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3 years ago

11

Write an inequality for the situation to pay a child's price you must be 12 years or younger why is there not only one correct a

nswer to an inequality

1 answer:

Alex_Xolod [135]3 years ago

3 0

5x+2<4×+4 this inequality will pay a childs price which is 2 $

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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

Which of these equations have no solution? Check all that apply.

ollegr [7]

Answer:

the first one

Step-by-step explanation:

6 0

3 years ago

Read 3 more answers

jennifer reads p pages every day . After 15 days , she has read 300 pages . write an equation to represent this situation

jeyben [28]

Answer:

20

Step-by-step explanation:

p = 1 day

300 = 15

300/15 = 20

Jennifer reads 20 pages per day

6 0

3 years ago

Read 2 more answers

Amanda recorded the temperatures at which two oils freeze:

lianna [129]

Answer:

Peanut oil freezes at a higher temperature than olive oil because 3.1 °C > –6.1 °C.

Step-by-step explanation:

Well since 3.1 is greater than -6.1 then it should be Peanut oil freezes at a high temperature. I did the test and I got it right. I hope you do to. :)

4 0

3 years ago

Juan is making a cake for his mom's birthday. For every three cups of

Vlad [161]

Answer:

44 teaspoons

Step-by-step explanation:

33 divided by 3 is 11 and 4 x 11 is 44 if juan used 4 teaspoons of sugar every 3 cups of flour then 3 goes into 33 11 times and 4 x 11= 44

4 0

3 years ago