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faltersainse [42]
3 years ago
9

Please help trying to get my grade up​

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
3 0
1. C (x+8)^2
2. D y=6^x
3. D t/2.35 ; 2.13 ft.
4. A (7h^2-2h)/2; 672 cm^2
5. A 4.50 h ; $7.88
For one and two you just have to plug in the numbers into the equation to see what works.
Three four and five you have to read the problems and come up with an equation to get your answer. Please comment if you need to see the work!
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Elaine travelled 354.9 miles on her last tank of gas. When she stopped to get gas, her car required 9.1 gallons of gas. How many
nikdorinn [45]

354.9/9.1=39

So. elaine averaged 39 miles per gallon

5 0
3 years ago
a system of two linear equations has infinitely many solutions. one of the equations in the system is y-3x=-3.write an equation
Troyanec [42]
The other equation could be 

2y - 6x = -6

Solving:-

y - 3x = -3..........(1)
2y - 6x = -6........(2)
multiplyng the first equation by 2 gives
2y - 6x = -6

so equations (1) and (2) are the same equation
If we graph them they will be the same line 
Every point on that line will be a solution.

So there are infinitely many solutions
8 0
3 years ago
what is the rule for solving proportions? A. The sum of the means is the product of the extremes. B. The product of the means is
Zanzabum
The rule is that :
B. The product of the means is equal to the product of the extremes
8 0
3 years ago
There are 320 apples in a bag.James receives 45% of the apples, his brother receives 30% of the apples and his sister, Eden rece
Sav [38]

Answer:

20 apples

Step-by-step explanation:

First, there are 320 apples that need to be split up between the siblings. We are first working with percentages. The total amount will be 100 percent. James has 45% and his brother has 30%. 45% + 30% is 75%. We subtract that from 100% and get 25%. That means that Eden gets 25% of 320 apple's. That's 320 * .25 or 320 / 4. That is 80 apples for Eden. If she gives 75% of her 80 apples, that means she gives 60 apples away. 80*.75 = 60. Eden would then only have 20 apples left. 80-60=20.

3 0
3 years ago
"if n balls are distributed randomly into k urns, what is the probability that the last urn contains j balls?"
seraphim [82]

The answer relies on whether the balls are different or not. If they are not, which is almost certainly what is intended.


If they are, the perceptive is a bit different. Your expression gives the likelihood that a particular set of j balls goes into the last urn and the other n−j balls into the other urns. But there are (nj) different possible sets of j balls, and each of them the same probability of being the last insides of the last urn, so the total probability of completing up with exactly j balls in the last urn is if the balls are different.


See attached file for the answer.

3 0
3 years ago
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