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Tamiku [17]
1 year ago
6

The diameter of a circle is 9 in. Find its circumference in terms of . Answer: C = in Submit Answer

Mathematics
1 answer:
Pie1 year ago
7 0
C\text{ = 9}\pi\text{ in}

To find the circumference, we will have to multiply the length of the diameter by pi

Mathematically, we have this as;

\begin{gathered} C\text{ = }\pi\times d \\ C=\text{ }\pi\times9\text{ = 9}\pi \end{gathered}

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Please help!<br> Simplify the expression using order of operations:25 - 5 + 36/9 - 6(7)
fgiga [73]

Answer:

-18

Step-by-step explanation:

Follow these steps to get your answer!

Divide 36/9 and multiply -6(7)

25 - 5 + 4 - 42

Subtract 25-5

20 + 4 -42

Add 4 to 20.

24-42

Subtract 42 from 24.

-18

4 0
2 years ago
Read 2 more answers
(1+tanx)/(sinx+cosx)=secx
jek_recluse [69]

\frac{1+\tan x}{\sin x+\cos x}=\sec x is proved

<h3><u>Solution:</u></h3>

Given that,

\frac{1+\tan x}{\sin x+\cos x}=\sec x  ------- (1)

First we will simplify the LHS and then compare it with RHS

\text { L. H.S }=\frac{1+\tan x}{\sin x+\cos x}  ------ (2)

\text {We know that } \tan x=\frac{\sin x}{\cos x}

Substitute this in eqn (2)

=\frac{1+\frac{\sin x}{\cos x}}{\sin x+\cos x}

On simplification we get,

=\frac{\frac{\sin x+\cos x}{\cos x}}{\sin x+\cos x}

=\frac{\sin x+\cos x}{\cos x} \times \frac{1}{\sin x+\cos x}

Cancelling the common terms (sinx + cosx)

=\frac{1}{c o s x}

We know secant is inverse of cosine

=\sec x=R . H . S

Thus L.H.S = R.H.S

\frac{1+\tan x}{\sin x+\cos x}=\sec x

Hence proved

5 0
3 years ago
Pablo and max's follows a flight pattern approximatley modled by the equation h(t)=-8t^2+16t+2 where h(t)is their rocket's heigh
kodGreya [7K]

Answer: 2.11 s

Step-by-step explanation:

Given

Equation of rockets height is given by

\Rightarrow h(t)=-8t^2+16+2

Height will be zero once the rocket lands on the ground

So, we can write

\Rightarrow h(t)=0\ \text{or}\ -8t^2+16t+2=0\\\Rightarrow 8t^2-16t-2=0\\\\\Rightarrow t=\dfrac{16\pm \sqrt{(-16)^2-4(8)(-2)}}{2\times 8}\\\\\Rightarrow t=\dfrac{16\pm \sqrt{320}}{16}\\\\\text{Neglecting negative value of t}\\\\\Rightarrow t=\dfrac{16+17.888}{16}=2.11\ s

7 0
2 years ago
WILL MAEK BRAINLIST <br>A shop has 20 pens. 12 of them are red. What percent of them are red?<br>​
dlinn [17]

Answer:

12/20×100percent

=12×5percent

=60percent answer

4 0
2 years ago
A savings account with 500 now has 120
vovangra [49]

Answer:380

Step-by-step explanation:

500-120=380

7 0
3 years ago
Read 2 more answers
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