3 years ago

Can someone please help me?

Mathematics

1 answer:

Zigmanuir [339]3 years ago

5 0

12 is the answer to this quest

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5x :8= 7:2. Please help me I’m stuck

kolbaska11 [484]

Answer:

Step-by-step explanation:

5x/8 =7/2

10x=56

x=28/5

x=5.6

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3 years ago

Find the<br>value of<br>x if<br>3^x=3^2020+3^2017/3^2017+3^14

statuscvo [17]

Answer:

I love algebra anyways

The ans is in the picture with the steps how i got it

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Step-by-step explanation:

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3 years ago

If cos A = 3 over 11, then which of the following is correct?

ziro4ka [17]

Answer: The answer is (a) sec A = 11 over 3.

Step-by-step explanation: Given that Cosine of an angle 'A' is 3 over 11,

i.e.,

$\cos A=\dfrac{3}{11}.$

And we need to find which one of the given four options is correct.

We have the following relations between cosine, secant and cosecant of an angle from trigonometry.

$\sec A=\dfrac{1}{\cos A}~~\textup{and}~~\csc A=\dfrac{1}{\sqrt{1-\cos^2 A}}.$

Therefore,

$\sec A=\dfrac{11}{3}$

and

$\csc A=\dfrac{1}{\sqrt{1-\frac{9}{121}}}=\dfrac{1}{\sqrt{\frac{112}{121}}}=\dfrac{11}{4\sqrt 7}.$

Thus, the correct option is (a) sec A = 11 over 3.

3 0

4 years ago

"is it possible to have more than one set of seven numbers having a mean of 50 and a standard deviation of 0?"

12345 [234]

The answer is 1.6. How??

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4 years ago

Three angles in a quadrilateral are 65, 80, and 100. Which of the following could be the 4th angle?

Nimfa-mama [501]

All the angles of the quadrilateral have to sum up to 360

So 65 + 80 + 100 = 245 and then 360 - 245 = 115

So its B. 115

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3 years ago