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zubka84 [21]
3 years ago
12

Help me with these 2 questions please

Mathematics
1 answer:
pishuonlain [190]3 years ago
4 0

Answer:

I believe for the second one it's B, then for the third one it's D

Step-by-step explanation:

Oh also be careful w ur lunch # showing

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3. The temperature of a swimming pool
Anastaziya [24]

Answer:

81 F

Step-by-step explanation:

Hours | Temp.

   0     | 75F

   1      | 77F

   2     | 79F

   3     | 81F

4 0
3 years ago
Can someone please help me with problem number 13. 14 ASAP
Tanya [424]

Answer:

For 13: 13/30

Step-by-step explanation:

First simplify!

9x - 25 + 21x - 35 + 12 = 0

then simplify some more

9x + 21x = 30x

(-25) + (-35) + 21 + 12 = -13

30x - 13 = 0

now add 13 to both sides, 13 and -13 cancel each other out and it becomes

30x = 13

then you divide by 30 to get x by itself. 30 cancels itself out and you are left with 13/30 which doesn't simplify so that shod be your answer! I couldn't figure out 14 but I hope this helps!!!

4 0
3 years ago
The batteries of 150 MP3 players were tested to see if they were
Bas_tet [7]

Answer:

The estimate of the population proportion of defective battery is 0.1333.

Step-by-step explanation:

Estimate of the population proportion of defective battery:

The estimate of the population proportion is the sample proportion.

Sample proportion:

Number of desired outcomes divided by the number of total outcomes.

Proportion of defective battery:

20 defective out of 150. Thus:

p = \frac{20}{150} = 0.1333

The estimate of the population proportion of defective battery is 0.1333.

7 0
4 years ago
Gordon types 1,922 words in 31 minutes. Find the unit rate
Kisachek [45]

Answer:

64.2580645161 words in a minute

Step-by-step explanation:

Hope that helps!

8 0
3 years ago
Read 2 more answers
Max points <br> Solve for x 2/5x=6/5
Sati [7]
Answer:
x=3 because you have to multiply by the reciprocal on both sides which leaves you with 30/10 and simplified it is 3
7 0
3 years ago
Read 2 more answers
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