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soldier1979 [14.2K]
3 years ago
7

F(x)=x²-3x-2 then f(-1) is given by​

Mathematics
1 answer:
evablogger [386]3 years ago
8 0

Answer:

f(-1) = 2

Step-by-step explanation:

To evaluate this function at x = -1, replace "x" in the equation with (-1) (you should use the parentheses as indicated here).

f(x)=x²-3x-2 becomes

f(-1)=(-1)² - 3(-1) -2, or

f(-1) = 1 + 3 - 2, or

f(-1) = 2

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Jasmine had 20 dollars to spend on 3 gifts. She spent 9 1 4 dollars on gift A and 4 4 5 dollars on gift B. How much money did sh
svlad2 [7]

Answer:

5 2/6

Step-by-step explanation:

you have to mutiply

3 0
3 years ago
A pasta meal costs $8.95 at a local restaurant the cost to make a copycat version of the pasta meal at home is only $4.75 comple
coldgirl [10]

The absolute and relative cost difference in the restaurant and copycat meal are :

  • Copycat meal is $4.20 less than restaurant meal

  • Restaurant meal cost 1.88 times as much as copycat meal

  • Copycat meal is 53% of the cost of restaurant meal

Cost of restaurant meal = $8.95

Cost of copycat version = $4.75

1.)

Difference in cost of meal for both version :

Cost of restaurant meal - Cost of copycat version

($8.95 - $4.75) = $4.20.

The copycat meal is $4.20 less than the restaurant meal

2.)

Cost of restaurant meal ÷ Cost of copycat version

($8.95 ÷ $4.75) = 1.884 = 1.88(2 decimal places)

The restaurant meal cost 1.88 times as much as the copycat meal

3.)

Percentage = (8.95 - 4.75) × 100% = 53.07% = 53%(nearest whole number)

The copycat meal is 53% of the cost of restaurant meal

Therefore, the relative and absolute cost difference are $4.20, 1.88 times and 53%

Learn more :brainly.com/question/13218948

7 0
2 years ago
In a class, there are 20 girls and 10 boys. What is the percentage of the boys?​
gayaneshka [121]

Answer:

33.33%

Step-by-step explanation:

  • Number of boys=10
  • Number of girls=20
  • Total number of students=

Number of boys + Number of girls

10+20

30

  • Percentage of boys=

10/30×100%

33.33%

4 0
3 years ago
What is the difference (2x-3)-(1-1)?<br> O x+2<br> O x4<br> Help please!!
AVprozaik [17]

Answer:

I don't know if I understood the question correctly, but this is what I have...

Step-by-step explanation:

If the "x" is a variable:

(2x-3)-(1-1)=

2x-3

If th "x" is a multiplication sign:

(2x-3)-(1-1)=

-6-0=

-6

i hope this helps

7 0
3 years ago
Find the ending balance: Principal: $600<br> Interest Rate:5%<br> Time: 6 Years
leva [86]
If interest is 5 percent then you add 5 for every 100 so
6x5=30
then you add 30 to 600 so your answer is 630
7 0
3 years ago
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