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4 years ago

Please helpppppppppp me

Mathematics

1 answer:

Solnce55 [7]4 years ago

7 0

Your answer is

0.0000005

It’s just like you have to move 7 decimals backwards from 5

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What is the product of 5−2i and 3−4i?<br> Enter your answer, in standard form, in the box

Lelechka [254]

Answer:

$\boxed{7-26i}$

Step-by-step explanation:

The binomials are multiplied in the usual way, using FOIL or the distributive property:

(5 -2i)(3 -4i) = 15 -20i -6i +8i²

Since i² = -1, this becomes ...

= 15 -20i -6i -8 = 7 -26i

7 0

3 years ago

I need help! I need to know how to do the work and what the answer is plzzz

tangare [24]

Answer:

36 ft

Step-by-step explanation:

So the proportion of the big triangle is 48:4 or 12:1. So if the small triangle’s height is 3 feet, then 3*12 is 36 feet.

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4 years ago

Read 2 more answers

Evaluate these expressions using the correct order if operations. 8 * (6 + 7) - 5

yaroslaw [1]

The correct answer is 99.

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3 years ago

What happens to water during evaporation?

Dimas [21]

Answer:

Your answer is D

Step-by-step explanation:

Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor.

Hope this helps :)

7 0

3 years ago

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To estimate the mean score μ of those who took the Medical College Admission Test on your campus, you will obtain the scores of

pychu [463]

Answer:

Step-by-step explanation:

Let X be the SRS scores of students.

Given that X is normal with standard deviation about 6.5.

Mean difference = $|bar x-\mu|$ is desired

i.e. Z score should be $|z|$

Std error = std deviation of sample = 0.447

b) $z =2.95\\\frac{1.3}{s} =2.95\\s = 0.447\\6.5/\sqrt{n} =0.447\\n >193$

So std error must be 0.997 and sample size must be atleast 193 to get the difference of x bar and mu to lie within 1.3 points in either direction

8 0

3 years ago