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3 years ago

At school 95% of students arrive on time.If there are 200 students how many are expected to be late

Mathematics

2 answers:

Inessa [10]3 years ago

8 0

10 students will be late.

ehidna [41]3 years ago

5 0

Answer:

<h2>10 students (late)</h2><h2></h2>

Step-by-step explanation:

total students = 200

95% of students arrived on time

5% of students were late.

95% x 200 = 190 students (on time)

5% x 200 = 10 students (late)

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

200 students

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3 years ago

The sum of two number is 42 and it's different is a 8. find the number?

NeTakaya

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Step-by-step explanation:

Let X and Y be the two numbers.

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

X + Y = 42 [sum of two numbers is 42]

X - Y = 8 [their difference is 8]

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

Rearrange the last equation to

X = 8 + Y

Now enter that into the 1st equation:

X + Y = 42

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2Y = 34

Since X - Y = 8,

X = 8 + 17

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X + Y = ?

17 + 25 = 42 <em>Checks</em>

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2 years ago

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2 years ago

What are the roots for the equation x^2-2x+37=0 in simplest a+bi form

Gnesinka [82]

$\boxed{x_{1}=1+6i} \\ \\ \boxed{x_{2}=1-6i}$

<h2>Explanation:</h2>

Since we need to write the roots in the simplest form:

$a+bi$

It is obvious that the roots are complex. To solve this, let's use the quadratic formula. For the Standard Equation:

$ax^2+bx+c=0$

The Quadratic Formula is:

$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a} \\ \\ Here: \\ \\ x^2-2x+37=0 \\ \\ So: \\ a=1 \\ b=-2 \\ c=37 \\ \\ x=\frac{-(-2)\pm \sqrt{(-2)^2-4(1)(37)}}{2(1)} \\ \\ x=\frac{2\pm \sqrt{4-148}}{2} \\ \\ x=\frac{2\pm \sqrt{-144}}{2} x=\frac{2\pm \sqrt{-1}\sqrt{144}}{2} \\ \\ x=\frac{2\pm 12\sqrt{-1}}{2} \\ \\ but \ \sqrt{-1}=i \\ \\ Two \ solutions: \\ \\ x_{1}=\frac{2+12i}{2} \\ \\ \boxed{x_{1}=1+6i} \\ \\ x_{2}=\frac{2-12i}{2} \\ \\ \boxed{x_{2}=1-6i}$

Real Roots: brainly.com/question/13740312#

#LearnWithBrainly

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3 years ago

2 What is the equation of the axis of symmetry of the

mixas84 [53]

Answer:2

Step-by-step explanation:

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2 years ago

Read 2 more answers