What is the sum of 4 x 10^-5 and 3 x 10^-5

Mathematics

2 answers:

julsineya [31]3 years ago

5 0

The answer is 35 because if you multiply

Katyanochek1 [597]3 years ago

4 0

This is scientific notation. There is an understood decimal after the 4. Move it 5 places to the left because the exponent behind the 10 is negative (if the exponent was positive it would move to the right). You get .00004. Then, the 4 also has an understood decimal behind it. It will also move 5 places to the left because the exponent after the 10 is a negative 5. You get .00003. Sum tells us we need to add these numbers together so, the final answer is .00007.

You might be interested in

Write g(n)=2n(3-n)+5 in standard form

wolverine [178]

Standard form is an²+bn+c

expand
distribute
2n(3-n)+5=
2n(3)+2n(-n)+5=
6n-2n²+5=
-2n²+6n+5

g(n)=-2n²+6n+5 is standard form

6 0

4 years ago

I’m just not getting it! I need step by step.

Alexus [3.1K]

Answer:

$7x + 10 + x + 20 + 2x \\ 7x + x + 2x + 10 + 20 \\ 10 x + 30 \\ x = \frac{30 }{10} \\ x = 3 \\ (7x + 10) = 7 \times 3 + 10 = 31 \\ (x + 20) = 3 + 20 = 23 \\ (2 \times 3) = 6$

Step-by-step explanation:

Please mark as brainliest

8 0

3 years ago

We want to know the probability that a student selected randomly from her class would have an “A” (90 or above) in her class. Fi

goldfiish [28.3K]

Answer:

38.46%

Step-by-step explanation:

There are 91 students and 35 of them received a score of 90 or above.

So, there are 35/91 students with an A grade.

The probability to pick a random student that would be the same proportion that those who got the right score, so 35 / 91 = 0.3846 or 38.46%

38.46% of chances to pick someone who got an A (90 score or above), and, the opposite, 61.54% of chances to pick someone who didn't get an A. That's a strong class!

8 0

3 years ago

Read 2 more answers

Consider the sequence: 3, 8, 13, 18, 23, ...The recursive formula for this sequence is:an = an-1 + 5In a COMPLETE sentence, expl

Leona [35]

Answer:

see the explanation

Step-by-step explanation:

we know that

In an <u><em>Arithmetic Sequence</em></u> the difference between one term and the next is a constant called the common difference

we have

$3, 8, 13, 18, 23,...$