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Triss [41]
3 years ago
11

Distribute and simplify these radicals. 12 x(-1+ √5)

Mathematics
2 answers:
lions [1.4K]3 years ago
7 0

Answer is B. -2√3+2√15

Serga [27]3 years ago
5 0
Hello there!

Here is the answer worked out for you!
12x[-1+sqrt(5)]
-12x+12xsqrt(5)

Remember that you can only add like terms so you can't add -12x to 12xsqrt(5). The radical makes it an unlike term.

I hope this helped and best wishes!

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Which is NOT a valid rearrangement of: g = 4 a - 1
Troyanec [42]
The first One
g-1=4a
8 0
3 years ago
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Solve the value of y for the given values of x: 4x = 3y - 7; x= 4,5,6
julia-pushkina [17]
Thhe easiest way would be to solve for y first
4x=3y-7
add 7
4x+7=3y
divide both sides by 3
(4x+7)/3=y

try each
x=4
(4(4)+7)/3=y
(16+7)/3=y
(23)/3=y
7 and 2/3=y
(4,7.66666)


x=5
(4(5)+7)/3=y
(20+7)/3=y
(27)/3=y
9=y
(5,9)

x=6
(4(6)+7)/3=y
(24+7)/3=y
(31)/3=y
10 and 1/3=y
(6,10.333)



(4,7.66666)
(5,9)
(6,10.333)

when x=4, y=7 and 2/3
when x=5, y=9
when x=6, y=10 and 1/3



5 0
3 years ago
Read 2 more answers
What is the solution of the equation:
faltersainse [42]
7
Because 5-2 is seven so x =7
5 0
3 years ago
the price of a share of a company's stock has been decreasing at a constant rate of $0.50 per share every half hour. if the pric
Lady_Fox [76]

It should be for 5 hours if $30 is what they started with

4 0
3 years ago
Noah and Lin are marketing paper cones to hold popcorn to hand out at parent math night. They want the cones to hold 9 cubic inc
Vadim26 [7]

Answer: r = 1.69 inches

              h = 2.15 inches

Step-by-step explanation: Volume of a solid is the amount of space contained within a solid.

Volume of a cone is directly proportional to radius and height:

V=\frac{1}{3}\pi r^{2}h

They want the cones to hold the same volume of 9 cubic inches.

If height is 3:

9=\frac{1}{3}\pi r^{2}3

\pi r^{2}=9

r^{2}=2.864

r = 1.69 inches

When height is 3, radius is 1.69 inches for a cone to have 9 cubic inches of volume.

If radius is 2:

9=\frac{1}{3}\pi (2)^{2}h

h=\frac{9(3)}{4 \pi}

h = 2.15 inches

If radius is 2 inches, height of the cone is 2.15 inches.

6 0
3 years ago
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