + 2x Combine like terms: 30 + 40 = 70 7 + 5x = 70 + 2x Solving 7 + 5x = 70 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 7 + 5x + -2x = 70 + 2x + -2x Combine like terms: 5x + -2x = 3x 7 + 3x = 70 + 2x + -2x Combine like terms: 2x + -2x = 0 7 + 3x = 70 + 0 7 + 3x = 70 Add '-7' to each side of the equation. 7 + -7 + 3x = 70 + -7 Combine like terms: 7 + -7 = 0 0 + 3x = 70 + -7 3x = 70 + -7 Combine like terms: 70 + -7 = 63 3x = 63 Divide each side by '3'. x = 21 Simplifying x = 21</span>
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Can someone please help me?!!!!
My name is Ann [436]
Firstly let’s assume she is correct and use an equal sign:
1/2(12x + 24) = 3(2x + 4)

Now simplify both sides:
1/2 • 12x = 6x
1/2 • 24 = 12
6x + 12

3 • 2x = 6x
3 • 4 = 12
6x + 12

And:
6x + 12 = 6x + 12
Therefore they are equivalent, she is correct.
4 0
3 years ago
Find the solution of this system of equations 10x-7y=-1 and -2x-7y=-25
Sergio039 [100]

Answer:

<h2>x = 2, y = 3 → (2, 3)</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}10x-7y=-1\\-2x-7y=-25&\text{change the signs}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}10x-7y=-1\\2x+7y=25\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad12x=24\qquad\text{divide both sides by 12}\\.\qquad x=2\\\\\text{Put it to the second equation}\\2(2)+7y=25\\4+7y=25\qquad\text{subtract 4 from both sides}\\7y=21\qquad\text{divide both sides by 7}\\y=3

8 0
4 years ago
Can anyone help me please? i have 14 more minutes to finish this can anyone help?
valentinak56 [21]

Answer:

B

Step-by-step explanation:

A is 3-2 which is 1, not 5.

C is 3(2), which is 6, not 5.

D is 6, which is not 5.

-hope it helps

5 0
3 years ago
Read 2 more answers
Please answer the question to the best of your ability :)
Dafna1 [17]

Answer:

b)

Step-by-step explanation:

the HCF of 8 and 12 is 4 and then you take the smallest number of x, y and z's

they both have 1 x, the first one only has one y and they both have z^2

6 0
3 years ago
Help please anyone?!‼️
hodyreva [135]

Answer:

-20.1 degrees Celsius

Step-by-step explanation:

The system started at -12.6 Celsius. It then cooled 7.5 degrees during a reaction. Because it cooled, that means the difference is negative.

-12.6 degrees Celsius - 7.5 degrees Celsius = -20.1 degrees Celsius

It is important to always remember your correct names and variables for numbers in chemistry!

7 0
4 years ago
Read 2 more answers
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