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Degger [83]
3 years ago
12

Find the discriminat 2x^2 + 8x - 9 = 0

Mathematics
1 answer:
alexandr402 [8]3 years ago
3 0

Answer:

2x^2 + 8x - 9 = 0

2x^2 + 8x = 9

2x^2 + x = 9/8

x^2 + x = 9/8×2

x^2 + x = 9/16

2x = √9/16

x = √9/32

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What is the factorization of 84
Vladimir79 [104]

Answer:

2×2×3×7

Step-by-step explanation:

84 is even, so divisible by 2. 84 = 2×42

42 is even, so divisible by 2. 82 = 2×2×21

21 has a sum of digits of 3, so is divisible by 3. 84 = 2×2×3×7

4 0
3 years ago
Two angles are supplementary. One angle has a measure that is five less than four times the other. What is the measure of the la
iren [92.7K]

Answer:

The larger angle is 143

Step-by-step explanation:

x + y = 180 (This is the meaning of supplementary. Two angles make up 180 degrees)

4x - 5 = y

x + (4x - 5) = 180            Remove the brackets.

x + 4x - 5 = 180

5x - 5 =  180                  Add 5 to both sides

5x - 5 +5 = 180 + 5       Combine

5x = 185                        Divide by 5

5x/5=185/5

x = 37

y = 4*37 - 5

y = 148 - 5

y = 143

4 0
3 years ago
If each interior angle of a regular polygon measures 144 degrees, how many sides does the polygon have?
LuckyWell [14K]
180(n-2)=n*144 in our casesolving for n we obtain:36n = 360n=10 sidesCHECK!!!!!!!!!!!!!!!!!!!
4 0
3 years ago
(5 x 6) - (5 x 1)= 5 x
levacccp [35]

Answer:

x=0

Step-by-step explanation:

(5 x 6) - (5 x 1)= 5 x

5x X 6-5x X 1=5x

30x-5 X 1X x=5x

30x-5x=5x

25x=5x

25x-5x=5x-5x

20x=0

20X/20 = 0/20

x=0

5 0
3 years ago
cylinder with height 9 inches and radius is filled with water, it can fill a certain pitcher. How many of these pitchers can a c
larisa [96]

Answer:

4

Step-by-step explanation:

The 1st cylinder used to fill the pitcher has:

height:

h = 9 in

radius:

r = r

The volume of a cylinder is given by:

V=\pi r^2 h

Therefore, the volume of the 1st cylinder is

V=\pi r^2 9=9\pi r^2

We are told that the water inside this cylinder can fill a certain pitcher, so this is also the volume of the pitcher.

Then, we have a second cylinder, which has height

h = 9 in

and radius

r' = 2r

So the volume of this cylinder is

V'=\pi r'^2 h = \pi (2r)^2 9 =9\pi (4r^2)=36\pi r^2

This means that the number of pitchers that can be filled by this 2nd cylinder is

n=\frac{V'}{V}=\frac{36\pi r^2}{9\pi r^2}=4

8 0
4 years ago
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