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3 years ago

Multiply factor 8(x-3y)(x+3y) to determine the original polynomial

2 answers:

4 0

If I'm doing this correctly, you would need to multiply everything inside the parenthesis by 8. So it would be 8x-24y·8x+24y. I'm sorry if that's not right, but that is my interpretation of the problem. Hope I was of some assistance :)

Goryan [66]3 years ago

3 0

Let a = 8(x - 3y)(x + 3y)

by multiplying the functions in the bracket first
⇒ a = 8[ x² + 3xy - 3xy - 9y²]
a = 8 [x² - 9y²]

by now expanding the brackets
⇒ a = 8x² - 72y²

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Someone please help me

exis [7]

V = 1/3 l h w

V = 1/3 (12)(15)(9)
V= = 540

answer 540 m^3

8 0

3 years ago

you are making necklaces for your friends. You have 72 blue beads and 42 red beads. Each friend will recieve a identical necklac

Leni [432]

Answer: 6

Step-by-step explanation: Because, 6 is the highest number you can multiply both with, 6x12 = 72 and 6x7 = 42

4 0

3 years ago

Read 2 more answers

The voltage V in a simple electrical circuit is slowly decreasing as the battery wears out. The resistance R is slowly increasin

hoa [83]

Answer:

$\frac{dI}{dt}=-0.00016 A/s$

Step-by-step explanation:

We are given that

By ohm's law

$V=IR$

R=389 ohm

I=0.03 A

$\frac{dV}{dt}=-0.06V/s$

$\frac{dR}{dt}=0.07ohm/s$

We have to find rate of change of current I means $\frac{dI}{dt}$

Differentiate the equation w.r.t t

$\frac{dV}{dt}=\frac{dI}{dt}R+I\frac{dR}{dt}$

Substitute the values then we get

$-0.06=\frac{dI}{dt}\times 389+0.03\times 0.07$

$-0.06=389\frac{dI}{dt}+0.0021$

$-0.06-0.0021=389\frac{dI}{dt}$

$-0.0621=389\frac{dI}{dt}$

$\frac{dI}{dt}=\frac{-0.0621}{389}=-0.000160 A/s$

Hence, the current I is changing at the rate=-0.00016A/s

4 0

4 years ago

888 divided by 8 and<br>574 divided by 7<br>

Reil [10]

Answer:

111 & 82

Step-by-step explanation:

888/8=111

574/7=82

5 0

3 years ago

Read 2 more answers

7th-grade math help me, please

Lady bird [3.3K]

Answer:

> -5 4/5 is greater than

Step-by-step explanation:

First you must make them have the same denominator. So you think, which numbers do 5 and 16 have in common. 5, 10, 15 , 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80...... 16, 32, 48, 64, 80. We see that they have the number 80 in common so we multiply 4/5 by 16 which equals 64/80 then we multiply 3/16 by 5 which equals 15/80 we now see the new equation which is: -5 64/80 ___ -5 15/80. we see that -5 64/80 is greater

3 0

3 years ago