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dimaraw [331]
3 years ago
12

Find the area of a triangle when A=63degrees b=9feet and c=7feet

Mathematics
1 answer:
choli [55]3 years ago
5 0

Answer:28.0665 square feet

Step-by-step explanation:

b=9

c=7

angle A=63°

Area of =(bxcxsinA)/2

Area of =(9x7xsin63)/2

Area of =(9x7x0.8910)/2

Area of =(56.133)/2

Area of =28.0665

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A 9-yard roll of string costs $3.42. What is the unit price?
Karolina [17]

<em>Answer:</em>

<em>$0.38 per yard</em>

<em>Step-by-step explanation:</em>

<em>Step 1:</em>

Given; A 9-yard roll of string that costs $3.42.

Required; To find the unit price

<em>  Step 2:</em>

Convert $3.42 to cents

1 ~dollar=100~cents ~\\therefore,\\$3.42=3.42~x~100=342~cents~

<em>Step 3:</em>

<em>Find the unit price</em>

\frac{9 yard}{1 yard} =\frac{342 ~cents}{x~cents}

9x=342

\frac{9x}{9} =\frac{342}{9}

x=38~cents

<em>Convert to dollars</em>

x=\frac{38}{100}

x=0.38~per~yard

Hence the unit price is $0.38 per yard.

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2 years ago
What is the perimeter of a square with a side length of 15 inches?
nexus9112 [7]
60 in^2 will be your answer.
8 0
3 years ago
Lina has 12 coins in her purse. D of them are dimes and the rest are quarters. How many quarters does Lina have? How much money
andrey2020 [161]
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3 years ago
Sonya and Lucas walk from school to the library they walk 5 blocks south and 4 blocks west to get to the library if the school i
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We are given coordinates of the school located at a point (9,-1).

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According to coordinate axes, south is downward and west is on left side.

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And then <em>4 blocks west that mean -1 -4 = -5.</em>

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3 years ago
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