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Vanyuwa [196]
3 years ago
14

How to solve -x^2-2x=5?

Mathematics
1 answer:
anastassius [24]3 years ago
6 0
-x^2 - 2x - 5=0
-(x^2 + 2x + 1) -4=0
(x +1)^2= -4
=> Impossible. There is no x
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Why is division not commutative
Kamila [148]
Division CANNOT be commutative, here is why

lets say the problem is 24÷4

it is obviously  6

but when you flip 24÷4, you get 4÷24

and... 4÷24 is 0.16666666

6 and 0.1666 is totally different :p
3 0
3 years ago
1) Find (10) in the sequence given by b(n) = -5+9(n - 1).<br> b(10) =
S_A_V [24]

Answer:

b(10) = 76

Step-by-step explanation:

To find b(10) substitute n = 10 into the formula

b(10) = - 5 + 9(10 - 1) = - 5 + 9(9) = - 5 + 81 = 76

8 0
4 years ago
Are the two given triangles similar? Show your work to support your answer.<br> Helpppp please
Romashka [77]

Answer:

no

Step-by-step explanation:

1 is obtuse one is acute

8 0
3 years ago
What is the TOTAL area of polygon<br><br><br> The total area is__________square centimeters.
Degger [83]

Answer:

66

Step-by-step explanation:

Find the area of the rectangle, then add up the area of the triangle.

The area of the rectangle

= 5 × 12

= 60 cm²

The <u>base</u> of the triangle

= 12 - 9

= 3 cm

The <u>height</u> of the triangle

= 9 - 5

= 4 cm

The area of the triangle

= (3 × 4) ÷ 2

= 6 cm²

The total area of the figure

= 60 + 6

= <u>66 cm²</u>

6 0
3 years ago
The casino game, roulette, allows the gambler to bet on the probability of a ball, which spins in the roulette wheel, landing on
vodomira [7]

The probability of winning when betting on two lines that touch each other on the table is 6/38

<h3>How to determine the probability?</h3>

The sample size is given as:

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Range = 6

So, the probability is calculated as:

P = Range/n

This gives

P = 6/38

Hence, the probability of winning is 6/38

Read more about probability at:

brainly.com/question/251701

#SPJ4

7 0
2 years ago
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