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AnnyKZ [126]
3 years ago
10

How can you solve an equation with a variable on both sides

Mathematics
2 answers:
Ne4ueva [31]3 years ago
8 0
It depends. You'd need to give some example, but generally the idea is to put all variables on one side and everything else on the other side.

15 +2x =2+5x\\
2x-5x=2-15\\
-3x=-13\\
x=\dfrac{13}{3}
dedylja [7]3 years ago
3 0
It depends on where you have it for example, p=3, m=2
 8p+5=7m+15
24+5=14=15
29=29
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Suppose sin(A)=-0.78. use the trig identity sin^2(A)+cos^2(A)=1 and the trig identity tan(A) = sin(A)/cos(A) to find tan(A) in q
Paladinen [302]

In quadrant IV, \cos(A) is positive. So

\sin^2(A) + \cos^2(A) = 1 \implies \cos(A) = \sqrt{1-\sin^2(A)} \approx 0.6258

Then by the definition of tangent,

\tan(A) = \dfrac{\sin(A)}{\cos(A)} \approx \dfrac{-0.78}{0.6258} \approx \boxed{-1.2465}

5 0
2 years ago
Your friend Ana received an 90% on a quiz. If Ana got 36 problems right, how many questions were in the quiz?
kherson [118]

Answer:

40

Step-by-step explanation: I just guesstimated a number and divided 36 by 40 to get .9 which means 90%

3 0
3 years ago
18 girls and 12 boys on a swim team. what is the percentage of boys?​
nekit [7.7K]

Answer:

40%

Step-by-step explanation:

The first step is to add 18 girls + 12 boys, which gives you the total number of people on the swim team, 30.

Next, you divide the 12 boys by the total swim team members, so:

\frac{12}{30} = 0.4

Then, you multiply 0.4 by 100 to get the percentage:

0.4 × 100 = 40

Therefore, the swim team is made up of 40% boys, and 60% girls.

6 0
3 years ago
Read 2 more answers
5×(-2w-4) what's the answer.
maria [59]

Answer:

-10w -20

Step-by-step explanation:

5(-2w-4)

Distribute the 5

5*-2w -5*4

-10w -20

7 0
3 years ago
Read 2 more answers
5-2(4a+1)+3a=13 <br><br> A= 2/3<br> A= -2<br> A= -6/5<br> A=2
VMariaS [17]

Answer:

                   a = -2

Simplifying 5 + -2(4a + 1) + 3a = 13 Reorder the terms: 5 + -2(1 + 4a) + 3a = 13 5 + (1 * -2 + 4a * -2) + 3a = 13 5 + (-2 + -8a) + 3a = 13 Combine like terms: 5 + -2 = 3 3 + -8a + 3a = 13 Combine like terms: -8a + 3a = -5a 3 + -5a = 13 Solving 3 + -5a = 13 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -5a = 13 + -3 Combine like terms: 3 + -3 = 0 0 + -5a = 13 + -3 -5a = 13 + -3 Combine like terms: 13 + -3 = 10 -5a = 10 Divide each side by '-5'. a = -2

6 0
3 years ago
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