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bogdanovich [222]
3 years ago
9

If f(x)= 2x2+1 what is f(x) when x=3?

Mathematics
1 answer:
omeli [17]3 years ago
5 0
The correct answer is 13
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Jill, Meg and Beth are sister's. Jill is 2 years younger than Meg. Beth is half as old as Meg. Let m represent Meg's age. Write
pshichka [43]

Answer:

Two other algebraic expressions based on this situation are:

J = m-2

B = \frac{m}{2}

Step-by-step explanation:

Let m represent Meg's age.

Jill is 2 years younger than Meg.

Let J represents Jill's age

Jill's age J = m-2

Beth is half as old as Meg

Let B represents Beth's age

Beth's ageB = \frac{m}{2}

So,  two other algebraic expressions based on this situation are:

J = m-2

B = \frac{m}{2}

4 0
3 years ago
What is the value of the product (4 – 2i)(6 + 2i)? 20 – 4i 20 + 16i 28 + 16i 28 – 4i
Darya [45]

(4 – 2i)(6 + 2i)

FOIL

First : 4*6 =24

Outer: 4*2i = 8i

Inner: -2i* 6 = -12i

Last: -2i*2i = -4i^2 =-4(-1) =4

Add together

24+8i-12i+4

28-4i

Answer: 28-4i

8 0
3 years ago
Read 2 more answers
A chicken weighs t lbs. It needs to be cooked for 20 minutes per lb plus an extra 15 minutes. What is the total cooking time? Is
Nostrana [21]

Answer:

Total cooking time = 20t + 15

The expression 15t + 20 is wrong.

Step-by-step explanation:

weight of chicken = t lbs

cook time per lb = 20 minutes

This means that:

1 lb weight requires a cooking time of 20 minutes

1 lb = 20 minutes

∴ t lbs = 20 × t = 20t minutes.

We were also told that each chicken required an extra cooking time of 15 minutes, in addition to the total cooking time due to the weight. Therefore, the total cooking time is calculated thus:

Total cooking time = cooking time due to weight + 15 minutes

Total cooking time = 20t + 15

Hence the expression 15t + 20 is wrong, due to the explanation given above.

8 0
3 years ago
Which number is a prime number 2 or 4or<br> 14 or 24
valina [46]
2 is a prime number for 14 and 24

Hope this helps!!
3 0
3 years ago
Read 2 more answers
Another name for an if-then statement is a ____. Every conditional has two parts. The part following if is the ____ , and the pa
grigory [225]
1. 
C) conditional; hypothesis; conclusion.
2. 
A) If a triangle has three sides, than all triangles have three sides.
4 0
3 years ago
Read 2 more answers
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