2 years ago

What’s y of 2x+3y=7.20 and 4x+2y=8.80

Mathematics

1 answer:

Arturiano [62]2 years ago

7 0

Answer:

(x,y)=(3/2,7/5)

Step-by-step explanation:

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7 less than twice a number

Nikolay [14]

Answer:

2x-7

Step-by-step explanation:

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2 years ago

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sergeinik [125]

Step-by-step explanation:

3, -12,7should be the correct answers

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2 years ago

WILL GIVE U BRAINLIEST ♡ Rationalize the denominator of fraction with numerator square root of -36 divided by (2-3i)+(3+2i)

Dmitriy789 [7]

Answer:

$- \frac{3}{13} + \frac{15i}{13}$

Step-by-step explanation:

$\frac{ \sqrt{ - 36} }{(2 - 3i) + (3 + 2i)}$

Set up equation

Step 1: Simplify

$\frac{6i}{5 - i}$

Step 2:Multiply by conjugate

$\frac{6i}{5 - i} \times \frac{5 + i}{5 + i}$

Step 3:Simplify

$\frac{30i + 6 {i}^{2} }{ {i}^{2} - 5 {}^{2} }$

We can reduce this and we must make the imaginary number and real number serpate equations.

$- \frac{6}{26} + \frac{30i}{26}$

Reduce each by 2

$- \frac{3}{13} + \frac{15i}{13}$

7 0

2 years ago

What are the zeros of the function f(x) = x2 + 5x + 5 written in simplest radical form?

RideAnS [48]

Step-by-step explanation:

The function is as follows :

$f(x) = x^2 + 5x + 5$

We need to find the zeroes of the function in the simplest radical form.The zero of the above function is given by :

$x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}$

Here,

b = 5

a = 1

c = 5

So,

$x=\dfrac{-5\pm \sqrt{5^2-4\times 1\times 5} }{2(1)}\\\\x=\dfrac{-5\pm \sqrt{25-20} }{2(1)}\\\\x=\dfrac{-5\pm \sqrt{5} }{2}$

Hence, the correct option is (c).

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3 years ago

Simplify<br> 27^n+3 -6×3^3n+3/3^n×9^n+2

MrMuchimi

Answer:27^n+3–6*3^3n+3–n*9^n+2

Step-by-step explanation:

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2 years ago