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Crazy boy [7]
3 years ago
11

How many teams does the dentist sell each mounth

Mathematics
1 answer:
charle [14.2K]3 years ago
6 0

Answer:

Toothbrushes: 100

Floss: 1050

Step-by-step explanation:

to find the number of toothbrushes, you multiply 50*20....to get the floss you multiply 15*70


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Help? im confused plss!<br> Find the area of the regular polygon with the given radius or apothem
Snezhnost [94]

Answer:

  50 cm²

Step-by-step explanation:

Given that the regular polygon is a square, there are multiple ways you can jump directly to the answer. Perhaps the simplest is to use the formula for the area of a rhombus:

  A = 1/2(d1)(d2)

where d1 and d2 are the lengths of the diagonals. Here, we see that half the diagonal is 5 cm, so the area is ...

  A = (1/2)(10 cm)(10 cm) = 50 cm² . . . . area of the polygon

__

<em>Alternate solution</em>

If you want to use the radius and the number of sides in a formula, you can consider the area of each triangle formed by radii and a side. That triangle has area ...

  A = 1/2r²sin(α)

where r is the radius and α is the central angle. For an n-sided polygon, the area is the sum of n of these triangles, and the central angle is 360°/n. Then the polygon area is ...

  A = n/2·r²·sin(360°/n)

For n = 4 and r = 5 cm, the area is ...

  A = (4/2)(5 cm)²(sin(360°/4)) = 2(5 cm)²(1) = 50 cm² . . . . area of square

_____

<em>Additional comment</em>

The formula is somewhat different if you start with the length of the apothem. One way to find the area is using the above formula and the relation between the radius and apothem:

  r = a·sec(180°/n)

Another formula uses the apothem directly:

  A = n·a²·tan(180°/n)

8 0
2 years ago
7.) Mya has ballet lessons every sixth day and swimming lessons every fourth day. Today she has both lessons. In how many days w
mr_godi [17]

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>

7 0
3 years ago
163,160,157,... find the 42nd term
UNO [17]

Answer:

It's 40

Step-by-step explanation:

Arithmetic Sequence.

Common Difference:

160−163=−3

157−160=−3

d=−3

Explicit Formula:

an=a1+(n−1)d

​

a42​=163+(41)(−3)

a42 = 40

6 0
3 years ago
The bells are adding a new room to their house. The room will be a cube with volume of 5,832 ft^3. They are going to put in hard
gtnhenbr [62]
1620 because 5832 is 18 to the 3rd power which means that because it is a cube 18 to the second power will be able to find the base which 324 ft^2, multiplying that by 5 dollar gets 1,620 dollars
4 0
3 years ago
6. Steve is packing sacks for treats at a party. Every sack is exactly the same. Steve has 42 candy bars and 126 lollipops. a. W
Sergeu [11.5K]

Answer:

Greatest sack = 42

1 candy bar and 3 lollipops

<em></em>

Step-by-step explanation:

Represent Candy bars with C and Lollipops with L

C = 42

L= 126

Solving (a): Greatest number of treat sacks

To solve this, we simply calculate the GCF of C and L

42 = 2^1 * 3^1 * 7^1

126 = 2^1 * 3^2 * 7^1

Hence, the GCF is

GCF = 2^1 * 3^1 * 7^1

GCF = 42

Hence, greatest number of sack is 42

Solving (b): Number of treat in each sack.

To do this, we simply divide the number of C and L by the calculated GCF

For C:

Treats = \frac{C}{GCF}

Treats = \frac{42}{42}

Treats = 1

For L:

Treats = \frac{L}{GCF}

Treats = \frac{126}{42}

Treats = 3

<em>Hence, 1 candy bar and 3 lollipops</em>

8 0
2 years ago
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