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butalik [34]
3 years ago
12

Please explain if possible

Mathematics
1 answer:
JulijaS [17]3 years ago
7 0

Answer:

-5x^2 - 25x + 3 (Answer B)

Step-by-step explanation:

Carry out the indicated multiplication:

2x^2 - 12x - 7x^2 - 13x + 3

Now rearrange these terms in descending order by powers of x:

2x^2 - 7x^2 - 12x - 13x + 3

Combining like terms, we get:

-5x^2 - 25x + 3 (Answer B)

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Angela practices piano for 5 hours on Sundays amd for 3 hours on all other days of the week. How many hours doea Angela practice
Kitty [74]

Answer:8 x 365=2920

Step-by-step explanation:

First, you add 5 + 3 which equals 8. Then there is 365 days in a year so you would multiply 8 times 365 which equals 2920.

Pretty sure this is right, hope it helps.

7 0
2 years ago
There are 26 prize tickets in a bowl,labeled A to Z. What is the probability that a prize ticket with a vowel will be chosen,not
labwork [276]

Answer:

3.1%, dependent event

Step-by-step explanation:

We have that vowel are 5, it is from A, E, I, O, U therefore the probability of drawing a vowel is:

5/26

since there are a total of 26 options to choose from. Then, when selecting that, we are left with 25 options and 4 vowels, therefore the probability would be:

4/25

Therefore the final probability is:

5/26 * (4/25) = 0.031

In other words, selecting a vowel and then another (without replacement) the probability is 3.1%

The events are dependent, since the first event affects the second event, since the number of vowels and the number of total options are reduced.

5 0
3 years ago
Find the solution to the system of equations -3x-9y=18 4x+3y=12
chubhunter [2.5K]

Answer:

(6,-4)

Step-by-step explanation:

-3x-9y = 18 (equation 1)

4x+3y = 12 (equation 2)

multiply equation 2 by 3, and add it to equation 2

-3x-9y = 18

12x+9y = 36

-----------------

X's cancel out

9x = 54

Divide both sides by 9

x = 6

Plug in 6 for x in any of the original equations

(Plugging into Equation 2)

4(6)+3y = 12       Multiply 4(6)

24+3y = 12         Subtract 24 from both sides

3y = -12              Divide 3 on both sides

y = -4

Therefore the solution is (6,-4).

6 0
3 years ago
Simplify 6(501) using the distributive property. 3012 3006 2988 3000
ella [17]
 Ok so, I assume this is 6 times 501
     501
   x    6
-------------
   3006

5 x 6 = 30
6 x 0 = 0
6 x 1 = 6


3 0
3 years ago
Read 2 more answers
Construct a tangent to a circle through a point on the circle using the construction tool. Insert a screenshot of the constructi
otez555 [7]

Answer:

Below is an image of my work

Step-by-step explanation:

7 0
3 years ago
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