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3 years ago

What is the cirumference of a circle with a diameter of 4.1 cm

Mathematics

1 answer:

nordsb [41]3 years ago

5 0

Answer:

C = 12.88

Step-by-step explanation:

If the radius of the circle is 4 cm, then the diameter of the circle is 4 cm x 2, or 8 cm. If you know the circumference of the circle, divide it by π to get the diameter.

C = π d = π · 4.1 = 12.88053cm

Glad to help ya!!

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There are 32 students in a class. 12 of those students are girls what percent of the class are boys?

gtnhenbr [62]

You have 12 girls out of 32, so that's 20 boys. Take your amount of boys divided by your total number. So, 20/32 = .625
You want a percentage, so .625 x 100 = 62.5% boys

3 0

4 years ago

Find the 8th term of the geometric sequence whose common ratio is 2/3 and whose first term is 7

motikmotik

Answer:

The 8th term of the sequence is 896/2187.

Step-by-step explanation:

We want to find the 8th term of a geometric sequence whose common ratio is 2/3 and whose first term is 7.

We can write a direct formula. Recall that the direct formula of a geometric sequence is given by:

$\displaystyle x_{n} = a\left(r\right)^{n-1}$

Where a is the initial term and r is the common ratio.

Substitute:

$\displaystyle x_{n} = 7\left(\frac{2}{3}\right)^{n-1}$

To find the 8th term, let n = 8. Substitute and evaluate:

$\displaystyle \begin{aligned} x_{8} &= 7\left(\frac{2}{3}\right)^{(8) - 1} \\ \\ &= 7\left(\frac{2}{3}\right)^{7} \\ \\ &= 7\left(\frac{128}{2187}\right) \\ \\ &= \frac{896}{2187} = 0.4096...\end{aligned}$

In conclusion, the 8th term of the sequence is 896/2187.

8 0

3 years ago

Complete the ordered pair. The graph of y= sin(2x - 1) passes through the point (___,0).

Westkost [7]

Answer:

(0.5,0)

Step-by-step explanation:

Input the equation into a graphing calculator

4 0

3 years ago

Question 3 (1 point) If the following is a rhombus, find the missing measures. Find PQ. PQ=

Svetllana [295]

Answer:

Step-by-step explanation:

PQ*PQ=PQ²=(5x+16)²=25x²+160x+256

8 0

3 years ago

Alisiya [41]

Answer:

f456897

Step-by-step explanation:

because we dont like it

7 0

3 years ago