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2 years ago

I really need help with this since it’s practice for my midterms

Mathematics

2 answers:

Eduardwww [97]2 years ago

6 0

Answer:

It is D

Step-by-step explanation:

xz_007 [3.2K]2 years ago

4 0

Answer:

Step-by-step explanation:

Evaluate the fractions inside the absolute value

2 $\frac{5}{6}$ + $\frac{7}{4}$ ( change mixed number to improper fraction )

= $\frac{17}{6}$ + $\frac{7}{4}$ ( the LCM of 6 and 4 is 12 ) , then

= $\frac{17(2)}{6(2)}$ + $\frac{7(3)}{4(3)}$

= $\frac{34}{12}$ + $\frac{21}{12}$ ( add the numerators, leaving the common denominator )

= $\frac{55}{12}$

= 4 $\frac{7}{12}$ → D

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Mila [183]

Answer:

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Step-by-step explanation:

hope this helps! happy new year! can i pls be brainliest?

7 0

2 years ago

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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

What is the product of 2p + q and –3q – 6p + 1?

photoshop1234 [79]

<span>(2p + q) ( –3q – 6p + 1)
= -6pq - 12p^2 + 2p - 3q^2 - 6pq + q
= -12p^2 -12pq +2p -3q^2 + q

so answer is b. </span> -12p^2 -12pq +2p -3q^2 + q

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2 years ago

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MakcuM [25]

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