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3 years ago

11

2y - A / 3 equals a + 3 B / 4 solving for y

1 answer:

melamori03 [73]3 years ago

8 0

To solve for y you need to first multiply both sides by 4. This will give you: 4y - 4A / 3 = A + 3B

Next you need to multiply both sides by 3: 4y - 4A = 3A + 9B

Now you need to add 4A to both sides: 4y = 7A + 9B

Now divide both sides by 4:

Y = 7A/4 + 9B/4

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a stock was selling at $120 per share. a month later, it was selling at $150 per share. what is the percent increase?

goldfiish [28.3K]

Answer:

25%

Step-by-step explanation:

The formula to find percent increase is $100 * \frac{final-initial}{|initial|}$ . We're given the initial value as 120 and the final value as 150.

$100*\frac{150-120}{|120|}$
$100*\frac{30}{120}$
$100*\frac{1}{4}$
$100/4$
$25$

Therefore, the percent increase is 25%.

4 0

2 years ago

Fr plz help i give brainiest

xz_007 [3.2K]

Answer:

Hello Love! Answer: 8000

volume is just length x width x height

so 20 x 20 x 20 = 8000

5 0

2 years ago

Read 2 more answers

.. 600 is what percent of 150?

Roman55 [17]

Answer:

400%

Step-by-step explanation:

We can write a percent proportion:

600/x = 150/100

a:b = c:d

a and d are linked and b and c are linked. So if a is missing, you would do (b*c)/d to get a, if b was missing, you would do (a*d)/c to get b, etc.

So over here we do

(600*100)/150 = 60,000/150 = 400, so x = 400, so that means it's 400% of 150

We can also use benchmark fractions which I find much easier:

100% of 150 is 150.

So 200% of 150 is 300

So 300% of 150 is 450

And 400% of 140 is 600

Every time it increases by 100%, it also increases by 150 on the other side, which makes sense

Let me know if you have any questions.

4 0

2 years ago

caroline has $222 in her piggy bank. she adds $10 a week to her savings. javier has $148 in his piggy bank, and adds $12 a week

Afina-wow [57]

Answer:

392

Step-by-step explanation:

6 0

3 years ago

A study was done to determine the stress levels that students have while taking exams. The stress level was found to be normally

Advocard [28]

Answer: 0.1841

Step-by-step explanation:

Given: Mean : $\mu=8.2$

Standard deviation : $\sigma = 1.34$

The formula to calculate z-score is given by :_

$z=\dfrac{x-\mu}{\sigma}$

For x= 9, we have

$z=\dfrac{9-8.2}{1.34}\approx0.60$

For x= 10, we have

$z=\dfrac{10-8.2}{1.34}\approx1.34$

The P-value = $P(0.6$

$=0.9098773-0.7257469=0.1841304\approx0.1841$

Hence, the probability that at your next exam, you will have a stress level between 9 and 10 = 0.1841

3 0

3 years ago