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3 years ago

15

a jar containing only nickels an dimes contains a total of 60 coins. The value of all the coins in the jar is $4.45. What is the

number of nickels and dimes in the jar?

1 answer:

andreev551 [17]3 years ago

5 0

Answer:

31 nickels and 29 dimes

Step-by-step explanation:

You might be interested in

Find the x and y intercept of the line -10x-6y=120

Ipatiy [6.2K]

ANSWER

The x intercept is

$(-12,0).$

The y intercept is
$(0, - 20).$

EXPLANATION

The equation of the given line is

$- 10x - 6y = 120$

At x-intercept
$y = 0$

We substitute this y value to obtain the corresponding x value.

This implies that,

$- 10x - 6(0)= 120$

$- 10x - 0 = 120$

$- 10x = 120$

We divide both sides by -10 to get,

$x = - 12$
The x-intercept is

$(-12,0).$

At y-intercept also,
$x = 0$

We substitute this value of x into the equation to find the corresponding y-value.

This implies that,

$- 10(0) - 6y = 120$

$- 0- 6y = 120$

$- 6y = 120$

We divide through by -6 to get,

$y = - 20$

The y-intercept is
$(0,-20).$

7 0

3 years ago

which of the following equation as that of a line, a circle, an ellipse, a parabola, or a hyperbola is xy=4

Vitek1552 [10]

Try this option:
according to the equation it is a hyperbola.
The graph of this function is attached.

7 0

3 years ago

Read 2 more answers

The ratio of men to women in a certain factory is 3 to 4. There are 216 men. How many workers are there ?

weqwewe [10]

W = 288

Total = M+W

Total =216+ 288 = 504

5 0

3 years ago

20. Carmen can buy bottles of paint for $2.00 each and boxes of colored pencils for $3.50 each. She can spend no more than

EleoNora [17]

Answer:

(a) The equality that express many bottles of paint, x, and boxes of colored pencils, y, Carmen can buy is 2 x + 3.5 y = 42

b)Three different solutions:

x = 14, y = 4 is First Solution.

x = 7, y = 8 is Second Solution.

x = 21, y = 0 is Third Solution.

Step-by-step explanation:

Here, the cost of 1 bottle of paint = $2.00 each

The cost of 1 box of colored pencils = $3.5 each

Let us assume the number of bottle of paints purchased = x

So, the cost of x bottle of paints = x ( Cost of 1 bottle of paint)

= x ($2.00) = 2 x

Also, assume the number of box of colored pencils purchased = y

So, the cost of y box of colored pencils = y ( Cost of 1 box)

= y ($3.50) = 3.5 y

Also, the total amount to be spent on art supplies = $42

So, the total amount spent on x paint bottles + y box of colored pencil

= $42

or, 2 x + 3.5 y = 42

a ) So, the equality that express many bottles of paint, x, and boxes of colored pencils, y, Carmen can buy is 2 x + 3.5 y = 42

b)Three different solutions:

When y = 4 , equation is: 2 x + 3.5(4) = 42

or, 2 x = 42 - 14 = 28, or x = 28/2 = 14

So, x = 14, y = 4 is First Solution.

When y = 8 , equation is: 2 x + 3.5(8) = 42

or, 2 x = 42 - 28 = 14, or x = 14/2 = 7

So, x = 7, y = 8 is Second Solution.

When y = 0 , equation is: 2 x + 3.5(0) = 42

or, 2 x = 42 , or x = 42/2 = 21

So, x = 21, y = 0 is Third Solution.

7 0

3 years ago

Been trying to get this one answered for months, will make the first one to answer a brainliest :D Please explain how you did it

Nikitich [7]

Answer:

$\frac{2}{7}$

Step-by-step explanation:

In order to find the slope of a line you must find where the points intersect, use the formula for slope, substitute values, and simplify if needed.

In this case we were already given the points for slope:

$P1=(-4,-4) = (x1,y1)$

$P2=(-2,3)=(x2,y2)$

Slope formula:

$slope = \frac{y2-y1}{x2-x1}$

Now substitute:

$\frac{-2--4}{3--4}$

Solve using KCC: (Keep, Change, Change)

$-2+4=2$

$3+4=7$

= $\frac{2}{7}$

Because the slope isn't a negative you do not need to simplify the answer.

Hope this helps.

8 0

3 years ago