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Alborosie
3 years ago
7

Given: y varies directly with x and has a constant rate of change of 7. When the value of y is 12, then the value of x would be

_____. 
equal to zeroless than 2equal to 7greater than 12
Mathematics
2 answers:
docker41 [41]3 years ago
7 0
Y = kx is the direct variation equation, where 'k' is the constant of variation.
12 = 7(x)
Divide both sides by 7
12/7 = x
Tems11 [23]3 years ago
7 0

Answer:

The answer in less than 2. I just had a lesson on doing these problems.

Step-by-step explanation:


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The circumference of a circle is 106.76 meters. What is the circle's diameter?
Flura [38]
C = 2*pi*r
So, C = pi*d
106.76 = pi*d
106.76/pi = d
d = ~33.98
5 0
2 years ago
Read 2 more answers
The value of a car purchased for $20,000 decreases at a rate of 12% per year. What will be the value of the car after 3 years?
DENIUS [597]

Answer:

The answer is A

Step-by-step explanation:

$20,000 • .12= $2,400

$2,400 • 3= $7,200

$20,000 - $7,200= $12,800

$12,800

4 0
3 years ago
Two mechanics worked on a car. The first mechanic worked for 15
nevsk [136]

Answer: For the sum of 130

First: $90

Second: $40

Step-by-step explanation:

We write equations for each part of this situation.

<u>The Total Charge</u>

Together they charged 1550. This means 1550 is made up of the first mechanics rate for 15 hours and the second's rate for 5 hours. Lets call the first's rate a, so he charges 15a. The second's let's call b. He charges 5b. We add them together 15a+5b=1550.

<u>The Sum of the Rates</u>

Since the first's rate is a and the second is b, we can write a+b=130 since their sum is 130.

We solve for a and b by substituting one equation into another. Solve for the variable. Then substitute the value into the equation to find the other variable.

For a+b=130, rearrange to b=130-a and substitute into 15a+5b=1550.

15a + 5 (130-a)=1550

15a+650-5a=1550

10a+650-650=1550-650

10a=900

a=$90 was charged by the first mechanic.

We substitute to find the second mechanic's rate.

90+b=130

90-90+b=130-90

b= $40 was charged by the second mechanic

5 0
3 years ago
A baseball team won 2 games. They played 17 games total. Which ratio shows how many games they lost
Contact [7]

Answer:

15/17

Step-by-step explanation:

if they won 2 games they lost 15 (17-2)  so the ratio is 15/17

6 0
3 years ago
The dimensions of a rectangular flower bed on a sketch are 4 cm by 6 cm. In real life, the shorter side of the flower bed is 5 m
Fittoniya [83]

Answer:

The correct answer is 7.5

Step-by-step explanation:

100x5=500

500÷4=125

125x6=750

750/100=7.5

The answer is 7.5 m

5 0
3 years ago
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