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2 years ago

a pile of 34 coins consists of nickels and dimes. the total value of the coins is $3.30. find the number of each type of coin.

Mathematics

1 answer:

Dvinal [7]2 years ago

5 0

It just means to multiply or divide

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What are the attributes for this shape

stich3 [128]

All of the shown choices, also every opposite angles are equal.

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3 years ago

Elevator 1 Moved Up 10 Feet From the ground level its position is labeled as +10 elevator to move down 5 feet from the ground le

pashok25 [27]

0 + 10 = 10

10-5= 5

The answer is 5

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3 years ago

Discs of a radius 4cm are cut from a rectangular plastic sheet of length 84cm and width 24 cm

Aleonysh [2.5K]

Answer: 40

Step-by-step explanation:

Given

Radius of disc $r=4\ cm$

The dimension of the sheet is $84\times 24\ cm^2$

Area of a single disc

$\Rightarrow a=\pi r^2=\frac{22}{7}\times 4^2\\\\\Rightarrow a=\frac{352}{7}\ cm^2$

Area of sheet

$\Rightarrow A=84\times 24=2016\ cm^2$

No. of discs that can be cut off the sheet are

$\Rightarrow n=\dfrac{A}{a}=\dfrac{2016}{\frac{352}{7}}=\dfrac{2016\times7}{352}\\\Rightarrow n\approx 40$

The total area of the disc is

$\Rightarrow na=40\times\frac{352}{7}=2011.428\ cm^2$

Sheet wasted

$\Rightarrow A-na=2016-2011.428=4.57\ cm^2$

7 0

2 years ago

Write an expression for the area of a triangle with a height of 2x2 units and a base of 5x2 + 4x units.

nataly862011 [7]

The expression for the area of the triangle is $5x^4+4x^3$ units

Explanation:

Given that height of the triangle is $2x^{2}$ units

The base of the triangle is $5x^{2} +4x$

<u>Area of the triangle:</u>

The area of the triangle can be determined using the formula,

$A=\frac{1}{2}bh$

where $b=5x^{2} +4x$ and $h=2x^{2}$

Substituting the above values in the formula, we get,

$A=\frac{1}{2}(5x^2+4x)(2x^2)$

Cancelling the common terms, we get,

$A=(5x^2+4x)(x^2)$

Multiplying the terms, we have,

$A=5x^4+4x^3$

Hence, the expression for the area of the triangle is $5x^4+4x^3$ units.

4 0

3 years ago

ONE QUESTION just one. Help

Semmy [17]

Answer:

0.015625

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers