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Radda [10]
3 years ago
15

rectangular piece of paper 4 cm wide length twice its width measuring 3 cm by 7 cm how many sq cm will be visible on top?

Mathematics
1 answer:
aalyn [17]3 years ago
8 0
22 square centimeters
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Pls help me not fail
nignag [31]

Answer:

D

Step-by-step explanation:

Using the Cosine rule to find AC

AC² = BC² + AB² - (2 × BC × AB × cosB )

      = 18² + 12² - ( 2 × 18 × 12 × cos75° )

      = 324 + 144 - 432cos75°

      = 468 - 111.8

      = 356.2 ( take the square root of both sides )

AC = \sqrt{356.2} ≈ 18.9

-----------------------------------------

Using the Sine rule to find ∠ A

\frac{18}{sinA} = \frac{18.9}{sin75} ( cross- multiply )

18.9 sinA = 18 sin75° ( divide both sides by 18.9 )

sinA = \frac{18sin75}{18.9} , then

∠ A = sin^{-1} ( \frac{18sin75}{18.9} ) ≈ 66.9°

4 0
3 years ago
Multiply the fractions. Write your answers in simplest form. 1/2 x 2/5
zepelin [54]
First make it that both denominators are the same.
(\frac{1}{2}  \times 5) + ( \frac{2}{5} \times 2) =  \frac{5}{10}  +  \frac{4}{10}
Then add both numerators
\frac{5}{10}  +  \frac{4}{10}  =  \frac{9}{10}
Your final answer should be
\frac{9}{10}
6 0
3 years ago
Read 2 more answers
Help with that for the crown if you cant see it then just zoom in i guess.
melamori03 [73]
5 = 50
8 = 80
because:
20:2= 10 so 1 shirt will collect 10
6 0
3 years ago
What is the slope of the line on the graph
cupoosta [38]

Answer:

The answer is 1/2. Hope that helps

Step-by-step explanation:

You count up how many times you need to. You then count right.

5 0
3 years ago
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the earth and the sun are 93,000,000 apart. if the moon is 0.27% of the distance between the sun and earth, how many miles away
Rashid [163]
The moon is 238,855 miles away!
4 0
3 years ago
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