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dimulka [17.4K]
3 years ago
5

On her first quiz in social studies, Meg answered 92% of the questions correctly. On her second quiz, she answered 27 out of 30

questions correctly.
On which quiz did Meg have the better score?
Mathematics
2 answers:
madam [21]3 years ago
8 0
There both the same score. she has the same score on each test. i hope this helps:)
Maru [420]3 years ago
6 0
27 out of 30.27 out of 30 islarger

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Write a quadratic equation with the given roots. Write the equation in the form of ax^2+bx+c=0 where a b and c are integers
Bas_tet [7]

You haven't provided the required roots, but I can tell you how to do this kind of exercises in general.

If the x^2 coefficient is 1, i.e. the equation is written like x^2+bx+c=0, then you can say the following about the coefficients b and c:

  • b is the opposite of the sum of the roots
  • c is the multiplication of the roots.

So, for example, if we want an equation whose roots are 4 and -2, we have:

  • 4+(-2) = 4-2 = 2 \implies b = -2
  • 4 \cdot (-2) = -8 \implies c = -8

So, the equation is x^2-2x-8=0

If your roots are rational, you can work like this: suppose you want an equation with roots 3/4 and 1/2. You have:

  • \dfrac{3}{4}+\dfrac{1}{2} = \dfrac{3}{4}+\dfrac{2}{4} = \dfrac{5}{4} \implies b = -\dfrac{5}{4}
  • \dfrac{3}{4} \cdot \dfrac{1}{2} = \dfrac{3}{8} \implies c = \dfrac{3}{8}

And so the equation is

x^2 - \dfrac{5}{4} + \dfrac{3}{8} = 0

In order to have integer coefficients, you can multiply both sides of the equation by 8:

8x^2 - 10 + 3 = 0

5 0
3 years ago
the corresponding side of two rectangular swimming pools are 66 feet and 44 feet if the perimeter of the larger pool is 198 feet
morpeh [17]
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5 0
2 years ago
Y = 4x - 6
aalyn [17]

Answer: Plug y into the bottom equation

Step-by-step explanation:

It’s simple! You are given the value of y and the easiest step would just be to plug y in.

Hope this helps!

7 0
3 years ago
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Answer:

A ≈ 78.5

Your answer was wrong because it said to round to the nearest tenth.

Step-by-step explanation:

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Area of a circle is:

A = πr²

A = π (5)²

Following PEMDAS (order of operations), you would do the exponent first:

A = π (25)

A ≈ 78.5

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2 years ago
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I believe it is 15. Hope that helps!
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