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Semmy [17]
2 years ago
6

Can someone plz help me. I dont know what to do or what it is​

Mathematics
1 answer:
UkoKoshka [18]2 years ago
8 0
I think its 31 but im not 100% sure :)
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Tom received an allowance of $300 for his upcoming trip to Canada. He knows that he will spend $15 each day on food. Which equat
WARRIOR [948]

Answer:

m=15d-300

Step-by-step explanation:

4 0
3 years ago
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Suppose that in the use of polynucleotide phosphorylase, nucleotides a and c are added in a ratio of 1a:5c. what is the probabil
Svetllana [295]

There is a 1 in 15 chance it could occur. The more numbers you add, the rarer the chance. This does not guarantee that it will occur in 15 tests.

4 0
3 years ago
Write the series using summation notation.<br><br> 4 + 8 + 12 + 16 + 20+ . . . + 80
zhannawk [14.2K]

Answer:

\sum ^{20} _{n \to \11} 4n

Step-by-step explanation:

In order to write the series using the summation notation, first we need to find the nth term of the sequence formed. The sequence generated by the series is an arithmetic sequence as shown;

4, 8, 12, 16, 20...80

The nth term of an arithmetic sequence is expressed as Tn = a +(n-1)d

a is the first term = 4

d is the common difference = 21-8 = 8-4 = 4

n is the number of terms

On substituting, Tn = 4+(n-1)4

Tn = 4+4n-4

Tn = 4n

The nth term of the series is 4n.

Since the last term is 80, L = 4n

80 = 4n

n = 80/4

n = 20

This shows that the total number of terms in the sequence is 20

According to the series given 4 + 8 + 12 + 16 + 20+ . . . + 80 , we are to take the sum of the first 20terms of the sequence. Using summation notation;

4 + 8 + 12 + 16 + 20+ . . . + 80  = \sum ^{20} _{n \to \11} 4n

4 0
3 years ago
Find the sum and express it in simplest form. (-y + 5a - 4) + (-3y - a - 5)
netineya [11]
(-y + 5a - 4) + (3y - a - 5) is simplified to 2y + 4a - 11
3 0
3 years ago
Read 2 more answers
I really need help asap with this math homework,<br> It is due tonight.
boyakko [2]

Answer:1920

Step-by-step explanation:

Sorry if this is not accurate but here is how your gonna do it

Find the constant speed per hour (The quotient is 80) then multiply that by 24 which you will get 1920 Hopefull this helps and its correct :D

7 0
3 years ago
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