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zzz [600]
3 years ago
14

70 points for 7 questions answer. math...please and thank you

Mathematics
2 answers:
a_sh-v [17]3 years ago
7 0

Answer:

6. Actual length is 8 mm.

7. 13

8. 4

9. x=12

10. y=4

11. a=-3

12. y=-5

Step-by-step explanation:

miskamm [114]3 years ago
5 0

Answer:

Yeah

Step-by-step explanation:

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Lilly estimated a quotient of 120 and found an actual quotient of 83. what should she do next? explain.
lubasha [3.4K]

After she worked out the problem, she had a discrepancy (disagreement) of
about 45% between her estimate and the quotient. 

That's a lot !  There's almost definitely a major mistake somewhere, and
there really isn't any way to tell whether the mistake is in the estimate or
in the quotient. 

My answer to the question is that Lilly has to go all the way back to the
beginning, and do the whole thing again. Only this time, she has a harder
job to do:  She not only has to make another estimate and work out the
division problem again.  This time, she also has to find the mistake that
she made the first time ... and there may be more than one of them.


3 0
3 years ago
A term describing a division of observations into four
topjm [15]

Answer:

The name of this term is a quartile.

3 0
2 years ago
What are the values?
zavuch27 [327]

The average of a set of numbers

Step-by-step explanation:

An Example: 4×3 gives you the value of 12.

6 0
3 years ago
Read 2 more answers
Given the sequence in the table below, determine the sigma notation of the sum for term 4 through term 15. N an 1 4 2 −12 3 36 t
Rzqust [24]

By applying basic property of Geometric progression we can say that sum of 15 terms of a sequence whose first three terms are 5, -10 and 2 is                    \sum_{n=4}^{15} 5(-2)^{n-1}$$  

<h3>What is sequence ?</h3>

Sequence is collection of  numbers with some pattern .

Given sequence

a_{1}=5\\\\a_{2}=-10\\\\\\a_{3}=20

We can see that

\frac{a_1}{a_2}=\frac{-10}{5}=-2\\

and

\frac{a_2}{a_3}=\frac{20}{-10}=-2\\

Hence we can say that given sequence is Geometric progression whose first term is 5 and common ratio is -2

Now n^{th}  term of this Geometric progression can be written as

T_{n}= 5\times(-2)^{n-1}

So summation of 15 terms can be written as

\sum_{n=4}^{15} T_{n}\\\\$\\$\sum_{n=4}^{15} 5(-2)^{n-1}$$

By applying basic property of Geometric progression we can say that sum of 15 terms of a sequence whose first three terms are 5, -10 and 2 is                    \sum_{n=4}^{15} 5(-2)^{n-1}$$  

To learn more about Geometric progression visit : brainly.com/question/14320920

8 0
2 years ago
Simply the problem.
Marat540 [252]

Answer:

C

Step-by-step explanation:

\sqrt{3}\cdot\sqrt{21}= \\\\\sqrt{3\cdot 21}= \\\\\sqrt{63}= \\\\3\sqrt{7}

Therefore, the correct answer is choice C. Hope this helps!

6 0
3 years ago
Read 2 more answers
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