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TiliK225 [7]
3 years ago
8

Write an equivalent expression for (x - 11)(x + 9).

Mathematics
1 answer:
vodka [1.7K]3 years ago
7 0

Answer:

x²-2x-99

Step-by-step explanation:

(x-11)(x+9) - foil method

x times x = x squared

x times 9 = 9x

-11 times x = -11x

-11 times 9 = -99

x squared + 9x + 11x + -99

x squared-2x-99

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Pls help answer this, I will need an explanation as well-Thanks.
Mnenie [13.5K]
Hello!

First you have to find the probability of picking the right numbers

To do this you do the amount of favorable outcomes over the total amount of outcomes

There are 5 favorable numbers and 18 in total

This is a probability of 5/18

For the second number there of 4 favorable numbers and 17 in total since you already picked one

This is a probability of 4/ 17

For the third number there are 3 favorable numbers and 16 in total

This is a probability of 3/ 16

For the fourth number there are 2 favorable numbers and 15 in total

This is a probability of 2/ 15

For the fifth number there are 1 favorable numbers and 14 in total

This is a probability of 1/14

To get the answer you multiply all the probabilities together

5/18 * 4/17 * 3/16 * 2/15 * 1/14 = 1 / 8568

The answer is \frac{1}{8568}

Hope this helps!
7 0
3 years ago
Guys i need help please
klio [65]
I would help but I’m not sure how, please do not press that link or else it will track your address! <33
5 0
2 years ago
Answer the question please I'll give brainlyest
disa [49]

Answer:

125 miles

Step-by-step explanation:

Speed travelled every hour = 50 miles

Time travelled for - 2 1/2 hours = 2.5 hours

Distance = Speed * Time

50*2.5 = 125 miles

Hope this helps!

6 0
2 years ago
Read 2 more answers
a photographer shines a camera light at a particular painting forming an angle of 50 degrees with a camera platform at the light
umka2103 [35]

Answer:

The painting is 42.13 feet above  the platform

Step-by-step explanation:

Refer the attached figure .

A particular painting forming an angle of 50 degrees with a camera platform .

∠ABC = 50°

We are also given that the light is 55 feet from the wall where the painting hangs

i.e. AB = 55 feet.

Now we are required to find how high above the platform is the painting​. i.e. AC

So, we will use trigonometric ratio :

sin\theta = \frac{Perpendicular}{Hypotenuse}

sin50^{circ} = \frac{AC}{AB}

sin50^{circ} = \frac{AC}{55}

0.766*55 = AC

42.13= AC

Thus the painting is 42.13 feet above  the platform

8 0
3 years ago
When Sally was a Freshman, her soccer team had 13 players. By her senior year, Sally’s soccer team grew to 17. What is the perce
ra1l [238]

Answer:

about 31 percent

Step-by-step explanation:

5 0
3 years ago
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