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3 years ago

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In her backyard, Sally is planting rows of potatoes. To plant rows of potatoes, Sally needs 2 2/3 square feet. There are 16 squa

re feet in Sally's backyard. So how many rows of potatoes can Sally plant?

1 answer:

DochEvi [55]3 years ago

4 0

I believe the answer is 6 but i’m not for sure

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PLEASE HELP ILL GIVE BRAINLY <br><br><br> True or false: you can collect data yourself?

cluponka [151]

Answer:

true

Step-by-step explanation:

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2 years ago

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Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations. (-4, 9), (0,

Tresset [83]

Answer:

$\boxed{y=2x^2+4x-7}$

Step-by-step explanation:

Let the quadratic function be

$y=ax^2+bx+c$

We substitute $(-4,9)$ into the equation to obtain;

$9=a(-4)^2+b(-4)+c$

$\Rightarrow 9=16a-4b+c---(1)$

We substitute $(0,-7)$ to obtain;

$-7=a(0)^2+b(0)^2+c$

$\Rightarrow c=-7---(2)$

We finally substitute $(1,-1)$ to obtain;

$-1=a(1)^2+b(1)^2+c$

$\Rightarrow -1=a+b+c---(3)$

We put equation (2) into equation (1) to get;

$9=16a-4b-7$

$16a-4b=16$

$\Rightarrow 4a-b=4---(4)$

$\Rightarrow -1=a+b-7$

$\Rightarrow a+b=6---(5)$

We add equation (4) and (5) to get;

$4a+a=6+4$

$\Rightarrow 5a=10$

$\Rightarrow a=2$

We put $a=2$ into equation (5) to get;

$2+b=6$

$\Rightarrow b=6-2$

$\Rightarrow b=4$

The reqiured quadratic function is

$y=2x^2+4x-7$

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2 years ago

Which expression can be simplified as18<br> O (1²) 9<br> (9)<br> O (no)-3<br> O<br> O<br> (n-3)⁰

sesenic [268]

Answer:

Option 4

Step-by-step explanation:

$(n^{-3})^6=n^{-18}=\frac{1}{n^{18}}$

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1 year ago

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Mazyrski [523]

Answer: =-2(xy-6y-5)

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3 years ago

If set D is not the empty set but is a subset of set E, then which of the following is true?

MrRa [10]

D∩E=D This is because since D is a subset of E then the elements they will have in common are the elements in D and D is not a null set

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