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Anettt [7]
3 years ago
8

A student subtracted 9 from a number and then divided the result by 3. Her answer was 43.

Mathematics
1 answer:
elixir [45]3 years ago
8 0

Answer:

138

Step-by-step explanation:

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The sum of two numbers is 98. Their difference is 22. Write a system of equations that describes this situation. Solve by elimin
erik [133]

Answer:

x + y = 98

x - y = 22

2x = 120

x = 60

x + 60 = 98

x = 38

the answer is b

6 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
3 years ago
What is the answer to 5/8 + 1/3?
Gekata [30.6K]

Answer:

23/24

Step-by-step explanation:

8 0
3 years ago
Please look at picture attached! i will mark you brainlyest if right!
katrin2010 [14]
Amp is the number in front of sine so its 1/2 aka D :)
8 0
2 years ago
Nishi invests £3200 at 6% interest per year. Work out how much she will have altogether after: 2 years ​
artcher [175]

SI = P×R×T/100

(3200×6×2)/100

= 384

Now 3200 + 384

= Euro 3584

4 0
2 years ago
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