MATHEMATICS HIGH SCHOOL

Rational algebraic expression is an expression that is the ratio of two​

Answers

Answer 1
Answer:

Answer:

A rational expression is a ratio of two polynomials. The domain of a rational expression is all real numbers except those that make the denominator equal to zero.

Step-by-step explanation:

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Find the value or values of y in the quadratic equation y2 + 4y + 4 = 7.

Answers

If we move 7 to one side, we have (y^2 + 4y -3) = 0. From this form, we can apply the quadrati formula to solve for the values of y. To recall, quadratic formula is [ -b ±√ (b² - 4ac) ]/2a. For our equation, we have a =1, b = 4, and c = -3. If we plug this in, we have y to have approximate values of -2 - sqrt(7) and -2 + sqrt(7).

4x-5=2(2x+1) find the x

Answers

First, do the distributive property: 4x-5=4x+2
This answer has no real solution. The term is no real numbers. 

Hi Brainiac


4x-5=2(2x+1)

Distribute

4x-5= (2)(2x)+(2)(1)

4x-5=4x+2

Subtract 4x

4x-5-4x= 4x+2-4x

-5=2

Add 5

-5+5=2+5

0=7

There are no solutions


I hope that's help:0

Increase £84 by 3%
thank you!

Answers

If you would like to increase £84 by 3%, you can calculate this using the following steps:

3% * £84 = 3/100 * 84 = £2.52

£84 + £2.52 = £86.52

The correct result is £86.52.

Two sides of an obtuse triangle measure 10 inches and 15 inches. The length of longest side is unknown.

Answers

pythagorean theorem- a^2+b^2=c^2

a= 10
b= 15
c= ?

10^2+15^2=?^2
100+225=?^2
325=?^2
√325=?^2
18.027....

What is the discriminant of the quadratic equation 2x + 5x2 = 1?–18
–16
22
24

Answers

Applying it's formula, the discriminant of the quadratic equation 2x + 5x² is given of 24.

What is the discriminant of a quadratic equation?

A quadratic equation is modeled by:

y = ax^2 + bx + c

The discriminant is:

\Delta = b^2 - 4ac

In this problem, the equation is:

2x + 5x² = 1.

In standard form:

5x² + 2x - 1 = 0.

Hence the coefficients are a = 5, b = 2, c = -1, and the discriminant is given by:

\Delta = b^2 - 4ac = (2)^2 - 4(5)(1) = 4 + 20 = 24.

More can be learned about discriminant at brainly.com/question/19776811

#SPJ2
Hello,

Answer D

Δ=2²-4*5*(-1)=4+20=24

Write the equation of the line that passes through (3, 4) and (2, −1) in slope-intercept form.

Answers

m = (-1 - 4) /(2-3) = -5/-1 = 5

slope = 5

passing (3, 4)

y = mx + b

4 = 5(3) + b

4 = 15 + b

4 -15 = b

-11 = b or b = -11

answer:

equation

y = 5x - 11
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