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3 years ago

6

Triangle ABC has perimeter 22 cm.

1 answer:

Serggg [28]3 years ago

3 0

Answer:

Step-by-step explanation:

A = 8 cm

B = 5 cm

C = 22 - 8 - 5 = 9 cm

Use the Pythagreom Theroem (a^2 + b^2 = c^2) if the two sides are equal to one another than it is a right triangle.

8^2 + 5^2 = 9^2

64 + 25 = 81

89 = 81

89 does not equal 81, so this is not a right triangle.

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A copier prints 80 pages in 5 minutes.

DochEvi [55]

The correct answer is D, 16 pages per minute. A unit rate is a ratio of something to one; in this case, the ratio is 16:1, or 16 pages to 1 minute. To get the unit rate for this problem, divide both numbers by 5 to get how many pages will be printed per 1 minute. 80/5 = 16, so the copier prints 16 pages in 1 minute. Answer choices A and B are not unit rates, and answer choice C is the incorrect unit rate.

Hope this helps!

7 0

3 years ago

Find the area under the curve y = 27/x3 from x = 1 to x = t. Evaluate the area under this curve for t = 10, t = 100, and t = 100

Darina [25.2K]

Answer:

Step-by-step explanation:

given is a function as

$y=\frac{27}{x^3}$

We are to find the area form x=1 to x=t

The curve from x=1 lies in the I quadratnt.

So area above x axis is to be calculated

Area = $\int\limits^t_1 {\frac{27}{x^3} } \, dx \\=\frac{-27}{2x^2} \\= \frac{-27}{2t^2}-\frac{-27}{2}\\=\frac{27}{2}(1-\frac{1}{t^2} )$

a) When t =10,

area = $\frac{27}{2} (1-\frac{1}{10^2} )\\= 13.365$

b) t=100

area = $\frac{27}{2} (1-\frac{1}{100^2} )\\= 13.49865$

c) t=10000

area = $\frac{27}{2} (1-\frac{1}{10000^2} )\\= 13.5$

6 0

3 years ago

Between which two consecutive whole numbers does \sqrt{78} 78 lie? Fill out the sentence below to justify your answer and use

Artyom0805 [142]

Answer:

A. 8 and 9

Step-by-step explanation:

Between which two consecutive whole numbers does √ 78 lie?

a.

8 and 9

b.

6 and 7

c.

9 and 10

d.

7 and 8

A. 8 and 9

8^2 = 8 × 8 = 64

9^2 = 9 × 9 = 81

B. 6 and 7

6^2 = 6 × 6 = 36

7^2 = 7 × 7 = 49

C. 9 and 12

9^2 = 9 × 9 = 81

12^2 = 12 × 12 = 144

D. 7 and 8

7^2 = 7 × 7 = 49

8^2 = 8 × 8 = 64

The correct answer is A. 8 and 9

6 0

3 years ago

How to factor10x^2+89x-9

hodyreva [135]

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4 years ago

Read 2 more answers

I need help. Include work plz

Dvinal [7]

Answer:

Set Y has the smaller mean. Mean means average.

Step-by-step explanation:

Set X: 20.45+28+22.25+16.5+13+18.05=118.25 divide that by 6. 118.25/6= 19.71

Set Y: 21+6+5+24+9+40= 95 divide that by 6. 95/6= 15.83

6 0

3 years ago