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3 years ago

Madison has a collection of 220 coins. How many coins represent 5% of her

Mathematics

2 answers:

masha68 [24]3 years ago

7 0

Answer:

Step-by-step explanation:

5% of 220= 11

hope this helps

ella [17]3 years ago

4 0

Answer:

220/x=100/5

(220/x)*x=(100/5)*x - we multiply both sides of the equation by x

220=20*x - we divide both sides of the equation by (20) to get x

220/20=x

11=x

x=11.

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At midnight, the temperature was -8oF. At noon, the temperature was 23oF. Which expression represents the increase in temperatur

irinina [24]

Answer:

$23^oF-(-8^oF)$

Step-by-step explanation:

We have been given that at midnight, the temperature was $-8^oF$ . At noon, the temperature was $23^oF$ .

Since our temperature has increased to 23 degree Fahrenheit from -8 degree Fahrenheit, we can represent this increase in temperature as:

$\text{The increase in temperature}=23^oF-(-8^oF)$

Therefore, the expression $23^oF-(-8^oF)$ represents the increase in temperature.

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3 years ago

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A polygon is shown on the graph:

Elis [28]

Answer:

4 units left : subtract 4 from each x coordinate

3 units down : subtract 3 from each y coordinate

Step-by-step explanation:

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3 years ago

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In ABC with the right angle at vertex C, sin(b)= (26)/8. What is sin(a)?

Marat540 [252]

Answer:

We can use the Pythagorean theorem and properties of sines, cosines, and tangents to solve the triangle, that is, to find unknown parts in terms of known parts.

Step-by-step explanation:

Pythagorean theorem: a2 + b2 = c2.

Sines: sin A = a/c, sin B = b/c.

Cosines: cos A = b/c, cos B = a/c.

Tangents: tan A = a/b, tan B = b/a.

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3 years ago

Carlito has only nickels and dimes. If he has a total of 13 coins and the total value of the coins is $1.05, how many dimes does

Mamont248 [21]

He has eight dimes and five nickles.

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4 years ago

What is the product of -2x^3 +x -5 and x^3 -3x-4?

Katena32 [7]

Answer:

For part 1:

-2x^6 + 7x^4 + 3x^3 - 3x^2 + 11x + 20

For part 2:

Based on the foiling of both, they are equal.

Step-by-step explanation:

(-2x^3 +x -5)( x^3 -3x-4)

What we need to do is foil one by one.

I’ve attached a picture of this.

Once you foil, you add like terms.

Now for part 2, x^3 -3x-4 and -2x^3 +x -5, we do the same process.

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3 years ago