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ss7ja [257]
3 years ago
5

What is 2/5 + 1/9 I need help

Mathematics
1 answer:
Fantom [35]3 years ago
5 0
Find the LCD of both fractions and that is 45.

Make the denominators the same as the LCD

Simplify, now denominators are the same

join the denominators

simplify 

Answer: 23/45
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During the day,Sam spent $4.85 on lunch.he also bought 2 books for $7.95 each. At the end of the day we had $8.20 left how much
Vlada [557]
20.75 because if you add 4.85+7.95+7.95 add that you get 20.75

7 0
3 years ago
Which formula can be used to find the nth term of a geometric sequence where the fifth term is 1/6 and the common ratio is 1/4?
OlgaM077 [116]

Answer:

a_n = 16(\frac{1}{4})^{n - 1}

Step-by-step explanation:

Given:

Fifth term of a geometric sequence = \frac{1}{16}

Common ratio (r) = ¼

Required:

Formula for the nth term of the geometric sequence

Solution:

Step 1: find the first term of the sequence

Formula for nth term of a geometric sequence = ar^{n - 1}, where:

a = first term

r = common ratio = ¼

Thus, we are given the 5th term to be ¹/16, so n here = 5.

Input all these values into the formula to find a, the first term.

\frac{1}{16} = a*\frac{1}{4}^{5 - 1}

\frac{1}{16} = a*\frac{1}{4}^{4}

\frac{1}{16} = a*\frac{1}{256}

\frac{1}{16} = \frac{a}{256}

Cross multiply

1*256 = a*16

Divide both sides by 16

\frac{256}{16} = \frac{16a}{16}

16 = a

a = 16

Step 2: input the value of a and r to find the nth term formula of the sequence

nth term = ar^{n - 1}

nth term = 16*\frac{1}{4}^{n - 1}

a_n = 16(\frac{1}{4})^{n - 1}

3 0
3 years ago
Write an expression that shows how to multiply 7×256
rewona [7]
Hello! what I like to do is multiply by 10s and subtract the difference, so one thing you could do is 10x256-(3x256)! your final answer will be 1792, hope this helped! ;)
3 0
3 years ago
How do I do these? I don’t need the answers to them, I would just like to know how I go about solving them, thank you in advance
Sindrei [870]
Convert the percentage into a number then divide it by the income.
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3 years ago
When we use a number line, we ask ourselves where do we place the....?
Charra [1.4K]
0 or dot, depending on what course you are taking

8 0
3 years ago
Read 2 more answers
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