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3 years ago

PLEASE HELP!! 25 POINTS!! REALLY!!!

Mathematics

2 answers:

Rus_ich [418]3 years ago

7 0

Answer:

48 degrees

Step-by-step explanation:

First you have to add 90 degrees by 42 since those are the two measurements that was given. Then we would get the answer 132. Next you have to subtract that by 180 and you would get 48. Hope this helps!!

Snezhnost [94]3 years ago

3 0

Reflex angle.
hope this helped!

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3. A toy car is traveling with a velocity of 4 m/s and has a mass of 1120g. What is the car's

adell [148]

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=
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5 0

3 years ago

-25 Points-

Elden [556K]

Answer:

(x+1)^2+(y+1)^2=13

Step-by-step explanation:

Equation of a circle: (x – h)^2 + (y – k)^2 = r^2

center: (-1, -1)

radius: sqrt(6^2+4^2)/2=sqrt(52)/2=2sqrt(13)/2=sqrt(13)

Substitute those values in to get

(x+1)^2+(y+1)^2=13

7 0

3 years ago

If students’ scores were normally distributed and the mean was 200 with a standard deviation of 40, then what is the probability

Sonja [21]

Answer:

84%

Step-by-step explanation:

The empirical rule tells you that 68% of the standard normal distribution is within 1 standard deviation of the mean. The distribution is symmetrical, so the amount in the lower tail is (1 -68%)/2 = 16%.

Since the number you're interested in, 240, is one standard deviation above the mean (200 +40), the percentage of interest is the sum of the area of the central part of the distribution along with the lower tail:

68% + 16% = 84%.

4 0

2 years ago

SLOVE THIS QUESTION

eduard

The answer is 1561 yuans and 27 jiao.

6 0

2 years ago

Round 19.98 to the nearest whole number

DiKsa [7]

19.98 rounded to the nearest whole number is 20.
In the number 19, 9 round the 1 to a 2 and the 9 becomes a 0 because of the 9 behind the decimal.
OR
You could think of a percent being 100. 98 is only 2 numbers away from 100 and thus you can round 19 up to 20.

Hope this helps! (:

4 0

2 years ago

Read 2 more answers