1. Long distance phone calls cost 75 cents plus 15 cents for each minute. Write and solve an expression to calculate the cost of a 9-minute phone call.

Answer:

10 3/13

Step-by-step explanation:

Answer:

[tex]\large\boxed{\dfrac{133}{3}=10\dfrac{3}{13}}[/tex]

Step-by-step explanation:

[tex]\dfrac{133}{13}=\dfrac{130+3}{13}=\dfrac{130}{3}+\dfrac{3}{13}=10+\dfrac{3}{13}=10\dfrac{3}{13}[/tex]

Answer:

x^2+6x+2 = (x+3)²-7

the vertex is minimum and its coordinates is (-3,-7)

Look at the photo below for more info.

Answer:

For 2.5 x - 1.75 = 5 (7 - 0 5 x) ,   x  = 1.47/1.1

Step-by-step explanation:

Here, the given equation is :  2.5 x - 1.75 = 5 (7 - 0 5x)

By DISTRIBUTIVE PROPERTY:

A(B -  C) =  AB - AC

Solving for the value of x , we get:

2.5 x - 1.75 = 5 (7 - 0 5 x)

⇒ 2.5 x - 1.75 = 5 (7)  - 5 (05 x)

⇒ 2. 5 x - 1. 75 = 35 - 25 x

or, 2. 5 x + 25 x = 35 + 1. 75

or, 27 . 5 x = 36.75

⇒ x =  36.75/ 27.5  =  7.35/ 5.5 = 1.47/1.1

or, x  = 1.47/1.1

Hence, for 2.5 x - 1.75 = 5 (7 - 0 5 x) ,   x  = 1.47/1.1

Answer:

[tex]\large\boxed{\sqrt{108}=6\sqrt3}[/tex]

Step-by-step explanation:

[tex]\sqrt{108}=\sqrt{4\cdot27}=\sqrt{4\cdot9\cdot3}\\\\\text{use}\ \sqrt{a\cdot b}=\sqrt{a}\cdot\sqrt{b}\\\\=\sqrt4\cdot\sqrt9\cdot\sqrt3=2\cdot3\cdot\sqrt3=6\sqrt3\\==========================\\\\\sqrt{108}=\sqrt{36\cdot3}=\sqrt{36}\cdot\sqrt3=6\sqrt3\\\\==========================\\\\\begin{array}{c|c}108&2\\54&2\\27&3\\9&3\\3&3\\1\end{array}\qquad108=2^2\cdot3^2\cdot3\\\\\sqrt{108}=\sqrt{2^2\cdot3^2\cdot3}=\sqrt{2^2}\cdot\sqrt{3^2}\cdot\sqrt3\\\\\text{use}\ \sqrt{a^2}=a\ \text{for}\ a\geq0\\\\=2\cdot3\cdot\sqrt3[/tex]

Answer:

B. -x + 8

Step-by-step explanation:

Given expression

[tex]\dfrac{8-4(x-6)}{4}[/tex]

Consider the numerator [tex]8-4(x-6).[/tex]

First, use distributive property:

[tex]8-4(x-6)=8-(4x-24)[/tex]

Open the brackets:

[tex]8-(4x-24)=8-4x+24[/tex]

Combine the like terms:

[tex]8-4x+24=(8+24)-4x=32-4x[/tex]

Again use distributive property:

[tex]32-4x=4\cdot 8-4x=4(8-x)[/tex]

Now, the expression is

[tex]\dfrac{4(8-x)}{4}=8-x\ \text{or}\ -x+8[/tex]

Answer:

c

Step-by-step explanation:

The slope-intercept form is y=mx+b, where m is the slope and

b is the y-intercept.

y=mx+b

m=−3

b=0

y=-3x+0

The required y-intercept of the given y = -3 is (0, 0)

Slope-intercept form of the line:

If the line have m slope and b as y-intercept then the equation of the line will be y = mx + b

Here we have given that the equation of the line

y = -3x

Make this equation like general form of slope-intercept form

y = -3x + 0

Therefore comparing with general form we have

Slope m = -3

y-intercept = b = 0

The coordinate will be (0, 0)

Therefore the correct option is (c)

This is the conclusion to the answer.

Learn more about slope intercept form of the line here-

https://brainly.com/question/16975427

#SPJ2

Answer:

900 minutes

Step-by-step explanation:

Plan A: 700 free minutes + 15 cents per minute over 700 ($40)

Plan B: 500 free minutes + 5 cents per minute over 500 ($50)

The charges for x minutes (assumed x>700) for plan A will be

40+0.15(x-700)

The charges for x minutes (assumed x>500) for plan B will be

50+0.05(x-500)

To find the value of x where both charges are the same, we equate

40+0.15(x-700)=50+0.05(x-500)

Operating

40+0.15x-105=50+0.05x-25

Simplifying

0.10x=90

x=900 minutes

Both plans would charge the same amount when 900 minutes per month are used

You left out how much flour each pizza needs. Without that info no one can answer teh question.

Answer:

3500

Step-by-step explanation:

I divided everything and I ended up just multiplying 70x50 which got me 3500. I'm sorry, but I don't know in what way to write the equation. I don't know if it's y=mx+b or some other way. all I was able to come up with was y=50x+70

Answer:

Step-by-step explanation:

Tip: say they are congruent if they have the same lines and seem to be same size of triangles.

For the how do you know part it can only be SSS, SAS, or SSA Good Luck Tried my best :).

Answer:

a. 4 represents the amount of pounds of strawberries each friend got.

b. 4 represents the number of friends who were sharing the strawberries.

Step-by-step explanation:

You need to analize the information given in the exercise.

You know that the total amount of pounds of strawberries that are shared equally is:

[tex]Total=20\ lb[/tex]

a. Then if the group of people is formed by 5 friends, you need to divide the total pounds of strawberries that by 5 in order to calculate the amount of pounds of strawberries each one of them got.

If in the equation [tex]20\div5=4[/tex], 5 represents the number of people, then 4 represents the amount of pounds of strawberries each friend got.

b. If each person got 5 pounds of strawberries, you can calculate the number of friends who was sharing them by dividing the total pounds of strawberries by 5.

So, if in the equation [tex]20\div5=4[/tex],  5 represents the pounds of strawberries per person, then 4 represents the number of friends who were sharing the strawberries.

The mathematics problem given, namely 20 divided by 5 equals 4, represents the principle of equally distributing 20 strawberries among 5 friends. Each friend gets 4 strawberries.

The subject of your question is mathematics. The equation 20 divided by 5 equals 4 represents how twenty pounds of strawberries can be equally divided among a group of five friends. This is a division problem, an essential operation in arithmetic.

The principle it is demonstrating is how to distribute something equally among a group. In this case, if we have 20 strawberries and need to distribute them evenly among 5 friends, each friend will receive 4 strawberries. This is represented mathematically as 20 (total strawberries) divided by 5 (number of friends) equals 4 (strawberries per friend). So, your equation is correct.

https://brainly.com/question/34253396

#SPJ3

Answer:

The answer is 148 degrees

Step-by-step explanation:

I'm pretty sure it is 148°... In my notes it says "if a tangent to a circle & a chord intersect at a point on the circle, then the measure of each angle they form is one-half the measure of its intercepted arc." Hope this helps...

Read more on Brainly.com - https://brainly.com/question/3819019#readmore

The measure of arc QPN is 148° if the measure of angle QNT is 74°.

Given a circle with center O.

TS is the tangent of the circle at point N.

From the figure, we have, ∠ONT = 90°, since the angle formed at the tangent by the diameter is always the right angle.

Now,

m∠ONT = m∠QNT + m∠ONQ

Substitute the values.

90° = 74° + m∠ONQ

m∠ONQ = 90 - 74 = 16°

Now, from triangle QNO, OQ = ON, since, both are radii of the same circle.

The angle which lies opposite to these sides will be also equal.

So, m∠ONQ = m∠OQN =  16°.

Now, by the angle sum property of a triangle, the sum of the interior angles of a triangle is 180°.

So,

m∠ONQ + m∠OQN + m∠QON = 180°

16° + 16° + m∠QON = 180°

m∠QON = 180° - (16° + 16°)

m∠QON = 148°

The measure of arc QPN is equal to the central angle = 148°

Learn more about Central Angles here :

https://brainly.com/question/29150424

#SPJ2

The complete question is given below:

Answer:

Pretty sure the answer is 20 :)

Answer:

20 inches

Step-by-step explanation:

From the question, diagonal of the television screen is given to be 25 inch and the  width of the television set is given to be 15 inches and we are asked to find the height of the screen.

We can solve this question using the Pythagoras theorem.

The Pythagoras theorem states that in a right-angle triangle;

opposite²  +  adjacent²  = hypotenuse²

From the question, the width is given to be 15 inches, the with is  our adjacent. Also the diagonal is given to be 25 inches, the diagonal is  our hypotenuse. And we were ask to find the height, the height is our opposite.

so;

opposite = ?  

adjacent = 15

hypotenuse = 25

Let opposite = x

we can now substitute into our theorem;

opposite²  +  adjacent²  = hypotenuse²

x²     +    15²  = 25²

x²   =   25²  -   15²

x²    =  625  -  225

x²   = 400

x    =  √400

x     =  20

opposite  =  20 inches

Since opposite is the height of the screen, then the height of the screen is 20 inches.

Therefore the height of the screen is 20 inches.  

Answer:

[tex]y = - \frac{2}{3} x - 5[/tex]

Step-by-step explanation:

slope intercept form is y =mx+b

m is the slope

b is the y intercept

if you have any questions feel free to ask :)

Answer:

True

Step-by-step explanation:

Horizontal lines with equation y = c where c is the value of the y- coordinates the line passes through are parallel to the x- axis and have a slope of zero.

Vertical lines with equation x = c where c is the value of the x- coordinates the line passes through are parallel to the y- axis and have an undefined slope.

Answer: Yes

Step-by-step explanation: Erica would be correct. 4x is called a term. When we see a variable next to a number which in this case is X, it's important to understand that this means multiplication.

We can also say that the expression 4x is a product of both 4 and X.

Final answer:

Erica is correct; the expression 4x is considered one term because it consists of a single element with a coefficient and a variable multiplied together.

Explanation:

Erica is correct in saying that the expression 4x has one term. In mathematics, a term is a single mathematical expression that may be a number, a variable, or numbers and variables multiplied together. The expression 4x consists of the number 4 and the variable x multiplied together, which forms a single term. It does not have any addition or subtraction signs that would separate it into multiple terms.

Answer:

A

Step-by-step explanation:

We take the percentage raise and convert to decimal by dividing by 100. Then multiply this with the salary before raise. This will give us the "raise amount".

Then we will add up all of the "raises" of 3 employees to get our answer.

Jane = 4/100 = 0.04

0.04*41,500 = 1660

John = 4.5/100 = 0.045

0.045 * 44,100 = 1984.5

Jack = 3/100 = 0.03

0.03 * 39,600 = 1188

Sum of all 3 raises:

1660 + 1984.5 + 1188 = $4832.5

From the answer choices, A is the closest, $4833

Answer: choice D

2x^5 - 6x^3 + 3x^2 - x

Explanation:

Polynomials in standard form always have the exponents decrease (ie go from largest to smallest) when we read from left to right. For choice D, the exponents from left to right are: 5, 3, 2, 1. This is decreasing order. The other answer choices do not have the exponents in decreasing order. The degree of the polynomial in choice D is a 5th degree polynomial since 5 is the largest exponent.

Answer:

$5728

Step-by-step explanation:

$4000 is deposited into an account with 4.8% interest.

We assume that there are no withdrawals from the account.

Then we are asked the determine the amount will be there in the account after 9 years.

From the formula of simple interest, the final amount in the account after 9 years will be [tex]4000(1 + \frac{4.8 \times 9}{100}) = 5728[/tex] dollars. (Answer)

Answer:

Co-ordinates of point R is (26,2)

Step-by-step explanation:

Given point:

Endpoint S(8,4)

Mid-point M of segment RS (17,3)

Let endpoint [tex]R[/tex] have co-ordinates [tex](x_2,y_2)[/tex]

Using midpoint formula:

[tex]M=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]

Where [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] are co-ordinates of the endpoint of the segment.

Plugging in values to find the midpoint of segment KN.

[tex]M=(\frac{8+x_2}{2},\frac{4+y_2}{2})[/tex]

We know [tex]M(17,3)[/tex]

So, we have

[tex](17,3)=(\frac{8+x_2}{2},\frac{4+y_2}{2})[/tex]

Solving for [tex]x_2[/tex]  

[tex]\frac{8+x_2}{2}=17[/tex]

Multiplying both sides by 2.

[tex]\frac{8+x_2}{2}\times 2=17\times 2[/tex]

[tex]8+x_2=34[/tex]

Subtracting both sides by 8.

[tex]8+x_2-8=34-8[/tex]

∴ [tex]x_2=26[/tex]

Solving for [tex]y_2[/tex]  

[tex]\frac{4+y_2}{2}=3[/tex]

Multiplying both sides by 2.

[tex]\frac{4+y_2}{2}\times 2=3\times 2[/tex]

[tex]4+y_2=6[/tex]

Subtracting both sides by 4.

[tex]4+y_2-4=6-4[/tex]

∴ [tex]y_2=2[/tex]

Thus co-ordinates of point R is (26,2)  (Answer)

Answer:

$60

Step-by-step explanation:

Let the company's fixed charge be "x"

And let the the hourly rate be "h"

Firstly, 2 hours + fixed = $110, we can write:

2h + x = 110

Next, 3 hours + fixed = $150, we can write:

3h + x = 150

We multiply the first equation by "-1" to get:

-1 * [2h + x = 110] = -2h - x = -110

Now we add this equation to the 2nd:

3h + x = 150

-2h - x = -110

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

h = 40

Hence, the hourly rate is $40

So, it would cost 1.5 * 40 = $60 for 1.5 hours

Answer:

Total number of Jelly beans in the sack = 72

Number of red beans = 36

Number of green beans = 12

Number of yellow beans = 12

Number of orange beans = 6

Number of black beans = 6

Step-by-step explanation:

Let total number of jelly beans be =[tex]x[/tex]

We are given fractions of different colors of beans. To find the exact number of beans we need to multiply the fraction with the total number of beans.

Fraction of total are red beans = [tex]\frac{1}{2}[/tex]

Number of red beans = [tex]\frac{1}{2}\times x= \frac{x}{2}[/tex]

Fraction of total are green beans = [tex]\frac{1}{6}[/tex]

Number of green beans = [tex]\frac{1}{6}\times x= \frac{x}{6}[/tex]

Fraction of total are yellow beans = [tex]\frac{1}{6}[/tex]

Number of yellow beans = [tex]\frac{1}{6}\times x= \frac{x}{6}[/tex]

Fraction of total are orange beans = [tex]\frac{1}{12}[/tex]

Number of orange beans = [tex]\frac{1}{12}\times x= \frac{x}{12}[/tex]

Number of black beans = 6

Total number of beans can be given as

[tex] \frac{x}{2}+\frac{x}{6}+\frac{x}{6}+\frac{x}{12}+6[/tex]

Since we assumed total number of beans to be [tex]x[/tex], so we have.

[tex] \frac{x}{2}+\frac{x}{6}+\frac{x}{6}+\frac{x}{12}+6=x[/tex]

Multiplying each term by 12 to remove fractions.

[tex] (12\times\frac{x}{2})+(12\times\frac{x}{6})+(12\times\frac{x}{6})+(12\times\frac{x}{12})+(12\times6)=12\times x[/tex]

[tex]6x+2x+2x+x+72=12x[/tex]

combining like terms.

[tex]11x+72=12x[/tex]

Subtracting both sides by [tex]11x[/tex]

[tex]11x+72-11x=12x=11x[/tex]

[tex]72=x[/tex]

∴ [tex]x=72[/tex]

Total number of Jelly beans in the sack = 72

Number of red beans = [tex]\frac{1}{2}\times 72= 36[/tex]

Number of green beans = [tex]\frac{1}{6}\times 72= 12[/tex]

Number of yellow beans = [tex]\frac{1}{6}\times 72= 12[/tex]

Number of orange beans = [tex]\frac{1}{12}\times 72= 6[/tex]

number of black beans = 6

Justin has 72 jelly beans in total. By dividing the total number accordingly, he has 36 red, 12 green, 12 yellow, 6 orange, and 6 black jelly beans.

Let's assume the total number of jelly beans Justin has is represented by the variable x. We know that half of them are red, so there are x/2 red jelly beans. Similarly, since 1/6 are green and another 1/6 are yellow, there are x/6 green jelly beans and x/6 yellow jelly beans. As for the orange jelly beans, they represent 1/12 of the total, which means Justin has x/12 orange jelly beans. We are given that there are 6 black jelly beans, which do not need to be divided into fractions. To find the total, x, we can write an equation considering all the portions mentioned and the known number of black jelly beans:

x/2 (red) + x/6 (green) + x/6 (yellow) + x/12 (orange) + 6 (black) = x

Finding a common denominator (12), we rewrite the equation:

6x/12 + 2x/12 + 2x/12 + x/12 + 6 = x

Combine like terms:

(6x + 2x + 2x + x)/12 + 6 = x

11x/12 + 6 = x

To solve for x, subtract 11x/12 from both sides:

6 = x - 11x/12

6 = x(12/12) - 11x/12

6 = (12x - 11x)/12

6 = x/12

Multiplying both sides by 12 gives us:

x = 72

So, Justin has a total of 72 jelly beans. Calculating the number for each color:

In conclusion, Justin has 36 red, 12 green, 12 yellow, 6 orange, and 6 black jelly beans, adding up to a total of 72 jelly beans.

Answer:

-42

Explanation:

(-6)(-7)(-1)

do (-6)(-7)

-negative sign and -negative sign= +positive sign

(-6)(-7)=42

(42)(-1)

+positive sign and -negative sign=-negative sign

answer:

-42

Answer: 15.5

Step-by-step explanation:

(10.5-7)+(4x3)

following PEDAS we do operations in parentheses first

10.5-7=3.5

4x3=12

we now have 3.5+12 as our intermediate expression

and 3.5+12 = 15.5

Answer:

15.5

Step-by-step explanation:

(10.5-7)+(4*3)

3.5+12

15.5

Answer:

4 weeks

Explanation:

Length of Lavita’s painting = [tex]1 \frac{2}{3} m=\frac{5}{3} m[/tex]

Length she was able to finish each week= [tex]\frac{3}{8}m[/tex]

Now,

If she is able to finish[tex]\frac{3}{8}m[/tex] in 1 week

Then

[tex]\frac{3}{8}m[/tex] = 1 week

1 m = [tex]\frac{8}{3}m[/tex] week

Therefore

[tex]\frac{5}{3} m=\frac{8}{3} \times \frac{5}{3} \text { week }[/tex]

= [tex]\frac{40}{9}[/tex]week

=4.44 week

= 4 weeks (approx.)

To fit two identical cars in a 23-foot 6-inch wide garage with 3 feet 6 inches clearance on each side and between the cars, the cars must each be 6 feet 6 inches wide.

The subject matter of your question is a math problem involving subtraction and division. To find out how wide the cars can be, you first need to determine the total available space for the cars. The total width of the garage is 23 feet 6 inches. However, you need to leave room for clearance on either side of the cars and in between them. The clearance is a total of 3 feet 6 inches multiplied by 3 (one for each side and one for between the cars), which is 10 feet 6 inches. Subtract this from the total width of the garage, and you get 13 feet available for the cars. Since the cars are identical, you simply divide this by 2. Each car can be 6 feet 6 inches wide.

https://brainly.com/question/33290490

#SPJ2

Answer:

[tex]y=8\cos \left(\dfrac{1}{2}x+\pi\right)+2[/tex]

Step-by-step explanation:

The equation of cosine function will be

[tex]y=a\cos (kx+b)+c[/tex]

Find [tex]a:[/tex]

The minimum y is [tex]y_{min}=-6,[/tex] the maximum  y is [tex]y_{max}=10,[/tex] so

[tex]a=\dfrac{1}{2}\cdot |-6-10|=\dfrac{1}{2}\cdot 16=8[/tex]

Find [tex]k:[/tex]

The period of the function is [tex]T=4\pi,[/tex] so

[tex]T=\dfrac{2\pi }{k}\Rightarrow k=\dfrac{2\pi }{4\pi }=\dfrac{1}{2}[/tex]

Find [tex]b:[/tex]

At [tex]x=0,\ y=y_{min}=-6[/tex]

Function [tex]y=\cos x[/tex] at [tex]x=0[/tex] has the value [tex]y=y_{max}=1,[/tex] so [tex]b=\pi[/tex] [translate by one-fourth of the period]

Find [tex]c:[/tex]

The graph has the midline [tex]y=\dfrac{10-6}{2}=2,[/tex] so [tex]c=2.[/tex]

Hence,

[tex]y=8\cos \left(\dfrac{1}{2}x+\pi\right)+2[/tex]

Answer:

(1, 3 )

Step-by-step explanation:

Given the 2 equations

y = 3x → (1)

x + y = 4 → (2)

Substitute y = 3x into (2)

x + 3x = 4, that is

4x = 4 ( divide both sides by 4 )

x = 1

Substitute x = 1 into (1) for corresponding value of y

y = 3 × 1 = 3

Solution is (1, 3 )

Answer:

x = 1 & y = 3

Step-by-step explanation:

y = 3x -----(1)

x + y = 4 -------(2)

sub(1)into(2)

x + 3x = 4

4x = 4

x = 1

sub x=1 into(1)

y = 3(1)

y = 3

Answer:

Total number of employees at Tia's toy store [tex]=9[/tex]

Step-by-step explanation:

To find the number of employees who worked on Tia's store .

We have to add the total number of values from the employee column.

As the question mentioned.

Each of the staff members have different number of hours of sleep on thanksgiving night.

So

The summation of the number of employees from the frequency table

[tex]=(1+0+4+2+1+1)=9[/tex]

So there are [tex]9[/tex] employees working on thanksgiving night in Tia's store.