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3 years ago

7

I solved this quadratic using the square root property. I did it 2 ways but I am not sure which one is correct.

2 answers:

nika2105 [10]3 years ago

7 0

Answer:

it's your second answer: )

frez [133]3 years ago

4 0

Answer:

the one on the right

Step-by-step explanation:

:) s s

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How do you solve each system of equations?

stiv31 [10]

Answer:

$x=1,y=3,z=1$

Step-by-step explanation:

$4x-4y+4z=-4$

$4x=-4+4y-4z$

$x=-1+y-z$

Substitute $x=-1+y-z$ into second equation:

$4\left(-1+y-z\right)+y-2z=5$

$-4+4y-4z+y-2z=5$

$5y-6z-4=5$

$y=\frac{6z+9}{5}$

Substitute $x=-1+y-z$ and $y=\frac{6z+9}{5}$ into the third equation:

$\frac{-41z-54}{5}+3=-16$

$-41z-54=-95$

$z=1$

Substitute $z=1$ into $y=\frac{6z+9}{5}$ :

$y=3$

Plug in y and z values into $x=-1+y-z$ :

$x=1$

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3 years ago

jenette ordered a large bucket of popcorn at the movies.the graph shows the amount of popcorn in her bucket over time

Elenna [48]

Answer:

A

Step-by-step explanation:

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2 years ago

Help me please need answer and explained!!!!

Flauer [41]

Whatchu need help with?

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3 years ago

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A rectangle has an area of 72 swaure units. The width of the rectangle is 9 units. The length of the rectangle is 2x + 4. What i

vichka [17]

Answer:

8 units

Step-by-step explanation:

<u>Area of a rectangle</u> = <em>Width</em> multiplied by Length

Substitute in all the known numbers into this formula to get

<u>72</u> = <em>(9)</em> × $(2x+4)$

Solve the equation for x, to find out the length

$9(2x+4)=72$

$2x+4=72/9$

$2x+4=8$

$2x=8-4$

$2x=4$

$x=4/2$

$x=2$

Length of the rectangle = $(2x+4)$

$2(2)+4$

$4+4=8$

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3 years ago

Lisa has 100 dollars in A savings account. The interest rate is 5% per year and is not compounded. How much interest will she ea

den301095 [7]

20 dollars, she will earn this because five percent of one hundred is five, times five by four and you get your answer of twenty!

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3 years ago

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