All categories

3 years ago

A 10.5-gallon aquarium is 2/3 full. How many more gallons of water does it take to fill the aquarium?

Mathematics

2 answers:

Natasha_Volkova [10]3 years ago

7 0

The answer is 3.5 gallons

djyliett [7]3 years ago

3 0

First, you need to find out how much water is already in the tank.
10.5 * 2/3.
And then you subtract the total amount and how much is already in
10.5-7 = 3.5

You might be interested in

Eight times the sum of 8 and some number is 80. What is the number?

Basile [38]

Answer: 8(8+x)=80

Step-by-step explanation: 8 times is shown in parenthesis, 8+x is the sum, and 80 is the answer

7 0

2 years ago

If line t has a slope of -1/4 what is the slope of any line perpendicular to line t

loris [4]

Answer: 4

Step-by-step explanation: Slopes that are perpendicular to each other are opposite reciprocals. So take the opposite of the sign, negative or positive. Then flip the numerator and the denominator. -1/4 goes to +1/4 goes to +4. Hope this helps!

6 0

2 years ago

30% of what number is 72? I need to find the whole number

omeli [17]

Answer:

answer is in the picture

8 0

2 years ago

Read 2 more answers

Please Helpp mee

Mekhanik [1.2K]

Answer:

Step-by-step explanation:

Perpendicular lines are lines whose slopes are negative reciprocals of each other

To find the slope of the line we are given, we can rearrange the equation

$4x - 5y = 4\\4x - 4 = 5y\\y = \frac{4}{5}(x) - \frac{4}{5}$

The slope of this line is $\frac{4}{5}$ , so the slope of the other line is $\frac{-5}{4}$

next, we can use the given point to find the equation $y = mx +b$

we know m, we can solve for b

$y = \frac{-5}{4}(x) + b\\-3 = \frac{-5}{4}(-2) + b\\-3 = \frac{5}{2} + b\\\frac{-6}{2} = \frac{5}{2} + b\\$

$b = \frac{-11}{2}$

$so,\\y = \frac{-5}{4}(x) - \frac{11}{2}$

4 0

2 years ago

Tomb trees are standing side-by-side in the sunlight one is 50 feet tall and the other is 20 feet tall if the taller tree cast a

8090 [49]

Answer: Length of shorter tree = 7.2 feet .

Step-by-step explanation:

Given : Height of two trees as 50 feet and 20 feet.

At same time the angle made by sun rays would be same for both trees.

Both trees are vertical to the ground making right angle so triangles made by both triangles must be similar.

Corresponding sides of similar triangles are proportional.

So $\dfrac{\text{length of the shadow of the shorter tree}}{\text{height of shorter tree}}=\dfrac{\text{length of the shadow of the bigger tree}}{\text{height of bigger tree}}\\\\=\dfrac{\text{length of the shadow of the shorter tree}}{20}=\dfrac{18}{50}\\\\\Rightarrow\ \text{length of the shadow of the shorter tree}=\dfrac{18}{50}\times20\\\\\Rightarrow\ \text{length of the shadow of the shorter tree} = 7.2$

So, Length of shorter tree = 7.2 feet .

7 0

2 years ago