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Andrei [34K]
3 years ago
12

What is 7+{[3+(25-5x2)]\3}

Mathematics
1 answer:
Sindrei [870]3 years ago
7 0
15 is the answer eazy i never said 13 
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GEOMETRY HELP ASAP!!!!!!!!!!!!!!!!!!!
vovangra [49]
Area of equilateral triangle = a^2/4 * √3 so side of triangle = a

but if area of equilateral triangle =  area of square multiplied by √3 then area of square = a^2 / 4 so side of square = a/2

the ratio length of side triangle to length side of square = a: a/2 that means the side of triangle is doubled the side of square

answer
a) 2:1
6 0
4 years ago
4
taurus [48]

Answer:

x^2 - 2x + 10, option B

Step-by-step explanation:

Complex numbers:

The most important relation that involves complex numbers is given by:

i^2 = -1

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = a(x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}

x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}

\bigtriangleup = b^{2} - 4ac

In this question:

The solutions are:

x_1 = 1 - 3i, x_2 = 1 + 3i

We have to find the polynomial. All option have a = 1. So

(x - (1 - 3i))(x - (1 + 3i)) = x^2 - x(1 + 3i) - x(1 - 3i) + (1 - 3i)(1 + 3i) = x^2 - x -3ix - x + 3ix + 1^2 - (3i^2) = x^2 - 2x + 1 - 9i^2 = x^2 - 2x + 1 - 9(-1) = x^2 - 2x + 10

The correct answer is given by option b.

6 0
3 years ago
You need to cover the playground of a child development center with mulch. The playground is 125 feet long and 60 feet wide. You
elixir [45]
1 foot = 12 inches
125 feet = 1,500 inches
60 feet = 720 inches
1,500 * 720 * 6 =
6,480,000 inches or 540,000 feet
7 0
4 years ago
The perimeter of a square is 56 cm. What is the approximate length of its diagonal? A.10.6 cm
sweet-ann [11.9K]
A. 10.6
is the approximate number
3 0
3 years ago
Read 2 more answers
Is -0.5 an integer? Explain.​
Drupady [299]
Yes, -0.5 is an integer because it is a negative number. Any number that is positive or negative is an integer.
4 0
3 years ago
Read 2 more answers
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