rahimasfdr0
rahimasfdr0 rahimasfdr0
  • 04-08-2020
  • Mathematics
contestada

if y is directly proportional to x and y=5 when x=2, find the value of y when x =7​

Respuesta :

S1NGH
S1NGH S1NGH
  • 04-08-2020

Answer:

y = 17.5

Step-by-step explanation:

y = kx

→ Substitute in the values

5 = 2k

→ Divide both sides by 2 to isolate k

k = 2.5

⇒ y = 2.5x

→ Substitute in x = 7

y = 2.5x ⇔ y = 2.5 × 7 ⇔ y = 17.5

Answer Link

Otras preguntas

Calculate the molar mass of NH4NO3.
Put 4/9 3/8 2/5 in order from least to greatest
The number of milligrams of a certain medicine a veterinarian gives to a dog varies directly with the weight of the dog. If the veterinarian gives a 30-pound do
I’m pretty sure the answer is 50.3 but could someone please tell me if it’s square yards or yards?
2) Emily buys a toaster during the sale for 10% off. If Ellen pays $36, what was the original price?
What is your monthly limit of expenses for renting an apartment if your annual salary is $52,485(housing should be no more than 25% of your monthly income)
Find the sum of the first 8 terms in the geometric sequence: 1, 3, 9, 27,
Write each equation in exponential form.log6*216 = 3 (the 6 is supposed to be at the bottom right of log)
Character sketch of Rowley Jefferson
in the giver describe the incident with the apple​