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worty [1.4K]
4 years ago
15

Help will mark brainliest

Mathematics
1 answer:
vlada-n [284]4 years ago
8 0

Answer:

Step 1 : Plug values into the quadratic formula

x = -(-5) +/- √ (-5)^2 - (4)(2)(-3) / (2)(2)

Step 2 : Solve

x = 5 +/- √ 25 + 24 / 4

x = 5 +/- √ 49 / 4

x = 5 +/- 7 / 4

x1 = 5 - 7 / 4  AND x2 = 5 + 7 /4

x1 = -1/2 OR - 0.5    

x2 = 3

Hope this helps!!

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Suppose that there are 20 numbers in a data set and that they are all different. How many of the values in this data set are bet
antoniya [11.8K]

Answer:

10 Values

Step-by-step explanation:

We would use a set of data for illustration

Given the set of numbers:

1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20

Since we have an even number of data, the median is in between 10 and 11.

(1,2,3,4,5,6,7,8,9,10),(11,12,13,14,15,16,17,18,19,20)

Lower Half: (1,2,3,4,5,6,7,8,9,10)

  • The median of the lower half is in between 5 and 6. So Q_1 is in between 5 and 6.

Upper Half:(11,12,13,14,15,16,17,18,19,20)

  • The median of the upper half is in between 15 and 16. So Q_3 is in between 15 and 16.

Therefore, we have the [position of the first and third quartiles as:

1,2,3,4,5,Q_1,6,7,8,9,10,11,12,13,14,15,Q_3,16,17,18,19,20

There are 10 values in between the first and third quartiles.

7 0
3 years ago
52.5 of what is 8.82
pogonyaev
8.82 / 52.5
0.168

so 16.8% of 52.5 is 8.82
6 0
3 years ago
The value of the x-intercept for the graph of 4x-5y=40 is<br> 1) 10<br> 2) 4/5<br> 3) -4/5<br> 4) -8
borishaifa [10]

Answer:

I took it and got this question anf got it correct! Hope i helped!

Step-by-step explanation:

- 8

7 0
3 years ago
Read 2 more answers
What is 789+765-98-332-3
arsen [322]
That would be 1,121.
8 0
3 years ago
Write the equation of the line passing through (−1, 0) and (0, −3).
e-lub [12.9K]

Answer:

C

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 1, 0) and (x₂, y₂ ) = (0, - 3)

m = \frac{-3-0}{0+1} = - 3

note the line crosses the y- axis at (0, - 3) ⇒ c = - 3

y = - 3x - 3 ← in slope- intercept form

Add 3x to both sides

3x + y = - 3 ← in standard form → C

8 0
3 years ago
Read 2 more answers
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