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ipn [44]
3 years ago
10

Given, f(x)=x²-2x+3, find f(-2)

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
3 0

Answer:

11

Step-by-step explanation:

(-2)^2-2(-2)+3

(-2)(-2)+4+3

4+4+3

8+3

11

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What is the midpoint of the line segment graphed below?
FinnZ [79.3K]

Answer:

(3.5, -4.5)  or option D

Step-by-step explanation:

x) (6 + 1) / 2 = 3.5

y) (-1 + (-8)) / 2 = -4.5

3 0
3 years ago
Juan is buying soda for a class party. he can go to the vending machine and buy 12-oz cans for $0.60 each, to the corner store a
rodikova [14]

Answer:

Best deal is corner store

Step-by-step explanation:

LCM is 480 oz

480 oz of the Vending Machine would be £24 (0.60 x (480/12))

480 oz of the Corner Store would be £22.80 (0.95 x (480/20))

480 oz of Grocery store would be £23.25 (1.55 x (480/32))

4 0
3 years ago
What is the answer for pie in math
salantis [7]

Answer:

first how do I change my name

5 0
3 years ago
Read 2 more answers
Cna i get some help with dis plz
Tomtit [17]

Let b_1,b_2,\ldots,b_{20} be the 20 marks of the boys, and g_1,g_2,\ldots,g_{10} be the 10 marks of the girls.

We know that the global mean was 70, meaning that

\dfrac{b_1+b_2+\ldots+b_{20}+g_1+g_2+\ldots+g_{10}}{30}=70

Multiplying both sides by 30 we deduce that the sum of the scores of the whole classroom is

b_1+b_2+\ldots+b_{20}+g_1+g_2+\ldots+g_{10}=2100

By the same logic, we work with the marks of the boys alone: we know the average:

\dfrac{b_1+b_2+\ldots+b_{20}}{20}=62

And we deduce the sum of the marks for the boys:

b_1+b_2+\ldots+b_{20}=1240

Which implies that the sum of the marks of the girls is 2100-1240=860

And finally, the mean for the girls alone is

\dfrac{860}{10}=86

6 0
3 years ago
Factor the trinomial x^2 - 7x + 10
Valentin [98]

Answer:

(x-5) (x-2)

Step-by-step explanation:

x^2 (-2x-5x) +10

basically you will write the equation down and then to double check multiply the x and then the -5 into (x-2). this can be repetitive if you get it wrong so try to do numbers that make sense.

7 0
3 years ago
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