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mixas84 [53]
2 years ago
14

Identify the constant of proportionality in the equation. 3y = 15x

Mathematics
1 answer:
sasho [114]2 years ago
3 0

Answer:

5

Step-by-step explanation:

For direct variation y=kx, where k is the constant of proportionality

We need to get the equation in this form

3y = 15x

Divide each side by 3

3y/3 =15x/3

y = 5x

The constant is 5

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728 / 26 = 28 inches....<==each section is 28 inches
6 0
2 years ago
Which of the following representations are functions?
Hitman42 [59]
The answer to this question is a and c only
7 0
2 years ago
a sign says that the price marked on all music equipment is 30% off the original price you buy an electric guitar for sale price
prohojiy [21]

The original price is $450.

<u>Step-by-step explanation:</u>

Step 1:

Given details, Discount%, D% = 30 and Selling Price, SP = $315

Step 2:

Write down formula for calculating the Original Price

Selling Price (SP) = Original Price (OP) - Discount (D)

Discount (D) = Original Price (OP) * (D%/100)

Step 3:

Substitute given values in the formula

315 = OP - D

D = OP \times30/100

D = 0.3 OP

Step 4:

Substitute value of D in the first formula

315 = OP - 0.3 OP

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Original Price, OP = 315/0.7 = $450

5 0
3 years ago
Which of the following is equal to 393,500? 0.3935 × 10 -6 39.35 × 10 -4 3.935 × 10 -5 3.935 × 10 5
SCORPION-xisa [38]

Answer:

No answer is equal to 393,500

Step-by-step explanation:

You can try to solve each question.

0.3935 × 10 -6 = -2.065

39.35 × 10 -4 = 389.5

3.935 × 10 -5 = 34.35

3.935 × 10 +5 = 44.35

None of these equal to 393,500

(Maybe I am getting things wrong I am not in a smart mood today)

4 0
3 years ago
A money bag contains ten 5-dollar notes and thirty 10-dollar notes. If a note is randomly selected from the bag, what is the pro
lapo4ka [179]
Not a 5 dollar just means a 10 dollar

probblity=desired outcomes/total possible outcomes


desired=number of 10 dollar notes or 30

total possible=10+30 or 40


the probablity is 30/40 or 3/4 or 75% that you do not select a 5 dollar note
4 0
2 years ago
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