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irakobra [83]
3 years ago
13

HELP ME PLEASE ASAP PLZ

Mathematics
1 answer:
mixer [17]3 years ago
3 0

Answer:

c

Step-by-step explanation:

plz Brainliest i need it

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The radius of a circle is 42 inches. What is the circle's area?<br> Use 3.14 for ​.
Mazyrski [523]

Answer:

A =5538.96 in^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

We know the radius is 42 and pi is approximated by 3.14

A = 3.14 * 42^2

A =5538.96 in^2

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3 years ago
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What is the range of the function?
FinnZ [79.3K]

2, 6, 8) → D

each element in the domain ( - 1, 3, 5) maps to exactly one value in the range (2, 6, 8)


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3 years ago
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What is the value of 16- a when a = 9​
Allisa [31]

7 if a = 9 the 16-9=7

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3 years ago
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A portrait without its frame has a height 2.5 times its width, w, in inches. Its frame is 3 in. wide all
Greeley [361]

Answer:

2 inches

Step-by-step explanation:

it is ,2inches because they are joining

4 0
2 years ago
If 2y=x³ + 2x², find dy/dx when x=2.
scZoUnD [109]

Answer:

10

Step-by-step explanation:

\boxed{\textsf{If }y=x^n,\: \textsf{then }\dfrac{\text{d}y}{\text{d}x}=nx^{n-1}}

<u>Given equation</u>:

2y=x^3+2x^2

Isolate y by dividing both sides by 2:

\implies y=\dfrac{1}{2}x^3+x^2

Differentiate with respect to x:

\implies \dfrac{\text{d}y}{\text{d}x}=3 \cdot \dfrac{1}{2}x^{3-1}+2 \cdot x^{2-1}

\implies \dfrac{\text{d}y}{\text{d}x}=\dfrac{3}{2}x^2+2x

Finally, substitute x = 2 into the differentiated equation:

\begin{aligned} \implies \dfrac{\text{d}y}{\text{d}x} & =\dfrac{3}{2}(2)^2+2(2)\\\\ & = \dfrac{3}{2}(4)+4\\\\ & = \dfrac{12}{2}+4\\\\ & = 6+4\\\\ & = 10\end{aligned}

Learn more about differentiation here:

brainly.com/question/27958412

brainly.com/question/26488862

5 0
2 years ago
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