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2 years ago

Joe tosses a quarter into the air. He does this 30 times. How many times should he expect it to land on heads?

Mathematics

1 answer:

oee [108]2 years ago

4 0

Answer:

Step-by-step explanation:

If it is a fair coin, he should expect heads about 1/2 the time.

1/2 of 30 = 15

He should expect 15 heads.

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Step-by-step explanation:

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3m to the power of 2= 222<br> What is the value of m?

Alecsey [184]

Answer:

if it is 3m^2 then √74 if you meant (3m)^2 it is √74/3

Step-by-step explanation:

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2 years ago

Help please !!! I’m stuck on these problems

Sauron [17]

Answer:

$b=6.8\ units$

Step-by-step explanation:

we know that

Applying the law of sines in the triangle ABC

$\frac{AB}{sin(C)}=\frac{AC}{sin(B)}$

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$\frac{15}{sin(140\°)}=\frac{b}{sin(17\°)}$

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3 years ago

I’m confused on this

dexar [7]

$\huge\boxed{x=25}$

The mistake is in Step 1. The solver should have also squared $9$ when squaring the other side of the equation.

<h3>Correctly solving</h3>

$\begin{aligned}\sqrt{3x+6}&=9\\(\sqrt{3x+6})^2&=9^2\\3x+6&=81\\3x+6-6&=81-6\\3x&=75\\\frac{3x}{3}&=\frac{75}{3}\\x&=25\end{aligned}$

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1 year ago

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Find all the factors of 73 prime or composite

Rufina [12.5K]

73 is a prime number

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2 years ago