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3 years ago

Simplify the expression.

Mathematics

2 answers:

34kurt3 years ago

8 0

A. use PEMDAS to solve the parts inside the brackets first then the multiplication of -4 and -7 to get 28

Allushta [10]3 years ago

8 0

(4 + (-8)) x (-7) -> (4-8) x (-7) ->(-4) x (-7) -> 28
The answer is A

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Which choice is the correct answer for: 2.78 * 6?

amid [387]

Hello!

2.78 * 6 = 16.68

I hope this helps, and have a nice day!

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3 years ago

Read 2 more answers

Based on the side lengths given (a, b, and o, which triangles are right triangles?

Cloud [144]

Answer:

2 & 3

Step-by-step explanation:

Pythagorean Theorem is $a^2+b^2=c^2$ .

If the values given in each option satisfy the theorem, the sides will make a right triangle.

<h3>For Option One:</h3>

$4^2+6^2=8^2\\=> 4^2=16\\=> 6^2=36\\=>8^2 =64\\16+36=64\\\boxed{52\neq 64}$

The sides would not make a right triangle.

<h3>For Option Two:</h3>

$6^2+8^2=10^2\\=> 6^2 = 36\\=> 8^2=64\\=> 10^2=100\\36+64=100\\\boxed{100=100}$

The sides would make a right triangle.

<h3>For Option Three:</h3>

$5^2+6^2=\sqrt{61}^2\\ => 5^2=25\\=>6^2=36\\=>\sqrt{61}^2=61\\ 25+36=61\\\boxed {61=61}$

The sides would make a right triangle.

<h3>For Option Four:</h3>

$6^2+9^2=12^2\\=> 6^2=36\\=>9^2=81\\=>12^2=144\\36+81=144\\\boxed{117\neq 144}$

The sides would not make a right triangle.

The correct answer should be options two and three.

6 0

2 years ago

What is the unit rate of 360 miles travled on 12 gallons of gasoline

svetlana [45]

30 miles/ 1 gallon
30 miles per gallon
30/1

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2 years ago

A crew is made up of 8 men; the rest are women. If 32 % of the crew are men, how many people are in the crew?

iVinArrow [24]

Answer:

There are 33 people in the crew

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2 years ago

A pennant is a shape of a triangle has a base of 12 inches and a height of 30 inches. What the area of the pennant?

Korolek [52]

Answer:

180 square inches

Step-by-step explanation:

Area, A is given by A=0.5bh where b is base and h is height. Since both of these dimensions are provided then we substitute the given figures into the formula. Substituting 12 inches for base, b and 30 inches for height, h then the area will be equivalent to

A=0.5*12*30=180 square inches.

Therefore, the area of the described triangle is 180 square inches.

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3 years ago