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denis-greek [22]
3 years ago
6

Two numbers are in the ratio 7:5 and their difference is 22.Find the numbers​

Mathematics
1 answer:
omeli [17]3 years ago
4 0

Answer:

Let x and y be the two numbers. Then

yx=57  and x−y=20

Cross multiplying the proportion

5x=7y  or y=75x

So, x−y=20

x−75x=20⇒77x−5x=72x=20

⇒x=2140=70

y=75x=75×70=50

So smaller number is 50.

Check :yx=5070=57 and 70−50=20

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Help plz no wrong answers plz help me ASAP thanks!
wariber [46]

Answer:

480

Step-by-step explanation:

The probability she will roll 2 odd numbers is 12/50  (the number of odd rolls over the total).  This simplifies to 6/25

Multiply the probability times the total number of rolls to get a good estimate of the number of rolls that till be odd odd

6/25 * 2000 =480

5 0
3 years ago
The sum of the speed of two trains is 722.7 miles per hour. If the speed of the first train is 3.3 mph faster than the second tr
stellarik [79]
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7 0
2 years ago
To find 25% of a number, divide the number by
Vadim26 [7]

Answer:

To calculate 25 percent of a number, simply divide it by 4. For example, 25 percent of 12 is 12 divided by 4, or 3. 10 percent means one tenth. To calculate 10 percent of a number, simply divide it by 10 or move the decimal point one place to the left.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
f^3+11g-4hf 3 +11g−4hf, cubed, plus, 11, g, minus, 4, h when f=3f=3f, equals, 3, g=2g=2g, equals, 2 and h=7h=7h, equals, 7.
Alik [6]

Given:

The expression is:

f^3+11g-4h

The given values are f=3,\ g=2,\ h=7.

To find:

The value of the given expression for the given values.

Solution:

We have,

f^3+11g-4h

After substituting f=3,\ g=2,\ h=7, we get

f^3+11g-4h=(3)^3+11(2)-4(7)

f^3+11g-4h=27+22-28

f^3+11g-4h=49-28

f^3+11g-4h=21

Therefore, the value of the given expression is 21.

8 0
3 years ago
Jacques wants to fit a scale model of this room on an 8.5” by 11” paper. What scale factor should he use? He wants to make the s
AleksAgata [21]

Answer:

1:20 scale should be perfect

Step-by-step explanation:

8 0
3 years ago
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