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1 year ago

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Order the following decimals in ascending order: 1.305, 1.35, 1.053, 1.53

1 answer:

PSYCHO15rus [73]1 year ago

7 0

1.053, 1.305, 1.350, 1.53

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How do you answer (-3)² ?

nadya68 [22]

The two at the top technically means how many times the number in the bracket times ITSELF by, so its technically -3 x -3 which is +9 , cause a negative x negative = positive

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3 years ago

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What is the area of 4 yards, 4 yards 7 yards,13 yards?

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Answer: 5,824 yards

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3 years ago

Sam invest $8333 into a savings account with a compound interest of 2.7% for 10 years what is Sams balance after 10 years

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2 years ago

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Is x = 3 1/4 a solution to the equation 12 5/8 = x +9 1/4

navik [9.2K]

x=3 1/4 is not a solution to the equation.

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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.

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3 years ago