MATHEMATICS HIGH SCHOOL

Which will result in a perfect square trinomial?(3x – 5)(3x – 5)
(3x – 5)(5 – 3x)
(3x – 5)(3x + 5)
(3x – 5)(–3x – 5)

Answers

Answer 1
Answer:

Answer:

the answer is a

Step-by-step explanation:

(3x-5)(3x-5) that would be a perfect square because all numbers are squared. I dont know how else to explain...
Answer 2
Answer:

Answer:

(3x – 5)(3x – 5) I think

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What is the value of x in the equation 3x – 1/9 = 18, when y = 27?

Answers

Answer:

x = 7

Step-by-step explanation:

3x - 1/9y = 18

Put y as 27 and evaluate.

3x - 27/9 = 18

3x - 3 = 18

Add 3 on both sides.

3x = 21

Divide 3 on both sides.

x = 7

Answer:

Here you go mate!

Step-by-step explanation:

The longest side of an obtuse triangle measures 20 cm. The two shorter sides measure x cm and 3x cm

Answers

Obtuse triangle is a triangle that has an angle that is greater than 90°.

longest side: 20 cm
two shorter sides: x cm and 3x cm

choice given: 6.3   6.4   7.0   7.1

Obtuse triangle Pythagorean Theorem

c² > a² + b²

20² > x² + 3x²
400 > 4x²
÷4      ÷4
 100 > x²
   10 > x
  
400 > 4(7.1)²
400 > 4(50.41)
400 > 201.64

The greatest possible value of x is 7.10

How many solutions exist for the given equation?

1/2(x + 12) = 4x – 1

Answers

(1)/(2) (x+12)=4x-1

Multiply  both sides by 2 :

(1)/(2)(x+12)*2 = 4x*2-1*2

x+12=8x-2

x+12-12=8x-2-12

x=8x-14

Subtract 8 x from both sides:

x-8x=8x-14-8x

-7x=-14

Divide both sides by -7 :

(-7x)/(-7) = (-14)/(7)

x = (14)/(7)

x = 2

1 solution

hope this helps!

Answer:

B.one

Step-by-step explanation:

there is only one solution to the problem.

If a given data point is (1,4) and the line of best fit is y = 1.5x + 3.25, what's the residual value?

Answers

Answer:

The residual value is -0.75

Step-by-step explanation:

we know that  

The residual value is the observed value minus the predicted value.

RESIDUAL VALUE=[OBSERVED VALUE-PREDICTED VALUE]

where

Predicted value.--> the predicted value given the current regression equation

Observed value. --> The observed value for the dependent variable.

in this problem

we have the point (1,4)

so

The observed value is 4

Find the predicted value  for x=1

y =1.5(1)+3.25=4.75

predicted value is 4.75

so

RESIDUAL VALUE=(4-4.75)=-0.75

Answer:

-0.75

Step-by-step explanation:

PLEASE HELP i really need the answer asap

Answers

Answer:

its 16

Step-by-step explanation:

8 /x = 10/20

20 * 8 =160

10 * x =10x

10x = 160

x=16
The answer is
X is 16

Need Help Fast plsss

Answers

Answer:

The answer should be B.) 2yw+y-1

Step-by-step explanation:

For this equation you:

  1. multiply both sides by y
  2. Add -2 by both sides.
  3. Divide both sides by 2.
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