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3 years ago

Solve x^2 + 5x - 6 = 0

1 answer:

4 0

Let's solve your equation step-by-step. x2+5x−6=0

Step 1: Factor left side of equation. (x−1)(x+6)=0

Step 2: Set factors equal to 0. x−1=0‌‌ or ‌‌x+6=0

x=1‌‌ or ‌‌x=−6

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Solve for x, rounding to the nearest hundredth.

Andreas93 [3]

Answer: x=1.32
Hope this helps!

6 0

1 year ago

It is known that 10% of the calculators shipped from a particular factory are defective. What is the probability that exactly th

IRINA_888 [86]

Answer:0.0081 or 0.81%

Step-by-step explanation:

The required probability is P(3,5,0.1)= C5 3 * p^3*q^2, where

C5 3= 5!/3/2=4*5/2=10

p is the probability that one randomly selected calculator is defective= 10%=0.1

q is the probability that one randomly selected calculator is non-defective.

q=1-p=1-0.1=0.9

So P(3,5,0.1)= 10*0.1^3*0.9^2=0.01*0.81=0.0081

4 0

2 years ago

Find the first four terms of the sequence An=2a n-1,where a1=3

yKpoI14uk [10]

The first four terms of the sequence are 3 , 6 , 12 , 24

Step-by-step explanation:

We need to find the first four terms of the sequence $a_{n}=2a_{n-1}$

where $a_{1}=3$ to find them do that

Substitute n by 2 in the rule to find $a_{2}$
Substitute n by 3 in the rule to find $a_{3}$
Substitute n by 4 in the rule to find $a_{4}$

∵ $a_{n}=2a_{n-1}$

- Substitute n by 2 to find the 2nd term

∴ $a_{2}=2a_{2-1}$

∴ $a_{2}=2a_{1}$

∵ $a_{1}=3$

∴ $a_{2}=2(3)$

∴ $a_{2}=6$

- Substitute n by 3 to find the 3rd term

∴ $a_{3}=2a_{3-1}$

∴ $a_{3}=2a_{2}$

∵ $a_{2}=6$

∴ $a_{3}=2(6)$

∴ $a_{3}=12$

- Substitute n by 4 to find the 4th term

∴ $a_{4}=2a_{4-1}$

∴ $a_{4}=2a_{3}$

∵ $a_{3}=12$

∴ $a_{4}=2(12)$

∴ $a_{4}=24$

The first four terms of the sequence are 3 , 6 , 12 , 24

Learn more:

You can learn more about the sequences in brainly.com/question/1522572

#LearnwithBrainly

3 0

3 years ago

Use the discriminate to determine the number and the nature of the solutions of the giving equation

netineya [11]

Answer: x-1/6

Step-by-step explanation:

3 0

3 years ago

What percent is 15 out of 500?

7nadin3 [17]

Answer:

Step-by-step explanation:

P% = 15/500

P = 0.03

P% = 0.03 * 100 = 3%

3 0

1 year ago

Read 2 more answers