3 years ago

How can you tell by looking at a graph if there is a proportional relationship?

1 answer:

3 0

If there is a porpotional relationship then it there will be a pattern like, 7, 14, 21 etc. You can tell because the line will go straight in a perfect line and won't go at a different andle from the rest of the line.

You might be interested in

The local street cart sells bacon egg and cheese sandwiches for $2.50, and soft drinks for $0.75. The street vendor made a total

zaharov [31]

Answer:

Step-by-step explanation:

3 0

3 years ago

Write the equation in slope-intercept form, of the line described. Has the same slope as the equation y=x+3 and y-intercept (0,-

labwork [276]

Answer:

Hello :

the slope of the line when equation y = x +3 is : 1

the equation in slope-intercept is : y - (-1) = 1 (x -0)

y + 1 = x

4 0

3 years ago

What is 30% of 70? Show your work. Is this right? 30/100 = 0.3 x 70 = 21%

nadezda [96]

$30\% \ of \ 70=30\% \times 70=\frac{30}{100} \times 70=0.3 \times 70=21$
30% of 70 is 21.

Yes, it's right, but the answer is 21, not 21%.

4 0

3 years ago

Help please.......Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.

maxonik [38]

Answer:

The cost of 1 dozen doughnut is $6 and the cost of a dozen croissant is $10.

Step-by-step explanation:

We know that:

D = Cost of a dozen doughnut
C = Cost of a dozen croissant
10D + 7C = 130
6D + 4C = 76

Work:

10D + 7C = 130

6D + 4C = 76

4(10D + 7C = 130)

7(6D + 4C = 76)

40D + 28C = 520

42D + 28C = 532

40D - 42D = 520 - 532
=> -2D = -12
=> 2D = 12
=> D = 6

Now, let's substitute the value of D into the first equation.

10D + 7C = 130
=> 10(6) + 7C = 130
=> 60 + 7C = 130
=> 7C = 70
=> C = 10

Hence, the cost of 1 dozen doughnut is $6 and the cost of a dozen croissant is $10.

Hoped this helped.

$BrainiacUser1357$

4 0

3 years ago

20. Find the volume of the hemisphere in terms of pi. Round to the nearest whole number. 5 in 5 in

Vaselesa [24]

Answer:

Step-by-step explanation:

Someone come help him out

3 0

3 years ago