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Mandarinka [93]

3 years ago

10

A teacher wrote the numbers 10 ,-2, 4, 3, -1, -7 ,1 on a white board.the teacher asked which number should she write in order to

make the sum of all the numbers equal to zero?

1 answer:

storchak [24]3 years ago

3 0

Let x be that number:

x +10 -2 +4 + 3 - 1 - 7 +1 = 0

x +8 = 0

and x = - 8

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a candidate received 430,500 of the 750,000 ballots cast in an election. What percent of the vote did this candidate receive?

Evgesh-ka [11]

430,500/ 750,000 = 0.574

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3 years ago

Find the area of a circle with radius = 12 yd. Use i æ3.14.

Anarel [89]

(A = π r²)

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3 years ago

Which is the total surface area of this cone?

disa [49]

Answer:

A. 219.80 square centimeters

Step-by-step explanation:

The total surface area is given by ...

A = πr(r+s)

where r is the radius and s is the slant height. Filling in the given numbers, you get ...

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3 0

3 years ago

Determine a polynomial that represents the area of the parallelogram.<br> A=

sp2606 [1]

Answer:

4b² - 16

Step-by-step explanation:

The formula to find the area of a parallelogram equals $bh$ , where b = base and h - height. We're given the base as 2b + 4 and the height as 2b - 4.

$(2b+4)*(2b-4)=(2b+4)(2b-4)$
$(2b+4)(2b-4)=(2b)(2b)+(2b)(-4)+(4)(2b)+(4)(-4)$
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Therefore, the answer is 4b² - 16.

6 0

2 years ago

Earl E. Bird se levanta às 8h para trabalhar. Quando ele dirige a uma velocidade média de 40 mph, ele se atrasa 3 minutos. Quand

tatiyna

Answer: 48 millas por hora

Step-by-step explanation: 40t + 2= 60t - 3, es t = .25.

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2 years ago