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eimsori [14]
2 years ago
10

if a store offers a 20% discount, and the regular price of an item is x dollars, what is the discount price?

Mathematics
1 answer:
Virty [35]2 years ago
3 0
The discount price is .80x or 1-.20x.
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A girl obtained 32.8 marks in nepali and failed by 7.2 marks. What was the pass marks of the subject?
adoni [48]

Answer:

40 marks was the pass marks of the subject.

Step-by-step explanation:

32.8 + 7.2 = 40 marks         { basic addition theory based }

8 0
2 years ago
PRACTICE ANOTHER A piece of wire 18 m long is cut into two pieces. One piece is bent into a square and the other is bent into an
sergejj [24]

Answer:

Step-by-step explanation:

We have the equations

4x + 3y = 18   where x = the side of the square and y = the side of the triangle

For the areas:

A = x^2 + √3y/2* y/2

A = x^2  + √3y^2/4

From the first equation x = (18 - 3y)/4

So substituting in the area equation:

A = [ (18 - 3y)/4]^2 + √3y^2/4

A = (18 - 3y)^2 / 16 + √3y^2/4

Now for maximum / minimum area the derivative = 0 so we have

A' = 1/16 * 2(18 - 3y) * -3 + 1/4 * 2√3 y = 0

-3/8 (18 - 3y) + √3 y /2 = 0

-27/4 + 9y/8 + √3y /2 = 0

-54 + 9y + 4√3y = 0

y = 54 / 15.93

= 3.39 metres

So x = (18-3(3.39) / 4 = 1.96.

This is a minimum value for x.

So the total length of wire the square  for minimum  total area is 4 * 1.96

= 7.84 m

There is no maximum area as the equation for the total area is a quadratic with a positive leading coefficient.

3 0
3 years ago
What is the integer that makes the following subtraction sentence true:<br><br> 8 −? = –1
VashaNatasha [74]
8 - ? = -1. the missing number would be 9.
7 0
3 years ago
Find the 7th term of the sequence
NikAS [45]

Answer:

3rd option, 4096

Step-by-step explanation:

4⁰ = 1, 1st term

4¹ = 4, 2nd term

4² = 16, 3rd term

.

.

.

4⁶ = 4096, 7th term

Answered by GAUTHMATH

8 0
3 years ago
Please help me someone
katovenus [111]

Answer: Surface area is 169π

Step-by-step explanation:

A=\pi \cdot \:d^2

A=\pi d^2

A=\pi 13^2

A=169\pi

6 0
3 years ago
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