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3 years ago

Please help i dont understand

Mathematics

1 answer:

torisob [31]3 years ago

3 0

x: 25
x + 48: 25 + 48
f(x): 73

x: 30
x + 48: 30 + 48
f(x): 78

x: 35
x + 48: 35 + 48
f(x): 83

x: 40
x + 48: 40 + 48
f(x): 88

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At George Washington High School, the ratio of graduating seniors that go on to college compared to those who do not is 7 : 4. L

wolverine [178]

Hi, thank you for posting your question here at Brainly.

This problem can be solved easily by applying ratio and proportion. In this case, the ratio between those who go to college and those who do not is 7/4. Then, when there are 28 students, you can determine the number of which who don't go to college by using the 7/4 ratio value

7/4 = 28/x
x = 16

Thus, 16 students did not go on to college.

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2 years ago

What is x if n≠m? Please help!

lorasvet [3.4K]

Answer: $x = \frac{mn(q - p)}{n-m}\\\\$

================================================

Work Shown:

Part 1

$\frac{x-m}{m} + p = \frac{x-n}{n} + q\\\\\frac{x-m}{m} - \frac{x-n}{n} = q - p\\\\\frac{n(x-m)}{mn} - \frac{m(x-n)}{mn} = q - p\\\\\frac{xn-mn}{mn} - \frac{xm-mn}{mn} = q - p\\\\\frac{xn-mn-(xm-mn)}{mn} = q - p\\\\$

Part 2

$\frac{xn-mn-xm+mn}{mn} = q - p\\\\\frac{xn-xm}{mn} = q - p\\\\\frac{x(n-m)}{mn} = q - p\\\\x(n-m) = mn(q - p)\\\\x = \frac{mn(q - p)}{n-m} \\\\$

-------------------------------

Explanations:

There are quite a bit of steps. I decided to break things into two parts.
The goal is to get x all by itself on its own side, which is why I subtracted (x-n)/n from both sides in part 1, step 2. I also subtracted p from both sides.
Afterward, I gave each fraction the LCD mn. I multiplied top and bottom of the first fraction by n/n. I did a similar operation to the second fraction, but with m instead.
From there, we distribute and simplify. The mn terms cancel on the left side numerator (second step of part 2).
The n≠m is there to prevent the denominator (n-m) from being zero. We cannot divide by zero.
If the formulas don't properly display, then you might have to refresh the page.

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3 years ago

Five less than four times a number is nine more than twice a number

Leokris [45]

5-4a=9+2a
Hope this help

7 0

3 years ago

Read 2 more answers

One-fourth of a

Whitepunk [10]

Answer:

24 bowls

Step-by-step explanation:

Its 24 bowls because 1/4 fits into one bowl. 4 bags of popcorn with fit in 4 bowls. So then 6 times 4 equals 24.

3 0

3 years ago

Braden is hiking on a mountain. At 11:00 a.M., he is at an elevation of 500 feet. At 2:00 p.M., he is at 900 feet. What is the r

kramer

Answer:

133.33ft/hr

Step-by-step explanation:

Between 11am and 2pm, he had 3hrs

Height change 900 - 500 = 400ft

400/3 = 133.33ft/hr

3 0

3 years ago