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3 years ago

HELP ME PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE

Mathematics

1 answer:

Nimfa-mama [501]3 years ago

8 0

Answer:

19y+5

Step-by-step explanation:

Combine like terms look for all the numbers that have y attached and combine them

7y +12y=19y

Look for terms where nothing is attached it's just the number combine them

6-1=5

Put all together again and you get:

19y+5

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2 years ago

What is 1 4th of 10 explain

Nat2105 [25]

I have seen you ask this question twice before, so I will give you the answer that HugoD gave you:

In mathematics, "of" is translated as a multiplication.

So, you have : $\frac{1}{4} * 10 = \frac{10}{4} = 2, 5$ .

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3 years ago

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What is the nth term?

kumpel [21]

Let $a_k$ denote the kth term of the sequence. Then

$a_k=a_1+d(k-1)$

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$S_n=\displaystyle\sum_{k=1}^na_k=a_1+a_2+\cdots+a_{n-1}+a_n$

From the formula for $a_k$ , we get

$S_n=\displaystyle\sum_{k=1}^n(a_1+d(k-1))=a_1\sum_{k=1}^n1+d\sum_{k=1}^n(k-1)$

$S_n=\displaystyle na_1+d\sum_{k=0}^{n-1}k$

$S_n=na_1+\dfrac{d(n-1)n}2$

$S_n=\dfrac n2(2a_1-d+dn)$

So we have $d=-5$ , and $2a_1-d=16$ so that $a_1=\frac{11}2$ .

Then the nth term in the sequence is

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3 years ago

Help with numbers 5-10

zaharov [31]

the answer of this equation is -5

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2 years ago

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Viktor [21]

Answer:

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Step-by-step explanation:

4 is in the hundredths place. It is less than 5 so you leave the tenths place alone, so you get 3.2.

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3 years ago

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