Find −3a2 − b3 + 3c2 − 2b3 if a = 2, b = −1, and c = 3.

Answer:

$120

Step-by-step explanation:

930-570=360 (Price difference in 3 years)

360 divided by 3= 120 (Price difference for each of the 3 years)

Answer:

- 1 -5 \sqrt(2) + 12i

Hoped I helped

==============================================

Explanation:

The chords intersect to form the angle 73 degrees. The chords also form the arcs of 96 and x. Averaging the arc measures will result in the internal angle 73

---------

(x+96)/2 = 73

x+96 = 2*73 ... multiply both sides by 2

x+96 = 146

x = 146-96 ... subtract 96 from both sides

x = 50

Answer: $16

Step-by-step explanation:

reduce by 20% means cutting from 100% and leftover with 80% of original

                                            100%-20%=80%

original price: $20×100%=$20

after reduction: $20×(100%-20%)=$16

Answer:

16

Step-by-step explanation:

First find the discount

20 * 20%

20 * .20

4

Subtract this from the price

20 -4

16

The new price is 16

Answer:

y = - 4x + 7

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the gradient and c the y- intercept )

Here m = - 4 and c = 7, thus

y = - 4x + 7 ← equation of line

Answer:

Every segment has infinitely many midpoints

Every segment has one perpendicular bisector

Every segment has infinitely many congruent segments

Every segment has one line that is perpendicular to it

Step-by-step explanation:

Segments in a plane: The term "segment" is determined as a specific part that is being cut-out from a particular figure, for example, a spherical or a circular figure through a plane or a line as one of the parts consisting of a "circular area" associated with an arc or its related chord by two distinct planes or lines.

Answer:

eleven more than a number squared, decreased

by six;

evaluate when t = 5

Evaluating Expressions

Write the expression as 11 +t2 -6

Write the expression as 11 +2t -6

Write the expression as t underscore 2                                        

The value when t = 5 is 16.

The value when t = 5 is 30.

The value when t = 5 is 7.5.

Answer:

11 + the number sqaured - 6

Step-by-step explanation:

Since you do not provide any other numbers I do not know what the number is so I can only give you this.Hope it helps

Answer:

12.5 km per liter

Step-by-step explanation:

To get the kilometer per liter divide km by liters

100/8=12.5

Answer:

D. 22.5

Step-by-step explanation:

By the property of intersecting tangent and secant outside of the circle, we have:

x° = 1/2[(4x+5)° - 50°]

2x° = [(4x+5)° - 50°]

2x° = (4x-45)°

2x = 4x - 45

45 = 4x - 2x

45 = 2x

x = 45/2

x = 22.5

The measure of the variable x will be 22.5°. Then the correct option is D.

It is the close curve of an equidistant point drawn from the center. The radius of a circle is the distance between the center and the circumference.

We know that half of the difference between the angle (4x + 5)° and 50° will be equal to x°. Then the equation will be

x = [4x + 5 - 50] / 2

Simplify the equation, then we have

2x = 4x - 45

2x = 45

x = 22.5°

The measure of the variable x will be 22.5°.

Then the correct option is D.

More about the circle link is given below.

https://brainly.com/question/11833983

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Answer:

[tex]m_1 = m_2 = 4[/tex]

Step-by-step explanation:

Given

[tex]y = 4x + 1[/tex]

[tex]y = 4x + 10[/tex]

Required

Show that these two lines have no point of intersection

The general equation of a line is

[tex]y = mx + b[/tex]

Where m represents slope

In [tex]y = 4x + 1[/tex]

[tex]m = 4[/tex]

Similarly; in [tex]y = 4x + 10[/tex]

[tex]m = 4[/tex]

Since the slope of both lines are equal;

[tex]m_1 = m_2 = 4[/tex]

This implies that the lines are parallel and parallel lines have no point of intersection

See Attachment for Graph

Step-by-step explanation:

[tex]\huge{\purple{\underline{\underline{\bf{\pink{Answer}}}}}}[/tex]

x-3. eq 1

x+1 eq 2

4x-2 eq 3

Add equation 1 ,2 ,3

[tex]\blue\star[/tex]x -3 + x +1 +4x-2 =0

[tex]\blue\star[/tex]6x - 4 = 0

[tex]\blue\star[/tex]x = 4/6

[tex]\blue\star[/tex]x = 2/3

Hope it helps

Hope it help

Answer:

112.5:15=7.5

Step-by-step explanation:

112.5:15

=112.5÷15

=7.5

The equation "112.5 : 15 = 7.5" is true.

Proceed option 1:

"15 - 112.5 = 7.5":

This equation is not correct because 15 - 112.5 does not equal 7.5.

Proceed option 2:

"15 : 112.5 = 75":

This equation is not correct because when we divide 15 by 112.5, we get a decimal answer of 0.1333, not 75.

Proceed option 3:

"112.5 : 15 = 7.5": This equation is correct.

When we divide 112.5 by 15, we get an answer of 7.5.

Proceed option 4:

"112.5 : 15 = 75": This equation is not correct because when we divide 112.5 by 15, we get an answer of 7.5, not 75.

Hence equation "112.5 : 15 = 7.5" is correct.

To learn more about equation visit:

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Answer:

B

Step-by-step explanation:

The height has to be perpendicular ( 90 degrees) to the base

B is the height to the base

Let's go through each statement to see if it is true or false.

=====================================

Integers are always whole numbers

This is true. Integers are numbers that don't have any fractional or decimal portion

=====================================

All whole numbers are rational

This is also true. Let's say we had the whole number 7. We can write it as 7/1 which is rational. A rational number is any number that can be written as a fraction of two integers. So this means any whole number can be converted to a rational number format.

=====================================

Integers include all rational members

This is false. It is true that all integers are rational, but there is more to the story than just integers when it comes to listing all rational numbers.

For instance, the number 1/2 is rational, but it is not an integer.

=====================================

Rational numbers do not include integers.

This is false. As stated earlier, any integer can be placed over 1 to form a rational number. So the rational numbers do include integers, among non-whole number fractions as well.

Answer:

B. x = 7/2 or x=-1/3

Step-by-step explanation:

You know both angles 6x² and 19x+7 have to be the same, so you can solve

6x² = 19x+7

6x² - 19x - 7 = 0

apply the quadratic formula and find

x = -1/3 or x = 7/2

now think carefully if the negative x is a realistic solution. It would lead to the angles being (2/3)°. This is not what the picture suggests, but it is also not wrong, so answer B seems the best.

Answer:

8. B

Step-by-step explanation:

"More than twice...-

2x

complement

90

"23 is more"-

+ 23

put it all together-

2x + 23 = 90

Angle E is 33.5 or 34 once you find the value of x

Now subtract this from 180 to find the other angle

180 - 34 = 146

Answer:

(i) F = 25 N

(ii) F = 35.36 N

(iii) F = 43.3 N

Step-by-step explanation:

We note that the component of force acting along the incline surface is given by the relation

Force, acting parallel to the incline plane, [tex]F_p[/tex] = M×g×sin(θ)

Given that the weight of the body is given as 50 N, we have;

M×g = 50 N

Therefore we have;

(i) For the plane with angle of elevation = 30°

[tex]F_p[/tex] = M×g×sin(θ) = 50 × sin(30°) = 25 N

The force  [tex]F_p[/tex]  = F = 25 N

F = 25 N

(ii) For the plane with angle of elevation = 45°

[tex]F_p[/tex] = M×g×sin(θ) = 50 × sin(45°) = 50 × (√2)/2 = 25·√2 N

[tex]F_p[/tex] = F = 25×√2 N = 35.36 N

F = 35.36 N

(iii) For the plane with angle of elevation = 60°

[tex]F_p[/tex] = M×g×sin(θ) = 50 × sin(60°) = 50 × (√3)/2 = 25·√3 N

[tex]F_p[/tex] = F = 25×√3 N = 43.3 N

F = 43.3 N.

Answer:

solution set={35/3}

Step-by-step explanation:

--3(x+5)=50

3x+15=50

3x+15-15=50-15

3x=35

3x/3=35/3

x=35/3=11.66

solution set={35/3}

hope it will help ^_^

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Answer:

80 :)

Step-by-step explanation:

Answer:

$5.00 each month.

Step-by-step explanation:

60 / 12 = 5

60 for how many $ per year.

12 for how many months are in a year.

Answer:

C AND D

Step-by-step explanation:

it is a rational and real number

Answer:

[tex]\Large \boxed{\mathrm{\bold{C.} \ real}} \\\\ \Large \boxed{\mathrm{\bold{D.} \ rational}}[/tex]

Step-by-step explanation:

[tex]\sf \displaystyle \frac{5}{6}=0.833333...[/tex]

The fraction is a repeating decimal. Repeating decimals are rational numbers.

A rational number is a real number.

Answer:

$104.1

Step-by-step explanation:

17.35 x 6 = 104.1

104.1 x 5 =520.5

520.5 x 2 = $104.1

Hope this helps!

Answer:

-13

Step-by-step explanation:

{(-4)² + (-2)(-5)} / -2

= {16 + 10} / -2

= 26 / -2

= -13

Answer:

0.75

Step-by-step explanation:

the simplified equation is 2x=1.5 / 2= x=0.75

Answer:

They will have the same amount of sugar in their canisters in 15 days

Step-by-step explanation:

Here in this question, we are concerned with knowing the number of days in which the amount of sugar in both canisters will be the same.

Since we do not know the number of days it will

take, we have to represent it using a variable.

Let the number of days be x days

Now, we are told Li uses 8.4 g per day.

So in x days, the amount user will be 8.4 * x = 8.4x g

Thus, the amount of sugar remaining in her canister after x days will be 128 - 8.4x

For Sue, she uses 12.6 grams each day. So in x days, the amount of sugar used will be 12.6 * x = 12.6x g

So the amount of sugar left in her canister will be 191-12.6x

Since on the xth day , the amount of sugar remaining is same, we can equate the amount of sugar remaining in both canisters. That would be;

128-8.4x =191-12.6x

Collect like terms;

12.6x-8.4x = 191-128

4.2x = 63

x = 63/4.2

x = 15 days

Answer:

d=-4m + 28

Step-by-step explanation:

1. 1/4d +m+-m= 7 + -m

1/4d=- -m +7

2. divide doth sides

1/4d divide 1/4= -m+7 divide 1/4

d= -4m + 28

Answer:  

Equation translates to 289 + y = 206

it solves to y = -83

====================================================

Explanation:

The "and y more" means we are adding y onto 289 to get the expression 289+y. This is set equal to 206 because of the term "is" in the original statement.

Therefore, "289 and y more is 206" translates fully to the equation 289+y = 206

This is the same as saying y+289 = 206

To isolate y, we undo what is happening to it. We are adding 289 to it, so we must subtract 289 from both sides

y+289 = 206

y+289-289 = 206-289

y = -83

So we are adding -83 to 289 to get 206

Answer:

a + 8

Step-by-step explanation:

Note that

(x + y)² = x² + 2xy + y²

           = x² + y² + 2xy

           = a + 2(4) = a + 8

Here, we are required to determine an expression equal to (x + y)²

The correct answer is therefore (a + 8)

First, x² + y² = a can be rewritten completing the square method as;

(x+y) (x+y) = a + 2xy

when we expand the expression above; we have;

x² + 2xy + y² = a + 2xy

since, 2xy is present on both sides of the equation;

we still get the expression; x² + y² = a

Therefore, (x+y)² = a + 2xy

we can then substitute the value 4 for xy in the equation above;

Thus, since xy = 4, therefore 2xy = 8

Consequently, (x+y)² = a + 8

The correct answer is therefore (a + 8)

Read more:

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Answer:

Dilation is the transformation

Answer:

  y = (x -2)^2 +4

Step-by-step explanation:

Translation (right, up) by (h, k) gives you the function ...

  g(x) = f(x -h) +k

You want f(x) = x^2 to be translated right 2 and up 4, so it becomes ...

  y = (x -2)^2 +4