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3 years ago

The diameter of a circle is 7 cm. Find its area to the nearest tenth.

Mathematics

1 answer:

lubasha [3.4K]3 years ago

8 0

The correct answer is 38.48 cm squared

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A guy-wire is attached to a pole for support. If the angle of elevation to the pole is 67° and the wire is attached to the groun

Andrews [41]

The angle = 67° and the pole is a right-angled triangle. Therefore the distance required to find (say "x) is the angle opposite the right-angle. The following equation needs to be solved:

cos 67 = 137 / x

Solving for x;
x = 350.62 ft

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3 years ago

What is the answer to this 10−(4y−8)=2−5y

Harrizon [31]

The answer to this math problem is y=-16

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3 years ago

Please help me. these problems

jeyben [28]

Answer:

1st problem:

Converges to 6

2nd problem:

Converges to 504

Step-by-step explanation:

You are comparing to $\sum_{k=1}^{\infty} a_1(r)^{k-1}$

You want the ratio r to be between -1 and 1.

Both of these problem are so that means they both have a sum and the series converges to that sum.

The formula for computing a geometric series in our form is $\frac{a_1}{1-r}$ where $a_1$ is the first term.

The first term of your first series is 3 so your answer will be given by:

$\frac{a_1}{1-r}=\frac{3}{1-\frac{1}{2}}=\frac{3}{\frac{1}{2}=6$

The second series has r=1/6 and a_1=420 giving me:

$\frac{420}{1-\frac{1}{6}}=\frac{420}{\frac{5}{6}}=420(\frac{6}{5})=504$ .

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3 years ago

What is the radius of the circle? in units please help

Sergio [31]

Answer:

4 units

Step-by-step explanation:

i hope its right

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2 years ago

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Lyrx [107]

Answer:

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Step-by-step explanation:

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