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solmaris [256]
3 years ago
9

Write three fraction addition problems in which the fractions have different denominators and the sum is 1

Mathematics
1 answer:
NISA [10]3 years ago
4 0
Here are three problems:
8/10 + 1/5 = 1
9/10 + 2/20 = 1
5/20 + 3/4 = 1
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Find the area of the shaded region. Round your answer to the nearest hundredth.
Ne4ueva [31]

Answer: 1696.46

Step-by-step explanation:

6 x 6 x 3.14 = 113.1

24 x 24 x 3.14 = 1809.56

113.1 - 1809.56

thus we have 1696.46

sorry had to edit some things instead of one 6 its 6 x 6 and same with 24

5 0
3 years ago
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PLEASE HELP ME<br> . Find the surface area of the hemisphere. *
kirza4 [7]

Answer:

2769.48 sq. mm

Step-by-step explanation:

The formula for the surface area of a hemisphere is 2πr^2. Using the formula(and approximating pi as 3.14) the answer of 2769.48 is reached. Approximate that however you want.

Hope this helps!

5 0
4 years ago
Traveling at 55 miles per hour, how many minutes, rounded to the nearest whole number, does it take to drive 145 miles from San
Lina20 [59]

55 miles = 1 hour

145 miles = 1/55 x 145 = 2.64 hours = 158 mins

5 0
3 years ago
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Now move points C, D, and E on the circle, and note the interior angle measurements for the quadrilateral in the table below. No
labwork [276]

Answer:

Interior angle

measures of any n-gon, where n represents the

number of sides of the polygon, by multiplying

(n - 2) 180°.

Hope this helps :D

5 0
3 years ago
Add or subtract. Express simplest form 1 2/5 - (-1 2/15
Elenna [48]
Its 2 8/15 Conversion a mixed number 1 2
5
to a improper fraction: 1 2/5 = 1 2
5
= 1 · 5 + 2
5
= 5 + 2
5
= 7
5


To find new numerator:
a) Multiply the whole number 1 by the denominator 5. Whole number 1 equally 1 * 5
5
= 5
5

b) Add the answer from previous step 5 to the numerator 2. New numerator is 5 + 2 = 7
c) Write previous answer (new numerator 7) over the denominator 5.

One and two fifths is seven fifths
Conversion a mixed number -1 2
15
to a improper fraction: -1 2/15 = -1 2
15
= -1 · 15 + (-2)
15
= -15 + (-2)
15
= -17
15


To find new numerator:
a) Multiply the whole number -1 by the denominator 15. Whole number -1 equally -1 * 15
15
= -15
15

b) Add the answer from previous step -15 to the numerator 2. New numerator is -15 + 2 = -13
c) Write previous answer (new numerator -13) over the denominator 15.

Minus one and two fifteenths is minus thirteen fifteenth
Subtract: 7
5
- (-17
15
) = 7 · 3
5 · 3
- (-17)
15
= 21
15
- (-17
15
) = 21 - (-17)
15
= 38
15

The common denominator you can calculate as the least common multiple of the both denominators - LCM(5, 15) = 15. The fraction result cannot be further simplified by cancelling.
In words - seven fifths minus minus seventeen fifteenth = thirty-eight fifteenths.
6 0
4 years ago
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