A cell phone company charges $40 per month for unlimited calling, and $0.20 per text message sent. If t represents the number of text messages Roxy sent last month, which expression represents the cost of her bill last month before any taxes or additional fees?40 − 0.2t
(40 + 0.2)t
40 + 0.2t
(40 − 0.2)t

Answer:

PQ = 16

Step-by-step explanation:

Using the cosine ratio in the right triangle and the exact value

cos60° = [tex]\frac{1}{2}[/tex], then

cos60° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{RQ}{PQ}[/tex] = [tex]\frac{8}{PQ}[/tex] = [tex]\frac{1}{2}[/tex] ( cross- multiply )

PQ = 8 × 2 = 16

Answer:

2x((3x-2)x(3x+2))²

Final answer:

The correct equivalent expressions for 162x⁴-144x²+32 are 2(81x⁴ - 72x² + 16) and 2(9x² - 4)², which correspond to options A and C.

Explanation:

The expression 162x⁴-144x²+32 can be factored by first taking out the greatest common factor (GCF), which is 2, resulting in 2(81x⁴ - 72x² + 16). If we look at the inside expression, we can recognize that it is a perfect square trinomial because 81x⁴ is the square of 9x² and 16 is the square of 4, and the middle term (-72x²) is twice the product of 9x² and 4. Consequently, the expression inside the parentheses can be written as the square of a binomial, resulting in 2(9x² - 4)². Therefore, the equivalent expressions for 162x⁴ - 144x² + 32 are:

Thus, the answers are A and C from the options provided.

Answer:

16272

Step-by-step explanation:

just use mutiplication

Answer:

Therefore 70 year Marc's grandmother be 5 times of as Marc will be after (70-56) = 14 year.

Step-by-step explanation:

Given, Marc was born on his grandmother's 56th birthday.

Let , x year will Marc's grandmother be 5 times as Marc will be then.

At that time the age of Marc will be = (x-56) year

According to the problem,

x= 5(x-56)

⇔x = 5x - 280

⇔x-5x= -280

⇔-4x=-280

⇔x=70

Therefore 70 year Marc's grandmother be 5 times of as Marc will be after (70-56) = 14 year.

Answer:

(-5,4) (6,-2)

(-2-4)/(6+5)= -6/11

Answer:

-3/5

Step-by-step explanation:

The functions whose graphs include the point (16, 4) is y = x−12.

Option: D.

Step-by-step explanation:

To find the function that passes through the point (16,4).

Substitute the point in all the equations and equate the final values to find the correct equation.

A. y=2x.

Substitute (16,4).

4=2(16).

4≠32.

Thus the equation doesn't contains the point (16,4).

B. y=[tex]x^2[/tex].

Substitute (16,4).

4=[tex]16^2[/tex].

4≠ 256.

Thus the equation doesn't contains the point (16,4)

C. y=x+12.

4=16+12.

4≠28.

Thus the equation doesn't contains the point (16,4)

D. y=x−12.

4=16-12.

4=4.

Thus the equation contains the point (16,4)

E. y=14x.

4=14(16).

4≠224.

Thus the equation doesn't contains the point (16,4)

∴The functions whose graphs include the point (16, 4) is y = x−12.

Answer:

Step-by-step explanation:

There are 2 answers to this question. I know one of them wich is D but the other one I think it;s A

Answer:

23

Step-by-step explanation:

92÷4=23

There are a total of 92 barrettes and 4 sisters so you divide the total amount of barrettes with the total amount of people present.

Answer:

23 barrettes

Step-by-step explanation:

92 divided by 4=23 There are a total of 92 barrettes and 4 sisters so you divide the total amount of barrettes with the total amount of people present.

In another way :

So you have 92 then you divide 92 by 4 and that equals 23

Answer: b.14

Step-by-step explanation:

We have two shelves, the top shelf [tex]s_{t}[/tex] and the bottom shelf [tex]s_{b}[/tex].

Now, firstly we are told the top shelf has 10 more than 1/3 the number of books on the bottom shelf. This can be expressed as:

[tex]s_{t}=10+\frac{1}{3}s_{b}[/tex] (1)

Then, we are told there are 12 books on the bottom shelf:

[tex]s_{b}=12[/tex] (2)

Substituting (2) in (1):

[tex]s_{t}=10+\frac{1}{3}(12)[/tex] (3)

[tex]s_{t}=10+\frac{12}{3}[/tex] (4)

[tex]s_{t}=14[/tex] (5) This is the number of books on the top shelf

Hence, the correct option is b.

Answer: $1935.56

Step-by-step explanation:

T.P=R.P-(12% of R.P)

R.P=$77.30 per 1m²

When m =5.35, m²=5.35²=28.6225

R.P= $(77.30×28.6225)

R.P=$2212.52

12.5% of R.P=0.125×$2212.52=$276.565

Therefore,

T.P = $2212.52-$276.565 = $1935.96

Note: T.P is Trade Price and R.P is Retail Price.

Hope this helps?

With y-x=0, add x to both sides to get y=x.

Now you can substitute either x or y

7x-9x=8 or 7y-9y=8 which is the same thing

-2x=8 or -2y=8

x=-4 or y=-4

Hope this helped!

Answer:

x=5

Step-by-step explanation:

The given equation is [tex]\frac{2}{x-3}=\frac{5}{x}[/tex]

The denominator is never equal to zero.

Therefore [tex]x-3\ne0[/tex] or [tex]x\ne 0[/tex]

[tex]x\ne3[/tex] or [tex]x\ne 0[/tex]

Let us now cross multiply to get:

[tex]2x=5(x-3)[/tex]

Expand to get:

[tex]2x=5x-15[/tex]

Group similar terms to get:

[tex]5x-2x=15[/tex]

[tex]3x=15[/tex]

[tex]x=5[/tex]

Perimeter of the triangle is 30.75 inches.

Step-by-step explanation:

Perimeter = 11.25 + 9.25 + 10.25

= 30.75 inches

Answer:

x = 115°

Step-by-step explanation:

Yo sup??

Dude chill....u will pass for sure :)

SA of composite figure=sum of SA of individual faces

=SA of 2 triangles+SA of rectangle 1+SA of lower cuboid

=2*1/2*8*10+2*9*14+3*10*14+2*10*10

=80+252+420+200

=952 ft^2

Hope this helps.

Answer:

(y + 5) = -7(x + 3)

Step-by-step explanation:

Point Slope Form:  (y - y1) = m(x - x1)

Step 1:  Find Slope

m = [tex]\frac{y2 - y1}{x2 - x1}[/tex]

m = [tex]\frac{-19 - (-5)}{-1 - (-3)}[/tex]

m = [tex]\frac{-19 + 5}{-1 + 3}[/tex]

m = [tex]\frac{-14}{2}[/tex]

m = -7

Step 2:  Put into point slope form

Point Slope Form:  (y - y1) = m(x - x1)

(y - (-5)) = -7(x - (-3))

(y + 5) = -7(x + 3)

Answer:infinitely many solutions

Step-by-step explanation: 4*2x= 8x and (7*4)+3 = 31. 8x+31 is equal to itself, therefore any value of x makes the equation true.

Answer:

That's a very dumb question, because some of her friends could be fakers and users. But, I'll answer it.

86 subtracted by 2 is 84.

It says she gave 3 to each friend so:

84 divided by 3 is 28.

She has 28 friends.

Answer:

x< 2

Step-by-step explanation:

We are given the inequality;

5(x+3)−8<17

First we take 8 to the other side;

5(x+3)<17 + 8, notice the sign changes like with an equation

Opening the brackets;

5x + 15 < 25

We then take 15 to the other side;

5x < 25 -15

5x < 10

  x < 2

Thus, the solution of the inequality is x< 2

Answer:

Option A

Step-by-step explanation:

The complete question is shown in the attachment.

Note that: [tex](f\cdot g)(x)=f(x)\cdot g(x)[/tex]

We need to multiply all the functions to see which of them satisfy the given criteria.

Option A

[tex]x^2\cdot \frac{1}{x} =\frac{x^2}{x}=x[/tex]

Option B

[tex]\frac{2}{x} \cdot \frac{2}{c} =\frac{4}{cx}[/tex]

Option C

[tex]\frac{x-2}{3} \cdot 2-3x =\frac{-3x^2+8x-4}{3}[/tex]

Option D

[tex]\frac{1}{2x-2} \cdot \frac{1}{2x+2} =\frac{1}{4(x^2-1)}[/tex]

The correct choice is A

Answer: [tex]25.5 m^{3}[/tex]

Step-by-step explanation:

If the volume of a sphere is

[tex]V=\frac{4}{3} \pi r^{3}[/tex]

Where [tex]r=2.3 m[/tex] is the radius

The volume of a hemisphere is half the volume of the total sphere:

[tex]V_{hemisphere}=\frac{V}{2}=\frac{\frac{4}{3} \pi r^{3}}{2}[/tex]

[tex]V_{hemisphere}=\frac{2}{3} \pi r^{3}[/tex]

Solving this equation:

[tex]V_{hemisphere}=\frac{2}{3} \pi (2.3 m)^{3}[/tex]

Finally:

[tex]V_{hemisphere}=25.48m^{3} \approx 25.5 m^{3}[/tex]

The volume is approximately 12.8 cubic meters.

To find the volume of a hemisphere, we can use the formula for the volume of a sphere and then take half of that volume.

The formula for the volume of a sphere is:

V = (4/3)πr³

Since we only need the volume of a hemisphere, we'll divide by 2:

V = (1/2) * (4/3)πr³

Given the radius (r) is 2.3 meters, we substitute the value into the formula:

V = (1/2) * (4/3)π (2.3)³

First, calculate the cube of the radius:

2.33 = 2.3 * 2.3 * 2.3 = 12.167

Next, plug this back into the formula:

V = (1/2) * (4/3)π * 12.167

Then, calculate the constant part of this equation:

(4/3)π ≈ 4.18879

So:

V = (1/2) * 4.18879 * 12.167 = 25.5288

Finally, divide by 2:

V ≈ 12.7644

Rounding to the nearest tenth, the volume of the hemisphere is 12.8 cubic meters.

Answer:

draw an 8 x 7 rectangle

Step-by-step explanation:

note that

area of rectangle = length x width.

we also know that 56 = 8 x 7

hence you simply need to draw a rectangle and label the long side "8 cm" and the short side "7 cm"

Answer:

3353

Step-by-step explanation:

1. Simplify 960 + 2 to 962.

4 · (962 − 125) + 5

2. Simplify 962 − 125 to 837.

4 · 837 + 5

3. Simplify 4 · 837 to 3348.

3348 + 5

4. Simplify

3353

Answer: 3353

Step-by-step explanation:

4 × 960 = 3840

4 × 2 = 8

4 × -125 = -500

-500 + 8 + 3840 = 3348

3348 + 5 = 3353

Answer:

-20 and 6

Step-by-step explanation:

-20 x 6 = -120

and if you add -20 and 6, you get -14.

Answer:

3/2

Step-by-step explanation:

Scale factor=side of second triangle/side of first triangle

Scale factor=12/8

=3/2

Step-by-step explanation:

[tex]Scale \: factor = \frac{8}{12} = \frac{2}{3} \\ [/tex]

Answer:

1. 7/10 + 3 6/10= 4 13/10= 5 3/10

Answer:

y = 6.44

Step-by-step explanation:

"nine times number y" : 9y

"subtracted from 95" : (95 - 9y)

"equals 37" : (95 - 9y) = 37

solving for y

95 - 9y = 37   (subtract 95 from both sides)

-9y = 37 - 95

-9y = -58  (divide both sides by -9)

y = -58/ -9

y = 6.44

The required algebraic expression that is nine times a number y subtracted from 95 equals 37. is 95 - 9y = 37.

Given that,
To determine the algebraic expression for nine times a number y subtracted from 95 equals 37.

The algebraic expression consists of constant and variable. eg x, y, z etc.

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,

Here,

The number be y
Nine-time of y = 9y
Subtraction of 9y from 95 is equal to 37,
95 - 9y = 37

Thus, the required algebraic expression that is nine times a number y subtracted from 95 equals 37. is 95 - 9y = 37.

Learn more about algebraic expression here:

https://brainly.com/question/953809

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Answer:

He is correct.

Step-by-step explanation:

9÷4=2.25

The equivalent quarterly interest rate is 2.25%. The annual interest is converted quarterly by dividing the annual rate by 4.

Simple interest is a notion employed in various industries, including banking, finance, and automobiles.

Gavin put money into his savings account, which is compounded annually at an interest rate of 9%

The corresponding quarterly interest rate is, 2.25%.

The annual interest is converted quarterly as;

[tex]\rm n= \frac{9}{4} \\\\ n= 2.25\%[/tex]

Hence, the equivalent quarterly interest rate is 2.25%.

To learn more about simple interests, refer to;

https://brainly.com/question/22621039

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Answer:

Trapezium.

Step-by-step explanation:

Some of the properties of a trapezium include:

- A pair of opposite parallel sides (the long and short base)

- Has 4 sides (meaning it is a quadrilateral)

-

Answer:

who ever answers right will get Brainlyeist!!!!! PLEASE HELP ME OUT!!!

3. Find the area of the triangle.

A. 21.2 in

B. 10.5 in

C. 21 in

D. 42 in

To save time, you dont need to write "> or ="

You can simply write ">=" without the quotes.

So 3x >= 10 means "3x is greater than or equal to 10"

-----------------------------------

we start with 3x >= 2x+5

we want 3x-10 on the left hand side. We already have a 3x. So if we stick a -10 on the left side, we need to do the same thing to the right side to balance things out. We can subtract 10 from both sides to do this

3x >= 2x+5

3x-10 >= 2x+5-10 ... subtract 10 from both sides

3x-10 >= 2x-5

So it looks like a 5 will go in the blank because the negative portion is already taken care of.

Answer:

The answer is 10

Step-by-step explanation: