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bazaltina [42]
3 years ago
11

Determine all zeros (x2+2x-8)

Mathematics
1 answer:
svlad2 [7]3 years ago
3 0

Answer:

the answer is x= 2,-4

Step-by-step explanation:

zeros = 2, -4

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Can I get help ? It counts as 50% as my grade lol. I got more ..
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Using proportions, the number of 1/4 cup servings that she can make is given by:

B. 3 and 5/9.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.

For this problem, considering that Susie has 8/9 of a cup, the following <u>rule of three</u> is established:

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x servings - 8/9 cups

Applying cross multiplication:

\frac{x}{4} = \frac{8}{9}

9x = 32

x = 32/9

Since 32 divided by 9 has quotient 3 with remainder 5, the correct option is given by:

B. 3 and 5/9.

More can be learned about proportions at brainly.com/question/24372153

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6 0
1 year ago
7+6 (mod 5) =<br><br>2+1 (mod 5) =<br><br>20 (mod 11) =<br><br>35 (mod 11) =<br><br>20 (mod 11) =​
ValentinkaMS [17]

Answers:

  • 3
  • 3
  • 9
  • 2
  • 9

======================================

Explanation:

7+6 = 13. Divide this over 5 to get 13/5 = 2 remainder 3. The quotient 2 is something we don't care about. <u>We only worry about the remainder</u>. Therefore 7+6 = 3 (mod 5)

-------------

2+1 = 3 (mod 5) for similar reasoning as above. 3/5 = 0 remainder 3.

-------------

20 = 9 (mod 11) since 20/11 = 1 remainder 9. Imagine you had 20 cookies and 11 friends. Each friend would get 1 whole cookie (quotient) and there could be 9 left over (remainder).

-------------

35/11 = 3 remainder 2

Or you could use repeated subtraction like so to find the remainder

35-11 = 24

24-11 = 13

13-11 = 2

The last result (2) is smaller than 11, so we stop here and this is the remainder.

Therefore, 35 = 2 (mod 11)

--------------

Here's another way to think of it. Consider you have $35 in your pocket. Let's say a store is selling trinkets for $11 each. We can pose these key questions:

  • What is the most number of trinkets you can buy?
  • If you buy that max amount, how much will you have left over?

The answer to the first question is 3 trinkets because 3*11 = 33 dollars is under the budget of $35. The amount left over is 35-33 = 2 dollars which is the remainder. It's not larger than 11, so we cannot buy any more trinkets at this point.

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Have a Great Day!!!!

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