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alisha [4.7K]
4 years ago
9

WILL MARK BRAINLIEST

Mathematics
2 answers:
kicyunya [14]4 years ago
8 0

Answer:

66 cm

Step-by-step explanation:

Let's define the circumference first.

It is the boundary of any curved geometric figure specially circle.

We are given the diameter of the circle in the diagram

The diameter is:

d = 21 cm

to find the circumference, we have to find the radius of the circle first.

As radius is half of diameter

d = r/2

= 21/2

= 10.5 cm

The formula for circumference is:

C = 2\pi r\\Putting\ the\ values\\C = 2 * \frac{22}{7}*10.5\\ C = \frac{462}{7}\\ C= 66\ cm

The circumference is 66 cm ..

irakobra [83]4 years ago
3 0

Answer:

The circumference of the circle is 66 cm

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Bob bought 24 hockey tickets for $83. Adult tickets cost $5.50, and child tickets cost $2.00. How many child tickets did he buy
Zepler [3.9K]

Answer:

14

Step-by-step explanation:

This can be solved by writing 2 equations and solving simultaneously.

Let <em><u>number of Adult tickets be A, and number of child tickets be C.</u></em>

<em><u /></em>

<u><em>"Bob bought 24 hockey tickets":</em></u>

A+C=24

<em><u>"Adult tickets cost $5.50, and child tickets cost $2.00...Bob bought 24 hockey tickets for $83":</u></em>

5.5A+2C=83

Now we can solve the first equation for A and substitute in 2nd equation and get the value of C.

A + C = 24

A = 24 - C

Now,

5.5 A + 2 C = 83

5.5 (24 - C) + 2C = 83

132 - 5.5C + 2C = 83

-3.5 C = 83 - 132

-3.5C = - 49

C = 14

Hence, Bob bought 14 child tickets

3 0
3 years ago
Simplify 3r(4r-5s)+2r(-6r-9s)
katovenus [111]

Answer:

-33rs

Step-by-step explanation:

First, distribute in the first part of the equation.

3r(4r-5s)=12r-15rs

Now, distribute in the first part of the equation.

2r(-6r-9s)=-12r-18rs

Combine this together.

12r-15sr-12r-18rs

Combine like terms. (12r and -12r will cancel out to 0.)

-33rs

Hope this helps! Have a wonderful day ^^

4 0
3 years ago
Read 2 more answers
write an equation in standard form for the line that has an undefined slope and passes through (-6,4)
Verdich [7]
Undefined slope is rise/0
run is equal to 0
that means it doesn't go left or right
means it is vertcal
means it is x=somethig

(x,y)
(-6,4)
x=-6 is the equation

oh, forgot about standard form

standard form is
ax+by=c

so

x+0y=-6 would be the equation in standard form
6 0
4 years ago
A spider is 6 mm long what fractional part of one centimeter is 6 mm
vladimir2022 [97]
I might not be entirely correct but I believe it is 3/5
5 0
4 years ago
Read 2 more answers
When paying for a restaurant order, a customer spent $18.00 ( for tip and cost) for a $15.00 meal. What percent was the tip? *
Over [174]

Answer:

16.67%

Step-by-step explanation:

The customer spent a total of $18 on a $15 meal. This means that, if counting tax within the $15 meal, the tip is $3.

Divide 3 with the total cost:

3/18 = ~0.1667

Change to percentage. Simply move the decimal point to the right two place values, and add a percentage sign:

0.1667 to a percent = 16.67%

16.67% is your answer.

~

4 0
3 years ago
Read 2 more answers
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