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worty [1.4K]
3 years ago
12

What is the value of 0.75 - 0.6? write your answer as a fraction in lowest terms.​

Mathematics
2 answers:
zimovet [89]3 years ago
8 0

Answer:

3/20

Step-by-step explanation:

0.75= 75/100

0.6= 60/100

75/100- 60/100= 15/100

15/100 ---> 3/20

Hope this helps!

Over [174]3 years ago
4 0

Answer:

3/20

Step-by-step explanation:

.75 - .6 = .15

put .15 over 100 then simplify by 5 =3/20

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Nicole has 16 nickels and dimes. If the value of her coins is 1.05, how many of each coin does she have?
earnstyle [38]

Answer:

  • 11 nickels
  • 5 dimes

Step-by-step explanation:

If all were dimes, she would have $1.60, which is $0.55 more than she actually has. Replacing a dime with a nickel reduces the total by .05, so there must be .55/.05 = 11 such replacements. This is the number of nickels. The number of dimes makes up the rest of the 16 coins.

Nicole has 11 nickels and 5 dimes.

_____

You can write equations for this several ways. My personal favorite is to use a single variable to represent the number of highest-value coin: d = number of dimes. Then the number of nickels is 16-d and the total value is ...

  0.10d + 0.05(16 -d) = 1.05

  0.05d + 0.80 = 1.05 . . . eliminate parentheses, collect terms

  0.05d = 0.25 . . . . . . . . . subtract 0.80

  d = 0.25/0.05 = 5 . . . . . number of dimes

  16-d = 16-5 = 11 . . . . . . . .number of nickels

__

If you let the variable match the number of nickels, the solution looks a lot like the one described in words, above.

  0.05n + 0.10(16 -n) = 1.05

  -0.05n +1.60 = 1.05

  -0.05n = -0.55 . . . . . . . subtract 1.60

  n = -0.55/-0.05 = 11 . . . number of nickels

  16-n = 16-11 = 5 . . . . . . . number of dimes

__

Comparing these two solutions, you see that we work with negative numbers in the second solution. The reason for choosing the variable to represent the higher-value coin is to keep the numbers positive, as they are in the first solution. (It's no big deal, if you're not bothered by negative number arithmetic.)

3 0
3 years ago
Solve the equation<br>12E − 4 = 0
Scorpion4ik [409]
This could get complicated.  Please try to follow my steps carefully:

Begin by writing the equation to be solved:    <u>12E - 4 = 0</u>

Add 4 to each side of the equation:  12E = 4

Divide each side by 12:                      E = 4/12 = 1/3 .
7 0
3 years ago
Find the volume of the rectangular pyramid below.
VMariaS [17]

Answer:

315 yd cubed

Step-by-step explanation:

To find the volume of the pyramid, we first need to consult the equation below. Thebase is for the rectangular portion, then after multiplied by the height it is divided by 3 to get the pyramid.

\frac{1}{3} (B * H )

To get the base, we multiply the length by the width.

21 * 9 = 189

189 * 5 = 945

945 divided by 3 = 315

5 0
3 years ago
Read 2 more answers
No points no points no points
k0ka [10]

whats the question? if there no question we cant help you.

4 0
3 years ago
Read 2 more answers
Write an equation of the line that is perpendicular to y=-3x+1 and passes through point (5,3).
Snezhnost [94]

Answer: There are two formulas that we will use the first one is the y=m x+b and the second one is finding the perpendicular line.

Step-by-step explanation:

the first one is

y=m x+b

y= 3 x -12

the second one is

first find the negative reciprocal of the slope of the original line and use the point slope formula y- y,= m(x - x1) to find the line perpendicular to

Y= 3 x 1

X= 5

8 0
2 years ago
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