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3 years ago

5

Choose and use two mathematical properties (the commutative property, combining like terms, or the distributive property) to cre

ate one equivalent

1 answer:

VashaNatasha [74]3 years ago

3 0

Commutative property:- x + 2 = 2 + x

distributive property:- 2x - 2 = 2(x - 1)

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How many x-intercepts does the graph of each quadratic equation have? Show your work.

Alex73 [517]

Answer:

Step-by-step explanation:

In each case we find the discriminant b^2 - 4ac.

If the discriminant is negative, we have two unequal, complex roots.

If the discriminant is zero. we have two equal, real roots.

If the discriminant is positive, we have two unequal real roots.

#51: 8v^2 - 12v + 9: the discriminant is (-12)^2 - 4(8)(9) = -144. we have two unequal, complex roots

#52: (-11)^2 - 4(4)(-14) = 121 + 224 = 345. we have two unequal real roots.

#53: (-5)^2 - 4(7)(6) = 25 - 168 (negative). we have two unequal, complex roots.

#54: (4)^2 - 16 = 0. We have two equal, real roots.

4 0

2 years ago

How much money in total would be paid by the 1st 150 student

spin [16.1K]

113.25 because the middle ground of 1 - 150 students is 75 and then 1+150=151 2+149+151 but instead of doing that again and again just multiply the lowest number and the highest number by the middle ground

7 0

2 years ago

A can in the shape of a right cylinder is filled with 10W-40 oil. The weight of 10W-40 oil is 0.857 gram per cubic centimeter. I

Leya [2.2K]

To solve this, we have to find the volume of the cylinder first. The formula to be used is $V = \pi r^{2} h$

Given:V= ?r= 6cmh= 10cm
Solution: $V = \pi r^{2} h$
V= (3.14)(6cm) $^{2}$ x 10cmV= (3.14)( $36cm^{2}$ ) x 10cmV= ( $113.04cm^{2}$ ) x 10cmV= 1130.4cm^3
Finding the volume of the cylinder, we can now solve what the weight of the oil is. Using the formula of density, Density = mass/volume, we can derive a formula to get the weight.
Given:Density = 0.857 gm/cm^3Volume = 1130.4 cm^3
Solution:weight = density x volumew= (0.857 gm/cm^3) (1130.4cm^3)w= 968.7528 gm
The weight of the oil is 968.75 gm.

5 0

2 years ago

Q # ..19 anybody help me?

Goshia [24]

The equation of the line with slope m and passing through the point $(x_0,y_0)$ is

$y-y_0=m(x-x_0).$

Since m=6 and the coordinates of the point are (8,3), then the equation is

$y-3=6(x-8).$

Answer: correct choice is B.

3 0

2 years ago

What is 3x10 to the power <br> two + 5x10 to the power of 3

andrew11 [14]

Answer:

5300

Explination:

3 × (10 × 10) + 5 × (10 ×10 × 10) = 5300

oder of operation, this is the order you do an equation.

Brakets first ( )

Exponets 'power of'

Devision ÷

M multiplication ✖

A addition ➕

S subtraction ➖

3 0

2 years ago