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myrzilka [38]
2 years ago
5

On her first turn, Marlene scored 90 points playing a board game. On her next turn, she

Mathematics
1 answer:
Viefleur [7K]2 years ago
3 0

Answer:

85

Step-by-step explanation:

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If x varies directly with y and y is 10 when x is 8, what is x when y is 18?
swat32
Knowing that x varies directly with y, we know the basic skeleton of the equation is y = mx. 

To find m, plug in the known coordinate (8,10), where the x-coordinate is 8 and the y-coordinate is 10.
y=mx \\ 10=m8 \\ (10)/8=(8m)/8 \\ m= \frac{10}{8} = \frac{5}{4}

Then, plug in m to the equation to get y = (5/4)x.

Finally, plug in the y-coordinate 18 to the equation and solve for x!
y= \frac{5}{4}x \\ 18= \frac{5}{4}x \\  \frac{4}{5}(18)=( \frac{5}{4}x) \frac{4}{5} \\ x= \frac{4*18}{5}  \\  x= \frac{72}{5}

Your exact answer is x = 72/5. However, if your teacher prefers decimals, then x = 14.4

Hope this helps!
5 0
3 years ago
Read 2 more answers
find 2 numbers the exact answer is between, for example 3 x 567. how do you do this problem and what is the answer?
kramer
Here is an example I did of the problem hope it helps let me know if you need anything else~!

~<span>Cecildoesscience </span>

6 0
3 years ago
What is 5/98 in distributive property
miv72 [106K]
The answer is 5÷90+8 and that's the answer does the answer
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3 years ago
PLZ ANSWER NUMBERS 8 AND 9. SHOWS YOUR WORK TOO!!!!
ASHA 777 [7]
8. 3x-4>38
3x>38+4
3x>42
x>42/3
x>14
So the answer is A. x>14

9. It's A. Two less than four times a number is 12. Because 4x (four times) and also it says 2 less than 4 times a number...
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3 years ago
In a school, the ratio of soccer players to volleyball players is 4 : 1. The number of soccer players is how many times the numb
soldier1979 [14.2K]

Your question appears to be phrased incorrectly.  If the ratio of soccer players to football players is 4:1 then for every 1 football player there are 4 soccer players.  For example, if there are 3 football players, there would be 12 soccer players.

The equivalent expression would be   S = 4F

The statement: "there are 4 more soccer players than football players" is not the same thing.  It simply means that we add 4 to the total of football players to find out how many soccer players there are.

The equivalent expression would be   S = F + 4

That being said:  An equivalent ratio to 4:1  would be  8:2 ,  12:3,  16:4, ...

Think of the ratio as a fraction.  4:1 = 4/1

4/1 = 8/2 = 12/3 = 16/4 ..., etc.

3 0
3 years ago
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