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3 years ago

PLEASE CHECK PLS HELP AND FIND ANSWER

Mathematics

1 answer:

kari74 [83]3 years ago

6 0

Here:

PFA for the answers. The numbering might confuse you. It goes from the 1 to the last marked question in ascending order. Hope it helps you. ~BYE

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What is the sum of sqrt -2 and sqrt -18

Assoli18 [71]

Answer:

4i sqrt(2)

Step-by-step explanation:

sqrt(-2) + sqrt(-18)

We know sqrt(ab)= sqrt(a) sqrt(b)

sqrt(-1)sqrt(2) + sqrt(9) sqrt(-2)

sqrt(-1)sqrt(2) + sqrt(9) sqrt(2)sqrt(1)

We know the sqrt(-1) is equal to i

i sqrt(2) +3 sqrt(2) i

i sqrt(2) +3i sqrt(2)

4i sqrt(2)

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3 years ago

Write an inequality comparing the rational numbers -3/4 and -2.

lyudmila [28]

Answer:

Step-by-step explanation:

-2 < -3/4. Another way in which to do this would be to use the LCD:

-8/4 < -3/4.

Even though 8 has a larger magnitude than does 3, -8/4 is smaller than -3/4. On the number line, -8/4 (or -2) is to the left of -3/4.

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3 years ago

Can someone help me with this it is confusing :(

Marina CMI [18]

What are you wanting help with

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3 years ago

Solve the following equation using the quadratic formula.

nataly862011 [7]

Answer:

x=3.5,x=-6

I hope this help

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3 years ago

Cos x = sin 34°<br> What is the value of x?<br> Enter your answer in the box.

vredina [299]

$\bf \textit{Cofunction Identities} \\\\ sin\left(90^o-\theta\right)=cos(\theta) \qquad cos\left(90^o-\theta\right)=sin(\theta) \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ cos(x)=\stackrel{90-56}{sin(\stackrel{\downarrow }{34^o})}\implies cos(\stackrel{\downarrow }{x})=sin(90^o-\stackrel{\downarrow }{56^o})\implies cos(56^o)$

3 0

3 years ago

Read 2 more answers