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3 years ago

1. Two angles added together to produce 90 degrees a) Supplementary b) Complementary c) Right od) Vertical

Mathematics

1 answer:

Valentin [98]3 years ago

8 0

Answer: B: complementary

Step-by-step explanation: :)

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Please solve with explanation I’ve been asking all day (this is not a multiple choice question)

Anastaziya [24]

Answer:

a) $SA = 522.9~cm^2$

b) $V_{cone} = 670.2~cm^3$

c) $V_{empty} = 1340.4~cm^3$

Step-by-step explanation:

For a cone,

$SA = \pi r (L + r)$

where L = slant height

$L = \sqrt{r^2 + h^2}$

We have r = 8 cm; h = 10 cm

$L = \sqrt{(8~cm)^2 + (10~cm)^2}$

$L = \sqrt{164~cm^2}$

$SA = (\pi)(8~cm)(\sqrt{164~cm^2} + 8~cm)$

$SA = 522.9~cm^2$

$V_{cone} = \dfrac{1}{3}\pi r^2 h$

$V_{cone} = \dfrac{1}{3}(\pi)(8~cm)^2(10~cm)$

$V_{cone} = 670.2~cm^3$

$V_{cylinder} = \pi r^2 h$

empty space = volume of cylinder - volume of cone

$V_{empty} = V_{cylinder} - V_{cone}$

$V_{empty} = \pi r^2 h - \dfrac{1}{3}\pi r^2 h$

$V_{empty} = (\pi)(8~cm)^2(10~cm) - \dfrac{1}{3}(\pi)(8~cm)^2(10~cm)$

$V_{empty} = 1340.4~cm^3$

3 0

3 years ago

A. 76°<br><br> B. 72°<br><br> C. 70°<br><br> D. 12°

Crank

Answer:measurement of angle B is

$70 \: \: degrees$

<h3>Answer C is correct</h3>

Step-by-step explanation:

$6x - 2 + 5x + 18 + 2x + 8 = 180 \\ 13x + 24 = 180 \\ 13x = 180 - 24 \\ 13x = 156 \\ \frac{13x}{13} = \frac{156}{13} \\ x = 12 \: \: degrees$

7 0

3 years ago

What is the product of 7.951x 1.314

gladu [14]

Answer:

10.447614

Step-by-step explanation:

The product of 7.951x 1.314 is 10.447614.

7 0

3 years ago

What would be the correct notation for the following ray?

muminat

It would be the middle choice. The choice on the left represents a line, and the choice on the right represents a line segment.

Hope this helps!

7 0

2 years ago

Use the discriminant to find all values of b for which the question has one real solution.

Arada [10]

Use the formula 0 = b^2-4ac

0 = -b^2-4(2)(-9)

0 = -b^2+72

b^2 = 72

b = square root of 72

b = 2 real numbers

4 0

3 years ago

1. Two angles added together to produce 90 degrees a) Supplementary b) Complementary c) Right od) Vertical​

1. Two angles added together to produce 90 degrees a) Supplementary b) Complementary c) Right od) Vertical