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nydimaria [60]
3 years ago
8

Please help me!! Thank you

Mathematics
2 answers:
Anika [276]3 years ago
5 0

Answer:

153.93

Step-by-step explanation:

A= πr^2

A= π(7)^2

A= π(49)

A= 153.93

:)

mrs_skeptik [129]3 years ago
3 0

Answer:

The area of the circle is 153.86. Plz give me brainliest!

Step-by-step explanation:

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3 years ago
The length of a rectangle is increasing at a rate of 6cm/s and its width is increasing at a rate of 3cm/s. When the length is 20
castortr0y [4]

Answer:

150 cm/s

Step-by-step explanation:

We have that the area of a rectangle is as follows:

a = l * w

they ask us to change the increase in area with respect to time, therefore, if we derive with respect to t we are left with:

da / dt = w * (dl / d) t + l * (dw / dt)

From the statement we know that:

l = 20 cm

w = 15 cm

dl / dt = 6 cm / s

dw / dt = 3 cm / s

replacing each value we have:

da / dt = 15 * 6 + 20 * 3

da / dt = 150

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3 years ago
What should be added to p to get p+q?​
lisov135 [29]

Answer:

Step-by-step explanation:

The correct answer is q

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Assume sin t =.45 and sin w =.89 both t and w are postive and both t and w determne a terminal point in a quadrant 1. which of t
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The sum of two squares of two consecutive natural numbers is 41.Find the numbers​
Arada [10]
<h3><u>AnswEr</u><u> </u><u>:</u></h3>

The 2 unknown numbers are 4 and 5 .

<h3><u>Expla</u><u>nation</u><u> </u><u>:</u></h3>

Let the numbers be x and x + 1.

From the given information,

\dashrightarrow\sf \ \ \ x^2 + (x + 1)^2 = 41 \\  \\  \\

\dashrightarrow\sf \ \ \ 2 {x}^{2}  + 2x + 1 = 41 \\  \\  \\

\dashrightarrow\sf \ \ \ 2 {x}^{2}  + 2x + 1 - 41=0 \\  \\  \\

\dashrightarrow\sf \ \ \  {x}^{2}  + x - 20 = 0 \\  \\  \\

\dashrightarrow\sf \ \ \ (x + 5)(x - 4)=0 \\  \\  \\

\dashrightarrow\sf \ \ \ { \underline{ \boxed{ \bf{ \red{x =  - 5,4}}}}} \ \bigstar \\  \\

But, as we know -5 is not a natural number,

Hence, x = 4 .

<u>So the 2 unknown numbers are</u><u> </u><u>:</u>

  • x = 4 [1st number]

  • x + 1 = 4 + 1 = 5 [2nd number]

<h2><u>━━━━━━━━━━━━━━━</u></h2>
7 0
3 years ago
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