3 years ago

Which of the following expressions is equal to 3x2 + 27 ?

Mathematics

1 answer:

djverab [1.8K]3 years ago

6 0

Step-by-step explanation:

The answer is provided in the options. The answer should have been A, if the question was 3x²-27.

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The distance from the center of a compact disc to the edge of the disc is 6 centimeters. What is the area of the compact disc? A

PSYCHO15rus [73]

The Correct Answer Is B.36 square centimeters
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4 0

3 years ago

If x^2=20 what is the value of x will give brainliest for answer

Schach [20]

Answer:

x² - 20 = 0

Using the quadratic formula

$x = \frac{ - b± \sqrt{( {b})^{2} - 4ac } }{2a}$

a = 1 b = 0 c = -20

So we have

$x = \frac{ - 0 ± \sqrt{ {0}^{2} - 4(1)( -20)} }{2(1)} \\ \\ x = \frac{± \sqrt{80} }{2} \\ \\ x = \frac{±4 \sqrt{5} }{2} \\ \\ \\ x = ±2 \sqrt{5} \\ \\ \\ x = 2 \sqrt{5} \: \: \: or \: \: \: x = - 2 \sqrt{5}$

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3 years ago

A paper company needs to ship paper to a large printing business. The paper will be shipped in small boxes and large boxes. Each

balu736 [363]

Answer:

35-=13 boxes ; 65-9 boxes

Step-by-step explanation:

35 x X+ 65 (22-x)=1040

35x+1430-65x=1040

1430-30x=1040

30x=390

x =390/30=13

6 0

3 years ago

A race is 25 miles long. There is a water station every 1 1/4 miles along the race route. How many water stations are needed for

Vikentia [17]

Answer:

Step-by-step explanation:

21 water stations

Step-by-step explanation:

From the question, we are informed that a marathon is 26.2 miles long and that there is a water station every 1 1/4miles along the race route and at the finish line.

To get the number of water stations that are needed for this marathon, we divide 26.2 miles by 1 1/4miles. This will be:

= 26.2miles/1 1/4 miles

= 26.2 miles/1.25 miles

= 20.96

= 21 water stations

8 0

3 years ago

The question is below, please help

Alisiya [41]

Im gonna go ahead and say it is 25

pls let me be right

7 0

3 years ago