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3 years ago

15

Carlito has only nickels and dimes. If he has a total of 13 coins and the total value of the coins is $1.05, how many dimes does

he have?

1 answer:

Mamont248 [21]3 years ago

7 0

He has eight dimes and five nickles.

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3 different numbers which are all equivalent to 10

Zolol [24]

Answer:

2 4 6

Step-by-step explanation:

3 0

3 years ago

Plz help me!!!!!!!!!

Over [174]

Answer: $\bold{\dfrac{4\pm \sqrt{6}}{2}}$

<u>Step-by-step explanation:</u>

$\dfrac{3}{y-2}-2=\dfrac{1}{y-1}\\\\\\\text{Multiply by the LCD (y-2)(y-1) to clear the denominator:}\\\\\dfrac{3}{y-2}(y-2)(y-1)-2(y-2)(y-1)=\dfrac{1}{y-1}(y-2)(y-1)\\\\\\3(y-1)-2(y-2)(y-1)=1(y-2)\\\\3y-3-2(y^2-3y+2)=y-2\\\\3y-3-2y^2+6y-4=y-2\\\\-2y^2+9y-7=y-2\\\\0=2y^2-8y+5\quad \rightarrow \quad a=2,\ b=-8,\ c=5\\\\\\\text{Quadratic formula is: }x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\\x=\dfrac{-(-8)\pm \sqrt{(-8)^2-4(2)(5)}}{2(2)}\\\\\\.\ =\dfrac{8\pm \sqrt{64-40}}{2(2)}$

$.\ =\dfrac{8\pm \sqrt{24}}{2(2)}\\\\\\.\ =\dfrac{8\pm 2\sqrt{6}}{2(2)}\\\\\\.\ =\dfrac{4\pm \sqrt{6}}{2}$

7 0

2 years ago

I WILL GIVE YOU A BRILLIANT

Arada [10]

Answer:

270

Step-by-step explanation:

I am not sure if i am correct but i think you should divide 6,480 by 24 which is 270

4 0

3 years ago

Read 2 more answers

A direct variation function contains the points (–8, –6) and (12, 9). Which equation represents the function?

mamaluj [8]

Answer:

Option C. $y=(3/4)x$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

so

Find the value of the constant k

For the point (-8,-6)

$k=y/x=(-6/-8)=3/4$

For the point (12,9)

$k=y/x=(9/12)=3/4$

<u><em>Note</em></u> A single point was required to find the constant k (because the line passes through the origin)

The equation is equal to

$y=(3/4)x$

7 0

3 years ago

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20%of what number is 80?

prisoha [69]

20% times n = 80

.20 n = 80

divide both sides by .2

n = 80/.2

n= 400

Answer: 400

8 0

2 years ago

Read 2 more answers