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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

)

×

×

=

(

3

×

4

)

+

2

=

12

+

2

=

14

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What 1/2 of 50? in a decimal form​
Whitepunk [10]

Answer:

25.0

Step-by-step explanation:

50/2 = 25

25.00

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3 years ago
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The product of two positive integers is 120. One number is 2 less than five times the other. Select the equation that can be use
svetlana [45]

lets assume one number is x

then 2nd number will be 5x-2

so product is 120

x (5x-2) = 120

5x^2 - 2x = 120

so answer is last option

8 0
3 years ago
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Please find Area of triangle
horrorfan [7]

Answer:

60

Step-by-step explanation:

Side A would end up being 15 and then to find the area you would use your formula 1/2 × base × height.

4 0
3 years ago
Using a stopwatch, Tyrone determines it takes him 58. 2 minutes to travel 30 miles to work. The stopwatch measures to hundredths
nekit [7.7K]

The most accurate determination for the number of 45.36 feet per second Tyrone traveled on his way to work.

Given that,

Using a stopwatch Tyrone determines it takes him 58.2 minutes to travel 30 miles to work the stopwatch measures to hundredths of a minute going by the accuracy of the stopwatch.

We have to determine,

Which is the most accurate determination for the number of feet per second Tyrone traveled on his way to work?

According to the question,

Tyrone determines it takes him 58.2 minutes to travel 30 miles to work,

the stopwatch measures to hundredths of a minute going by the accuracy of the stopwatch are determined by,

\rm  Speed = \dfrac{Distance}{Time}

Substitute the values in the equation,

\rm  Speed = \dfrac{Distance}{Time}\\\\Speed = \dfrac{30}{58.2}\\\\Speed = \dfrac{50}{97}  \ miles \ per \ minute

If 1 mile = 5,280 feet, then his speed is,

\rm  Speed = \dfrac{50}{97}  \ miles \ per \ minute\\\\  Speed = \dfrac{50}{97}  \times 5280 \\\\ Speed= \dfrac{26,400}{97}\ feet \ per \ minute\\

And 1 minute = 60 seconds, then his speed is,

\rm  Speed= \dfrac{26,400}{97}\ feet \ per \ minute\\\\ Speed= \dfrac{26,400}{97} \times \dfrac{1}{60} \\\\ Speed = \dfrac{4400}{97} \ feet \ per \ second \\\\ Speed = 45.36 \ feet \ per \ second

Hence, The most accurate determination for the number of 45.36 feet per second Tyrone traveled on his way to work.

For more details about Equation refer to the link given below.

brainly.com/question/971941

6 0
3 years ago
Help me plz and explain this a grade!!!
77julia77 [94]
Part 1: should be C. Because the question said 1.2 added to a number.

Part 2:16.8
4 0
3 years ago
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