All categories

2 years ago

100 points / please help, im lost

Mathematics

2 answers:

Yakvenalex [24]2 years ago

8 0

Answer:

12:15 is NOT proportional to 3:4

Step-by-step explanation:

7.5:10 is proportional to 3:4 because 3×2.5=7.5, and 4×2.5=10.

39:52 is proportional to 3:4 because 3×13=39, and 4×13=52

45:60 is proportional to 3:4 because 3x15=45, and 4×15=60

12:15 is not proportional to 3:4 because while you can multiply 3x4=12, you can not multiply 4×4 to get 15, you get 16 instead.

TEA [102]2 years ago

5 0

the answer to your question is D.12:15

You might be interested in

What is the mass in kilograms of a 100-lb person on earth ?

maksim [4K]

The answer would be 45.3592 killograms

4 0

3 years ago

Help me!!! solve the inequality!! 8 ≤ x < 6

choli [55]

Hello! the answer to this inequality is no solutions, since there are no values of x for which this can be true.

4 0

2 years ago

Alesha went to the movies. A popcorn is $3 more than a soda. She purchased 1 popcorn and 2 sodas. She spent $21. How much is a p

Blizzard [7]

Answer: a popcorn is $9

Step-by-step explanation:

soda is $6

8 0

1 year ago

Which ordered pair in the form (x, y) is a solution of this equation?

laiz [17]

Answer:

Substitute the x and y values from the ordered pairs into the equation, one by one, until both sides of the equation are equal.

Step-by-step explanation:

A. (-2,-3)

3 * (-2) - 4 * (-3) = 21

-6 + 12 = 21

6 = 21 not equal

B. (0,7)

3 * 0 - 4 * 7 = 21

0 - 28 = 21

- 28 = 21 not equal

C. (7,0)

3 * 7 - 4 * 0 = 21

21 - 0 = 21

21 = 21 equal

6 0

2 years ago

What is the rate of change between (29,9) and (33,10)?

Tema [17]

Answer:

$\frac{1}{4}$

Step-by-step explanation:

The rate of change is a measure of the slope

Calculate the slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (29, 9) and (x₂, y₂ ) = (33, 10)

m = $\frac{10-9}{33-29}$ = $\frac{1}{4}$ ← rate of change

6 0

3 years ago