Answer:
11.) 10w^2 + 43w + 21.
12.) -15y^2 - 2y + 8
Check the explanation for details
Step-by-step explanation:
11.) You are meant to multiply each row by both columns. For instance, multiply 5w by 2w and 7 you will get 10 w^2 and 35 w
Also, multiply 3 by both 2w and 7 you will get 6w and 21. Therefore,
Expansion of ( 5w + 3 )( 2w + 7 ) will produce 10w^2 + 37w + 6w + 21
= 10w^2 + 43w + 21.
12.) Repeat the same process by multiplying row by column.
Multiply -3y by 5y and 4 you will get -15y^2 and -12y.
Also, multiply 2 by same 5y and 4. You will get 10y and 8
Therefore, the expansion of
( -3y + 2 )( 5y + 4 ) will be
-15y^2 - 12y + 10y + 8
-15y^2 - 2y + 8
Answer:
area of the circle is 254.47yd^2
The value of 13 weeks in seconds is 7862400 seconds
<h3>Conversion of weeks to seconds</h3>
In order to convert weeks to seconds, we will use the following conversion factor
1week = 7 days
13weeks = 91days
<u>Convert days to hours</u>
Since 24 hours = 1 day, then;
91 days = (91*24)
91 days = 2184 hours
Convert hours to seconds
1 hour = 3600secs
Hence 2184 hours = (2184*3600)
2184 hours = 78624000 seconds
Hence the value of 13 weeks in seconds is 7862400 seconds
Learn more on conversion on weeks to seconds here: brainly.com/question/11947673
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You need to make the right side = 0
To do this you subtract 10 from both sides of the equation:-
x^2 + 6x + 9 - 10 = 10 - 10
x^2 + 6x - 1 = 0
Answer:
A
Step-by-step explanation:
The base of the larger triangle is <em>twice as large</em> as the smaller one: <em>6 v 3 --> 6 : 3 --></em> 2 : 1.
