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3 years ago

What is the constant of proportionality in the equation y = 2.5x?

Mathematics

2 answers:

Komok [63]3 years ago

5 0

Answer:

Step-by-step explanation:

well, in the equation y = kx

the constant or proportionality is k.

So, what do you think?

posledela3 years ago

3 0

Answer:

2.5

Step-by-step explanation:

I did this

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The simple interest I on an investment of P dollars at an interest rate r for t years is given by I=Prt. Find the time it would

Darina [25.2K]

we know that

$I=Prt$

where

I is the amount in interest

P is the investment

r is the interest rate

t is the time in years

Solve for t

$t=I/(Pr)$

we have

$I=\$1,400\\ P=\$27,000\\ r=4.2\%=0.042$

substitute

$t=1,400/(27,000*0.042)=1.23\ years$

therefore

<u>the answer is</u>

$1.23\ years$

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4 years ago

Find x<br><br> -x = 7x - 56

solmaris [256]

Answer:

the answer is 7

Step-by-step explanation:

Add the same term to both sides of the equation

-x=7x-56

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3 years ago

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Andru [333]

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4 years ago

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a teacher had 21 red pens. if the ratio of red pens to blue pens owned was 3:1 how many pens did she have in total

Mariulka [41]

If the ratio of red to blue pens is 3:1, we can find the amount of blue pens by multiplying by 1/3, to get 21*1/3=7. There are 21 red pens and 7 blue pens, so there are 21+7=28 pens total.

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3 years ago

There were 30 cookies in a jar. Eileen divided the cookies into 12 equal shares. How many cookies were there in each share?

Sedbober [7]

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4 years ago