<span>You need to set up 2 equations for this, a system to be exact
let x represent the cheaper phone and y represent the upgraded phone
for store costs you will have
5x+25y=200
for selling prices you will have 30x+100y=900
set these two equations together
5x+25y=200
30x+100y=900
multiply the first one by -4 and add them
-20x-100y=-800
30x+100y=900
10x=100
x=10
10 cheaper phones, plug into any equation again
5(10)+25(y)=200
y=6<<<6 upgraded phones</span>
Using BEDMAS, it would be brackets first, so anything Inside a set of brackets would be solved first, and would follow the same rule. Once the brackets have been solved, next would be the exponents. Since your brackets have been solved you can expand with the exponents. After exponents, would be anything that has to be divided or multiplied. These two operations are interchangeable based on what is more convenient or beneficial to do first. And lastly, addition and subtraction, which once again are interchangeable operations
Answer:
2.12 miles
Step-by-step explanation:
Answer:
y = ± 12
Step-by-step explanation:
Given
y : 24 = 6 : y, or in fraction form
=
( cross- multiply )
y² = 144 ( take the square root of both sides )
y = ±
= ± 12
The image is missing, we have attached the image.
Answer:
The of getting an even number in first and an odd number second is
.
Step-by-step explanation:
Given,
Total number of outcomes = 36
We have to find the probability of rolling an even number first and an odd number second.
Solution,
Firstly we will find out the possible outcomes;

So the total number of outcomes = 9
Now according to the formula of probability, which is;

Now on putting the values, we get;
P(of getting an even number in first and an odd number second)=
Hence The of getting an even number in first and an odd number second is
.