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skad [1K]
3 years ago
13

Julia has correctly answered 35 questions from a test, which is 7/12 of the total. How many questions did the test have?

Mathematics
1 answer:
otez555 [7]3 years ago
4 0

Answer:

There are 60 questions on the test

Step-by-step explanation:

Hope this helps :)

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Let r and s be the roots of x^2 - 6x + 2 = 0. Find (r - s)^2.
Sphinxa [80]

Answer: (r-s)^{2} = 28

Step-by-step explanation:

  • x^{2} -6x+9=-2+9
  • (x-3)^{2}=7
  • (x-3)= -\sqrt{7} or \sqrt{7} <-- there's no plus/minus sign.
  • (x-3) = -\sqrt{7}
  • x = 3 -\sqrt{7} <-- root.
  • (x-3) = \sqrt{7}
  • x = 3+\sqrt{7} <-- root.
  • [(3-\sqrt{7})-(3+\sqrt{7})]^{2}
  • (3-\sqrt{7} -3 - \sqrt{7})^{2} <-- don't forget to distribute the negative.
  • (-2\sqrt{7})^{2}
  • (4)(7)
  • 28
4 0
3 years ago
Find the value of x?​
Arisa [49]

Answer:

x = 5

Step-by-step explanation:

x + 5 = \frac{1}{2}(x^{2} - x)    {Midpoint theorem}

2(x+ 5) = x² - x

2x + 10 = x² - x

x² - x - 2x - 10 = 0

x² - 3x - 10 = 0

x² - 5x + 2x - (5*2) = 0

x(x - 5) + 2(x - 5) = 0

(x -5)(x + 2) = 0

{x + 2 is ignored because measurement could not be in negative value}

x - 5 = 0

x = 5

5 0
3 years ago
More of my brothers wwork for yalll have fun and tysm!
IceJOKER [234]
Answer: 3/4 x 48
3 x 12
= 36

Got 12 by reducing the numbers with the Greatest Common Factor (GCF) 4
5 0
3 years ago
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− 4 x + 12 −4x+12 y=x
Lelu [443]

Answer:

3x-4y=4

Step-by-step explanation:

7 0
3 years ago
What type of parallelogram has
zlopas [31]

Answer:

Rhombus

Step-by-step explanation:

  • Parallelogram is a quadrilateral .
  • It has both 2pairs parallel and congruent.
  • Opposite sides are same

6 0
3 years ago
Read 2 more answers
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