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Drupady [299]
3 years ago
12

If f(x)=2x^2+6,find the value of f(-3). Show all work

Mathematics
1 answer:
goblinko [34]3 years ago
8 0
Just plug -3 where x is into the equation 2x^2 + 6 and solve
f(-3) = 2(-3)^2 + 6
f(-3) = 2(9) + 6
f(-3) = 18 + 6
f(-3) = 24
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What is the sales tax for an item that costs $1400 and has a sales tax rate of 75% ?
dexar [7]
What this question is asking, without all the wording, is what is 75% of 1400. You can easily find this by multiplying 1400 by 0.75. This will be your sales tax.

1400*0.75

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Sales Tax: $1050

6 0
3 years ago
A ticket cost $4.80 the new ticket price will be 1.25 times the old price what will the new ticket be
PolarNik [594]
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7 0
2 years ago
Show your work on the question
AysviL [449]

Answer:

OPTION A: 3x - 1 = ± 5

Step-by-step explanation:

We have (3x - 1)² = 25

In OPTION A, Square root is taken on both sides.

This gives us: 3x - 1 = ± 5. And this is the logical follow - up of the previous step.

IN OPTION B: (a - b)² is wrongly expanded. So, this can not be the next step.

In OPTION C: The square root is taken only on the LHS but not on the RHS. So, it is eliminated.

In OPTION D: The square is expanded on LHS whereas on the RHS square root is taken. So, it is not correct and is eliminated.

Therefore, the correct option is A.

6 0
2 years ago
If the area of a circle is 25 pi, find the length of an arc with a central angle of 240? Any help is appreciated please.
almond37 [142]

Answer:

11.81pi

Step-by-step explanation:

r^2=25pi

r=8.86

length=2pi(8.86)(240/360)

=17.72pi(2/3)

=11.81pi

6 0
3 years ago
Anybody please help me over here
padilas [110]

Answer:

i agree

Step-by-step explanation:

because when you multply 3.141592654 times 5 you get 15.70796327.

8 0
3 years ago
Read 2 more answers
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