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Neporo4naja [7]
3 years ago
7

Find the sum (7n+5)+(-2-4m)+(9m+3n)

Mathematics
1 answer:
yanalaym [24]3 years ago
3 0

Answer: 5m+10n+3

Step-by-step explanation:

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(4200 + 75) + 5 = ( ? )+ (75+5)<br> What would make it true?
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4200

Step-by-step explanation:

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Perimeter of an isosceles triangle is 90 m. If the length of the two equal sides is three fourth of the unequal side , find the
Sveta_85 [38]

Answer:

The length of the equal side is 27 meters each and that of the unequal side is 36 meters

Step-by-step explanation:

An isosceles triangle is a triangle with two sides being equal (also two equal base angles).

Let us assume the length of the two equal sides to be x meters each, and the length of the unequal side to be y meter. Since the perimeter of the triangle is 90 m, it can be expressed as:

x + x + y = 90

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But the length of the equal side is  three fourth of the unequal side, i.e x = 3/4y

Therefore:

2(3/4y) + y = 90

3/2y + y = 90

2.5y = 90

y = 90/2.5

y = 36 meters

Also x = 3/4 * 36 = 27 meters

The length of the equal side is 27 meters each and that of the unequal side is 36 meters

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3 years ago
Solve by applying the counting principle. James is choosing a Four-digit Passcode for his smartphone. How many different Passcod
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Step-by-step explanation:

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2 years ago
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Step-by-step explanation:

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