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3 years ago

6

After tossing the same coin 10 times, you are surprised to find that tails has come up 7 times. you therefore conclude that this

coin is not fair and that the probability of getting tails with this coin is 0.70.

1 answer:

ollegr [7]3 years ago

7 0

Answer:

7/10

Step-by-step explanation:

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What is the multiplicative inverse of -27 and what is the multiplicative inverse for 7/9 and -9/16

liberstina [14]

The multiplicative inverse of a number is the number when you multiply it, it gives you the product of 1.

So for - 27, what number will give us 1 when we multiply it by -27

-27 * -1/27 = 1

So the multiplicative inverse of -27 = -1/27

7/9 * 9/7 = 1

-9/16 * -16/9 = 1

So in essence, just take the number and flip it

-27 = -1 / 27

7/9 = 9/7

-9/16 = -16/9

3 0

3 years ago

Find the value of x.

lawyer [7]

Answer:

$\huge\boxed{x=\sqrt{70}}$

Step-by-step explanation:

ΔABC and ΔADB are similar (AAA).

Therefore the corresponging sides are in proportion:

$\dfrac{AB}{AD}=\dfrac{AC}{AB}$

Substitute:

$AB=x\\AC=7+3=10\\AD=7$

$\dfrac{x}{7}=\dfrac{10}{x}$ <em>cross multiply</em>

$(x)(x)=(7)(10)\\\\x^2=70\to x=\sqrt{70}$

4 0

3 years ago

(2.5×10−8)(9×10−10)<br><br> Express your answer in scientific notation.

Lunna [17]

Answer: 2.25x $10^{-17}$

Scientific notation is used in science because the number can be vary from so much that using decimal is making it hard. The number expressed in $10^{x}$ form. Both number in the question is already in scientific notation. Then to multiply the number and keep it at scienfitic notation the calculation should be:

2.5 x $10^{-8}$ x 9 x $10^{-10}$ = 22.5 x $10^{-18}$ = 2.25x $10^{-17}$

6 0

3 years ago

Read 2 more answers

I need help can someone help me

Marta_Voda [28]

Answer:

the answer is definitely d

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Janet can get 36-pack of bottled water for $9.60. How much would Janet have to pay for a 12-pack of bottled water if the ratios

Olenka [21]

Janet would have to pay $3.20.

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3 years ago