3 years ago

Find (2 × 10^7) + (3 × 10^4).

Mathematics

1 answer:

serious [3.7K]3 years ago

7 0

(2 × 10^7) + (3 × 10^4)

= (2 × 10^7) + (0.003 × 10^7) . . . . make the exponents match

= (2 + 0.003) × 10^7

= 2.003 × 10^7

The appropriate choice is ...

... b. 2.003 × 10^7

You might be interested in

I need help in number 1, please.

babunello [35]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

A box holds 8 red and 4 blue beads. Three beads are taken from the box and not replaced. Determine: The probability that all thr

zubka84 [21]

Answer: $\dfrac{14}{55}, \dfrac{13}{55}$

Step-by-step explanation:

Given

There are 8 red and 4 blue beads

Three beads were taken from the box

(i)No of ways of choosing three red beads out of 12 beads is $^8C_3$

Total no of ways $^{12}C_3$

Probability is

$P=\dfrac{^8C_3}{^{12}C_3}=\dfrac{8\times 7\times 6}{12\times 11\times 10}=\dfrac{2\times 7}{11\times 5}\\P=\dfrac{14}{55}$

(ii)atleast two beads refers to minimum two beads

There can be two possibilities (2B,1 R), (3B, 0R)

$\Rightarrow P=\dfrac{^4C_2\times ^8C_1}{^{12}C_3}+\dfrac{^4C_3}{^{12}C_3}\\\\\Rightarrow P=\dfrac{6\times 8}{220}+\dfrac{4}{220}=\dfrac{52}{220}\\\\\Rightarrow P=\dfrac{13}{55}$

6 0

3 years ago

a school cafeteria makes cheese sauce for macaroni using 15 cups of Swiss cheese and 17 cups of cheddar cheese Perry tries to ma

deff fn [24]

No, Perry is not using the correct ratio, because 15:17 is not equivalent to 5:7

15 divided by 3 is indeed 5 but divided 17 by 3 does not give you 7, nor a whole number.

I hope this helps.

3 0

3 years ago

Read 2 more answers

Derek is working out in order to be in shape for the upcoming football season. He does cardio exercises and strength training. E

Serjik [45]

Answer:

what is the question you only gave the problem

Step-by-step explanation:

7 0

3 years ago

I am so confused, plz help! I will mark brainliest.

Alex Ar [27]

Answer:

-45

Step-by-step explanation:

5 0

3 years ago