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sveta [45]
3 years ago
7

Four more than a number and a no more than twelve

Mathematics
1 answer:
kolezko [41]3 years ago
6 0

Answer: is it 8

Step-by-step explanation: i just guess the middle number

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An angle measures 62° less than the measure of its complementary angle. What is the measure of each angle? (i need two answers p
postnew [5]

Answer:

28° 62°

Step-by-step explanation:

Hope this helps :)

8 0
3 years ago
Julio says, "If you subtract 19 from my number and multiply the difference by - 7, the result is - 28." What is Julio's number?
ra1l [238]

Answer:

23

Step-by-step explanation:

Basically I did it backwards & opposites:

-28 divided by -7 = 4

4 + 19 = 23

I checked btw and it worked.

4 0
2 years ago
The average fuel efficiency of U.S. light vehicles for 2005 was 21 mpg. If the standard deviation of the population was 2.9 and
statuscvo [17]

Answer:

1) The probability that the mean mpg for a random sample of 25 light vehicles is 0.042341.

2) between 20 and 25 --> 21-25/2.9 = -1.38

Step-by-step explanation:

Problem #1:

  • Using the z-score formula, z = (x-μ)/σ/n, where x is the raw score = 20 mpg,μ is the population mean = 21 mpg , σ is the population standard deviation = 2.9, n = random number of samples.
<h3><u>X < 20</u></h3>
  • = z = 20 - 21/2.9/√25
  • = z = -1/2.9/5
  • = z = -1.72414
<h2><u><em>Now</em></u></h2>

<em>P-value from Z-Table:</em>

<h3><u>P(x<20) = 0.042341</u></h3>

Problem #2:

<h3>21-25/2.9 = -1.38</h3>
6 0
2 years ago
How do you do this please help me
aleksandr82 [10.1K]
Use PEMDAS

first 36-4 = 32
7^2 = 49
(32/16) - 49 is your answer -47
7 0
3 years ago
Then number of pandas in the world is decreauing at a rate of
xxMikexx [17]

Answer:

2998 Panda's will be left in 4 years.

Step-by-step explanation:

0.5 x 4 =2

3000-2=2998

7 0
3 years ago
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