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3 years ago

PLEASE!! I REALLY NEED HELP WITH THIS!!!

Mathematics

1 answer:

ioda3 years ago

7 0

Do you have an example of what the "Constant of proportionality" would be for a different question?

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How can I solve this.. Need asap.. Please and thankyou❤️❤️

Elena L [17]

Divide 1500 by 5 to get one fifth of the savings. Multiply that by 12 to get yearly savings. You end up with 3600.

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2 years ago

Graph the numbers that are solutions to both inequalities below.

aleksklad [387]

Answer:

3x>12 2x/3 ≤ 6

3x>12, x = 4 2x/3, x = 2 ≤ 6

3 0

2 years ago

If you deposit $100 in a savings account that earns simple interest at a rate of 1.5% per year how much interest will you have e

Alexus [3.1K]

Equation: L=P*R*T

P=100
R=1.5%=0.015
T=5

Multiply and you get 7.5 as the interest.

7 0

3 years ago

Read 2 more answers

Hi, I need help with all of these questions! (screenshots included) Thank you! I really appreciate it.

klemol [59]

Answer:

I'm unsure about the first one, but the second one is irrational, the third one is option C, the fourth is option b, and the last one is D i believe

Step-by-step explanation:

4 0

2 years ago

Dwayne drove 18 miles to the airport to pick up his father and then returned home. On the return trip he was able to drive an av

Nesterboy [21]

Answer:

30 mph

Step-by-step explanation:

Let d = distance (in miles)

Let t = time (in hours)

Let v = average speed driving <u>to</u> the airport (in mph)

⇒ v + 15 = average speed driving <u>from</u> the airport (in mph)

Using: distance = speed x time

$\implies t=\dfrac{d}{v}$

Create two equations for the journey to and from the airport, given that the distance one way is 18 miles:

$\implies t=\dfrac{18}{v} \ \ \textsf{and} \ \ t=\dfrac{18}{v+15}$

We are told that the total driving time is 1 hour, so the sum of these expressions equals 1 hour:

$\implies \dfrac{18}{v} +\dfrac{18}{v+15}=1$

Now all we have to do is solve the equation for v:

$\implies \dfrac{18(v+15)}{v(v+15)} +\dfrac{18v}{v(v+15)}=1$

$\implies \dfrac{18(v+15)+18v}{v(v+15)}=1$

$\implies 18(v+15)+18v=v(v+15)$

$\implies 18v+270+18v=v^2+15v$

$\implies v^2-21v-270=0$

$\implies (v-30)(v+9)=0$

$\implies v=30, v=-9$

As v is positive, v = 30 only

So the average speed driving to the airport was 30 mph

(and the average speed driving from the airport was 45 mph)

8 0

1 year ago

Read 2 more answers