3 years ago

Can you help me please

Mathematics

1 answer:

sammy [17]3 years ago

3 0

Answer:

196

Step-by-step explanation:

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The circumference of a circle is 9 cm. What is the diameter?

topjm [15]

Answer: $\frac{9}{\pi } \\or\\2.86$

Step-by-step explanation:

$C=\pi d$

$9=\pi d\\\frac{9}{\pi } =d\\$

5 0

3 years ago

Solve for 2cos^2theta + 13costheta = -6. theta is >= 0 and < 360 degrees

LiRa [457]

$\\ 2cos^2 \theta+13cos \theta=-6 \\ 2cos^2 \theta+13cos \theta+6=0 \\ 2cos^2 \theta+12cos \theta+1cos \theta+6=0 \\ 2cos \theta(cos \theta+6)+1(cos \theta+6)=0 \\ (2cos\theta +1)(cos\theta+6)=0 \\$

$cos\theta+6=0 \\ cos\theta=-6 \\ \\ cos(x)=|a| \leq 1 \\ |-6| \geq 1 \\ \\$

$2cos \theta+1=0 \\ 2cos \theta=-1 \\ cos \theta=- \frac{1}{2} \\ \theta= \frac{ 2\pi }{3} +2 \pi k~~~k \in Z \\ \\ 0 \leq \theta \ \textless \ 360^{а} \\ 0 \leq \theta \ \textless \ 2 \pi \\ \theta = \frac{2 \pi }{3} \\ \theta = \frac{2 \pi }{3} , \frac{4 \pi }{3}$

7 0

3 years ago

Pleaseeeeeee help me

alekssr [168]

Answer:

-56

Step-by-step explanation:

(6 ✕–8) – 8

–48–8

= –56

3 0

3 years ago

Luis wants to buy a skateboard that costs $89.99. He has $30 saved. He wants to save $11 each week until he has enough money to

Nesterboy [21]

Answer:

first you would have to subtract $89.99 - $30 to get $69.99 then multiply 11 x 7 to get 77. the answer is 7 weeks

6 0

3 years ago

Pls answer this 100 points pls HELP

satela [25.4K]

Answer:

The answer is

N+ 1 = 3+2/2

Step-by-step explanation:

The answer is 3

This is a odd number

6 0

3 years ago

Read 2 more answers

Can you help me please ​

Can you help me please