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3 years ago

14

If a= -2, b=3 evaluate the expression 2a-3b

2 answers:

tia_tia [17]3 years ago

7 0

2x-2-3x3 =-13. -13 is the answer

VikaD [51]3 years ago

4 0

Answer:

-13

Step-by-step explanation:

2(-2 )- 3(3)

-4-9

=-13

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Which number produces an irrational number when added to 0.4

VARVARA [1.3K]

I don't think when this number is added to any other rational number would produce an irrational number

But we do know that when 0.4 is added to an irrational number it would be irrational.
e.g; 0.4 + pi is irrational, etc, etc
So any other irrational number would make it irrational

7 0

3 years ago

What is the factorization of 3x2 – 8x + 5?

ELEN [110]

we have

$3x^{2} -8x+5$

Equate the expression to zero to find the roots

$3x^{2} -8x+5=0$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$3x^{2} -8x=-5$

Factor the leading coefficient

$3(x^{2} -(8x/3))=-5$

Complete the square. Remember to balance the equation by adding the same constants to each side.

$3(x^{2} -(8x/3)+(16/9))=-5+(16/3)$

$3(x^{2} -(8x/3)+(16/9))=(1/3)$

Rewrite as perfect squares

$3(x-(4x/3))^{2}=(1/3)$

$(x-(4x/3))^{2}=(1/9)$

square roots both sides

$(x-\frac{4}{3})=(+/-) \sqrt{\frac{1}{9}}$

$x=\frac{4}{3}(+/-) \frac{1}{3}$

the roots are

$x=\frac{4}{3}+ \frac{1}{3}=\frac{5}{3}$

$x=\frac{4}{3}- \frac{1}{3}=\frac{3}{3}=1$

so

$3x^{2} -8x+5=3(x-\frac{5}{3})(x-1)=(3x-5)(x-1)$

therefore

<u>the answer is the option</u>

$(3x-5)(x-1)$

6 0

3 years ago

Read 2 more answers

Given that (-3,7) is on the graph of f(x), find the corresponding point for the function f(x + 5).

natulia [17]

Given transformation is f(x+5) which is similar to f(x+h).

f(x+h) shifts the graph "h" units to the left side.

so that means f(x+5) will shift the graph "5" units to the left side.

Left or right movement is done using x-coordinate only so -3 will change in (-3,7)

-3+5=2

so the new coordinate of the point will be (2,7)

Hence final answer is (2,7).

8 0

3 years ago

PLZZ HELP!!!!!!!!!!!!!!!!!! ASKED QUESTION ALREADY BUT ANSWER WAS NOT IN SELECTION

timofeeve [1]

Step-by-step explanation:

so the correct answer is 3³

6 0

3 years ago

I need help solving this

max2010maxim [7]

Answer:

sorry cant help u

Step-by-step explanation:

im bad at this

5 0

3 years ago