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Marina CMI [18]
4 years ago
14

In a sale, the prices in a shop were all decreased by 20%. After the sale, they were all increased by 25%. What was the overall

effect on the shop prices? Explain how you know.
Mathematics
1 answer:
Andreas93 [3]4 years ago
5 0
Prices changed from 100% price to 80% price due to sale.
 
100% - 20% = 80%

THEN increased by 25% so 

80% + 25% = 105%

so the overall effect is that the price rose from the original (100%) to 105%
so a 5% increase
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There are 143 students, 6 teachers, and 8 chaperones going to the theater. To reserve their seats, they need to reserve entire r
Westkost [7]
There should atleast have atleast be 60 seats for all of those people because for this cause of reason it should be 60 put 60 as the answer
4 0
3 years ago
Which of the following is the conjugate of a complex number with 2 as the real part and 7 as the imaginary part?
MissTica

Answer:

2-7i is the correct option.

Step-by-step explanation:

We have been given the complex number real part 2 and imaginary part 7 it can be expressed as:

2+7i

And the conjugate means in the complex number is opposite sign of imaginary part that is in general:

a+ib will have conjugate a-ib

So, the conjugate of 2+7i is 2-7i

Hence, Option d is correct.

4 0
3 years ago
Read 2 more answers
Please Help! :) <br> Solve for X. The polygons in each pair are similar.
Diano4ka-milaya [45]

Answer:

x=2.65

Step-by-step explanation:

First, we need to figure out how much the length of the sides is changing between the equations. In this case it is changing by a factor of 2.5. Now we need to work backwards. First use this equation:

4x-5*2.5=14

This is because whatever the length of the side with x is, will be 14/2.5. So divide both sides by 2.5:

4x-5=5.6

Next, add 5 to both sides:

4x=10.6

Then divide both sides by 4:

x=2.65

8 0
3 years ago
Divide 9x^2-6x+2 by (-1+3x)
natali 33 [55]

Answer:

A. 3x - 1 + [3x - 1]⁻¹

Step-by-step explanation:

Use Polynomial Long Division to arrive at this answer.

**[3x - 1]⁻¹ = 1\[3x - 1]

3 0
3 years ago
Write a simplified expression for the length of AC.
Elena L [17]

Answer:

see below

Step-by-step explanation:

Using the segment addition postulate

AB + BC = AC

x+2 + 7x-3 = AC

Combine like terms

8x -1 = AC

Using the segment addition postulate

PQ + QR = PR

8y+5 + QR = 13y+25

Subtract 8y from each side

5 + QR = 13y-8y+25

5 + QR = 5y+25

Subtract 5 from each side

QR = 5y+25-5

QR = 5y+20

3 0
3 years ago
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