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3 years ago

Letha has 7 coins in her hands totaling $0.50

Mathematics

2 answers:

vagabundo [1.1K]3 years ago

5 0

Answer:

Letha has 3 dimes and 4 nickels

Step-by-step explanation:

3 x 10 = 30 + 4 x 5 = 50 cents

monitta3 years ago

3 0

Answer:

7.50$

Step-by-step explanation:

there you go

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Height of window 0.6 feet less than 2.5 times it width height of window 4.9 feet

AURORKA [14]

Suggest you use some punctuation here: "The height of window is 0.6 feet less than 2.5 times it width. The height of window is 4.9 feet. Find the width of the window."

height of window = 4.9 feet = 2.5(width) - 0.6 feet.

simplify this equation by adding 0.6 feet to both sides of the equation:

4.9 feet + 0.6 feet = 2.5 (width); find width:

5.5 feet = 2.5 (width)

Dividing both sides of this equation by 2.5 will result in an equation for the width of the window, in feet.

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3 years ago

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12x + 3x = ___? Please explain

Paladinen [302]

Answer:15x

Step-by-step explanation:you add 12 + 3 which equals 15 and then you just carry the x over

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3 years ago

For every 9 black and white copies printed there are 2 color copies printed. If there are 200 color copies printed how many blac

alexandr402 [8]

Answer:

900 black and white copies are printed.

Step-by-step explanation:

Given:

For every 9 black and white copies printed there are 2 color copies printed.

If there are 200 color copies printed.

Now, to find the number of black and white copies are printed.

Let the number of black and white copies printed be $x.$

As given, for every 9 black and white copies printed there are 2 color copies printed.

So, 9 is equivalent to 2.

If there are 200 color copies printed.

Thus, $x$ is equivalent to 200.

Now, to solve by using cross multiplication method:

$\frac{9}{2} =\frac{x}{200}$

By cross multiplying we get:

$1800=2x$

Dividing both sides by 2 we get:

$900=x$

$x=900.$

Therefore, 900 black and white copies are printed.

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3 years ago

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3 years ago

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2. If AB = 4x + 9. BC = 5x + 2, and AC = 56, then find the value for . AB, BC. A B

inysia [295]

Answer:

AB=29; BC=27

Step-by-step explanation:

So they told us AB=4x+9 and that BC=5x+2, and AC=56 , now to help with the question you can draw this information on a number line. Now on a number you can see that basically AC=AB+BC.

So you would write it as such,,

4x+9+5x+2=56

Combine like terms

9x+11=56

Now you have to isolate the x by itself but first get rid of the 11.

9x+11-11=56-11

You would get

9x=45

Here you can divide 9 by both sides to isolate x.

9x/9=45/9

{x=5}

Now to find the value for both substitue x in the equations for both

1. AB=4x+9 where x is 5

4(5)+9 =AB

20+9 =AB

29=AB

You would do the same with BC

2. BC= 5x+2 where x is 5

5(5)+2= BC

25+2= BC

27=BC

If you want to check your answers you can just substitute x for 5 in the first equation we did where AC=AB+BC

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3 years ago