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stiv31 [10]
3 years ago
15

4. 225 is 75% of what number?

Mathematics
1 answer:
scoray [572]3 years ago
3 0

Answer:

300

Step-by-step explanation:

\frac{225}{x} = \frac{75}{100}

Since 225 is 75% of a whole, write the proportion such that 225 corresponds to 75% and x, the number we're searching for, corresponds with 100%

Cross multiply to solve and divide by 75 to isolate x:

225 x 100 = 75x

22500 = 75x

300 = x

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-5(6y + 4) + 25 = 15(2y + 5) + 73
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Answer:

y = - 143/60 = -2 23/60

Step-by-step explanation:

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2 years ago
Kalinda is 68.7 inches tall and wants to know how many inches taller she is than Terrence. If t represents Terrence's height in
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Answer:68.7 - t

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What types of problems can be solved using the GCF what types of problems can be solved using the least common multiple
melamori03 [73]
The Least Common Multiple is used to add fractions with unlike denominators:
Three things can happen:
1/3 + 1/7 - the LCM is the product of the denominators (in this case 21)
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2/9 + 5/6 - the LCM is lower than the product of the denominators (in this case it is 18)

The Greatest Common Factor is used to reduce fractions quickly:
\frac{48}{72} ÷ \frac{24}{24} = \frac{2}{3}
By using the GCF -in this case 24, I reduced the fraction in a single step.
If I kept dividing by 2/2 (not the GCF), it would take much longer:
48/72 = 24/36 = 12/18 = 6/9 and then I would still have to divide 6/9 by 3/3 to get 2/3


5 0
3 years ago
Work out the surface area of this cylinder.<br>12 cm<br>35 cm​
Tresset [83]
Im not 100% sure if it’s right but i think you do
pi x r^2 which means pi x 12^2 =452.3893421(if you round it in 2dp its 452.39)
If you need the volume then you times it by 35.
7 0
3 years ago
A marble is drawn at random from the bag. The bag contains 3 green, 4 yellow, 5 blue, and 8 pink marbles. What is the probabilit
ZanzabumX [31]
Add them all together: 3 + 4 + 5 + 8 = 20

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8/20 

Simplify this, and you will have 2/5 


Hope I could help! Let me know if there is anything else you need! 

p.s. Brainliest? I am trying to get to higher ranks and it would really help :)
3 0
3 years ago
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