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Answer:
D is our choice
Step-by-step explanation:
For the money part we get
4x+6y ≤55
For the gallons we get
x+y ≥9
I will use elimination so multiply the second equation by -4
Remember when multiplying by a negative, the inequality flips
-4x -4y ≤-36
Add the first equation and the last equation together to eliminate x
4x+6y ≤55
-4x -4y ≤-36
----------------------
2y ≤19
Divide by 2
2y/2 ≤19/2
y ≤9.5
Now we need to find x
x+y ≥9
Substitute y in
x+9.5 ≥9
Subtract 9.5 from each side
x+9.5-9.5 ≥9-9.5
x ≥-.5
Also 4x+6y ≤55
Let y=0
4x ≤55
Divide by 4
4x/4 ≤55/4
x ≤13.76
Two things
We cannot buy parts of a gallon so y ≤9, x<13
and x and y cannot be negative ( no selling drinks we are buying them) so x ≥0 ,y ≤0
0 ≤y≤9
0 ≤x≤13
Which points fits these requirements
A and C have y >9 so they are eliminated
B has y as negative so it is eliminated
D is our choice
Answer:
e. two-sample z-test for two proportions
Step-by-step explanation:
He has two machines, which have a proportion of defective motherboards. He want to compare this two proportions.
He takes two samples, one for each machine, and calculate the proportion in order to statistically test if there are significant difference between the proportions.
Then, this is a two-sample z-test for two proportions
Answer:
1) At $40 per hive, the almond grower spent $6,800
At $60 per hive, the almond grower spent $10,200
2) 36,000 bees died, 4,000 lived to pollinate.
Step-by-step explanation:
1) 170x40= 6,800
170x60=10,200
2) 10% of 40,000 is 4,000
40,000-4,000=36,000
90%=36,000 10%=4,000
The kite is flying at the height of 94 5/2 feet.
Combining objects and counting them as one big group is done through addition. In arithmetic, addition is the process of adding two or more integers together. Addends are the numbers that are added, while the total refers to the outcome of the operation.
= 9.75 +84 2/3 { 9+0.75 = 9.75 84 2/3}
= 9 + 0.75 +84 2/3 { a+b+c+d = a+c+b+d}
= 9 + 84 + 3/4 + 2/3
=93 + 3*3 / 4*3 + 4*2 / 4*3
= 93 + 9/12 + 8/12
= 93 + 17/12
= 93 + (1 + 5/12)
= 94 + 5/12
=94 5/12 feet
{kite height = (post height + the height of the kite above the post)
To learn more about addition from given link
brainly.com/question/24536701
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