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Sav [38]
3 years ago
9

8y cubed +3xy+2y squared - 4xy

Mathematics
1 answer:
Irina-Kira [14]3 years ago
7 0

Answer:

8y^2 + 3xy + 2y^2 - 4xy

8y^2 + 2y^2 + 3xy - 4xy

10y^4 - 1xy

Step-by-step explanation:

8y^2 + 3xy + 2y^2 - 4xy

8y^2 + 2y^2 + 3xy - 4xy

10y^4 - 1xy

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3,000 ÷ 50=300 ÷ 5 =?
Dvinal [7]
I’m guessing it’s 60
4 0
2 years ago
1.how many ways can 3 boys and 6 girls sit in a row of 4 chairs?​
Hoochie [10]

Step-by-step explanation:

first way by sitting 3 person in one chair

3 0
3 years ago
A food cooperative is a business that usually offers special prices on locally grown food and produce. Some are clubs and some a
Hoochie [10]

Answer:

The indifference point is 8 weeks.

Step-by-step explanation:

<u>First, we establish the total cost formula for each:</u>

x= number of weeks

Club:

Total cost= 20 + 15*x

Retail:

Total cost= 17.5*x

<u>Now, we equal both formulas and isolate x:</u>

20 + 15x = 17.5x

20 = 2.5x

8=x

The indifference point is 8 weeks.

<u>Prove:</u>

Total cost= 20 + 15*8= $140

Total cost= 17.5*8= $140

3 0
2 years ago
Tan(2 sin^-1 0.4)<br> Find the Exact value
stiv31 [10]

Answer:

tan(2u)=[4sqrt(21)]/[17]

Step-by-step explanation:

Let u=arcsin(0.4)

tan(2u)=sin(2u)/cos(2u)

tan(2u)=[2sin(u)cos(u)]/[cos^2(u)-sin^2(u)]

If u=arcsin(0.4), then sin(u)=0.4

By the Pythagorean Identity, cos^2(u)+sin^2(u)=1, we have cos^2(u)=1-sin^2(u)=1-(0.4)^2=1-0.16=0.84.

This also implies cos(u)=sqrt(0.84) since cosine is positive.

Plug in values:

tan(2u)=[2(0.4)(sqrt(0.84)]/[0.84-0.16]

tan(2u)=[2(0.4)(sqrt(0.84)]/[0.68]

tan(2u)=[(0.4)(sqrt(0.84)]/[0.34]

tan(2u)=[(40)(sqrt(0.84)]/[34]

tan(2u)=[(20)(sqrt(0.84)]/[17]

Note:

0.84=0.04(21)

So the principal square root of 0.04 is 0.2

Sqrt(0.84)=0.2sqrt(21).

tan(2u)=[(20)(0.2)(sqrt(21)]/[17]

tan(2u)=[(20)(2)sqrt(21)]/[170]

tan(2u)=[(2)(2)sqrt(21)]/[17]

tan(2u)=[4sqrt(21)]/[17]

7 0
3 years ago
15 ounces of gold cost $6058.50 find the unit rate in dollars per ounce
Vlad [161]
The unit rate in dollars per ounce would be $403.90.
Hope this helps! :D
3 0
3 years ago
Read 2 more answers
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