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3 years ago

12

Find the value of x.

1 answer:

dexar [7]3 years ago

3 0

180 JAJAJAJAJAJAJAJAJAJAJAJA

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farouk scored 110% in his last mathematics test.Explain how this is possible.Give an actual mark allocations that will prove you

irakobra [83]

Answer:

Grades higher than 100% can be achieved by doing extra credit and/or answering bonus questions.

hope this helps! :)

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3 years ago

Lorraine and her family went to the beach for 4 hours on Sunday. They left the beach at 4:20 P.M. What time did they arrive at t

Airida [17]

ok so take 4:20 pm and subtract 4 hrs from it so they left at 12: 20 pm

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3 0

3 years ago

System of Equations <br> Need help<br> Trig

Yanka [14]

Looks like the system is

$\begin{cases}-2x+y+6z=1\\3x+2y+5z=16\\7x+3y-4z=11\end{cases}$

We can eliminate $y$ by taking

$(3x+2y+5z)-2(-2x+y+6z)=16-2(1)$

$\implies3x+2y+5z+4x-2y-12z=16-2$

$\implies7x-7z=14$

$\implies x-z=2$

so that $z=x-2$ , and

$(7x+3y-4z)-3(-2x+y+6z)=11-3(1)$

$\implies7x+3y-4z+6x-3y-18z=11-3$

$\implies13x-22z=8$

Substitute $z=x-2$ into this last equation and solve for $x$ :

$13x-22(x-2)=8$

$\implies13x-22x+44=8$

$\implies-9x=-36$

$\implies x=4$

Then

$z=x-2$

$\implies z=4-2$

$\implies z=2$

Plug these values into any one of the original equation to solve for $y$ :

$-2x+y+6z=1$

$\implies-2(4)+y+6(2)=1$

$\implies-8+y+12=1$

$\implies y=-3$

Hence the solution is x = 4, y = -3, and z = 2.

6 0

4 years ago

HELP! SOMEWHERE AROUND 20 POINTS

Aleks [24]

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3 years ago

A small jar of salsa contains 12 1/2 cup of salsa. A large jar of salsa contains 75 ounces. How many small jars of salsa is equa

Nata [24]

Answer:

6

Step-by-step explanation:

75 divided by 12.5 equals 6 cups of salsa

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3 years ago