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Anarel [89]
3 years ago
8

7.) Mya has ballet lessons every sixth day and swimming lessons every fourth day. Today she has both lessons. In how many days w

ill Mya have both lessons on the same day again?
8.) A backpack at the store costs $24.94. A pack of markers at the same store costs $3.82. You pay for both the backpacks and pack of markers with a $50 bill. How much change do you receive?​
Mathematics
1 answer:
mr_godi [17]3 years ago
7 0

Answer:

Step-by-step explanation:

#8

step #1: <em><u>add $24.94 with $3.82</u></em>

            24.94 + 3.82 = 28.76

 Step #2: <u><em>subtract </em></u>  

       $50 - 28.76 = <u>$21.24</u>

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It has 3 factors, p, r, and n.
8 0
2 years ago
Find the area of an octagon whose perimeter is 120 cm.
stira [4]

Answer:

The area of an octagon whose perimeter is 120 cm is 1086.4 cm^{2}

Step-by-step explanation:

An octagon is a polygon with eight sides. If the lengths of all the sides and the measurement of all the angles are equal, the octagon is called a regular octagon.

There is a predefined set of formulas for the calculation of perimeter, and area of a regular octagon.

The perimeter of an Octagon is given by

P=8a

and the area of an Octagon is given by

A=2a^{2}(1+\sqrt{2})

We know that the perimeter is 120 cm, solving for side length (a) in the perimeter formula we get

120=8a\\\frac{8a}{8}=\frac{120}{8}\\a=15

Now, we calculate the area

A=2a^{2}(1+\sqrt{2})\\A=2(15)^{2}(1+\sqrt{2})\\A=450\left(1+\sqrt{2}\right)\\A\approx 1086.4 \:cm^{2}

5 0
3 years ago
What are the missing angles? What is the relationship between the measures of supplementary angles?
goldenfox [79]

Answer:

6=100°

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7=100°

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Step-by-step explanation:

If 6 is 100°

in a straight line theres 180 degrees

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opposite 6 to 7 there are parallel corresponding angles meaning the angle opposite it will be the same. 8 with 9.

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3 years ago
From 99° to 70°f what is the percent decrease
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Step-by-step explanation:

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2 years ago
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How do I do any of this?!
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