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Veronika [31]
3 years ago
14

How can you make change for a dollar using exactly 50 coins, only dimes, nickels and pennies?

Mathematics
2 answers:
UkoKoshka [18]3 years ago
5 0
40 pennies, 8 nickles 2 dimes
Hunter-Best [27]3 years ago
4 0
40 pennies
8nickles
2 dimes
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What is the surface area of the above composite object made out of two rectangular prisms?
aleksandrvk [35]

Answer:

  550 mm^2

Step-by-step explanation:

A net can be drawn as shown in the first figure attached. Each square represents 5 mm by 5 mm, so is 25 mm^2. Altogether, there are 22 of them, so the total area is ...

  (25 mm^2)·22 = 550 mm^2

The second attachment shows that net folded up to make the given figure.

_____

In the first attachment, the green shades represent the left- and right-side faces. (Darker green is left side.) The red and blue shades represent the front- and back-side faces. The white rectangles represent the top and bottom faces. The dark black lines are the cut lines. If you want to fold the figure up, the lighter lines are the fold lines.

The second attachment is just verification that all faces are accounted for and the net actually corresponds to the given figure.

4 0
3 years ago
Interoperate your solution in the context of the problem.<br> f(10)=1.75r+9
iVinArrow [24]

Answer:

Simplifying

f(r) = 5 + 1.75r

Multiply f * r

fr = 5 + 1.75r

Solving

fr = 5 + 1.75r

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'r'.

f = 5r-1 + 1.75

Simplifying

f = 5r-1 + 1.75

Reorder the terms:

f = 1.75 + 5r-1

Step-by-step explanation:

tada i think

6 0
3 years ago
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Write four numbers that each have six digits.Order the numbers from least to greatest.
DaniilM [7]

the numbers are: 100,500 ; 655,980 ; 324,000 ; 900,378

least to greatest: 100,500 ; 324,000 ; 655,980 ; 900,378

6 0
3 years ago
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tatiyna

Answer:

-x-2;  x\neq2

Step-by-step explanation:

\frac{x^2-4}{2-x}-->

\frac{(x-2)(x+2)}{(2-x)} -->

-(x+2); x CAN'T equal 2, because the denominator of the original fraction would be 0, which would make the term undefined.

4 0
3 years ago
Subtract the polynomial
disa [49]

Answer:

Step-by-step explanation:

3 0
3 years ago
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