3 years ago

in how many ways can you make change for 20$ using quarters and dimes , with at least one of each coin being used ?

Mathematics

1 answer:

Alenkinab [10]3 years ago

4 0

With dimes it will take 200

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The interior angles of a triangle are 60,45and 75.the shortest side is 10cm less than the longest side, determine the perimeter

masha68 [24]

Answer:

Step-by-step explanation:

We know that the permiter is defined as

$P=L+S+M$

Where $L$ is the longest side, $S$ is the smallest and $M$ is the middle side.

If $L=x$ then, $S=x-20$ , where we need to find an expression for $M$ using the law of cosines.

$M^{2} =L^{2}+S^{2}-2 \times L \times S \times cos(60\°)\\M=\sqrt{x^{2}+(x-20)^{2}-x(x-20)}\\M=\sqrt{x^{2} +x^{2}-40x+400-x^{2}+20x}=\sqrt{x^{2}-20x+400}$

Replacing all expression, the perimeter is

$P=x+x-20+\sqrt{x^{2}-20x+400}\\P=2x-20+\sqrt{x^{2}-20x+400}$

Using a calculator, the perimeter is 20 units centimeters.

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3 years ago

Over what interval would 50% of the entire population of engine speed values fall

max2010maxim [7]

Do you have any numbers on the pop. Or speed?

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3 years ago

The total cost for a piece of land is 600000. If the land is 100 meter shorter and each meter costs 1000 more the total cost wou

Rina8888 [55]

Answer:

5,00000000

Step-by-step explanation:

6000000000

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2 years ago

1/3(6z+7.2)=0.5(8z+2)-0.4 please hurry this is for now

Crazy boy [7]

Answer:

z = - 0.78

Step-by-step explanation:

Given:

1/3(6z+7.2)=0.5(8z+2)-0.4

Open parenthesis

2z + 2.4 = (4z + 1) - 0.4

2z + 2.4 = - 1.6z - 0.4

Collect like terms

2z + 1.6z = - 0.4 - 2.4

3.6z = -2.8

z = -2.8 / 3.6

= - 0.78

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3 years ago

Ut 28, <br> –<br> 46, and 8 in order from least to greatest.

Stella [2.4K]

Answer:

-46, 8, 28

Step-by-step explanation:

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3 years ago