To factor,
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[[[</h2>
1) First multiply coefficient of a² and constant no,
That is,
3×(-42)=-126
Since the<u> resultant no is negative</u>, you should find two such factors of 126 <u>which</u> <u>will give us the coefficient of a (=11)</u> on subracting those factors.
2) Find the factor
126=2×3×3×7
=18×7
18 and 17 are factors of 126
Also,18-7 =11.
So they are required factors for factoring,
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Once you have understood above steps you can solve on your own. All you need to do is split 11 into factors ,take common terms and you will get answer.
<u>Answer:</u>
3a²+11a-42
=3a²+(18-7)a -42
=3a²+18a-7a-42
=3a(a+6) -7(a+6)
=(a+6)(3a-7)
Answer: Well, when looking at this you should look up a percentage calculator (sorry i cant really help)
Step-by-step explanation:
Google
Percentage calc
Answer:
length = 4 feet
width = 9 feet
Step-by-step explanation:
Perimeter of a rectangle = 2W + 2L, where W is the width and L is the length
If the perimeter is 26 feet, then: 26 = 2W + 2L
If the width is 5 feet more than the length, then: W = L + 5
Substitute W = L + 5 into 26 = 2W + 2L and solve for L:
26 = 2(L + 5) + 2L
26 = 2L + 10 + 2L
26 = 4L + 10
16 = 4L
L = 4
Now substitute L = 4 into W = L + 5 to find W:
W = 4 + 5 = 9
Therefore, length = 4 feet and width = 9 feet
Answer:
72 cubic inches
it's the good answer I looked at it twice