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3 years ago

Write the decimal as a percent 0.049

Mathematics

2 answers:

kozerog [31]3 years ago

8 0

Answer:

the correct answer is 4.9%

Step-by-step explanation:

alexandr1967 [171]3 years ago

3 0

Answer:

4.9%

Step-by-step explanation:

To convert from decimal to percent, just multiply the decimal value by 100. In this example we have: 0.049 × 100 = 4.9%

➥ Written Out:

1) Move the decimal point two places to the right: 0.049 → 0.49 → 4.9.

2) Add a % sign: 4.9%

Answer: 4.9%

<h3>I hope this was helpful! Consider marking my answer brainliest if it was, and let me know if I can help with anything else.</h3>

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Using Pythagoras theorem, the top of the ladder moving down when the foot of the ladder is 3 feet from the wall is of -0.518 feet/sec.

Let distance from the wall to the foot of the ladder is 'x' feet and the height of the top of the ladder is 'y' feet.

Pythagoras theorem, $x^{2} + y^{2} = (12)^{2}$ --->(1)

Given, $\frac{dx}{dt}= 2feet/second$ at x=3

Put x=3 in Pythagoras theorem equation (1)

$(3)^{2} + y^{2} = 144$

$y^{2} = 144 - 9$

$y^{2}$ = 135

y = 11.61

Derive equation (1) w.r.t to 't'

$2x\frac{dx}{dt} + 2y\frac{dy}{dt} = 0$ ---->(2)

substitute the value of 'x', 'dx/dt' and 'y' in equation (2), we get the fast of the top of the ladder moving down when the foot of the ladder is 3 feet from the wall

$2(3)(2) + 2 (11.61)\frac{dy}{dt} = 0$

12 + 23.22 $\frac{dy}{dt}$ = 0

$\frac{dy}{dt}= \frac{-12}{23.22}$

$\frac{dy}{dt} = -0.518$

Hence, using Pythagoras theorem the top of the ladder moving down when the foot of the ladder is 3 feet from the wall is of -0.518 feet/sec.

Learn more about Pythagoras theorem here

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What is 1 half added to 3 tenths?

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Hello!

Let's look at this below.

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