All categories

3 years ago

What is the value of p in the proportion below?

Mathematics

1 answer:

kolezko [41]3 years ago

8 0

Answer:

20/6=p/12

cross multiply

20*12=6p

240=6p

divide both sides by 6

p=40

You might be interested in

Evaluate the expression without using a calculator. In1/e^7

Sati [7]

Answer:

-7

Step-by-step explanation:

$ln(\frac{1}{e^7})\\=ln(e^{-7})\\ =-7ln(e)\\=-7$

8 0

3 years ago

Select the correct answer. Which equation represents circle C? A. (x − 4)2 + (y + 1)2 = 9

____ [38]

Answer:

(lx-4

Step-by-step explanation:

7 0

3 years ago

A dog weighs two pounds less than three times the weight of a cat. The dog also weights twenty-two more pounds than the cat. Wri

8090 [49]

Answer:

Weight of dog: 34 pounds,

Weight of cat: 12 pounds.

Step-by-step explanation:

Let d represent weight of dog and c represent weight of cat.

We have been given that a dog weighs two pounds less than three times the weight of a cat.

3 times weight of cat: $3c$

We can represent the given information in an equation as:

$d=3c-2...(1)$

We are also told that the dog also weights twenty-two more pounds than the cat. We can represent the given information in an equation as:

$d=c+22...(2)$

Equate both equations:

$3c-2=c+22$

$3c-c-2=c-c+22$

$2c-2=22$

$2c-2+2=22+2$

$2c=24$

$\frac{2c}{2}=\frac{24}{2}$

$c=12$

Therefore, the weight of cat is 12 pounds.

Substitute $c=12$ in equation (2)

$d=c+22$

$d=12+22$

$d=34$

Therefore, the weight of dog is 34 pounds.

4 0

4 years ago

How do you do this problem 2n^3-n^2-136n=0

Rzqust [24]

2n^3-n^2-136 :Equation:

Substitute 0 for n

 Simplify {20}^{3} to 8000

8000−0^2−136

 Simplify {0}^{2} to 0
8000−0−136

= 7864

5 0

3 years ago

Sharla is 8 year older than her sister, patricia . The sum of their ages is 102.Find their ages.

Alisiya [41]

Answer:

Patricia is 47 years old

Sharla is 55 years old

Step-by-step explanation:

Rewrite the first sentence as an equation: (S= Sharla) (P= Patricia)

S=P+8

Rewrite the second sentence as an equation:

S+P=102

1) Substitute P+8 as Sharla in the second equation:

P+8+P=102

2) Combine alike terms:

2P+8=102

3) Subtract 8 from both sides:

2P=94

4) Divide both sides by 2:

P=47

5) Substitute 47 as P in the First equation:

S=47+8

6) Solve:

S=55

6 0

3 years ago

Read 2 more answers