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3 years ago

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

1 answer:

3 0

The theoretical probability of a coin flip is 1/2, meaning half the time the coin will land on heads and half the time the coin will land on tails. If the coin is flipped 140 times, half of those flips should be heads. So, the prediction would be 140 * 1/2 = 70

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If you deposit $300 in an account with a 6% interest rate, how much will be in your account after 1 year?

Ivahew [28]

You would have $318. Hope this helps out!

5 0

3 years ago

Which property is used 2(x+4)=2x+8

Elenna [48]

Answer:

Apply the distributive property

2x+2(4)=2x+8

Multiply 2 by 4

2x+8=2x+8

Move all terms containing x to the left and subtract 2x

2x+8-2x=8

Combine the opposite terms

2x+8-2x

Subtract 2x from 2x

0+8=8

8=8

All real number

Step-by-step explanation:

7 0

3 years ago

A shoe company found that 4.25% of the production is defective. The company

nlexa [21]

1190 pairs of shoes are defective

Solution:

Given that shoe company found that 4.25% of the production is defective

The company made 28,000 pairs of shoes

To find: Number of pairs of defective shoes

From given information, 4.25% of the production is defective which means 4.25% of 28,000 pairs of shoes

Defective shoes = 4.25% of 28,000

Defective shoes $= \frac{4.25}{100} \times 28000$

Defective shoes $= 4.25 \times 280 = 1190$

Thus 1190 pairs of shoes were defective

6 0

3 years ago

In 2013, voyager 1 traveled 1,468,800 kilometers each day. Whats that in scientific notation

n200080 [17]

Answer: 1.4688 x 10^6

Step-by-step explanation: Number has to be in between 1 and 10. Moved the decimal 6 places so that is your exponent

8 0

3 years ago

Solve this query plzzz

Olin [163]

Step-by-step explanation:

$\frac{\sin \:4A}{\cos \:2A} \times \frac{1 - \cos \:2A}{1 - \cos\:4A} = \tan \:A \\ \\ LHS = \frac{\sin \:4A}{\cos \:2A} \times \frac{1 - \cos \:2A}{1 - \cos\:4A} \\ \\ = \frac{2\sin \:2A.\cos \:2A}{\cos \:2A} \times \frac{1 - (2 { \cos}^{2}A - 1) }{1 - (2 { \cos}^{2}2A - 1) } \\ \\ = 2\sin \:2A \times \frac{1 - 2 { \cos}^{2}A + 1}{1 - 2 { \cos}^{2}2A + 1 } \\ \\ = 2\sin \:2A \times \frac{2- 2 { \cos}^{2}A }{2 - 2 { \cos}^{2}2A } \\ \\ = 2\sin \:2A \times \frac{2(1 - { \cos}^{2}A) }{2 (1- { \cos}^{2}2A) } \\ \\ = 2\sin \:2A \times \frac{1 - { \cos}^{2}A}{1- { \cos}^{2}2A } \\ \\ = 2\sin \:2A \times \frac{ { \sin}^{2}A}{{ \sin}^{2}2A } \\ \\ = 2 \times \frac{ { \sin}^{2}A}{{ \sin}2A } \\ \\ = 2 \times \frac{ { \sin}^{2}A}{{ 2\sin}A. \cos \: A } \\ \\ = \frac{ { \sin}A}{ \cos \: A } \\ \\ = tan \: A \\ \\ = RHS \\$

7 0

4 years ago