Mathematics Middle School

A motorboat moves across a lake at a constant speed. When it begins, it is 55 km from the shore. After 12 minutes, it is 19 km from the shore. Which function describes the motorboat's distance from the shore?
A. y = –12x + 19
B. y = –3x + 55
C. y = 3x + 55
D. y = –12x + 55

Answers

Answer 1

Answer:

y= _3x+55

Step-by-step explanation:

we conqet two points
(0,55)  (12,19)

55=B                       subsiquent two points into the equation
19=a,12+55
a=-3
b=55
so we choose B

A Motorboat Moves Across A Lake At A Constant Speed. When It Begins, It Is 55 Km From The Shore. After
Answer 2

Answer:-3x=55

Step-by-step explanation:I had to do it

Related Questions

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Answers

Answer:  -31

Step-by-step explanation:

[tex]a_{19}[/tex] =5+(19-1)(-2)                          then our BODMAS method

[tex]a_{19}[/tex] =5+18×(-2)

[tex]a_{19}[/tex] =5-36

[tex]a_{19}[/tex] = -31

-31 is the correct answer!

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Answers

Answer: NOT A

Step-by-step explanation:

did u already answer this question or still need help with it?

Can some1 pls help me with this:

Answers

Answer:

your answer is none of these

Step-by-step explanation:

refer the attachment

gamsahamnida

Which of the following fractions represent 87.5%

d) None of this

don't add links please.

Answers

Answer:

It’s A

Step-by-step explanation:

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Answers

Answer:

306.75

Step-by-step explanation:

Just subtract 372 from 65 1/4

Answer:

306.75

Step-by-step explanation:

the product of a number and three increased by four is the same as fourteen less than the product of twelve and a number

50 points, PLS ANSWER ASAP

Answers

Answer:

Let the number be x.

[tex]3*x+4=12*x-14[/tex]

[tex]3x+4=12x-14[/tex]

Subtract 4 from both sides:

[tex]3x+4-4=12x-14-4[/tex]

[tex]3x=12x-18[/tex]

Subtract 12x from both sides:

[tex]3x-12x=12x-18-12x[/tex]

[tex]-9x=-18[/tex]

Divide both sides by -9:

[tex]\frac{-9x}{-9} =\frac{-18}{-9}[/tex]

[tex]x=2[/tex]

The number is 2.

The Number is 2

What is Number?

A Number is an arithmetic value used for representing the quantity and used in making calculations.

Given that the product of a number and 3 is equal to the 14 less than product of twelve and that number.

Let the number be x

3x + 4 = 12x - 14

12x - 3x = 14 + 4

9x = 18

x = 2

Hence, the required number is 2.

For references on numbers, click;

https://brainly.com/question/17429689

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The model shows the addition expression 18 + 12.

A model containing 3 rows of 6 orange squares and 3 rows of 4 blue squares.

One expression that is equivalent to this sum is
.

Answers

Answer:

It's simple.

Step-by-step explanation:

now since you solved some of it, 18 + 12 = 30 An expression that is equivalent to this sum is 30.

Answer:

3(6+4)

Step-by-step explanation:

Please Help! Show your work

The Cost C (in dollars) of making n watches is represented by C=15n+85. How many watches are made when the cost is $385?

Answers

Answer:

The number of watches made is 8

Step-by-step explanation:

SO the equation is C=15n+85 where C is the total cost and N is the amount of watches

1)plug in C

385=15n+85

2)move 85 to the other side so it would become -85

385=15n+85 → 385-85=15n → 100=15n

3)divide 15 from both sides

100/15=15n/15 → 25/3=n

since the number of watches can't be a fraction, we round to the lowest number which is 8(24/3)

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This graph shows the weights of some rocks in Jonathan's rock collection.
Weights of rocks
How much heavier is the heaviest rock than the lightest rock?
Write your answer as a proper fraction, mixed number, or whole number.

Answers

Answer:

5/8oz.

Step-by-step explanation:

7/8-2/8=5/8

=5/8oz.

Hope this helps :)

how can you use properties of operations to evaluate expressions?

Answers

[tex] \huge \underline { \bf {Answer :-}}[/tex]

When evaluating an expression, proceed in this order:

parentheses are done first.exponents are done next.multiplication and division are done as they are encountered from left to right.Addition and subtraction are done as they are encountered from left to right.

♡hope it helps~

parentheses, thank you do exponents following with multiplication and division from left to right

the number of tigers increased from 25 to 40 over a short period of time. What is the percentage increase in the number of lions? Round your answer to the nearest tenth of a percent. *

Answers

75 percent increase
explanation: 40-25=15
then 15/original amount=.75 or 75 percent
Check: .75x25+25=40
60% increase

40-25=15

15 of 25 is 60% (you can check this too because 25x.6 is 15)

The question is below.

Answers

The ratios are 4:2:3:3 = 1 : 1/2 : 3/4 : 3/4
The ratios are 4:2:3:3 =1

Find the sum.

−10+(−34)

Answers

Answer:

= -4

Step-by-step explanation:

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PLS help i need this done now!

Answers

Answer:

3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Please help me my homework is due in 30 mins and I'm stuck on the last question. In this question, I'm working with a recipe where I have to make a recipe for 12 a recipe for 30. "Notice that the original recipe calls for [tex]\frac{1}{4}[/tex] cup of water. If you put [tex]\frac{3}{8}[/tex] cup of water, by how much have you multiplied the original recipe? How many people will your new recipe serve?".

Answers

Answer:

2.5 times, 30 people

Step-by-step explanation:

The recipe will be multiplied 2.5 times (3/8 ÷ 1/4). Therefore, it will serve 30 people (12 * 2.5)

Answer:

30

Step-by-step explanation:

fy the sequences of transformations based on whether or not they prove the congruency of the shapes by mapping shape I ont a reflection across the y-axis, followed by a 90° clockwise rotation about the origin, and then a translation left 18 units a 90° clockwise rotation about the origin and then a translation left 18 units a 90° counterclockwise rotation about the origin, followed by a reflection across the y-axis, and then a translation left 18 units a 90° clockwise rotation about the origin, followed by a reflection across the y-axis, and then a translation right 2 units a 180° rotation about the origin, followed by a reflection across the y-axis, and then a 90° clockwise rotation about the origin a reflection across the y-axis, followed by a 90° counterclockwise rotation about the origin, and then a translation right 2 units Maps Shape I onto Shape II Does not Map Shape l onto Shape II​

Answers

Answer:

Step-by-step explanation:

10, 8

-8, -8

Transformation is a method required to resize or change the orientation of a given shape or figure. The required answer is:

i. Statements b and d would map Shape l onto Shape II​ii. Statements a, c, e, and f does not map Shape l onto Shape II​

Transformation is a method required to resize or change the orientation of a given shape or figure. The types of transformation are translation, reflection, rotation, and dilation.Translation is a method that requires moving every point in a given shape in the same direction and same unit.

Reflection is a method that involves flipping a given figure about a given reference point or line. Rotation is a method that required turning a given figure at an angle about a reference point. Dilation is a method in which the length of the sides of the figure is either increased or decreased.Thus the answers to the question are listed as follows:

a. a reflection across the y-axis, followed by a 90° clockwise rotation about the origin, and then a translation left 18 units. Does not Map Shape l onto Shape II​b. a 90° clockwise rotation about the origin and then a translation left 18 units Answer: Maps Shape l onto Shape II​c. a 90° counterclockwise rotation about the origin, followed by a reflection across the y-axis, and then a translation left 18 units d. Does not Map Shape l onto Shape II​d. a 90° clockwise rotation about the origin, followed by a reflection across the y-axis, and then a translation right 2 units Answer: Maps Shape l onto Shape II​e. a 180° rotation about the origin, followed by a reflection across the y-axis, and then a 90° clockwise rotation about the originAnswer: Does not Map Shape l onto Shape II​f. a reflection across the y-axis, followed by a 90° counterclockwise rotation about the origin, and then a translation right 2 units. Does not Map Shape l onto Shape II​.

For more clarifications on the reflection of a figure, visit: https://brainly.com/question/20840412

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PLZ HELP ME ANSWER THESE TWO QUESTIONS

Answers

Answer:

2. 18,000/90/20  

3. 54,000/90/60

Step-by-step explanation:

When you divide those you get 10 which can also be a factor.

What is the slope of a line that contains the points, (2x, y) and (x, 37)

Answers

Answer:

I think it's 1/2 but I haven't done a problem like this in awhile so I'm not sure

Use the formula (y2-y1)/(x2-x1) to get the answer, which would be y-37/x in this case

DUE AT 8 MT!!! HELP ASAP!!!
Define a variable, set up an equation, then solve.
The sum of two numbers is 91. The smaller number is thirteen less than the larger number. Find both numbers.
x - large number
y - small number

Answers

Answer:

x=52 and y=39

Step-by-step explanation:

52 + 39 = 91

52 - 13 = 39

What you would do is make the equation:

91=X+(X-13)

Then, you would solve for X and once you find X, you would subtract 13 from it.

The answers should be 52 and 39.

What is the cost of 2.6 pounds of cheese at $6.75 per pound
WORTH A LOT OF POINTS BRAINLIEST IF CORRECT

Answers

Answer:

$17.55

Step-by-step explanation:

simply multiply the price by the amount of the product so: 2.6*6.75= 17.55

We can write the information given mathematically:
1 pound of cheese = $6.75

We need to find the price of 2.6 pounds of cheese and we can do this by multiplying both sides of the equation above by 2.6:

1 pound of cheese = $6.75
1 x 2.6 pounds of cheese = $6.75 x 2.6

2.6 pounds of cheese is $17.55

Hope this helps!

6.5 x 3.1
AND pls show how you got it

Answers

multiplied as numbers without commas. Then move the comma as many times as you have after it
6.5*3.1=2015
We have to nr.after commas
So 20,15

Answer:

20.15

Step-by-step explanation:

( Eliminate the decimal point temporarily)

65

x 31

-----

65

1950  ...... (add the zero)

------

= 2015  ( add the decimal point back between the 2 and the 0)

-----------

= 20.15

help help help help pls p

Answers

Answer:

10/12 simplified 5/6

Answer:

A) [tex]\frac{5}{6}[/tex]

Step-by-step explanation:

So solve, change the sign into multiplication and use the reciprocal of the second number.

To find the reciprocal,  flip the numerator and the denominator.

The reciprocal of 4/5 is 5/4.

So you have [tex]\frac{2}{3}[/tex]×[tex]\frac{5}{4}[/tex]

Multiply like a normal expression.

You get 10/12, which can be simplified to [tex]\frac{5}{6}[/tex]

find the gcf of 30 and 66

Answers

Answer:

6 is the GCF of 30 and 66

Step-by-step explanation:

The GCF of two non-zero integers, x(30) and y(66), is the greatest positive integer m(6) that divides both x(30) and y(66) without an remainder.

With her new trainer, Judy now bikes at an average speed of 24.1 MPH. That is 20.5% faster than she averaged with her old trainer. How fast did she bike, on average, before training with the her new trainer?

Answers

Answer: an average of 13.5 mph is very respectable

Step-by-step explanation:

Show your work

1. A cylindrical jar has a radius of 5 inches and a height of 9 inches. The jar is filled with marbles that have a volume of 20 in3. Use 3.14 for pi. Show work. Complete sentences.
a. What is the volume of the jar?

b. How many whole marbles can fit in the jar?

Answers

You would add all of your numbers up and divide by that answer and the number of your numbers and then that would be your answer

D. Complete the diagram to find the cost per class in the 8-class block.What is the cost per class

Answers

Answer:

what is the diagram

Step-by-step explanation:

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Answers

Answer: 29.5 inches tall.

Step-by-step explanation:

If Eva was 1.5 inches taller than her original height, she would be half of Maria’s height. So, we divide Maria’s height by two to find the height Eva would be if she was 1.5 inches taller.

62 / 2 = 31 inches

Next, to find Eva’s real height, we subtract 1.5 inches from the 31 inches. This is because Eva would only be half Maria’s height IF she was 1.5 inches taller, but she is not, so therefore we can deduct it.

31 - 1.5 = 29.5 inches

Therefore, Eva’s height is 29.5 inches tall. We can prove this, as well.

29.5 + 1.5 = 31 inches

31 * 2 = 62 inches

Therefore, Eva is 29.5 inches tall.

Sorry I don’t know.

help help help quick quick help quick

Answers

Answer:

1/7

Step-by-step explanation:

Answer:

B: 1/7 is the correct answer

DUE AT 8 MT!!! HELP ASAP!!!
Define a variable, set up an equation, then solve.
Max is already 224 miles into his road trip. If he is averaging 52 miles per hour and the trip is 640 miles total, how many more hours does he have left to drive?
x - hours left to drive

Answers

Answer:

8 hours.

Step-by-step explanation:

1. Subtract  640-224=416

2. Divide 416/52

3. 8 hours

Answer:

8 hours.

Step-by-step explanation:

We have been given that Max is averaging 52 miles per hour and the trip is 640 miles total. Max is already 224 miles into his road trip.

Let us find the remaining distance of trip by subtracting the distance already covered from total distance.

Remaining Distance = 640 miles - 224 miles

Remaining Distance = 416 miles

We will use formula: Time = Distance/Speed to find the number of hours Max still have to drive.

Time = 416 miles/52 miles/hour

Time = 416 miles/52 × hour/miles

Time = 416/52 hour

Time = 8 hours

Therefore, Max have left 8 more hours to drive.

Let r represent Rhonda’s age. Rhonda’s mom is 17 years younger than 5 times Rhonda’s age. Select the expression that represents the age of Rhonda’s mom.

Answers

17Divided by five hope this helps

Answer

R=3.4  

Step-by-step explanation:

Divide 17/5 to get 3.4

Hope this helps!

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