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bearhunter [10]
3 years ago
12

Check all that apply. x2 + 4x - 9 = 5x + 3

Mathematics
1 answer:
kakasveta [241]3 years ago
8 0

Answer:

The solution set is (-3, 4).

Step-by-step explanation:

x2 + 4x - 9 = 5x + 3

x^2 + 4x - 5x - 9 - 3 = 0

x^2 -x - 12 = 0

(x - 4)(x + 3) = 0

x = -3, 4.

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A commuter airline makes lattes in the galley and sells them to passengers. A regular latte contains a shot of espresso, 1 cup o
Alik [6]

Answer:

To maximize profit, the amount of each type of coffees made are;

The number of regular latte made = 52 cups

The number of low-fat latte made = 48 cups

Step-by-step explanation:

The given parameters are;

The number of espresso in a regular latte = 1 shot

The number of cups of 2% milk in regular latte = 1 cup

The amount of whipped cream in a regular latte = 0.5 cup

The number of cups of skim milk in the low-fat latte = 1.25 cup

The number of espresso in a low-fat latte = 1 shot

The amount of whipped cream in a low-fat latte = 0 cup

The number of cups of espresso in the journey = 100 shots

The number of cups of skim milk in the journey = 60 cups

The number of cups of 2% milk in the journey = 60 cups

The amount of profit the airline makes on each regular latte = $1.58

The amount of profit the airline makes on each low-fat latte = $1.65

Let 'x' represent the number regular lattes made and let 'y' represent the number low-fat lattes made, we have;

x ≤ 30/0.5 = 60

x ≤ 60

y ≤ 60

y ≤ 60/1.25 = 48

∴ y ≤ 48

x + y ≤ 100

Therefore, the given that more profit is made from the sale of low-fat latte than for regular latte, the maximum number of low-fat latte should be made

Therefore, the number of low-fat latte made, y = 48

Therefore, the number of regular latte made, x ≤ 100 - 48 = 52

For maximum profit, the maximum number of low-fat latte, 'x', should be made

Therefore, x = 52

The ideal mix of regular and low-fat lattes to maximize profit is 52 cups of regular latte and 48 cups of low-fat latte

5 0
2 years ago
15 = 2c + 7<br> Solve for c
DaniilM [7]

Step-by-step explanation:

15=2c+7

15-7=2c

8=2c

8/2=c

4=c

c=4

5 0
3 years ago
Read 2 more answers
Suppose that A is the set of sophomores at your school and B is the set of students in discrete mathematics at your school. Expr
Anarel [89]

Answer:

Suppose that A is the set of sophomores at your school and B is the set of students in discrete mathematics at your school.

a) It is the intersection A ∩ B

b) This is the difference A − B.

c) It is the union A ∪ B.

                                   ---    ---

d) It can be shown as A ∪ B. (bar over A and B both)

5 0
3 years ago
when all the kids who tried out for soccer were divided into teams of 15 players, there were exactly eight teams. how many kids
seropon [69]
You would multiply 15 ×8= 120 kids tried out
5 0
3 years ago
How do I change 5/11 to a decimal,please explain
GalinKa [24]

Step-by-step explanation:

5/11 as a decimal is 0.45454545454545

3 0
3 years ago
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