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4 years ago

For the sequence below, identify the type of sequence and important features

Mathematics

1 answer:

Romashka-Z-Leto [24]4 years ago

7 0

Hey there!

The answer would be B. Geometric sequence with an initial value of 7 and a growth factor of 2. The first, or initial value is 7 in the sequence and each number is multiplied by 2 as the sequence goes on.

Hope this helps !

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13....................

Mashcka [7]

13.

(a)

$y=-5x^2+21x-3$

for x = 2:

$y=-5(2)^2+21(2)-3=-20+42-3=19$

for x = 5

$y=-5(5)^2+21(5)-3=-125+105-3=-23$

(b)

The graph is:

(c)

Using the graph:

$\begin{gathered} x=1.8,y=18.6 \\ x=0.548,y=7 \\ x=3.65,y=7 \end{gathered}$ $\begin{gathered} x=1.8 \\ y=-5(1.8)^2+21(1.8)-3=-16.2+37.8-3=18.6 \end{gathered}$ $\begin{gathered} y=7 \\ -5x^2+21x-3=7 \\ -5x^2+21x-10=0 \end{gathered}$

Using the quadratic formula:

$\begin{gathered} x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ x=\frac{-21\pm\sqrt[]{21^2-4(-5)(-10)}}{2(-5)} \\ x=\frac{-21\pm\sqrt[]{241}}{-10} \\ x=0.54758 \\ or \\ x=3.6524 \end{gathered}$

6 0

1 year ago

A lawnmower was purchased for rupees 1100 and rupees 50 were paid as transportation charges. It was sold at a 14% profit. Find i

nevsk [136]

Answer: 161 rupees.

Step-by-step explanation:

Use a percentage Calculator on the internet to find the solution.

1100 + 50

1150

(put into calculator)

7 0

4 years ago

5,111 ÷ 3 it wont show up on calculator

Mashcka [7]

Answer:

Step-by-step explanation:

In calculator the answer is 1703.66666667

3 0

3 years ago

Read 2 more answers

What frcation is equal to 4

Korolek [52]

The answer is D
Explanation 4 ones is 4

5 0

3 years ago

Please answer thank you !!!

BartSMP [9]

Answer:

-3x³ - 4x² + x - 9

Step-by-step explanation:

-5x³ + 2x² + x - 7

- <u>(-2x³ + 6x² + 0 + 2)</u> remember: when you subtract, you 'add the opposite'

-3x³ + (-4x²) + x + (-9)

8 0

3 years ago