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navik [9.2K]
3 years ago
6

How do I solve this problem?

Mathematics
1 answer:
kondor19780726 [428]3 years ago
6 0

Answer:

Its A

Step-by-step explanation:

4/5 - 0.5     Convert the fraction to a decimal:-

= 0.8 - 0.5

= 0.3

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3 1/2 × 1 1/2 × 2 =​
andrey2020 [161]

Answer:

38.5

Step-by-step explanation:

4 0
3 years ago
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A square corner of 16 square centimeters is removed
oee [108]

Option C:

Area of the remaining paper = (3x – 4)(3x + 4) square centimeter

Solution:

Area of the square paper = 9x^2 sq. cm

Area of the square corner removed = 16 sq. cm

Let us find the area of the remaining paper.

Area of the remaining paper = Area of the square paper – Area of the corner

Area of the remaining = 9x^2-16

                                     = (3x)^2-(4)^2

Using algebraic formula: a^2-b^2=(a+b)(a-b)

                                     =(3x-4)(3x+4)

Area of the remaining paper = (3x – 4)(3x + 4) square centimeter

Hence (3x – 4)(3x + 4)  represents area of the remaining paper in square centimeters.

8 0
3 years ago
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The number of students in a school increased by 25%between last year and this year. Last year there were 250 students in the sch
alexandr1967 [171]
I think it's 275 sorry if I'm wrong
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3 years ago
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After 4,000 gallons of water were added to a large water tank that was already filled to 3/4 of its capacity, the tank was then
dangina [55]

Answer:  The correct option is

(E) 80,000.

Step-by-step explanation:  Given that after adding 4,000 gallons of water to a large tank that was already filled to \dfrac{3}{4} of its capacity, the tank was then at \drac{4}{5} of its capacity.

We are to find the number of gallons of water that the tank hold when filled to capacity.

Let the tank can hold x gallons of water when filled to capacity.

Then, according to the given information, we have

\dfrac{3}{4}x+4000=\dfrac{4}{5}x\\\\\\\Rightarrow \dfrac{4}{5}x-\dfrac{3}{4}x=4000\\\\\\\Rightarrow \dfrac{16-15}{20}x=4000\\\\\Rightarrow x=4000\times20\\\\\Rightarrow x=80000.

Thus, the required capacity of the tank is 80,000 gallons of water.

Option (E) is CORRECT.

4 0
3 years ago
A painter mixes gray paint by using 1 gallon of black paint for every 7 gallons of white paint. How much black paint and how muc
kondaur [170]

Answer:

2.5 gallons of black paint

17.5 gallons of white paint

Step-by-step explanation:

4 0
3 years ago
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