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sveticcg [70]
3 years ago
15

What is the value of X in the equation?

Mathematics
2 answers:
wel3 years ago
8 0

The answer would be 72. Let's look at the denominators to solve the problem. First, let's see if the denominators are equivalent or related in some type of way. 84 and 7 are related because 84 divided by 7 equals 12. Now, according to the law of proportion, the left must be equal to the right, and that concludes that in the end, the the two fractions must be equivalent. Since you have to multiply 7 by 12 to get the output of 84, multiply the top number 6 by 12 to get the answer of 72. Why I chose 72 instead of -72 is because there is already a negative sign on the right side as on the left. Another way you can do this is by cross-multiplying.

Ivan3 years ago
4 0

i think that the answer is b

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Fofino [41]
The answer would be -7w
8 0
3 years ago
I need a little help with this problem: 5k + 1 = 4k - 1
Varvara68 [4.7K]
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8 0
3 years ago
A weather report said there is a 60% chance of rain on Monday, and a 30% chance of rain on Tuesday. Based on the report, what is
sergey [27]

Answer:

The answer is 18 percent, or 9/50.

Step-by-step explanation:

We first convert the chance of rain on Monday into a fraction.

60%=60/100=3/5.

We then convert the chance of rain on Tuesday into a fraction.

30%=30/100=3/10.

Because the two events are independent(i.e. If it rains on Tuesday doesn't depend on if it rains on Monday) we multiply them together to get the probability they both happen. That chance is:

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5 0
2 years ago
Which graph represents the solution to this inequality? -1/4(12x+8)≤ -2x+11
Bond [772]

Answer:

c

Step-by-step explanation:

-3x-2\leq-2x+11

+3x       +3x

-2\leqx+11

-11     -11

-13\leqx

8 0
3 years ago
You’ve observed the following returns on Crash-n-Burn Computer’s stock over the past five years: 14 percent, –9 percent, 16 perc
MatroZZZ [7]

Answer:

a. 9%

b. 0.01445

c. 12.02%

Step-by-step explanation:

n = 5 years

Return rates = 14%, –9%, 16%, 21%, and 3%

a. Arithmetic average return

A= \frac{14-9+16+21+3}{5} \\A=9.00

b. Historical variance (to 5 decimal places)

V= \frac{\sum (X_i-A)^2}{n-1} \\V= \frac{(0.14-0.09)^2+(-0.09-0.09)^2+(0.16-0.09)^2(0.21-0.09)^2(0.03-0.09)^2}{5-1}\\ V=0.01445

c. Standard deviation.

s = \sqrt{V} \\s= \sqrt{0.01445}\\s=0.1202 = 12.02\%

8 0
3 years ago
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