MATHEMATICS COLLEGE

For the equation y = 2x2 - 5x + 18, choose the correct
application of the quadratic formula.
For the equation y = 2x2 - 5x + 18, - 1

Answers

Answer 1
Answer:

Answer:

Option (2)

Step-by-step explanation:

For a quadratic equation,

ax² + bx + c = 0

roots of this equation can be determined by using quadratic formula,

x = (-b\pm√(b^2-4ac))/(2a)

Comparing this quadratic equation with the given equation,

y = 2x² - 5x + 18 = 0

a = 2

b = (-5)

c = 18

By substituting these values in the given formula,

x = (5\pm√((-5)^2-4(2)(18)) )/(2(2))

Therefore, Option (2) will be the answer.

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7n+4n combine the like terms to create an equivalent expression

Answers

Answer:

11n

Step-by-step explanation:

7n+4n   (factorize out n)

= n (7 + 4)

= n (11)

= 11n

Answer:

11n

Step-by-step explanation:

Combining like terms just means adding together the numbers with the same variable. 7n and 4n both have an n attached, so you would add like normal to get 7n + 4n = 11n.

Does the graph below represent a function? A. YesB. No
C. Sometimes
D. Not enough information.

Answers

Yeah C should be the correct answer

Find the slope of (5,-5) and (-4,5)

Answers

Answer:

Slope of points (5,-5) and (-4,5) is \mathbf{-(10)/(9) }

Step-by-step explanation:

We need to find the slope of points (5,-5) and (-4,5)

The formula used to find slope is: Slope=(y_2-y_1)/(x_2-x_1)

We have x_1=5, y_1=-5, x_2=-4 \ and \ y=5

Putting values in formula and finding slope

Slope=(y_2-y_1)/(x_2-x_1)

Slope=(5-(-5))/(-4-(5))\nSlope=(5+5)/(-4-5)\nSlope=(10)/(-9)\nSlope=-(10)/(9)

So, slope of points (5,-5) and (-4,5) is \mathbf{-(10)/(9) }

6. A drugstore buys bleach by the skid. Each skid weighs approximately46.3 lb and holds 48 cases of bleach. Each case contains six 5.38-litre
bottles. If one litre of bleach weighs about 847,5 grams, what is the
weight of a loaded skid of bleach stated in kilograms? In pounds?

Answers

Ok ok ok ok ok ok ok ok ok ok ok

A basketball player is 6ft 8in tall. A model of the basketball player is 5 inches tall. What is the scale factor

Answers

Answer:

1 ft. = 16 in.

Step-by-step explanation:

6 ft. 8 in. is 80 in.

then you would divide 80 by 5 to get 16.

not sure what scale factor you were looking for, so i did ft. to in.

not 100% sure though

best of luck!

Convert 0.49494949 into a fraction. Show all work.

Answers

Answer:

0.4949

=

49      this is a fraction

99

Step-by-step explanation:

Let

XXX

x

=

0.49

¯¯¯¯

49

then

XXX

100

x

=

49.49

¯¯¯¯

49

and

XXX

99

x

=

100

x

−

x

=

49

XXX

x

=

49

99
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