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never [62]
3 years ago
6

This diagram shows four small squares and one rectangle composed of 10 small.

Mathematics
1 answer:
horsena [70]3 years ago
4 0

9514 1404 393

Answer:

  (A) yes; each small square could represent 10 units

  (B) no; there are a total of 14 small squares. No reasonable relationship maps this to 410

Step-by-step explanation:

(A) The total number of small squares is 14, so we expect any number represented by the diagram to be a multiple of 14. If each small square represents 10 units, then the 4 small squares represent 40 units, and the rectangle represents 100 units, for a total of 140 units being represented in the diagram. Andre is correct.

__

(B) The above argument suggests that 410 will not be reasonably represented by the diagram. To represent 410, we expect 4 tokens that each represent 10 of a smaller token. The rectangle of 10 squares would be such a token, but the diagram has only one of those, not 4 of them. Similarly, we expect 1 of a smaller token, but the diagram has 4 of them. In any event, 410 is not a multiple of 14, so there is no (integer) value that can be assigned to a small square that lets the diagram represent 410.

I do not agree with Diego.

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I’ve noticed here are around 4 ways to solve a Quadratic Equation. Factoring, Completing the square, The quadratic Formula, and
valentina_108 [34]

Answer:

See explanation

Step-by-step explanation:

Usually, I just find the quadratic formula the easiest to go, but here are some tips to tell if which you should use.

1. First see if you can get integer values for the roots to multiply to c and add to b.

This is the easiest way to solve a quadratic equation, and I always check for whether I can easily find the roots by multiply two numbers for c and adding them for b.

For instance, the Quadratic x^2 + 5x + 6

I can easily see that 2 and 3 are the roots here - as 2\cdot3=6 and 2+3=5. If you can do this and receive integer values, then great! I'd definitely stick with this.

2. See if you can complete the square

If you have a quadratic which is a perfect square, you'll be able to tell if c is a perfect square, and b is twice that number. This will be easiest. <em>Any quadratic equation can be solved by completing the square</em><em>, </em>but I personally stick to this method only if I can tell it's a perfect square quadratic.

3. Stick to the Quadratic Formula

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I really hope this helped!

5 0
4 years ago
Read 2 more answers
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Montano1993 [528]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
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The sum of two numbers is 61, the difference is 35. What are the numbers?
saveliy_v [14]

Answer:

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Step-by-step explanation:

Hope that helps!

4 0
3 years ago
400,000+60,000+5,000+100 in word form
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3 0
3 years ago
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A tool box contains 12 bolts and 10 nuts. If a handyman grabs 8 items randomly, what is the probability that he gets four bolts
belka [17]

Answer:

(c) 0.325

Step-by-step explanation:

Given,

The number of bolts = 12,

Numbers of nuts = 10,

Total items = 12 + 10 = 22

Thus, the number of ways of choosing 8 items out of 22 items = C(22,8)

Now, the number of ways of choosing 4 bolts and 4 nuts = C(12, 4) × C(10, 4)

Hence, the probability of getting four bolts and four nuts

=\frac{\text{ways of choosing 4 nuts and 4 bolts}}{\text{Total ways of choosing 8 items}}

=\frac{C(12,4)\times C(10,4)}{C(22, 8)}

=\frac{\frac{12!}{4!8!}\times \frac{10!}{4!6!}}{\frac{22!}{8!14!}}

=\frac{495\times 210}{319770}

=0.325077399381

\approx 0.325

Therefore, option (c) is correct.

4 0
4 years ago
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