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3 years ago

640 rounded to the nearest tens

Mathematics

2 answers:

Reptile [31]3 years ago

6 0

It is rounded to the nearest tens. You can only round when you have 1,9. Hope I helped

olasank [31]3 years ago

6 0

Answer:

It's already rounded - the ones place is a 0

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Tamika ran 120 meters in 21.6 seconds. Enrique ran 120 meters in 22.4

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3 years ago

Use algebra to simplify the expression before evaluating the limit. In particular, factor the highest power of n from the numera

bija089 [108]

Answer:

a) {2/n²-7/n+9}/{8+2/n-6/n²}

b) 9/8

c) The sequence converges

Step-by-step explanation:

Given the limit of the function

limn→[infinity]2−7n+9n²/8n²+2n−6

To simplify the function given, we will have to factor out the highest power of n which is n² from the numerator and the denominator. The function will then become;

2−7n+9n²/8n²+2n−6

= n²{2/n²-7/n+9}/n²{8+2/n-6/n²}

The n² at the numerator will then cancel out the n² at the denominator to have resulting simplified equation as;

{2/n²-7/n+9}/{8+2/n-6/n²}

Evaluating the limit of the resulting equation will give;

limn→[infinity] {2/n²-7/n+9}/{8+2/n-6/n²}

Note that limn→[infinity] a/n = 0 where a is any constant.

Therefore;

limn→[infinity] {2/n²-7/n+9}/{8+2/n-6/n²}

= (0-0+9)/(8+0-0)

= 9/8

Since the limit of the sequence gives a finite value which is 9/8, thus the sequence in question is a convergent sequence.

The limit of a sequence only diverges if the limit of such sequence is an infinite value.

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4 years ago

Whats the answer to 7c+12c-2=

Aloiza [94]

Answer:

19c-2

Step-by-step explanation:

photomath

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4 years ago

I WILL MAKE YOU BRAINIST

nekit [7.7K]

Answer:

234

Step-by-step explanation:

We want to find the summation from n = 2 to n = 10 of the equation -4 + 5n.

We can use the summation formula:

$S=\frac{(a_1+a_n)*n}{2}$ , where a1 is the first term, $a_n$ is the last term, and n is the number of terms

Here, we can say the first term occurs when n = 2:

-4 + 5n

-4 + 5 * 2 = -4 + 10 = 6

The last term will be when n = 10:

-4 + 5n

-4 + 5 * 10 = -4 + 50 = 46

The number of terms is just 10 - 2 + 1 = 9 terms.

Substitute these in:

$S=\frac{(a_1+a_n)*n}{2}$

$S=\frac{(6+46)*9}{2}=\frac{468}{2} =234$

Thus, the answer is 234.

8 0

3 years ago

What is the answer to the question?

Anuta_ua [19.1K]

Answer:

Given : PQ = RQ

to find : angle B

PQ = RQ
Angle B = angle QRP ( angle opposite to equal side are equal). ...(1)
angle QRP + 140° = 180° ( linear pair)
angle QRP = 180° - 140°
angle QRP = 40°
from equation (1)
Angle B = angle QRP = 40°

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3 years ago

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