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3 years ago

Find the least common denominator of 1/6 and 2/7

Mathematics

1 answer:

harina [27]3 years ago

5 0

Answer:

it is it is 42

Step-by-step explanation:

7/42+12/42=19/42

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A safe has a 4- digit code and no digit can be repeated what is the probability that the code has all even digits

n200080 [17]

Answer:

Step-by-step explanation:

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3 years ago

What is the radius of a circle that has a circumference of 81 π square inches?

ira [324]

Answer:

r≈12.89

Step-by-step explanation:

Using the formula

C=2πr

Solving for r

r=C

2π=81

2·π≈12.89155

6 0

3 years ago

Read 2 more answers

Given that sin theta = 1/4, 0→theta→π/2, what<br>. what is the exact value of cos 8?

natali 33 [55]

<h3>Answer: Choice B $\frac{\sqrt{15}}{4}$ </h3>

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Work Shown:

Angle theta is between 0 and pi/2, so this angle is in quadrant Q1.

Square both sides of the given equation

$\sin \theta = \frac{1}{4}\\\\\sin^2 \theta = \left(\frac{1}{4}\right)^2\\\\\sin^2 \theta = \frac{1}{16}$

Then use the pythagorean trig identity to get

$\sin^2 \theta + \cos^2 \theta = 1\\\\\cos^2 \theta = 1-\sin^2 \theta\\\\\cos \theta = \sqrt{1-\sin^2 \theta} \ \ \ \text{cosine is positive in Q1}\\\\\cos \theta = \sqrt{1-\frac{1}{16}}\\\\\cos \theta = \sqrt{\frac{16}{16}-\frac{1}{16}}\\\\\cos \theta = \sqrt{\frac{16-1}{16}}\\\\\cos \theta = \sqrt{\frac{15}{16}}\\\\\cos \theta = \frac{\sqrt{15}}{\sqrt{16}}\\\\\cos \theta = \frac{\sqrt{15}}{4}\\\\$

3 0

3 years ago

1- write the x- coordinate and y- coordinate of points .<br>(please help me tomorrow is my exam)

BigorU [14]

The answer to your questions is: 4, 2

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3 years ago

Which of the following is a root of the polynomial function?

liubo4ka [24]

Answer:

Step-by-step explanation:

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3 years ago