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3 years ago

Which value of x will satisfy the inequality x + 7 < 15?

Mathematics

2 answers:

Nadusha1986 [10]3 years ago

8 0

A. cuz 7+7=4 ; everything else would be equal to or larger than 15.

Levart [38]3 years ago

7 0

The answer is 8 which is b

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Answer:

Step-by-step explanation:

$\text{Given that:}$

$y = 1+ sec(x) \ \ y =3$

$\text{we draw the graph and the curves intersect at:}$

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$\text{Applying washer method;}$

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$V= \int ^b_a A(x) \ dx --- (2)$

$\text{outer radius = 3 - 1 = 2}$

$\text{inner radius =}$ $( 1 + sec(x) ) - 1 = sec (x)$

$A(x) = \pi ((2)^2 -(sec(x)^2) \\ \\ A(x) = \pi (4 - sec^2 (x)) ---- (3)$

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$V = \int ^{\dfrac{\pi}{3}}_{-\dfrac{\pi}{3}} \ \ \pi (4- sec^2 (x) ) \ dx$

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$V = 2 \pi \int ^{\pi/3}_{0} 4 . \ dx - 2 \pi \int ^{\pi/3}_{0} sec^2 (x) \ dx$

$V = 2 \pi(4) \int ^{\pi/3}_{0} 1 . \ dx - 2 \pi \Big( tan (x)\Big )^{\dfrac{\pi}{3}}_{0}$

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3 years ago

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3 years ago

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3 years ago

Scientists are studying a group of living cells under a microscope. They write down notes about the size, shape, and color of th

denpristay [2]

Answer: answer is D, descriptive, because the scientists are writing down observations but not making comparisons

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I hope this helps.

3 0

3 years ago

Read 2 more answers

*PLEASE HELP*

Evgesh-ka [11]

3^2+10^2=c^2

9+100=c^2

109=c^2

Square root both sides and you get:

10.44

(I’m pretty sure I’m right but make sure you double check good lucky

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3 years ago