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3 years ago

One angle of a right triangle measures 60 degrees what is the measure of the acute angle?

Mathematics

1 answer:

Alchen [17]3 years ago

4 0

Answer:

the acute angle measures 30 degrees

Step-by-step explanation:

the right angle is 90. 90 and 60 is 150. 180 minis 150 is 30.

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PSYCHO15rus [73]

Lower, initial, and at her starting weight

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4 years ago

Simplify (4−b)(5b2+5b−4)

astraxan [27]

Answer:15b^2-5b^3+24b-16

Step-by-step explanation:

(4-b)(5b^2+5b-4)

Open the brackets

20b^2+20b-16-5b^3-5b^2+4b

Collect like terms

20b^2-5b^2-5b^3+20b+4b-16

15b^2-5b^3+24b-16

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3 years ago

Alinara [238K]

Answer:

just one.. so A

Step-by-step explanation:

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3 years ago

The ratio of girls and boys in a swimming club was 2:5 .There we’re 20 girls.How many boys were there at the club?

nekit [7.7K]

Answer:

Step-by-step explanation:

divide 20 girls by 2 girls to get 10.

multiply 5 by 10 to get 50 boys.

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3 years ago

A rectangular pool is to be built on a lot that measures 20 m by 12 m. A wooden deck of uniform width, equal to the area of the

frutty [35]

The length and breadth(width) of the pool are

$l\approx15.7m\text{ and }b\approx7.7m$

Let

$l=\text{length of the side of the pool}\\b=\text{breadth of the pool side}\\w=\text{the width of the strip of deck surrounding the pool}$

From the question, we can build the following relationships

$l+2w=20\\b+2w=12$

subtracting to eliminate $w$ (we do not even need it!)

$l-b=8\\b=l-8$

we can also build another relationship from the question. Since the area of the strip equals the area of the pool:

$lb+lb=2lb=20\times 12\\lb=120$

We have two unknowns, $l$ and $b$ . Eliminate $b$

$lb=120\\l(l-8)=120\\l^2-8l-120=0$

If we solve the quadratic equation for $l$ , we get

$l=4+2\sqrt{34}\approx 15.7m$

and

$b=l-8\\b=(4+2\sqrt{34})-8\\b=2\sqrt{34}-4\approx7.7m$

The length and breadth(width) of the pool are

$l\approx15.7m\text{ and }b\approx7.7m$

Learn more about area here: brainly.com/question/1447350

7 0

2 years ago