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hram777 [196]
3 years ago
10

89. Practice

Mathematics
1 answer:
galina1969 [7]3 years ago
6 0

Answer:

Step-by-step explanation:

3/4 - 1/3 = 5/12

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Given the Quadrilateral pictured below. What is the<br> value of "X"?
sergiy2304 [10]

Answer:

Value of x is used to consider unknown value.

Step-by-step explanation:

Value of x is used to consider unknown value. The letter “x” is commonly used in algebra to indicate an unknown value. It is referred to as a “variable” or, in some cases, a “unknown.” In x + 2 = 7, x is a variable.

5 0
2 years ago
Why the systems must have the same solution?system(a)4x-5y=13.....3x+6y=11........system(b) 8x-10y=26.....x-11y=2.........AKA QU
Y_Kistochka [10]
When you add the equations in (a) you get 7x+y=24.

When you subtract the equations in (b) you also get 7x+y=24.

That means to solve both systems you can work with the same equation. However that is not enough. We must have two equivalent equations. We found only one.

Notice however that in the (b) we can take the first equation and divide every term by 2. When we do this we get 4x-5y=13. That’s the first equation in (a).

So both systems can be solved by working with the same two equations. These are 5x-5y=13 and 7x+y=24. And since we have two equations and two unknowns (the number of equations matches the number of variables) there is only one solution — one x and y that would make both systems true — solve both systems.

Basically we showed the systems are equivalent!
3 0
3 years ago
I need help on this asap, I'm giving 39 POINTS and mark BRAINLIEST the question is on the pic! thankss
shtirl [24]
Answer: I’m pretty sure it’s c also
3 0
3 years ago
The number of people entering a state park is a random variable X with a mean of 3 and a variance of 2. The admission to the par
vekshin1

Answer: $10.50

Step-by-step explanation:

Given the following :

Number of people entering the park = X

Mean number of people = 3

Fixed admission fee = $6

Additional fee per passenger = $1.50

Therefore, mean total paid by a car entering the park :

MEAN Total = Admission fee + (additional fee * mean number of people entering the park)

mean Total = $6 + ($1.50 * 3)

Mean total = $6 + $4.50 = $10.50

3 0
3 years ago
What is 20% of 90 with the work?
lianna [129]
What you want to do is convert 20% into a decimal. Then you multiply that by 90. So, if 20% was a decimal(In this case it is 0.2) you do 0.2*90 which equals 18. So the answer is 18.
8 0
4 years ago
Read 2 more answers
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