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3 years ago

It cost $3.45 to buy 3/4 lb of chopped walnuts. how much would it cost to purchase 7.5 lb of walnuts

Mathematics

1 answer:

Bezzdna [24]3 years ago

4 0

Answer:

$34.5

Step-by-step explanation:

4/3x3.45=4.6

7.5x4.6=34.5

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Solve the following equation by completing the square. 12x^2 - 48x = -39

daser333 [38]

Answer:

$\large\boxed{\boxed{x = \begin{cases} \frac{ \sqrt{3} }{2} + 2 \\ - \frac{ \sqrt{3} }{2} + 2 \end{cases}}}$

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>

quadratic equation
PEMDAS

<h3>let's solve:</h3>

$\sf divide \: both \: sides \: by \: 12 : \\ \sf {x}^{2} - 4x = - \frac{13}{4}$
$\sf \: add \: { - 2}^{2} \: to \: both \: sides : \\ \sf { {x}^{2} } - 4x + ( - {2}^{2} ) = \frac{13}{4} + ( { - 2}^{2} ) \\ {x}^{2} - 4x + 4 = \frac{13}{4} + 4$
$\sf simplify \: addition : \\ \sf { {x}^{2} } - 4x + 4 = \frac{3}{4}$
$\sf use \: {a}^{2} - 2ab + {b}^{2} = (a - b {)}^{2} : \\ \sf (x - 2 {)}^{2} = \frac{3}{4}$
$\sf squre \: root \: both \: sides : \\ \sf \sqrt{(x - 2 {)}^{2} } = \pm \sqrt{ \frac{3}{4} } \\ \begin{cases} x - 2 = \frac{ \sqrt{3} }{2} \\x - 2 = - \frac{ \sqrt{3} }{2} \end{cases}$
$\sf add \: 2 \: to \: both \: sides : \\ \sf \begin{cases}x = \frac{ \sqrt{3} }{2} + 2 \\ x = - \frac{ \sqrt{3} }{2} + 2 \end{cases} \\ \therefore \: x = \begin{cases} \frac{ \sqrt{3} }{2} + 2 \\ - \frac{ \sqrt{3} }{2} + 2 \end{cases}$

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3 years ago

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What is the solution of the system?

Murrr4er [49]

The Answer is....
x=-3 and y=3
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3 years ago

Use the Desmos Interactive Linear Regression. Find

Pavel [41]

Answer:

Least-Squares Regression Line:

y ~ –0.741505x + 19.6784

Correlation Coefficient:

r = –0.9777

Step-by-step explanation:

Did it on edge and got it right

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3 years ago

What line describes the line parallel to y= -1/3x+5 ?

Alisiya [41]

Answer:

C. y = -1/3 + 1

Step-by-step explanation:

Parallel equations have the same slope.

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3 years ago

the volume of the truck is 162 yards. To find how many cubes will fit in each dimension, divide that length by the side of the c

spayn [35]

Answer:

180 cubes would be fit inside the truck

Step-by-step explanation:

well we know 1 cube is 1/10 of a yard

so let’s make it a easier number and say 10 cubes is 1 yard (you multiply 10 on each side, as long as you multiply the same number, which can be any number but I use 10 since it’s easier, on both sides, it’ll be the same thing.

so 162/10=16

So 16, 10 cubes si we multiply those two and you’ll get 160.

But there’s 2 yards not filled yet, we know that 1 yard is 10 cubes, so 2 yards would be 20 cubes.

so 160+20=180

180 cubes

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3 years ago

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