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2 years ago

Help with #4 please

Mathematics

1 answer:

Slav-nsk [51]2 years ago

7 0

For a circle, the circumference can be found by multiplying /pi by the diameter. In this case, 'x' appears to be the diameter of the circle meaning 'y' would be the circumference.

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Writing g for the acceleration due to gravity, the period,T, of a pendulum of length l is given by

ivanzaharov [21]

Step-by-step explanation:

$T=2\pi\sqrt{\frac{l}{g}}$

$T+\Delta T=2\pi\sqrt{\frac{(l+\Delta l)}{g}} =2\pi\sqrt{\frac{l}{g}}\sqrt{1+\frac{\Delta l}{l}}=2\pi\sqrt{\frac{l}{g}}(1+\frac{1}{2}\frac{\Delta l}{l}+0(\frac{\Delta l}{l}))=T(1+\frac{1}{2}\frac{\Delta l}{l}+0(\frac{\Delta l}{l}))$

Here, the Taylor approximation for a square root was applied, and O(x) stands for all negligible terms of Taylor's sum with respect to variable x.

So, $\Delta T=T\frac{1}{2}\frac{\Delta l}{l}$

b. For an increase of 2%, that is:

$\frac{\Delta l}{l}=0.02$

$\frac{\Delta T}{T}=\frac{1}{2}0.02=0.01=1\%$

7 0

2 years ago

Read 2 more answers

Adam is an opera singer. Below are the number of times that his voice cracked during each of six concerts

Gre4nikov [31]

In this picture dots are clearly shown the frequency of the concert.

<h3>What is Frequency?</h3><h3>Frequency refers to the number of times an event or a value occurs. A frequency table is a table that lists items and shows the number of times the items occur.</h3>

Here, in given data about the six concerts

Concerts Frequency

0 2

1 2

2 1

3 1

Thus, on number line we mark 2 dots on zero, 2 dots on one, 1 dot on two and 1 dot on 3.

Learn more about Frequency from:

brainly.com/question/5102661

#SPJ1

3 0

1 year ago

Write Ef as the sum of unit vectors E(-5,-2,4) and F(6,-6,6).

dexar [7]

Answer:

B. 11i-4j+2k

Step-by-step explanation:

5 0

3 years ago

Please help with this fast

Elena-2011 [213]

Answer:

Part 1) The value of x is 50°

Part 2) The measure of angle LOK is 114°

Option C

Step-by-step explanation:

we know that

if two angles are supplementary, then their sum is equal to 180 degrees

(x+64)°+66°=180°

solve for x

x+130°=180°

x=180°-130°=50°

Find the measure of angle LOK

∠LOK=(x+64)°

∠LOK=(50+64)°=114°

4 0

2 years ago

What is 392 rounded to nearest ten

NikAS [45]

Because the ones place is under 5, we round down, and 392 becomes 390 when rounded to the nearest 10

7 0

2 years ago

Read 2 more answers