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4 years ago

Find the sum of these polynomials (x^2-x+7) +(9x^2+6)=

Mathematics

2 answers:

Nataliya [291]4 years ago

8 0

Answer:-3

Step-by-step explanation:

MAVERICK [17]4 years ago

7 0

$10 {x}^{2} - x + 13$

simply add like terms

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Find the 100th and the nth term for each of the following sequences.80,140,200

Alina [70]

Answer

a(n) = 60n + 20

a(100) = 6020

Step-by-step explanation:

Given the following sequences

80, 140, 200

$\begin{gathered} \text{The given sequence is }80,\text{ 140, 200} \\ \text{Step 1: find the common difference} \\ \text{common difference= next term - previous term} \\ \text{Common difference = 140 - 80} \\ \text{Common difference = 60} \\ \text{common difference = 200 - 140} \\ \text{common difference = 60} \\ \text{Hence, the common difference is 60} \\ \text{The nth term of an arithmetic progression is} \\ a(n)\text{ = a + (n - 1) x d} \\ \text{where a = first term, n = no of terms, and d = common difference} \\ a(n)\text{ = 80 + (n - 1) x 60} \\ \text{open the parenthesis} \\ a(n)\text{ = 80 + 60n - 60} \\ a(n)\text{ = 60n + 80 - 60} \\ a(n)\text{ = 60n + 20} \\ \\ \text{ Find the 100th term} \\ \text{let n = 100} \\ a(100)\text{ = 60(100) + 20} \\ a(100)\text{ = 6000 +2}0 \\ a(100)\text{ = 6020} \end{gathered}$

7 0

1 year ago

What is the complex conjugate of -2 + 3i?

marta [7]

It’s 4.5 to go down to my -790

8 0

3 years ago

If the perimeter of a rectangle is 60cm how do I form an equation and solve it to find x?

ycow [4]

X = 15

Perimeter of a rectangle is 2(l+w) = 2 ( 15+15) = 2 (30)

8 0

3 years ago

Max has three pieces of oak trim that are 7 inches, 11 inches, and 18 inches long. He wants to use them to make a triangular bas

sweet [91]

Answer:

Step-by-step explanation:

Use triangle inequality theorem, which states

"The sum of the lengths of any two sides of a triangle is greater than the length of the third side."

The sum of two sides compared to the remaining side:

7 + 11 = 18 = 18 - not ok
7 + 18 = 25 > 11 - ok
11 + 18 = 29 > 7 - ok

The sum of two sides is equal to the third side. This makes it impossible to make a triangle. Therefore the answer is no.

6 0

3 years ago

What is the square root of 10x times square root of 2x

PIT_PIT [208]

Answer: 2x√5

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers