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N76 [4]
2 years ago
7

Writing What is 20% of 70? Use pencil and paper. Write a percent problem that asks you to solve for the whole. Write a problem t

hat asks you to solve for the percent
is 20% of 70
(Type a whole number.)
Mathematics
1 answer:
trapecia [35]2 years ago
3 0

Answer:

= <em>1</em><em>4</em>

Step-by-step explanation:

So my way of doing it is to simply put 20% in decimal so

20= 0.20

Then multiply that by 70

0.20× 70 = 14%

There are probably other ways to do it but I find this way easier

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3 0
3 years ago
Suppose that a large mixing tank initially holds 900 gallons of water in which 50 pounds of salt have been dissolved. Another br
borishaifa [10]

Answer:

dA/dt= 12-2A(t)/900+t

Step by step Explanation:

Given:

rate of 3 gal/min

concentration of the solution entering is 4 lb/gal,

The equation of the solution can be expressed as

dA/dt = R(1)- R(2)

Where R(1)=( concentration of the salt at inflow* rate of input of given brine)

R(2)= ( concentration of the salt at inflow* rate of output of given brine)

R(1)= 3 gal/min× 4 lb/gal=12Ib/min

But the solution is been pumped slowly, the rate of the accumulation can calculated as;

(3 gal/min- 2 gal/min)=1gal/min

But after t min we will be having 900+t gallons present in the tank

CHECK THE ATTACHMENT FOR COMPLETE EXPLANATION

7 0
3 years ago
What is 2x-3/4(2x+80)
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Answer:

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3 0
3 years ago
The perimeter of a rectangular garden is 26 ft. The length is 3 ft more than the width. Find the length
Eddi Din [679]

Answer:

Length = 8 ft.

Step-by-step explanation:

The perimeter of a rectangle can be represented by the formula P = 2w + 2l, where w is the width and l is the length.

Given what we're told, we can represent the length for this problem using the equation l = w + 3

Thus, to find the length, we plug in everything we know:

26 = 2(w +3) + 2w

26 = 2w + 6 + 2w

26 = 4w + 6

20 = 4w

5 = w

l = 5 + 3 = 8

4 0
1 year ago
All circles are _____ to each other. congruent concentric parallel similar
docker41 [41]
The answer is similar because paraell is lines and not all circles are congruent
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2 years ago
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