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2 years ago

Round 639 to the nearest ten

Mathematics

2 answers:

Murrr4er [49]2 years ago

7 0

The answer is 639= 640

anyanavicka [17]2 years ago

6 0

640. the answer would be 640

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If y varies inversely as x, when y=20 and x=2 find the equation for y. then, find y when x=4

Tema [17]

Answer:

the equation for y=20=1/2

Step-by-step explanation:

y=1/4

y=0.25

3 0

2 years ago

Given:

Goryan [66]

Answer:

a.Converge

b.Diverge

Step-by-step explanation:

We are given that

$A_n=\frac{6n}{-4n+9}$

$\lim_{n\rightarrow \infty}A_n=\lim_{n\rightarrow \infty}\frac{6n}{-4n+9}=\frac{6n}{n(-4+\frac{9}{n})}$

$\lim_{n\rightarrow \infty}\frac{6}{-4+\frac{9}{n}}=\frac{6}{-4}=\frac{-3}{2}$

Because $\frac{9}{\infty}=0$

Hence, sequence An converges to $\frac{-3}{2}$ when n tends to infinity or - infinity.

$\sum_{n=1}^{\infty}An=\sum_{n=1}^{\infty}\frac{6n}{-4n+9}$ =diverges

Necessary condition for a series to converge :

$an\rightarrow 0$ when n tends to infinity .

But $A_n$ tends to $\frac{-3}{2}$ when n tends to infinity.

Therefore, given series is divergent.

5 0

2 years ago

Can someone find this out please and thank you!

vredina [299]

-7 replaces the t so it would be

w(-7) = -2(-7)+1
= 14+1
= 15

3 0

3 years ago

You are asked to create a solution that is 3 parts water and 2 parts bleach. You have 4 liters of bleach. How much water should

kifflom [539]

Step-by-step explanation:

If this is 3L water : 2L bleach then this following measures and answers are the answer.

3L:2L

?L:4L

4L/2L= 2L

so therefore

3L* 2L = 6L

6L water : 4L bleach

6L water

6 0

2 years ago

Idk how to do this please help...

Alex Ar [27]

To find the unit rate for 5 you would do price/amount
So 5.75/40=.14375 this rounds down to .14
Therefore the correct answer would be B

For 6 the unit rate is the same, meaning you would have to do price/amount, so 2.99/8=.37375 which rounds to .37
So the correct answer is B

6 0

3 years ago