2 years ago

Help T-T If u good at word problems

Mathematics

1 answer:

jeka942 years ago

3 0

Answer:

what is the problem?

Step-by-step explanation:

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If x2=7 what is a value of x? A.√7 B.3.5 C.√49 D.14

ikadub [295]

Answer:

x = sqrt(7) or x = -sqrt(7) thus of the choices you have A:

Step-by-step explanation:

Solve for x:

x^2 = 7

Take the square root of both sides:

Answer: x = sqrt(7) or x = -sqrt(7)

4 0

2 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

3 years ago

Which of these terms is unlike the others? 4b, b, 4, 7b A. 4b B. b C. 4 D. 7b

olga_2 [115]

Answer:

C. 4

Step-by-step explanation:

All other answer choices involve the variable 'b' and/or are tied to it in some way. The sole number 4 has no connection to the variable b, therefore it is C. 4.

5 0

2 years ago

Can someone check my answers to see if they are correct please? They are on the 2nd page. Thank you!

soldier1979 [14.2K]

Answer:

Yes, all your answers are correct.

They are correctly matched with their reasons.

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2 years ago

QUESTION: 12+ 15 = 3x6 - 4

FromTheMoon [43]

Answer:

Step-by-step explanation:

6 0

3 years ago

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