Ask question

Ask question

All categories

2 years ago

14

A box contains $8.00 in nickels, dimes, and quarters. There are three times as many nickels as quarters, and the number of dimes

is 4 less than the number of nickels. How many of each coin are there?

1 answer:

IgorLugansk [536]2 years ago

3 0

Answer:

There are 12 quarters, 36 nickels and 32 dimes.

Step-by-step explanation:

You might be interested in

Find the slope of the line passing through the two points.

GalinKa [24]

The fromula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

a) (-1, -8), (-7, -4)

substitute

$m=\dfrac{-4-(-8)}{-7-(-1)}=\dfrac{-4+8}{-7+1}=\dfrac{4}{-6}=-\dfrac{2}{3}$

b) (2.1, 3.8), (3.1, 7.6)

substitute

$m=\dfrac{7.6-3.8}{3.1-2.1}=\dfrac{3.8}{1}=3.8$

4 0

2 years ago

What is this i'm very confused

snow_tiger [21]

Answer:

That's the symbol for pi

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Convert to the given unit.

kondor19780726 [428]

Using the relation 1 in = 0.0277778 yd:

324 in * (0.0277778 yd) = 9 yd.

Among the choices, the correct answer would be A. 9 yd.

8 0

3 years ago

Find the x intercepts of the parabola with vertex (4,75) and y intercept (0,27)

user100 [1]

The equation for a parabola with vertex $(h, k)$ is
$y=a(x-h)^{2}+k$

We plug in:
$y=a(x-4)^{2}+75$

We find $a$ by plugging in the point $(0, 27)$ :
$27=a(0-4)^{2}+75$
$\Rightarrow 27=a(-4)^{2}+75$
$\Rightarrow 27=16a+75$
$\Rightarrow 16a=-48$
$\Rightarrow a=-3$

So our equation is
$y=-3(x-4)^{2}+75$

To find x-intercepts, we set $y=0$ :
$-3(x-4)^{2}+75=0$
$\Rightarrow -3(x-4)^{2}=-75$
$\Rightarrow (x-4)^{2}=25$
$\Rightarrow x-4=5, -5$
$\Rightarrow x=9, -1$

So the x-intercepts are 9 and -1.

8 0

3 years ago

Michelle paid $3.00 per shirt. When she sells each shirt, she adds 150% markup to the price she paid for the shirt. What is the

Bogdan [553]

Answer:

$8.50 per shirt

Step-by-step explanation:

If the shirt was $3 originally, and they added 150% markup, 100% of 3 is 3.

so a 100% markup of a $3 shirt would be 6 dollars.

But since she marked it up 150%, you have to know 50% of $3.

50% of something is half, so

3 / 2 = 1.5

so ontop of the $3 extra, she adds $1.5, so

3 + 3 + 1.5 = 8.5

Michelle will sell the shirts for $8.50 each

7 0

2 years ago