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NeTakaya
3 years ago
15

The number 0.000000675 can be written in scientific notation as 6.75 x 10x.What is the value of x?

Mathematics
1 answer:
julsineya [31]3 years ago
5 0

Answer:

x= -7

Step-by-step explanation:

hope this helps you!

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Find the 21st term in the arithmetic sequence.<br> 3, 7, 11, 15, 19, ...
NNADVOKAT [17]

The 21st term of the given arithmetic sequence is 83. The nth term of an arithmetic sequence is applied to find the required value where n = 21.

<h3>What is the nth term of an arithmetic series?</h3>

The nth term of an arithmetic sequence is calculated by the formula

aₙ = a + (n - 1) · d

Here the first term is 'a' and the common difference is 'd'.

<h3>Calculation:</h3>

The given sequence is an arithmetic sequence.

3, 7, 11, 15, 19, ....

So, the first term in the sequence is a = 3 and the common difference between the terms of the given sequence is d = 7 - 3 = 4.

Thus, the required 21st term in the sequence is

a₂₁ = 3 + (21 - 1) × 4

⇒ a₂₁ = 3 + 20 × 4

⇒ a₂₁  = 3 + 80

∴ a₂₁  = 83

So, the 21st term in the given arithmetic sequence is 83.

Learn more about the arithmetic sequence here:

brainly.com/question/6561461

#SPJ1

5 0
1 year ago
24. A tank can be filled by a pipe in 30 minutes and emptied by another pipe in 50 minutes. How many minutes will it take to fil
OleMash [197]

Answer:

75 minutes

Step-by-step explanation:

The rate at which the tank is filled up, F, and emptied, E, are respectively:

F=\frac{V}{30}*60 = 2V/hour\\E=\frac{V}{50}*60 = 1.2V/hour

Since V is the full volume of the tank, the time required to fill the tank if both pipes are open is given by:

F-E=2V/hour-1.2V/hour = 0.8V/hour\\t= \frac{1}{0.8}=1.25\ hours = 75\ minutes

It will take 75 minutes to fill the tank if both pipes are open.

4 0
3 years ago
Help please due soon
viktelen [127]

Answer:

as of my calculation it is, a acute angle to the looks of it. so it is therefore 25.

Step-by-step explanation:

4 0
3 years ago
Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!! NO SCAM LINKS !!!!!!!!!!!!!!!!!!
Xelga [282]

Answer:

115

Step-by-step explanation:

180-65=115

the whole triangle is 180 degrees so subtract 65 degrees from it

4 0
3 years ago
What is the slope-intercept equation of the line below?
kkurt [141]

Answer:

5=67

Step-by-step explanation:

54÷0=2×4=567

=44+4=667÷6

5 0
3 years ago
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