What is CD?
A)7
B)10
C)13
D)21

Answer:

65 dollars

Step-by-step explanation:

Plug in the 3 as the x in the equation and solve.

f(x)=5(3)+50

f(x)=15+50

f(x)=65

And that's how you get the answer

Answer:

The answer is below

Step-by-step explanation:

The equation of a straight line is given as y = mx + b, where m is the slope and b is the y intercept.

Given that the equation of line c is y = 2x + 3, and line b is perpendicular to line c. Two lines are perpendicular if the product of their slope is -1. We can see that the slope of line c is 2, let [tex]m_1[/tex] be the slope of line c, hence:

[tex]2*m_1=-1\\\\m_1=\frac{-1}{2}[/tex]

Also, line b passes through (3, 6), hence the equation of line b is:

[tex]y-y_1=m_1(x-x_1)\\\\y-6=\frac{-1}{2}(x-3)\\\\y-6= \frac{-1}{2}x+\frac{3}{2}\\\\y=\frac{-1}{2}x+ \frac{15}{2}[/tex]

Line b has a slope of -1/2, and is perpendicular to line a, let [tex]m_2[/tex] be the slope of line a, hence:

[tex]\frac{-1}{2} *m_2=-1\\\\m_2=2[/tex]

Also, line a passes through (3, 6), hence the equation of line a is:

[tex]y-y_1=m_1(x-x_1)\\\\y-6=2(x-3)\\\\y-6=2x-6\\\\y=2x[/tex]

Answer:

$200

Step-by-step explanation:

120/3=40

So they spent $40 on each ticket.

40*5=200

They would spend $200 on five tickets.

Part 1) The surface that is shared by the two solids is the top of the cube that is the same that the square base of the pyramid

Part 2) The dimensions of this surface are 6 in x 6 in

Part 3) Molly needs to paint 228 square inches

Step-by-step explanation:

The picture of the question in the attached figure

Part 1) Which surface is shared by the two solids?

we know that

The surface that is shared by the two solids is the top of the cube that is the same that the square base of the pyramid

Part 2)  What are the dimensions of this surface?

The surface is a square with side length 6 inches

so

The dimensions of this surface are 6 in x 6 in

Part 3) what is the area molly needs to paint?

we know that

The area that Molly needs to paint is equal to the surface area of the cube plus the surface area of the pyramid minus two times the area of the surface that is shared by the two solids

so

therefore

Molly needs to paint 228 square inches

i hope this helps you

Answer:

Graph 1: perfect negative correlation

Graph 2: modest negative correlation

Graph 3: modest positive correlation

Graph 4: strong positive correlation

Graph 5. weak negative correlation

Step-by-step explanation:

If i'm wrong PLEASE correct me

The graph first is perfect negative correlation, graph second is the modest negative correlation.

It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.

[tex]\rm r = \dfrac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{{[n\sum x^2- (\sum x)^2]}}\sqrt{[n\sum y^2- (\sum y)^2]}}[/tex]

As we know, the coefficient of correlation varies between -1 and +1.

If r = +1 (means the relation between the variable is strong and positive)

If r = -1 (means the relation between the variable is strong but negative)

As we can see in the graph, the line goes down represents the negative correlation and the line goes up represents the positive correlation.

So, we can say:

The first graph is perfect negative correlation.

The second graph is modest negative correlation.

The third graph is modest positive correlation.

The fourth graph is strong positive correlation.

The fifth graph is weak negative correlation.

Thus, the graph first is perfect negative correlation, graph second is the modest negative correlation.

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Numbers aren't arranged properly so I'll try and do this. Please follow method as answer might differ cause of this

Test Number of Words Time(minutes)

A. 30. 4

B. 78. 15

C. 99. 22

Answer:

Step-by-step explanation:

To calculate Zane's unit rate/number of words per minute for which each test, we divide number of words in each test by time taken for that test

For test A, unit rate = 30 words/ 4 minutes = 7.5 words per minute

For test B, unit rate = 78 words/15 minutes = 5.2 words per minute

For test C, unit rate = 99 words/22 minutes= 4.5 words per minute

From the above Zane has the highest unit rate in test A and is therefore fastest in test A

Answer:

90° i think..........

The equation of a line in point-slope form is  (y + 8) = 4(x - 2).

We know lines have various types of equations, the general type is

Ax + By + c = 0, and the equation of a line in slope-intercept form is

y = mx + b.

Where slope = m and b = y-intercept.

the slope is the rate of change of the y-axis with respect to the x-axis and the y-intercept is the (0,b) where the line intersects the y-axis at x = 0.

Given, A line passes through the point (x₁, y₁) ⇒ (2,-8) and had a slope of 4.

We know the equation of a line in point-slope form is (y - y₁) = m(x - x₁).

∴ The equation of this line is (y + 8) = 4(x - 2).

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Answer:

3.2

Step-by-step explanation:

There are 356 hrs left to the trip.

534 hours are required to go from Washington to Boston [tex]dfrac13[/tex] of the trip is already finished. The time remaining to complete the journey would then be [tex]dfrac23[/tex]of the way. To get the number of hours left to the trip is shown below:

[tex]534 hours[/tex] ×[tex]2/3[/tex] [tex]=\frac{534}{3}[/tex]

[tex]= (178)(3)(2)/3[/tex]

[tex]=356 hrs[/tex]

Boston, Massachusetts is roughly 450 miles southwest of Washington. There are numerous ways to travel from Boston to Washington, DC due to the proximity of the two cities, including via rail, airline, bus, and vehicle.

Your best option for getting from Boston to Washington, DC will depend on your individual needs, including how much time you want to spend on the road, your financial situation, and the specific points of origin and destination in each city. Flying will get you there the quickest, and because there are so many direct flights, it can also be relatively economical.

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Answer:

0.915 meters

Step-by-step explanation:

0.305 x 3 = 0.915

Answer:

0.915

Step-by-step explanation:

Answer:60 is the answer hope that helps

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

Day 1) 8

Day 2) 8+6 =14

Day 3) 14+6=20

Day 4) 20+ 6=26

Day 5) 26+6=32

8+14+20+26+32=100

Answer:

My thought is 7, but I may be very well wrong.

Step-by-step explanation:

Answer:

43

Step-by-step explanation:

Substitute x = 3 into the expression, that is

5(3)² - 2 = 5(9) - 2 = 45 - 2 = 43

Answer:

-15

General Formulas and Concepts:

Pre-Algebra

Algebra I

Step-by-step explanation:

Step 1: Define Expression

(22 - 6x + 9) - 2(22 - 3x + 1)

Step 2: Simplify

Answer:

-15

Step-by-step explanation:

Answer:

A.6-5    B. 5-15    C.5-5          D.23-14     E.1-12    F. 15-2

   1-4       14-1              9-8          5 - 1            3-10          10-2

G. (-)5-11     H.20-0       I. (-)3-11

       1-15        20-0             0-1

Step-by-step explanation:

ex a. top left cant be lower than 1 or 5 (so I put 6)

   The top right can't be lower than 1  

   The bottom left can't be lower than -3

Answer:

I didn't find any results but if I find one I let you know

Step-by-step explanation:

I hope that help's??

Answer:

Jada's amount: 7h = m

Andre's amount: 4h + 9 = m

h = hours

m = money (total cost)

The system of equations that represents the situation is yx = y.

Step-by-step explanation:

The system is yx = y, since the amount of dollars per hour multiplied by the amount of hours, plus any amount (if needed) will equal the total amount of money that Jada and/or Andre receives.

Hope this helps! :D

The difference between her best time and her worst time is equal to 0.26 seconds.

What is algebra ?

Algebra is a branch of mathematics that deals with various symbols and the arithmetic operations such as division , multiplication , etc.

Jodie has to swim for 100 meters. The four of her times to cover this distance are 22.98 seconds, 23.09 seconds, 23.06 seconds, 22.83 seconds.

Let's find the time per sec to swim at each instances.

So ,

100 meters in 22.98 seconds meant :

= 100 / 22.98

= 4.35 m/sec

Similarly ,

100 meters in 23.09 seconds meant :

= 4.33 m/sec

100 meters in 23.06 seconds meant :

= 4.34 m/sec

100 meters in 22.83 seconds meant :

= 100 / 22.83

= 4.38 m/sec

So , we can find out that Jodie swims distance of 100 meters fastest on speed of 4.38 m/sec in 22.83 seconds and slowest on speed of 4.33 m/sec in 23.09 seconds.

The difference between her best time and her worst time is :

= 23.09 - 22.83

= 0.26 seconds

Therefore , the difference between her best time and her worst time is equal to 0.26 seconds.

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Answer:

x = 32, y = 51

Step-by-step explanation:

You know the longest side of ΔTUS is 13m and the longest side of ΔMNP is (2x-y). Thus:

2x - y = 13 --- Equation 1

You know the sum of angles in a triangle is 360°. Two of the angles are given in ΔMNP (142° & 24°) and the remaining angle is (2x-50)°. Thus:

142 + 24 + 2x - 50 = 180

2x + 116 = 180

2x = 180 - 116

2x = 64

x = 64 ÷ 2

x = 32 --- Equation 2

Substitute x = 32 into Equation 1:

2(32) - y = 13

64 - y = 13

-y = 13 - 64

   = -51

y = 51 --- Equation 3

Answer:

x = 32, y = 51

Step-by-step explanation:

Since the triangles are congruent then corresponding angles and sides are congruent, then

∠ U = ∠ N and NP = US

Require to find ∠ N

∠ N = 180° - (24 + 142)° ← sum of angles in triangle

      = 180° - 166°

      = 14°

Thus

2x - 50 = 14 ( add 50 to both sides )

2x = 64 ( divide both sides by 2 )

x = 32

and

NP = US

2x - y = 13 ← substitute x = 32

2(32) - y = 13

64 - y = 13 ( subtract 64 from both sides )

- y = - 51 ( multiply both sides by - 1 )

y = 51

Answer:

24.17

Step-by-step explanation:

Answer:

$24.17 per feet

Step-by-step explanation:

290/12=24.1666...

24.16666 rounds to 24.17

Answer:

A. y = -1/4x + 1 1/2

B. The rate of change is losing/decreasing -1/4 (y axis unit) per (x axis unit)

Step-by-step explanation:

A. Your equation is 2x + 8y = 12

so solve this for y like any other other question. Start by subtracting 2x from both sides: 8y = -2x + 12

then divide both sides by 8 to isolate y: y = -2/8x + 12/8

simplify your equation: y = -1/4x + 3/2

turn 3/2 into a mixed fraction: y = -1/4x + 1 1/2

B. The rate of change is the same thing as the slope but you say it with units. I cant see a scenario but you can say something like:

The rate of change is losing/decreasing -1/4 (y axis unit) per (x axis unit)

Answer:

a+b<280

25a+30b less than or equal too 10000

Step-by-step explanation:

Answer:

Step - by - step explanation.

–3(0.15 – 0.2 + 0.25p) is equivalent to –3(-0.05 + 0.25p) and 0.15 – 0.75p

An equation is an expression used to show the relationship between two or more numbers and variables.

Given that:

–3(0.15 – 0.2 + 0.25p)

simplifying the expression:

=  –3(-0.05 + 0.25p)

Further simplification gives:

= 0.15 – 0.75p

–3(0.15 – 0.2 + 0.25p) is equivalent to –3(-0.05 + 0.25p) and 0.15 – 0.75p

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Answer:  –3(–0.05 + 0.25p)

Step-by-step explanation:

Answer:

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

Let the mother's present age is m and son's present age is s.

3 years later

3 years ago

Answer:

ROC = 0

Step-by-step explanation:

Even though the x-values are changing, the y-values say the same; no change