4 years ago

What is the common denominator of 2/4 and 7/8

Mathematics

2 answers:

vlada-n [284]4 years ago

7 0

Eight 4 times 2 is 8 and 8 times 1 is 8

tangare [24]4 years ago

7 0

If you multiply 2/4 by 2/2, you will get 4/8, which has a common denominator with 7/8, which is 8.

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If t a n squared θ = 3 /8 , what is the value of s e c θ

TEA [102]

We can use 3 facts:

$\tan{\theta}=\frac{y}{x}$

$\sec{\theta}=\frac{r}{x}$

$x^2+y^2=r^2$

So, to find our x and our y we can do:

$\tan^2{\theta}=\frac{3}{8} \implies \\ \tan{\theta}=\pm{\sqrt{\frac{3}{8}}=\pm\frac{\sqrt{3}}{\sqrt{8}}$ So, now that we know our x and our y we can find our r.

$(\sqrt{3})^2+(\sqrt{8})^2=11 \implies r=\sqrt{11}$

You'll notice, though, that there were two solutions for $\tan{\theta}$ , which means we have a positive and a negative for our x. So:

$\sec{\theta}=\frac{\sqrt{11}}{\sqrt{8}} \\ \sec{\theta}=-\frac{\sqrt{11}}{\sqrt{8}}}\\ \text{Rationalizing both of them:}\\ \sec{\theta}=\frac{\sqrt{88}}{8} \\ \sec{\theta}=-\frac{\sqrt{88}}{8}$

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3 years ago

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Factor completely 3x3 + 3x2 − 18x

grandymaker [24]

Try going with→ -3 ((6x - 5 ))

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3 years ago

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Help?? ASAPpppppppppppp

Marta_Voda [28]

Answer:

y = x - 4

Step-by-step explanation:

The equation is just y = x shifted down 4 units, so it's y = x - 4. If you have to use all of the symbols, you can write "y = x * 1 - 4 + 0". Otherwise, use the one under "Answer" as it is shorter

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2 years ago

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Rewrite the equation in proper Standard Form. <br> 1/4x − 3/4y = −3

balu736 [363]

The answer would be x - 3y = -12 .

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3 years ago

What's the value of given expression :<br><br><br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B16%20%5Ctimes%201%7D%20" id="Te

Georgia [21]

Answer:

$\sqrt{16 \times 1} \\ = \sqrt{16} \\ = \sqrt{4 \times 4} \\ = 4 \\ thank \: you$