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olasank [31]
3 years ago
15

What is the value of f(x) when X=-3

Mathematics
1 answer:
Nata [24]3 years ago
3 0
Answer:

16

Step-by-step explanation:

f(x) = 2x^2 + 4x + 10

f(-3) = 2(-3)^2 + 4(-3) + 10

f(-3) = 2(9) + (-12) + 10

f(-3) = 18 + (-12) + 10

f(-3) = 16
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Algebra:please answer #1 and show work
Novay_Z [31]
So 12 mins to 600 feet
35 mins=1900 feet
find the slope which is change in top over change in bottom (aka slope) so to find do
(y1-y2)/(x1-x2)
we want, per minute, so put the time as x1 and x2
x1=12
y1=600
x2=35
y2=1900
subsitutte
(600-1900)/(12-35)=-1300/-23=56.5 per minute
the answe ris 56.5 feet per minute or the last answer
4 0
3 years ago
If two boxes of cereal and a jug of milk cost $8.50, and three boxes of cereal and two jugs of milk cost $14.00, how much does a
Citrus2011 [14]

Answer:

$3

Step-by-step explanation:

Let c represent the cost of a box of cereal and let m represent the cost of a jug of milk.

Create a system of equations:

2c + m = 8.5

3c + 2m = 14

Solve by elimination by multiplying the top equation by -2:

-4c - 2m = -17

3c + 2m = 14

Add them together and solve for c:

-c = -3

c = 3

So, a box of cereal costs $3

3 0
3 years ago
The regular price of an item is $65. The item is on sale with a discount of $8.What is the discount rate
amid [387]
The discount rate is the discount amount ($8) divided by the regular price, as a percentage.65/8=8.125 rounded to 8 so 8%.
6 0
3 years ago
Kelsey had $65 to spend on books. Each book cost $5.50, and there was a $7.50 fee for shipping. She let b equal the number of bo
GuDViN [60]

Answer:

Let the number of books she can purchase = b

The cost of each book is $5.5 with an extra shipping of $7.5

So, the total cost of the books she can purchase = 5.5b+7.5

Since, she had $65 to spend on the books.

The required inequality is 5.5b+7.5\leq 65.

So, according to the inequality above, we get,

The correct options are,

B. The inequality symbol is incorrect because she can spend up to and including $65.

C. The expression  5.5b+7.5 is correct because $5.50 per book is  5.5b and that is added to the shipping fee of $7.50 to determine the total purchase price.

5 0
3 years ago
Read 2 more answers
If the cost of a competing factor of production, such as a machine that also could do the job, rises. This would result in a shi
Harrizon [31]

Keep in mind that we're framing it based on what the first sentence says, which is "If the cost of a competing factor of production, such as a machine that also could do the job, rises".

So if the cost of getting a machine part, various parts, or the entire machine cost rises, then demand for the machine will go down. This will make employers seek out substitutes. In this case, those substitutes would be human labor. As employers demand for labor goes up, the wages will rise assuming the supply of workers is held constant. If the supply of workers increased, then you could argue the wages could go down. So that's why I'm assuming the supply is held in check.

6 0
3 years ago
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