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Oduvanchick [21]
2 years ago
6

Write the quadratic equation in standard form: 7x + 8 + 2x2 2x + 1 + x2

Mathematics
1 answer:
JulsSmile [24]2 years ago
5 0

Answer:

3x^2 + 9x  +9

Step-by-step explanation:

Given

(7x + 8 + 2x^2) + (2x + 1 + x^2)

Required

The result in standard form

We have:

(7x + 8 + 2x^2) + (2x + 1 + x^2)

Remove brackets

7x + 8 + 2x^2 + 2x + 1 + x^2

Collect like terms

7x+ 2x  + 8 + 1 + 2x^2+ x^2

9x  + 9+ 3x^2

The standard form of a quadratic equation is:

ax^2 + bx + c

So, we have:

9x  + 9+ 3x^2

3x^2 + 9x  +9

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What is 3/13 of 91 ?
Lunna [17]

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▹ Answer

<em>21</em>

▹ Step-by-Step Explanation

3/13 x 91/1

91/13 = 7

3/1 = 3

3 * 7 = 21

Hope this helps!

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4 0
2 years ago
Somebody please help me!
Ierofanga [76]

Method:

First place the replace of p and r using brackets.

= 3(6) + 11.7(7)

3 times 6 is 18 and 11.7 times 7 is 81.9

= 18 + 81.9

add one and one together you get

= 99.9

<em>hope </em><em>it </em><em>helps</em>

6 0
3 years ago
If a man hold his breath for three minutes and dies because of it what is that called
miss Akunina [59]

Answer:

Holding your breath is called static Apnea and a common person can't hold their breath for long. If a person holds their breath for long and dies because of it, it may be called lack of breath or lack of respiration.

6 0
3 years ago
What was the error in this equation?
PtichkaEL [24]

Answer:

The error is the solution.

The solution is all real numbers, or infinite amount of solutions.

Step-by-step explanation:

Step 1: Write equation

-4(2n - 3) = 12 - 8n

Step 2: Solve for <em>n</em>

  1. <u>Distribute -4:</u> -8n + 12 = 12 - 8n
  2. <u>Subtract 12 on both sides:</u> -8n = -8n
  3. <u>Add 8n to both sides:</u> 0 = 0

Here we see that <em>n</em> can equal any number. If you plug in any number <em>n</em>, it will render the equation true. Therefore, our solution is n = infinite amount of solutions.

n = 0 is only slightly correct. 0 does work as the solution, but there are solutions as well.

3 0
2 years ago
I am just confused can someone help please...
prohojiy [21]
The answer is B

sin=Opposite/Hypotenuse

sin=28/100

Divide numerator and denominator by 4

sin=7/25


Cosine=adjacent/hypotenuse

cos=96/100

Divide numerator and denominator by 4

cos=24/25


Tangent=opposite/adjacent

tan=28/96

Divide numerator and denominator by 4

tan=7/24

4 0
2 years ago
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