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joja [24]
2 years ago
7

21. The​ solution(s) is/are b =Please help me solve this

Mathematics
2 answers:
Reil [10]2 years ago
6 0

Answer:

<u>b = -4, 0</u>

Step-by-step explanation:

<u>Given</u> :

  • b² + 4b = 0

<u>Take b as a common factor.</u>

  • b(b + 4) = 0

<u>Solutions</u>

  • b = 0
  • b + 4 = 0 ⇒ b = -4
  • <u>b = -4, 0</u>
worty [1.4K]2 years ago
4 0

Answer:

b = - 4, b = 0

Step-by-step explanation:

b² + 4b = 0 ← factor out b from each term

b(b + 4) = 0

equate each factor to zero and solve for b

b = 0

b + 4 = 0 ⇒ b = - 4

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This week laptops are 25 percent off if a laptop cost $340 what is it's sale price
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The sale price is 255 dollars.
To get the answer you find out that ten percent of 340 is 34 dollars. then you double the percentage which brings you to 68 dollars. but you still have 5 percent left over. Half of the ten percent is 17 dollars. finally you add 68 plus 17 which gives you 84 dollars. Lastly subtract 84 dollars from 340 which gives you 255

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3 0
3 years ago
Read 2 more answers
Paul wanted to bring his family to the Children’s Museum. There was an exhibit with carnival rides. The tickets for each ride we
Nostrana [21]

We want to define and solve a linear equation to model the given case.

The answers are:

a) x = number of tickets, y = total cost.

b) y = $1.35*x + $6.35

We know that:

The tickets for each ride were $1.35 per ticket.

Paul purchased 30 tickets

He spent a total of $46.85 (on tickets and admission)

The cost for the 30 tickets is:

30*$1.35 = $40.50

a) Now we can define two variables:

y = total cost

x = number of tickets

b) the linear equation would be:

y = $1.35*x + P

Where P is the price of admission.

And we know that the total cost for 30 tickets is $46.85, then we have:

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So the admission price is $6.35

This means that the linear equation is:

y = $1.35*x + $6.35

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If you want to learn more, you can read:

brainly.com/question/13738061

3 0
2 years ago
You walk an average of 3.2 miles per hour on the way to school and at an average of 4 miles per hour on the way home the total w
7nadin3 [17]
The answer to this question is:
You walk an average of 3.2 miles per hour on the way to school and at an average of 4 miles per hour on the way home the total walking time is 18 minutes how far away is the school Round your answer to the nearest hundredth of a mile
<span>.53 mi 
</span><span>.133 hrs

Hope This Helped, Markadoodle
Your Welcome :)
</span>
8 0
3 years ago
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