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lesantik [10]
4 years ago
12

Hey:) please help me on this one: Evaluate the function f(x) = 0.4x^2 - 3x - 8 for the value x = -2​

Mathematics
1 answer:
Ksivusya [100]4 years ago
8 0

Answer:

Step-by-step explanation:

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Jamie and Stella are saving money to sign up for a school trip to Washington, D.C. In order to sign up for the trip, they must p
Andrew [12]

Answer:

Jamie: His inequality would look like this:  25x >= 600

Stella: Her inequality would look like this: 15y >= 600

Her limitations would be listed as: y=40

Yep. Stella has plenty of money by baking 40 pies; $600.

We can back that up by breaking this down. So. We know that it cost $600 to pay upfront and Jamie makes $25 per car he washes. Stella would make $15 for every pie she baked. So simply, let x represent the number of cars Jamie washes. Let y represent the number of pies Stella makes. Easy.

Since the cost for washing one car is $25

Now, in order to sign up for the trip, money obtained from car washing must be greater than or equal to $600. We know that. Now, lets see their profit margins.

Since the cost for making one pie is $15

Therefore, the cost of making y pies is 15y.

Now, in order to sign up for the trip, money obtained from pie making must be greater than or equal to $600 so with that being the case... 15y>=600

We all know the maximum number of pies that Stella can make is 40. So, the value of can't exceed 40 and must be less than or equal to 40. So.... y<=40

Bam.

In order to sign up for the trip, Stella's total earning must be at least $600. So, is the minimum condition for signing up for the trip. Now, let us solve the above equation for . So our end project looks like this: 15y = 600 y = 600/15 = 40

The minimum number of pies required for signing up for the trip is 40 and luckily that's the maximum supply Stella has for pies. Therefore, she can sign up for the trip by making all the 40 pies and earning a total of 600 dollars.

Step-by-step explanation:

7 0
3 years ago
1/3x 6,000<br> helppp barely learning these
Ipatiy [6.2K]

Answer:

2000

Step-by-step explanation:

6000 / 3 = 2000

3 0
3 years ago
Read 2 more answers
Use long division to determine the decimal equivalent of 5/9<br> A 0.3<br> B 04<br> C 0.5<br> D 0.6
Mashutka [201]

Answer:

C) 0.55...

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
MATH - 9/B=21/14 WHAT IS B
Mars2501 [29]

Answer:

b=6

Step-by-step explanation:

9/b=21/14

9/b=3/2

9=3/2b

9=3b/2

9×2=3b

18=3b

18/3=b

6=b

b=6

6 0
3 years ago
Read 2 more answers
If one container holds 1 an 7/8 quarts of water and a second container holds 5 3/4 quarts of water.How many more quarts of water
iren [92.7K]
It holds 3.875 because 1 7/8 minus 5 3/4 is 3.875, or 3 7/8
7 0
3 years ago
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