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Semmy [17]
3 years ago
10

Write 2.457×10-7 in standard form?

Mathematics
1 answer:
egoroff_w [7]3 years ago
4 0

Answer:

0.0000002457.

Step-by-step explanation:

You move the decimal point left 7 times, because of the -7.

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5 4/8 + 1 3/8 =<br> 1. 33/8<br> 2. 55/8<br> 3. 6 7/16
Dovator [93]

Answer: 2. 55/8

Step-by-step explanation: Add the whole numbers first (5+1 = 6), then add the fractions (4/8 + 3/8 = 7/8). Now we have 6 7/8 and since they want the answer in fraction form we will multiply the 6 and the 8 (6x8=48) and then add the 7 to the 48 (7+48 =55) and we leave our answer over the denominator which is 8. This leaves us with the final answer of 55/8

4 0
2 years ago
Annabelle is taking the Polar Express ALL the way to the North Pole! The Polar Express is 100 meters long and it takes 30 second
vlada-n [284]

Hey!

Hope this helps...

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

To solve this, we will be doing a semi-alternate route, but it will get us to our answer...


400 / 100 = 4

30 / 4 = 7.5 seconds

60 * 60 * 7.5 = 27,000 meters per hour

<em></em><em>Lets plug it into our meters to miles formula...</em>

27,000 / 1,609.344 ~ 16.777 miles per hour


So...

The answer is:  The Polar Express was going 27,000 meters per hour (or roughly close to 16.777 miles per hour)...

7 0
4 years ago
What is the value of x?<br><br><br><br> Enter your answer in the box.<br><br> x =
ElenaW [278]

Answer:

x = 20

Step-by-step explanation:

Since there's 2 lines intercepting each other, the angle opposite of the other is the same.

3(20) + 50 = 110

6(20) - 10 = 110

7 0
3 years ago
Read 2 more answers
(9 + 11) divided by (5 + 4 + 1) (9 + 11) write 3 steps then put the answer and i will give u brainliest!
Rufina [12.5K]

Answer:

(9 + 11) /(5 + 4 + 1)(9 + 11)

20/10(20)

20/200

1/10

4 0
3 years ago
Read 2 more answers
2(x - 4) - 2 = 5x + 23<br> x= ?
crimeas [40]
X=-11 :) let me know if you need more help!
3 0
3 years ago
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