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3 years ago

8

If A is directly proportional to C and B is directly proportional to C, prove that each of the following is directly proportiona

l to C.
(a) A + B

(b) A-B

(c) √AB

1 answer:

Yuliya22 [10]3 years ago

7 0

Answer:

A+B is correct answer I hope it helps you

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Help on this problem pls<br> Thanx

maw [93]

5/7 +1/3

find the common denominator for both of the fractions

common denominator is 21

mutiply by 3 for 5/7

(5)(3)/(7/(3)= 15/21

mutiply by 7 for 1/3

(1)(7)/(3)(7)= 7/21

15/21+7/21

add the numerators

15+7= 22

denominator stays the same -21

Answer:

22/21 or 1 1/21

3 0

3 years ago

The hydra was a one-headed monster but when iris cut off ,2 heads grow back in its place. If a hero tried to conquer it by cutti

Cerrena [4.2K]

Answer:

3 days: 8 heads.

10 days: 1024 heads.

Step-by-step explanation:

If each time the hero cuts off all the heads, then the amount doubles each time. This can also be represented using powers of 2, with 2^n, where n is the number of days.

2^1 = 2, so two heads the first time he cuts it.

2^2 = 4, so four heads the second time he cuts it.

With three, 2^3 is 8 so there are 8 heads.

With ten, 2^10 is 1024 so there are 1024 heads.

4 0

3 years ago

Help I give brainly

Wittaler [7]

Answer:

$\huge\boxed{\sf x = 26}$

Step-by-step explanation:

The acute angles of a right-angled triangle other than the right angle always add up to 90 degrees.

<u>So, we get:</u>

(48 - x) + (3x - 10) = 90

48 - x + 3x - 10 = 90

-x + 3x - 10 + 48 = 90

2x + 38 = 90

2x = 90 - 38

2x = 52

Divide both sides by 2

x = 52 / 2

x = 26

$\rule[225]{225}{2}$

Hope this helped!

<h3>~AH1807</h3>

8 0

2 years ago

Find the area of the shaded sector of the circle

attashe74 [19]

Answer:

48pi or ~150.8

Step-by-step explanation:

ok so area = pi * r^2

r = 8

8^2 = 64pi

so 64/4 = 16

16*3 quarters shaded = 48

48pi is the answer

48pi or ~150.8

4 0

3 years ago

Solve the following equation-7x-4y=-4 -9x-5y=-6

maks197457 [2]

Answer:

$\boxed{x = 4~~and~~ y = -6}$

.

Step-by-step explanation:

-7x - 4y = -4 (times 5) -35x - 20y = -20

-9x - 5y = -6 (times 4) -36x - 20y = -24

.

Eliminate both equations

$-35x - 20y = -20$

<u>-36x - 20y = -24 </u> <u> </u>

$x = 4$

.

Substitute the value of x to one of equations

$-7x - 4y = -4$

$-7(4) - 4y = -4$

$-28 - 4y = -4$

$-4y = - 4 + 28$

$-4y = 24$

$y = \frac{24}{-4}$

$y = -6$

3 0

3 years ago

Read 2 more answers