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3 years ago

What is the circumference of this circle, in centimeters?

Mathematics

1 answer:

Vlada [557]3 years ago

7 0

Answer:

65.9 so it rounds to 66cm

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Help me please! I need to find the answer for the angle indicated in bold!

bagirrra123 [75]

$(x+ 63) + (x + 133) = 180 \\ 2x + 196 = 180 \\ 2x = - 16 \\ x = - 8 \\ so... \\ x + 133 = ( - 8 ) + 133 \\ = 125$

8 0

3 years ago

Two groups of staff at a store are making flowers to decorate the entrance. If Group A were to do it alone, it would take them 1

Tcecarenko [31]

Answer:

$\dfrac{6750}{7}$

Step-by-step explanation:

Let x be the number of flowers. If Group A were to make x flowers alone, it would take them 10 hours to complete the task, then they make $\dfrac{x}{10}$ flowers in an hour. If Group B were to make x flowers alone, it would take them 15 hours to complete the task, then they make $\dfrac{x}{15}$ flowers in an hour.

The groups decided to work together. They can make $\dfrac{x}{10}+\dfrac{x}{15}=\dfrac{x}{6}$ together in an hour and it takes them $\dfrac{x}{\frac{x}{6}}=6$ hours. Group B took a break for 1 hour and 40 minutes ( $1\dfrac{2}{3}$ hour), then Group B works

$6-1\dfrac{2}{3}=4\dfrac{1}{3}$ hours.

Thus,

$\dfrac{x}{10}\cdot 6-\dfrac{x}{15}\cdot 4\dfrac{1}{3}=300,\\ \\\dfrac{3x}{5}-\dfrac{13x}{45}=300,\\ \\14x=300\cdot 45=13500,\\ \\x=\dfrac{13500}{14}=\dfrac{6750}{7}.$

6 0

3 years ago

Simplify the expression show all your work 18 / 2 x 3 over 5 - 2

11Alexandr11 [23.1K]

Answer:

18÷2 × 3 / 5-2

9 ×3 / 3

27/3

tyvm this was my 100th answer :)

6 0

3 years ago

7m + 3mn when m = 8 and n = 14

Kazeer [188]

Answer:

392

Step-by-step explanation:

m = 8 and n = 14

Substituting the values of m and n in the question, we get :

7m + 3mn

=( 7 x 8) +(3 x 8 x 14)

= 56 + 336

= 392

8 0

3 years ago

Read 2 more answers

True or False. Explain reasoning

Kay [80]

Answer:

false

Step-by-step explanation:

hope it helps

yan lang po alam ko

5 0

3 years ago