A cup contains some coffee. Sasha drinks 2/5 of the coffee. There is 120 ml of coffee left. How much coffee was in the cup at the start?

Answer:

11.8

Step-by-step explanation:

I think it is subtracting fractions.

First you turn the fractions into decimals then subtract it. After, you turn the decimal to a fraction but i am having a hard time doing that... the decimals by the way is 12.5 and 0.7 according to converters

Answer:

17 and 6/7 is right im pretty sure i had this question last year

Step-by-step explanation:

Each triangle Perimeter is 128 dm and 160 dm.

With similar geometric figures all around the dimensions, consider the ratios of the dimensions:

length = 1-dimension: a:b

area = 2-dimensions: a²:b²

volume = 3-dimensions: a³:b³

Given the areas (2-D) of the two figures, 75 dm² and 48 dm²

the a²:b² ratio is 25:16. Therefore, the ratio of the perimeters (1-D) would be √25: √16 or 5: 4.

Solving, 288  = x + (5/4)x

x = 128 dm

Therefore the other triangle = 288 - 128 = 160 dm.

One triangle Perimeter is 128 dm and the other is 160 dm.

Know more about Ratios: https://brainly.com/question/12024093

Answer:

b

Step-by-step explanation:

Answer:

Step-by-step explanation:

form. Meaning you need make both fractions improper

Answer:

The anwser is C

Step-by-step explanation:

Answer:

c:104 in

Step-by-step explanation:

Here are the pairs matched with their products:

- (-5)(4.2) matches with -21

- (-7)(-3) matches with 21

- (2.5)(-9) matches with -22.5

Pairs (4) and (5) do not have corresponding products in the given options.

Answer:

0.75

Step-by-step explanation:

9 ÷ 12 = 0.75

hope this helps...

Answer:

9/12  = 3/4 = 0.75

Step-by-step explanation:

Answer:

w

Step-by-step explanation:

Answer:

The answer would be converging boundaries.

Step-by-step explanation:

A convergent boundary is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other causing a process known as subduction.

please mark as brainliest please :)

Answer:

y=(x*9)-4

Step-by-step explanation:

for example:

0*9=0

0-4=-4

4*9=36

36-4=32

2*9=18

18-4=14

hope this helped ;)

Answer: A 1/5

Step-by-step explanation:

Probability of getting blue marble, red marble, white marble, and purple marble are 1/4, 2/5, 1/5 and 3/20 respectively.

What is probability ?

Probability shows possibility to happen an event, it defines that an event will occur or not. The probability varies from 0 to 1.

Given that,

Number of blue marbles = 5,

Number of red marbles = 8,

Number of white marbles = 4,

And number of purple marbles = 3.

Total number of marbles = 5 + 8 + 4 + 3 = 20

Probability of getting blue marble = number of blue marbles/total number of marbles

=5/20=1/4

Apply same formula,

Probability of getting red marble= 8/20 = 2/5

Probability of getting white marble = 4/20 = 1/5

Probability of getting purple marble = 3/20

Answer:

A 1/5

Step-by-step explanation:

Answer:

A negative correlation between the temperature and the amount of snow still on the ground.

A negative correlation between the number of digital photos uploaded to a website and the amount of storage space that is left.

Step-by-step explanation:

These are the two relationships that are most likely to be causal. Causal relationships are those in which one aspect is the cause of the second one being described. Moreover, a negative correlation is one in which one aspect of the relationship increases while the other one decreases. In the first example, as the temperature goes up, this causes the amount of snow on the ground to go down. In the second example, as you upload more pictures to a website, there is less storage space.

Answer:

Perimeter is 12mm, height is \(2\sqrt3\)mm in simplest radical form, and 3.5mm in approximate decimal form.

Step-by-step explanation:

The perimeter is easy; since it's an equilateral triangle, all sides are the same length of 4, so you can just do 3*4 (3 sides, 4mm each) to get a perimeter of 12.

For the height, you can see that it forms two right triangles, each with a given base of 2 and a hypotenuse of 4. We can apply the pythagorean theorem (\(a^2+b^2=c^2\)) here to find the missing leg length of the smaller right triangles, which is equal to the big triangle's height.

I've enclosed an attachment for that.

Hope this helps!

Answer:

The volume (V) of a cone can be calculated using the formula: V = (1/3)πr^2h, where r is the radius and h is the height.

Substituting the given values, we get:

V = (1/3) x 3.14 x 9^2 x 16

Calculating this expression gives us:

V = 1810.08 cubic inches

Rounding to the nearest hundredth gives us:

V ≈ 1810.08 cubic inches (rounded to two decimal places)

Therefore, the volume of the cone is approximately 1810.08 cubic inches.

Answer:

1363.04

Step-by-step explanation:

V = (1/3) * 3.14 * 9^2 * 16

Simplifying:

V ≈ 1363.04 cubic inches

Step-by-step explanation:

7 : 5

\( \binom{7 \: 14 \: 21 \: 28 \: 35}{5 \: 10 \: 15 \: 20 \: 25} \)

50 : 20

\( \binom{50 \: 25 \: 5}{20 \: 10 \: 2} \)

3 : 8

\( \binom{3 \: 6 \: 9 \: 12 \: 15 \: 18}{8 \: 16 \: 24 \: 32 \: 40 \: 48} \)

18 : 48

\( \binom{18 \: 9 \: 6 \: 3}{48 \: 24 \: 16 \: 8} \)

Ratios must always remain proportional;

Whenever you multiply or divide one part by a number, you must do the same to the other part/s;

When it comes to division, you can divide by all common factors

Answer:

(To simplify the answers, I will refer to the first sentence of the question as part A and the second sentence as part B.)

Question 17

Part A: the square root is between 6 and 7

Part B: the square root is 6.5

Question 18

Part A: the square root is between 9 and 10

Part B: the square root is 9.4

(Extra: the answer in simplified radical form is 2√22)

Question 19

Part A: the square root is between 7 and 8

Part B: the square root is 7.9

(Extra: the answer in simplified radical form is 3√7)

Question 20

Part A: the square root is between 8 and 9

Part B: the square root is 8.7

(Extra: the answer in simplified radical form is 5√3)

Question 21

Part A: the square root is between 5 and 6

Part B: the square root is 5.5

Question 22

Part A: the square root is between 9 and 10.

Part B: the square root is 9.8

Step-by-step explanation:

First of all, it says you can use a calculator! If you do not know how to, let me know in the comments and I can try to help you out! Read the explanation to understand how to do this.

Question 17

Using a calculator, you get 6.48074069… for your decimal.

Rounding it to the nearest tenth, your answer would be 6.5

Now, to find the two consecutive whole numbers the square root is between…

However, there is another way to do this. Remember that 7x7=49. We know that 49 is greater than 42, so let’s see try out a number smaller than 7! 6x6=36. 42 is between 36 and 49, so the square root is between 6 and 7.

Another way to do this is… we know that the decimal is about 6.5, which is between 6 and 7, since those are the two whole numbers before and after that decimal!

Question 18

Using a calculator, you get 9.380833151… for your decimal.

This rounds to 9.4

The whole numbers surrounding this decimal are 9 and 10.

You can also do this by knowing that 9x9, or 9^2, is 81 and 10x10, or 10^2, is 100, and those are the numbers surround 88.

In non-decimal form (simplified radical), your answer can be 2√22.

Question 19

Using a calculator, you get 7.93725393… for your decimal.

This rounds to 7.9

The whole numbers surrounding this decimal are 7 and 8.

You can also do this by knowing that 7x7, or 7^2, is 49 and 8x8, or 8^2, is 64, and those are the numbers surround 63.

In non-decimal form (simplified radical), your answer can be 3√7.

Question 20

Using a calculator, you get 8.66025403… for your decimal.

This rounds to 8.7

The whole numbers surrounding this decimal are 8 and 9.

You can also do this by knowing that 8x8, or 8^2, is 64 and 9x9, or 9^2, is 81, and those are the numbers surround 75.

In non-decimal form (simplified radical), your answer can be 5√3.

Question 21

Using a calculator, you get 5.47722557… for your decimal.

This rounds to 5.5

The whole numbers surrounding this decimal are 5 and 6.

You can also do this by knowing that 5x5, or 5^2, is 25 and 6x6, or 6^2, is 36, and those are the numbers surround 30.

Question 22

Using a calculator, you get 9.84885780… for your decimal.

This rounds to 9.8

The whole numbers surrounding this decimal are 9 and 10.

You can also do this by knowing that 9x9, or 9^2, is 81 and 10x10, or 10^2, is 100, and those are the numbers surround 97.

Note: the symbol "^" means that the number following that symbol is an exponent. So 2^2 is 2 squared, \(2^2\), or 2 to the power of 2.

Hope that helps! <3

Disclaimer: I am not responsible for anything you get incorrect, as I only have the context and information you provide, and I give my response based on my knowledge supported with credible information from experts and online professional articles.

Answer:

Step-by-step explanation:1 gallon of paint paints 1/3 of the house and he had already painted 1/3 of the house with 1 gallon of paint. so the left is 2/3 of the house. and 2 gallon of paint paints 2/3 of the house so,2/3=2/3 which means D. he will cover 1,000 f2 of his apartment.

Answer: x = -4.6 or -14/3

Step-by-step explanation: you have to isolate the variable by dividing the sides that dont have a variable

Answer:

x=-14/3

Step-by-step explanation:

5-(3x+12)=17

-3x+3=17

-3x=17-3

-3x=14

x=-14/3

Hope this helps!

Answer:

x - y

Step-by-step explanation:

if x is greater than y subtraction will be the result with a positive number.

Answer:

The expression that is equivalent to (m−3n−2)−4 is m−7n−6. This can be determined by combining like terms on either side of the equation.

Answer:

560

Step-by-step explanation:

140 ÷ 5 = 28

28 x 20 = 560

please mark me as brainliest and correct me if im wrong

You could either use the propotional method or unitary method, but I am going to be using the porpotional method since it is more quick.

Step 1

So first we would convert  the numbers givin into a fraction by putting 5 over 140 and 20 over x which is the question mark.

Step 2

Then we would cross multiply, so multiply numbers that are diagonal to each other .140 would multiply with 20 and 5 would multiply with x.

Step 3

After we multiply (we do not multiply 5 with anything so it is just 5)we would have the equation , x times 5=2800. Since  we need to isolate x we would take 5 and put it under 2800 so it would be 2800 divided by 5.

Step 4

After we divide 2800 by 5 we would have 560 which equals to x , making it the ounces needed to feed 20 animals at the shelter .

Summarise

To briefly explain this the way to find the answer would be 20x40 divided by 5.

Hope this helped :D

The area of the parallelogram given in the image is 72 square units.

The area of a parallelogram is taken as base × height because it can be divided into two different parts and then reshuffled to make a rectangle, whose area is also base × height.

We know that the area of a parallelogram = base × height  ......(i)

Also, we are given quantities for base = 6 units

and height = 12 units

So, putting the values in equation (i), we get

⇒ area = base × height

⇒ area = 6 × 12

⇒ area = 72 square units

So, the area of the parallelogram given is 72 square units.

To know more about the Area of Parallelograms:

https://brainly.com/question/970600

Answer:

A approximation of 34 minutes and 30 seconds each day .

Step-by-step explanation:

First you would need to convert 4 hours to minutes , so 1 hour equals 60 minutes - 60 min = 1 hour, 60 min times 4 = 240 minutes in total. There are 7 days in total of the week, 240 minutes - 7 days of the week : 240 divided by 7 , equals a approaximation of 34 minutes and 30 seconds each day.

it is A. 0.25x - 6.50

You use distributed property first so the equation will be 3x - 1 - 2.75x - 5.50

Then you combine like terms so 3x - 2.75 will equal 0.25x

The subtraction symbol will stick with 1 making it -1 so the second part will be -1 - 5.50 will equal 6.50

And finally, the expression will be 0.25x - 6.50