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marin [14]
4 years ago
13

Solve each equation for x

Mathematics
1 answer:
WITCHER [35]4 years ago
5 0
X=c/1/a+1/b

Because you have to multiply both sides by x then regroup them, then you divide both sides by 1/a+1/b
You might be interested in
<img src="https://tex.z-dn.net/?f=3x%2B8y%3D-13%2C14x%3D%5Cfrac%7B3y%7D%7B5%7D%20%3D-10" id="TexFormula1" title="3x+8y=-13,14x=\
blsea [12.9K]

Answer:

(~1.6,~-8.6)/(1.599,-8.597)

Step-by-step explanation:

This uses the system of equations, if you'd like to find more examples. First, let's mess with the first equation and solve for the easiest findable variable.

1. 3x+8y = -13 -> x = (-13-8y)/3 & y = (-13-3x)/8

2. Using the x equation because it's easier to use when entering into the second equation, we can get 14(-13-8y/3)

(-182-112y)/3 = -10 = 3y/5 is then our new eqn,

Then, we can make the fractions on the right and left equal and find y

9y/15 = -910-560y/15 ->

9y = -910-560y

569y = -910

y = 1.599

3. Now, insert 1.599 into the first x equation we made, x = (-13-8y)/3

to get x = -8.597

4. Your solution is 1.599, -8.597 or ~1.6,~-8.6

8 0
3 years ago
Which of the expressions are equivalent to the one below? Check all that
garik1379 [7]
Hi hi!!

So, A is correct because it is the same equation just (3+4) is in the front. D is also correct because it is the same question because when a number is for example like 10(3+4) it mean multiplication and in this case you are multiplying. B and C are incorrect because they do not have a total of 70. The original equation, 10x(3+4) = 10x7 = 70.

Correct answers:

A. (3+4)x10
D. 10(4+3)
4 0
3 years ago
You are offered an item for $17.85. If the seller states he normally sells the same item for $19.95, what percentage discount is
Ray Of Light [21]
Take 19.95 and subtract 17.85 from it to get 2.10. Divide 2.10 by 19.95 to get 0.105. Multiply that by 100 and you get 10.52. So it's 10% or maybe 11% if you're supposed to round. Hope this helps
7 0
3 years ago
Read 2 more answers
The perimeter of the rectangle is 46 Inches. Which is the missing length?
GREYUIT [131]

the breadth should be given

4 0
3 years ago
Read 2 more answers
Divide divide divide divide
aliina [53]

Answer:

A

Step-by-step explanation:

\frac{20{x}^{2}  {y}^{5} }{12x {y}^{7} }  =  \frac{ 5x}{3 {y}^{2} }

4 0
3 years ago
Read 2 more answers
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