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muminat
3 years ago
7

Are these answers correct if not

Mathematics
1 answer:
iren2701 [21]3 years ago
8 0

1. <u>Correct</u>

2. <u>Incorrect</u>, answer is x ≤ -4.25   This is because the line goes to the left so it is less than or equal to.

3. <u>Incorrect</u>, the answer is the choice at the top, because it is greater than, it goes to the right and has a empty circle.

4. <u>Incorrect</u>, the answer is the choice at the bottom cuz it is greater than or equal to so the line goes to the right and the circle is filled in.

Hope that helps u!!

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PLEASE HELP FAST.
Misha Larkins [42]

Answer:

B

Step-by-step explanation:

this is because -300 × 4.5 = is simply -1350

6 0
3 years ago
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D, multiply the number and add the exponents.
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1. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.30 m?
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1. 30 Hz
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4 years ago
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Jose surveyed the length of TV commercials (in seconds). Find, to 3 decimal places, the experimental probability that a randomly
Lynna [10]

Answer:

≈0.487

Step-by-step explanation:

I think this is your full question right?

Jose surveyed the length of TV commercials (in seconds). Find, to 3 decimal places, the experimental probability that a randomly chosen TV commercial will last:

Length        Frequency

0-19                   17

20-39               38

40-59                19                    20 to 39 seconds.

60+ 20 to          4

Here is my anwer:

experimental probability = relative frequency = \frac{number of oserved occuerencies}{total number of oserved occuerencies}

Total frequencies = 17 + 38 +18 + 4 = 78

P(20 to 39s) = 38/78 ≈0.487  

6 0
3 years ago
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Note:  Please do not type "=" preceded or followed by "equals."  In this problem "equals" is OK and  "=" is an unnecesssary (duplication).
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