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Mumz [18]
2 years ago
13

If a fair coin is flipped 140 times, how many times would you predict that the coin lands on heads?

Mathematics
2 answers:
asambeis [7]2 years ago
5 0
70 times because there is a 50-50 chance of heads or tails
Alenkasestr [34]2 years ago
3 0

Answer:

70 times

Step-by-step explanation:

There is always a 50-50 chance on which side the coin can land, so on average, the coin lands 70 times on tales, and 70 times on heads.

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What is the value of x? Enter your answer in the box.
mario62 [17]
X = 12

because if you notice, each of the angles have a little arc in the corner, which means they are congruent. if all three angles are congruent, that means each angle is 60° because each triangle has a maximum value of 180°. therefore, this means it is an equilateral triangle.

that being said, each side must be equal as well. so, you can use any two sides to find x by using each one on a different side of an equation, then isolating and solving.

5x - 22 = 3x + 2 = 4x - 10

so

5x - 22 = 3x + 2
3x + 2 = 4x - 10
4x - 10 = 5x - 22

whichever one you solve for, x = 12. and if you plug in that number for x, each side equals the same number = 38
8 0
3 years ago
Rachel earned \$34$34 in 44 hours at her job today. She wants to know how much she could earn (e)(e) tomorrow if she works 1010
kari74 [83]

Answer:

<em>Rachel will earn $85 in 10 hours.</em>

Step-by-step explanation:

Rachel earned $34 in 4 hours at her job today.

Suppose, she will earn x dollar in 10 hours tomorrow.

So, <u>according to ratio of 'dollar' and 'hours'</u>, the equation will be.....

\frac{34}{4}=\frac{x}{10}

After cross multiplying, we will get.....

4x= 34*10\\ \\ 4x= 340\\ \\ x=\frac{340}{4}=85

Thus, Rachel will earn $85 in 10 hours.

6 0
3 years ago
Read 2 more answers
in japan, farmers have created watermealons in the shape of rectangular prisms. Find The volume of a prism-shaped watermelon in
Lubov Fominskaja [6]
To find the volume (area) of the watermelon (rectangular prism), you use the formula L*W*H. You would replace the letters with numbers so it is 10*2/3*9. When you multiply those numbers, your area is 60 inches squared. Hope I helped!
8 0
3 years ago
Is anyone able to help please
Naddika [18.5K]

Answer: - 8?? sorry if im wrong

Step-by-step explanation:

4 0
3 years ago
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Fide f (-7) evaluate the function
pychu [463]

Step-by-step explanation:

f(x)=-x²+8x

By replacing x with -7, we get

f(-7)=-(-7)²+8×(-7)

=-49-56

=-105

5 0
2 years ago
Read 2 more answers
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