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Kay [80]
3 years ago
9

The price of a shirt was $38. It was reduced by 20% and then again by 10%.

Mathematics
2 answers:
Arturiano [62]3 years ago
4 0
A) 38*(1-20%)*(1-10%)=27.36
b)38*(1-30%)=26.6
c)Because in question one when you take off the 10% it is 10% of the already off price but when you take off 30% it is taking off from the original price
Ahat [919]3 years ago
4 0

Answer:

A- The final price of the shirt was $27.36.

B- If it were reduced by 30% from the original price, the price of the shirt would be $26.6.

C- There is a difference between both prices because in the first case, the discount is split, making a first discount on a larger basis, and the second on a smaller basis, already made the first discount.

In contrast, at the second price, the entire percentage is made on the major basis. Therefore, the discount is larger.

Step-by-step explanation:

A- The final price of the shirt is determined by the following calculation:

(38 x 0.8) x 0.9 = FINAL PRICE

38 is multiplied by 0.8 because the price was reduced by 20% (0.2 is the 20% of 1, that is, of a unit. Therefore, the remaining price would be that 0.8 or 80%)

Then, using the same logic, we have to multiply that result by 0.9 in order to get the final price.

Therefore:

(38 x 0.8) x 0.9 = 30.4 x 0.9 = 27.36

B- Here, we would have to multiply 38 x 0.7, which gives a result of 26.6

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The perimeter of a convex pentagon is 15 feet. What is the effect on its perimeter if each side is doubled?
Ad libitum [116K]

Answer:

If  each side of pentagon is doubled then its perimeter will also be doubles. The new perimeter is 30 feet.

Step-by-step explanation:

Let the length of all five sides of pentagon = <em>v, w, x, y</em>, and <em>z</em>.

Perimeter of pentagon = Sum of lengths of its all five sides = (<em>v + w + x + y + z</em>) = 15 feet

If each side of pentagon is doubles then,

New perimeter of pentagon = (2<em>v + </em>2<em>w + </em>2<em>x + </em>2<em>y + </em>2<em>z</em>)

= 2 (<em>v + w + x + y + z</em>)

= 2 (15)

= 30 feet

Therefore, if each side of pentagon is doubled then its perimeter will also be doubled.

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2 years ago
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Answer:

8

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8 0
3 years ago
Kayla wants to represent "18 divided by the sum of 3 and 3". She writes 8/(3x3) . Is Kayla's expression correct? Explain using c
Naya [18.7K]

no it is not correct. 18 divided by the sum of 3 and 3 equals 18 ÷ (3+3)

"sum of 3 and 3 " means 3+3 therefore 8/(3x3) = 8/9 and is completely different from the equation desired to be represented.

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22 51/100 as a decimal
Brrunno [24]
<span>22 51/100 as a decimal = 22.51
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HELPPPP<br> Solve for x using the figure to the right.
Maurinko [17]

Answer:

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