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LiRa [457]
2 years ago
5

Which value must be added to the expression x2 – 3x to make it a perfect-square trinomial?

Mathematics
1 answer:
Vitek1552 [10]2 years ago
7 0

Answer:

\frac{9}{4}

Step-by-step explanation:

Given

x² - 3x

To make the expression a perfect square

add ( half the coefficient of the x- term )²

x² + 2( - \frac{3}{2} )x + \frac{9}{4}, thus

x² - 3x + \frac{9}{4}

= (x - \frac{3}{2})² ← a perfect square

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Which of the following represents the y-intercept of the equation y = 2x - 5 A. 2 B. -5 C. 0 D. 5
lora16 [44]

Hello :)

the y intercept can be found when you use the slope intercept formula

<h2>y = mx +b</h2>

m: slope

b: y-intercept

In the equation given here:

<h2>y = 2x - 5 </h2>

m: 2

b: -5

So, therefore the answer is B. -5

3 0
3 years ago
Rico eats trail mix containing 1000 calories how many grams of trail mix does he eat
babunello [35]
It would be 10 ......
3 0
3 years ago
Hello can someone explain to me how to do this?
wel
A)
you square both sides
by squaring the left side, you get rid of the square root leaving only x one that side. But you also need to square the other side because whatever you do to one side you have to do to the other.

Answer: x=o/a^2

b)
To get o on its own on one side you multiply a. You basically do the opposite of what a originally does to cancel it out. So originally, a is dividing o so if you do the opposite, a will multiply on both sides.

a X o cancels out the a, leaving only o.
But whatever you do to one side, you have to do to the other. so Vx (square root of x) has to also be multiplied by a.

Answer: Vx X a=o

c) this is basically the same as b).

apply what i said in b) to this and you will get your answer

to cancel out o, you multiply both sides by o.
because o is getting divided, you will have to do the opposite which is multiply o.

Answer: Vx X o=a





3 0
2 years ago
What is the Reciprocal of 5 1/2
charle [14.2K]

Answer:

2/11

Step-by-step explanation:

A reciprocal is a number or fraction flipped. So, 5 1/2=11/2. 11/2 flipped is 2/11.

4 0
2 years ago
Find the value of X.
VashaNatasha [74]

Answer:

19) 28°

20) 60°

21) 17°

Step-by-step explanation:

19)

Supplementary angles:

(x + 12)º + 140º = 180º

x + 12 + 140 = 180

x = 180 - 140 - 12

x = 28º

20)

Angles at a point:

(- 24 + x)° + 24° + 300° = 360°

- 24 + x + 24 + 300 = 360

x = 360 - 300

x = 60°

21)

Vertically opposite angles:

(1 + 3x)° = 52°

1 + 3x = 52

3x = 52 - 1

3x = 51

x = 17°

6 0
2 years ago
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