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frez [133]
3 years ago
13

1. If f(x) = 3x² + x - 2, then f(-2) = 8 12 32 -16

Mathematics
2 answers:
leonid [27]3 years ago
8 0
The answer is A) 8 because x=-2
Vanyuwa [196]3 years ago
4 0

Answer: 8  

x

=

−

2

into  

f

(

x

)

f

(

−

2

)

=

(

3

×

(

−

2

)

2

)

−

(

−

2

)

×

×

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(

3

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4

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14

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A dinner cost $22 and a sales tax of $1.87 was added to the bill. How much would the sales tax be on a $66 dinner? What is the t
alexdok [17]

Answer:

The correct answer is the sales tax charged is $5.61 for $66 dinner at 8.5% tax rate.

Step-by-step explanation:

Cost of the dinner is $22. Tax levied on it is $1.87

Let x% is the rate of tax in the city.

Therefore, x% of 22 = 1.87

⇒ x = 1.87 × \frac{100}{22} = 8.5

Therefore 8.5% is the tax rate in the city on foods.

Now another dinner costs $66.

Tax levied on it at the same percentage is given by 8.5% of 66 = $5.61.

Thus $5.61 as sales tax would be charged for a $66 dinner.

8 0
3 years ago
The figure below is a regular pentagon. If mZBAE = 5x + 3, find the value of x.
Pepsi [2]

Answer:

x = 21

Step-by-step explanation:

For a pentagon, n = 5.

Each angle measures:

(n - 2)180/5 = (5 - 2)(180)/5 = 108

5x + 3 = 108

5x = 105

x = 21

5 0
3 years ago
Please I really need help ASAP I Will mark branlist promise
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Answer:

The mean is the average of a data set. You can find the mean by adding all of the numbers in the guven set of data and then divide by the total number of values in a set.

Step-by-step explanation:

for example:

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add all of these numbers together

the total would be 63

there are 7 numbers in the data set so you would divide 63 by 7

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