3 years ago

WILL MARK BRAINLIEST TO THE FIRST PERSON!!!!

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

7 0

Answer:

I think the answer is 105

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How do the ratios of lengths, areas, and volumes compare in similar solids?

kondor19780726 [428]

If the ratio between the sides is $r$ , the ratio between the areas will be $r^2$ and the ratio between the volumes will be $r^3$

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3 years ago

X -y = 3 solve for y

nirvana33 [79]

Answer:

y= -3+x

Step-by-step explanation:

hope this helps :)

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3 years ago

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find three consecutive even integers such that the sum of the smallest integer and twice the median integer is 20more than the l

3241004551 [841]

X = smallest; x + 2 = middle, and x + 4 = largest
x + 2(x+2) = 20 + x + 4
x + 2x + 4=24 +x
3x + 4 = 24 + x
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so the three integers are 10, 12, and 14

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3 years ago

5cosx -2sin(x/2) +7=0 Help me to find x step by step pls

miskamm [114]

Answer:

x = 180

Step-by-step explanation:

First, you need to know

1. Double-angle formula:

cos(2x) = $cos^{2}x - sin^{2}x$

2. Pythagorean identity:

$cos^{2}x + sin^{2}x = 1$

Back to your problem, replacing the variable by the above:

$5cosx-sin\frac{x}{2}+7 = 0$

$5(cos^{2}\frac{x}{2}-sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Double-angle formula

$5(1 - 2sin^{2}\frac{x}{2}) - 2sin\frac{x}{2} + 7 = 0$ By Pythagorean identity

Given $y = \frac{x}{2}$

$5(1-2sin^{2}y) - 2siny + 7 = 0$

$10sin^{2}y+2siny-12=0$

$5sin^{2}y+siny-6=0$

$(5siny + 6)(siny - 1)=0$ , we know -1 < sinx < 1, for every x ∈ R

$siny = 1, y =90$

$y = \frac{x}{2}$

$x = 180$

8 0

3 years ago

A scatterplot consists of (1, 4.0), (2, 3.3), (3, 3.8), (4, 2.6), and (5, 2.7). The line of best fit used to model the data is y

r-ruslan [8.4K]

Answer:

it's the second graph :)

Step-by-step explanation:

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3 years ago

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