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3 years ago

Find the simplified form of the expression. Give your answer in scientific notation. (3x10^8)(9x10^7)

Mathematics

1 answer:

Burka [1]3 years ago

5 0

27, 10^ 15
Hope it helps!
#MissionExam001

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Write a quadratic equation having the given numbers as solutions. -7 and -5

AlexFokin [52]

Answer:

x²+12x+35

Step-by-step explanation:

in factored form it would just be

(x+7)(x+5)=0

expand this

x²+12x+35=0

6 0

3 years ago

8^1/3 or how to do it with any fractions

ahrayia [7]

Answer:

Step-by-step explanation:

When given a fractional power, you want to try to see if the base has any power that can be used to simplify the power.

Since a^b/c =

$\sqrt[b]{ {a}^{c} }$

8^1/3=

$\sqrt[3]{ {8}^{1} }$

8 times by it self it 8

cube root of 8 is three numbers that are the same and times by each other to give 8

2×2×2=8

》2

8 0

3 years ago

Find five rational numbers between 3/7 and 2/3

Softa [21]

Answer:

First, you get both of them with same denominator:

3/7 and 2/3 => 9/21 and 14/21, however, there are only 4 rational numbers between 9/21 and 14/21.

The solution is that you can raise the denominator 2 times:

9/21 and 14/21 => 18/42 and 28/42

Now you can select : 19/42, 20/42, 21/42, 22/42, 23/42. They are a group of 5 rational numbers you are looking for.

4 0

3 years ago

How to do this ? Ppppp

user100 [1]

It may be PpPpP that is if that is your question.

6 0

3 years ago

In Chemistry class, Andrew has earned scores of 64, 69, and 73 on three tests. He must maintain an average of 70 to pass the cou

Naddik [55]

X - the score he must earn
The average of n numbers is the sum of these numbers divided by n.

$\frac{64+69+73+x}{4}=70 \\
\frac{206+x}{4}=70 \ \ \ \ \ \ \ \ \ \ \ \ |\times 4 \\
206+x=280 \ \ \ \ \ \ \ \ |-206 \\
x=74$

He must earn a score of (at least) 74.

8 0

3 years ago