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kirza4 [7]
4 years ago
11

How to solve -1 3/4 + 2 1/4

Mathematics
1 answer:
Schach [20]4 years ago
8 0

Answer:

4

Step-by-step explanation:

because 3/4 +  1/4 =4/4 which is 1 and 1+2=4

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Explicit equation for 5,10,20,40
eduard

Answer:

see explanation

Step-by-step explanation:

These are the terms of a geometric sequence with n th term

a_{n} = a(r)^{n-1}

Where a is the first term and r the common ratio

r = \frac{10}{5} = \frac{20}{10} = \frac{40}{20} = 2

and a = 5, hence explicit equation is

a_{n} = 5(2)^{n-1}

3 0
3 years ago
Please help! Identify the rule! Will give brainiest!!
pychu [463]

Answer:

  y = 3x -1

Step-by-step explanation:

When x goes up 2 units from 5 to 7, y goes up 6 units, from 14 to 20. That's 3 times as many units as the change in x.

When x goes up 4 units from 7 to 11, you goes up 12 units, from 30 to 32. That's 3 times as many units as the change in x.

So, the slope of the function is constant at 3. If y were 3x exactly, the output numbers would be 15, 21, 33, each of which is 1 higher than the actual output. Hence the output must be one less than 3x, or ...

  y = 3x -1

3 0
4 years ago
20000 students took a standardized math test. The scores on the test are normally distributed, with a mean score of 85 and a sta
Tpy6a [65]

Answer: 2718

Step-by-step explanation:

Given: Mean score = 85

Standard deviation = 5

Let x be the score of a random student that follows normal distribution.

Then, the probability that a student scored between 90 and 95 will be

P(90< x < 95)\\\\=P(\dfrac{90-85}{5}

The number of students scored between 90 and 95 = 0.1359 x (Total students)

= 0.1359 (20000)

= 2718

Hence, The number of students scored between 90 and 95 = 2718

7 0
4 years ago
Please help me! I need the answer pretty fast...
lukranit [14]

Answer:

15 m

Step-by-step explanation:

you would use a sin equation because given the angle, the side you are resting to find is Opposite and the side you are given is the Hypotenuse

sin (32) = a/28

28 x sin (32) = a

14.83 = a

15 m = a when rounded

6 0
3 years ago
Simplify fully A) √9/25 B) √12/√3 C) √15/√3​
yaroslaw [1]

Step-by-step explanation:

A) 45

B) 6

C) 6.7082039326

8 0
3 years ago
Read 2 more answers
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