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Leona [35]
3 years ago
11

To solve 5/7 - 2/n = 1/21

Mathematics
1 answer:
Usimov [2.4K]3 years ago
3 0

Answer:

the answer is n=3

Step-by-step explanation:

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In a 30°-60°-90° triangle, what is the length of the longer leg when the length of the hypotenuse is 18 inches?
max2010maxim [7]

Answer:

9sqrt(3) in.

Step-by-step explanation:

The ratio of the lengths of the sides of a 30-60-90 triangle is:

short leg : long leg : hypotenuse

      1        :   sqrt(3)  :          2

If the short leg measures 1, then the hypotenuse measures 2.

The length of the hypotenuse is twice the length of the short leg.

The length of the long leg is sqrt(3) times the length of the short leg.

If the hypotenuse measures 18 in., then the short leg measures 9 in.

Then the long leg measures 9sqrt(3) in.

8 0
3 years ago
Jack rolls a number cube twice. What is the probability that the sum of the 2 rolls is less than 8 given that the first roll is
disa [49]
If the first roll is a 4, the possibilities to add less than 8 are that the second cube roll is 1, 2 or 3.

These are 3 different events out of 6 possilbe ones, which is 3 / 6 = 1 / 2; i.e. half of times.

Then the answer is the first option: 1 / 2
8 0
3 years ago
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A rectangular hat box has a value of 5,184 cubic inches. The box is 2feet Long by 18in wide. What is the hat box’s height?
Hatshy [7]
D would be the correct answer. Post brainliest if this helped plz :)
6 0
3 years ago
Find the area of the shaded region.
andriy [413]
8x5 = 40
3x2 = 6

40 - 6 = 34

answer:
area of shaded = 34
3 0
3 years ago
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How do you add fractions and whole numbers together? For example 1/4+2
grigory [225]

Answer:

2.25 or 2 1/4

Step-by-step explanation:

Easy. you add them like regular numbers. 1/4 + 2 = 0.25 + 2 =2.25 and/or 2 1/4

8 0
3 years ago
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