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saul85 [17]
4 years ago
9

Which model represents the factors of 4x2 – 9?

Mathematics
2 answers:
Gemiola [76]4 years ago
8 0

4x^2-9


(2x+3)(2x-3)


To verify use distributed


2x(2x) +2x(-3)+3(2x)+3(-3)


4x^2-6x+6x-9


4x^2+0-9


4x^2-9

Ganezh [65]4 years ago
3 0

Answer:

It is C I took the quiz

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3 years ago
Mattie uses the discriminant to determine the number of zeros the quadratic equation 0 = 3x2 – 7x + 4 has. Which bestdescribes t
Katyanochek1 [597]
  • Discriminant Formula: b² - 4ac, with a = x^2 coefficient, b = x coefficient, and c = constant

So firstly, using our equation plug in the values into the discriminant formula and solve as such:

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1

So our discriminant is 1. <u>Since 1 is positive and a perfect square, this means that there are 2 real, rational solutions.</u>

8 0
3 years ago
Find the missing angles in the parallelogram.
algol [13]

Answer:

85, 95, 95

Step-by-step explanation:

A = 85

B = 95

C = 95

I hope this helped!

7 0
3 years ago
A spherical ball has a diameter of 8 inches. The ball has a slow leak in which the air escapes at the rate of 2.5 inches per sec
s344n2d4d5 [400]

Answer:

107.2 seconds

Step-by-step explanation:

Step one:

given

the diameter of ball 8 inches

radius= 8/2 = 4 in

The volume of the ball

v=4/3 \pi r^3

v= 4/3*3.142*4^3\\\\v= 4/3*3.142*64\\\\v= 804.35/3\\\\v=268.12 in^3

Step two:

we know that

rate= quantity/time

rate= 2.4 in per second

quantity= 268.12

time=?

time= quantity/rate

time= 268.12/2.5

time= 107.2 seconds

4 0
3 years ago
-4x-3(-44-23)=13<br><br><br> please show the work, i’ll mark brainliest
pychu [463]

Answer:

47

Step-by-step explanation:

Let's solve your equation step-by-step.

−4x−3(−44−23)=13

Step 1: Simplify both sides of the equation.

−4x+201=13

Step 2: Subtract 201 from both sides.

−4x+201−201=13−201

−4x=−188

Step 3: Divide both sides by -4.

−4x

−4

=

−188

−4

x=47

3 0
3 years ago
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