Mathematics Middle School

Plz help! (I will give brainliest)
It took a boat 4 hours to travel downstream 120 miles. Upstream, the same trip took 6 hours. Find the rate of the current and the speed of the boat in still water.

Answers

Answer 1

Answer:

25 mph, 5 mph

Step-by-step explanation:

Speed of the boat = xSpeed of the current = y

Travel downstream, speed is:

x + y = 120/4 = 30

Travel upstream, speed is:

x - y = 120/6 = 20

Add up the equations:

x + y + x - y = 30 + 202x = 50x = 25

Find y:

y = 25 - 20 = 5

Speed of the boat is 25 mph

Speed of the current is 5 mph

Related Questions

Simplify the expression: 4x+2+12x+17

Answers

4x + 2 + 12x + 17

= 4x + 12x + 2 + 17

= 16x + 19

Answer:

[tex]4x + 2 + 12x + 17 \\ = (4 + 12)x + (2 + 17) \\ = 16x + 19[/tex]

Can someone really help me on this ill give brainliest to the first answer

Answers

Answer:

38/z

Step-by-step explanation:

Key skills: Fractions, Division, Variables

1) 38 is being divided by a variable known as z.

2) 38 being divided by z would be the same as 38/z

Have a nice day! Hope you understood!

Answer:

38÷z

Step-by-step explanation:

I think that is right so sorry if not

Which is less: -54 + 17 or 35 + (-61)? Show your work

I will give Brainly! Pls, help!

Answers

Answer: -54+17 is less

Step-by-step explanation:

This is true because a positive number + a negative number is like subtracting a number. 35+(-61) or 35-61= -26 and -54+17=-37.

ok, let's go
-54 + 17 = [original]
17-54 = [move numbers to make easier to read]
17-54 = -37 [simplify]

35 + (-61) = [original]
35 - 61 = [adding a negative is the same as subtracting a positive]
35 - 61 = -26 [simplify

-37 is smaller than -26

ANSWER
-54 + 17 is less

Please help me I have to have it done today!
Correct answers please because this is a big part of my grade but i don't understand!

Answers

Answer:

I couldn't figure out the very first one at the very top, but here are the rest

Step-by-step explanation:

The first one is No, because  f one equation has subtraction, and the other has addition, your going to come out with different outputs. Then number 3 is 372.43. and the last one is 46 - 2.5 which equals 43.5

Answer:

I couldn't figure out the very first one at the very top, but here are the rest

Step-by-step explanation:

The first one is No, because  f one equation has subtraction, and the other has addition, your going to come out with different outputs. Then number 3 is 372.43. and the last one is 46 - 2.5 which equals 43.5

Mrs. Nichols takes the trash out every Monday and mows her lawn every 4 days. If she does both activities this Monday, how many days later will she do both activities on the same day again?

Answers

Answer:

fftd

Step-by-step explanation:

It would take week and a couple of days.

which is the smallest?
-1 or -1/2

Answers

Answer:

-1 as minus one whole is less than minus 0.5

Step-by-step explanation:

Answer:

-1

Step-by-step explanation:

-1/2 equals -0.5 which is closer to 0 than -1

For negative numbers, the number closest to 0 is the bigger number thus resulting in -1 being less than -1/2.

help me with this please!!!

Answers

Answer:15

Step-by-step explanation: since it’s 4 to3 and if you multiply 4 and 5 you get 20 so you multiply 3 and 5 to get 15. Hope it helps!

Pretty easy math question

-4/7 x (-5)

make sure final answer is in simplest form.

Answers

The answer is 20/7 in improper fraction to make into the simplest form you need to change it into a mixed fraction it would turn out to be 2 6/7

help me in these im stuck in all the question plz and ty and ill give u 50pt on my next question

Answers

Answer:

1. $1.07 of each sponge

2. 25% prefer sprite  

3. i don't know that one, i'm sorry.

4. 25.65    (that one u can use a calculator)

does this help??

Number 1 is 1.07 number 2 is 25% prefer sprite number 3 is 1< 16,6<16,10<16 number 4 is 25.65 (btw I’m not sure if these are completely correct but these would be my answer if I were in your situation

Donnie is 7 years old. Donnie's age is 3 years less than half of Ana's age. The relationship between their ages can be modeled by the equation 12x−3=7, where x is Ana's age. How old is Ana?

Answers

x=5/6

but you cant be 5/6 years old

But I thought about it and

I'm not exactly sure how I got this but

20 divided by 2 is 10

10-3=7

so maybe 20 years old?

I think Ana might be 9 ? I’m sorry if I am wrong I don’t even think I did the math correctly

Can you please help me, It will mean a lot!

Answers

Answer:B and E

Step-by-step explanation:because the circle is on -5 and it toward right side and has line under inequality sign.

I'm pretty sure that answer is B

Hope this helps

6/7 Find the slope of the line.

Answers

The slope, if you have a graph, is the angle the line is going down so look at this graph:
m=0? i would need to see a picture

Please Help !!!!!!!!!!!
the second choices are $4, $6, $8, $32

Answers

Answer would be 8, 4

Answer:

$6

Step-by-step explanation:

Drag the cards to create a number that matches these rules.
The number ends in the tenths place.
20 is the nearest ten when rounding numbers(4,1,6)

Answers

2x 5$unwnnnwwdww hey hye Ed

identify the rate of change (slope) in the table below.

Answers

-5
remember rise over run.

Please decrypt this! The right answer gets brainly!
The Number Station Broadcast: Denver 5, 7, 5, 9

Answers

What subject is this in so I can help

3) James has four identical cylinders filled with water. How many cones should he be able to fill with the water if the cones have the same radius and the same height as the cylinders? Explain.
10 points
A. 3 cones
B. 4 cones
C. 9 cones
D. 12 cones

Answers

Answer:

║∦║Hello Person║∦║Your answer should be:C. 9 Cones

Step-by-step explanation:

I hope this helped!

Brainliest would be appreciated!

Have a great day!

A reporter determines a baseball player betting average which is a ratio of numbers of hits to number of times at bar the result is shown on a calculator as 0.2121....

write this repeating decimal as a fraction

the fraction is .......​

Answers

Answer:

2121/10000

hope this helps

Step-by-step explanation:

Please Help !!!!!!!!!!!

Answers

Answer:

B

Step-by-step explanation:

Since the dot is not filled we can already take away c and d becuase it will not be equal to 2.

Next lets see which way its going.

The arrow goes right so it would be x>2

The answer that gives you that would be b.

The answer you are looking for is B.

Find the area of the rectangle. Show your work and answer in the space below

Answers

Answer:

99/10= 9.9

Step-by-step explanation:

2 2/5 x 4 1/8 = 9 9/10 = 99/10

Answer:
9.9 or 99/10 or 9 9/10

Step by Step Explanation:
4 1/8 x 2 2/5 = 9.9 = 9 9/10 = 99/10

which one is it is it a b c or d

Answers

The answer is D. B has the number 3 has the first numbers so that’s not it. C has the number 4 has the first numbers so thats not it. D is the only one that have different numbers in first numbers in the order (5, 8, 9)

Answer:

D

Step-by-step explanation:

the x (first number in the ordered pair) cant match with another x

in every other line, the x repeats which makes the function thing make a diagonal line instead. **khan academy explains it well btw**

I dont know how to do thisss stufff so um help plz :]

Answers

Answer:

bro just count the squares and how many there are that is the percentage

Answer:

36%

Step-by-step explanation:

36 squares are faded

help plz :))))))))))))))))))))))

Answers

Answer:

(1 3 5 7 9 )

Step-by-step explanation:

_8 _5 _2 this is the answer

PLSSS HELP I'M DEAD

Larry’s pet store made $30 before a pipe burst and he had to close early to get it fixed. He realized that he lost Three-fourths of a dollar each hour that the store was closed. If the expression that models this situation is 30 Negative three-fourths x, what is Larry’s profit if the store was closed for 8 hours?

Answers

Answer:

$24

Step-by-step explanation:

You will plug in 8 for x :)

30 - (3/4)x

Since he loses 3/4 a dollar for every hour he can't work, (3/4) x 8 = 6.  He will lose 6 dollars from this. 30 - 6 = 24.

His final profit is 24.

The awnser is $24 plz mark thanks so I can get more points plz

what is the full answer to, x to the power of 2 (x to the power of 5)?

Answers

Answer:

x^7

Step-by-step explanation:

I believe you want the product (x^2)(x^5).  The base (x) stays the same; the exponent of the product shown is the sum of 2 and 5:

x^(2 + 5) = x^7

Zxczxczxczxczxczxczxxccvvbbnmzzxxczzxcczzxxczzxcczxxczxxczxxc

Of the teacups in Whitney's Tea Shop, 2/5 are purple and another 1/10 are white. What fraction of the teacups are either purple or white?

a. 3/10
b. 1/2
c. 5/15
d. 2/5

Answers

1/2
2/5 is 4/10, and 1/10 makes 5/10, which is 1/2

Answer:

1/2

Step-by-step explanation:

its 1/2 because 2/5 is the same as 4/10 and 4/10 + 1/10 = 5/10 which equals 1/2.

Reagan is picking out fabric for her bedroom. She has 14 fabric samples, and 4 of them are striped.

What is the probability that a randomly selected fabric sample will be striped?

Write your answer as a fraction or whole number.

Answers

You should divide 14/4 which would get you 3.5. Multiply the 3.5 by 10 to get your answer. (35)

Answer:

There is a 4 in 14 chance/ 4/14

Step-by-step explanation

4 pieces of 14 pieces of fabric are striped so there is a 4 in 14 chance she will pull out a striped piece of fabric.

A weir is used to measure water flow in a channel. For a rectangular broad crested weir, the flow Q in cubic feet per second is related to the weir length L in feet and height H of the water by Q = 1.6LH3/2. Find the water height for a weir that is 3 feet long and has a flow of 38.4 cubic feet per second.

Answers

Answer:Find the water height for a weir that is 3 feet long and has flow of 38.4 cubic feet per second. SOLUTION: Therefore, the water height for the weir is 4 feet.

Answer:

the water height for the weir is 4 feet.

Step-by-step explanation:

1) What is d
ugydfiysdkhd

Answers

-72 bro, you have to get rid of the -6 by multiplying it so it cancels out and whatever you do to one side you do to another so 12 times -6 equal -72. D=-72 you can check it by plugging it in

please help meeeeeeeeeeeeeeee

Answers

Answer:

number 2 is true

Step-by-step explanation:

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