Factor by grouping. Step by step appreciated
Answers
Answer:
(x^2+8) ( y+4)
Step-by-step explanation:
x^2y + 8y+ 4x^2 +32
Splitting into two groups
x^2y + 8y+ 4x^2 +32
Factor y out of the first group and 4 out of the second group
y( x^2+8) + 4(x^2+8)
Factor out (x^2+8)
(x^2+8) ( y+4)
Answer:
(x^2+4)(y+3)
Step-by-step explanation:
x^2y+4y+3x^2+12
factor by grouping
=x^2y+4y + 3x^2+12
left. right
take common in left y and in right 3
=y(x^2+4) + 3(x^2+4)
now common term is (x^2+4)
=(x^2+4) (y+3) answer
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You can find the __________ parts of two congruent triangles by aligning them perfectly on top of each other.A. complementaryB. similarC. correspondingD. supplementary
Answers
standard form: ax^2+bx+c
vertex form: a(x-h)^2+k
B.60%
C.74%
D.167%
Answers
Answers
Answer:
1 whole one and a third of one.
Step-by-step explanation:
1 1/3 of a granola bar
Answer: 1.33333333333 or 1.3 as a repeating decimal
Just divide 8 ÷ 6
What is the 22nd term of the sequence below?
-9,-3,3,9
Answers
both seem to be arithmetic
first one
adds 9
starts with -7
an=a1+(n-1)d
a1=first term
d=common difference
an=-7+9(n-1)
51 term is
a51=-7+9(51-1)
a51=-7+9(50)
a51=-7+450
a51=443
51term is 443
adds 6 every times
starts with -9
an=-9+6(n-1)
22nd term
a22=-9+6(22-1)
a22=-9+126
a22=117
22nt term is 117
B.) x= -8
C.) x= -6
D.) x= -1
Answers
2x + 4 = -8
Subtract 4 to from sides
2x = -12
divide both sides by 2
x = -6
The correct answer is C. -6
2 x -6 + 4 = -8
Hope this helps
Please note your working out with your answer, thank you.
Q11) A lifeguard on top of an observation tower 12.5m high notices a surfer in trouble at an angle of depression of 8 degrees. How far, correct to one decimal place, is the surfer from the tower?
Q13) A boat is 420m from the base of the cliff. The angle of depression of the boat from the top of the cliff is 28 degrees. Find the height of the cliff to the nearest metre.
Answers
I am not doing that with sin, cos and pythagorean theorem.
DEFINITION: we call TAN x=sin x / cos x
This means that in a right triangle the tangent of an angle is the ration of opposed side by adjacent side.
11: tan 8°=12.5/d
==>d=12.5/tan 8°=12.5/0.14054...=88.942121...m≈88.9 (m)
12:
tan 28°=h/420
==>h=420*tan 28°=420*0.5317...=223.3179...≈223.3 (m)