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2 years ago

5

A plate lunch costs $1.35. Bought separately, the items cost: sandwich, $0.95; milk, $0.35; and fruit, $0.20. Which is the less

expensive way to buy the items?
Plz explain

2 answers:

seraphim [82]2 years ago

8 0

Add 0.95 0.35 and 0.20 and if it’s less than 1.35 it’s ur answer but if 1.35 is less, than that’s ur answer

zmey [24]2 years ago

7 0

Answer:

Step-by-step explanation:

Cost of items =$0.95+$0.35+$0.20=$1.50

Plate cost=$1.35

Plate is less expensive way to buy items

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8 inch by 6 inch retangular photo inside a 10 inch by 8 inch rectangular fram how much greater is the perimeter of the frame

Flura [38]

The perimeter of frame is 1.29 greater

Step-by-step explanation:

Perimeter of a rectangular shape object is given by the formula;

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Perimeter of the photo is;

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Perimeter of the frame is;

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Divide perimeter of frame by that of photo as;

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The perimeter of frame is 1.29 greater

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Perimeter of rectangular shaped object:brainly.com/question/12919591

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3 years ago

Find a second-degree polynomial (that is, an equation of the form y =a + bx + cx2 d that goes through the three points (0, 1), (

Lostsunrise [7]

Answer:

$y = 1 - x^2$

Step-by-step explanation:

we're given three points (0,1),(1,0) and (-1,0). and and equation of a parabola

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we can plug in each of the coordinates, and 3 equations

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$1 = a + b(0) + c(0)^2$

$a=1\quad\quad\Rightarrow A$

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$0 = a + b(1) + c(1)^2$

$a + b + c=0\quad\quad\Rightarrow B$

(x,y) = (-1,0)

$0 = a + b(-1) + c(-1)^2$

$a - b + c=0\quad\quad\Rightarrow C$

These are are three equations, well we can simultaneously solve them to find the values of a, b and c.

we already found that, a = 1. so we plug this value in the rest of the equations. we'll use equation B.

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$b=-1-c$

we can substitute this value of b and a = 1, equation C

$a - b + c=0$

$1 -(-1-c) + c=0$

$1 +1+c + c=0$

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we can use this value of c back in b

$b=-1-(-1)$

$b=0$

hence our equation of the 2-degree polynomial will be:

$y = a + bx + cx^2$

$y = 1 + (0)x + (-1)x^2$

$y = 1 - x^2$

and this polynomial indeed passes through all the points (0, 1), (1, 0), and (-1, 0).

And since these are the only solutions to the simultaneous equation we solved (i.e. we have single values of a,b and c). there's no other possibility.

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2 years ago

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Mademuasel [1]

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3 years ago

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Novay_Z [31]

Answer:

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Step-by-step explanation:

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Thus expression can be written as

$\frac{8-3\sqrt{2} }{\sqrt{2} }$

Multiply numerator/denominator by $\sqrt{2}$

noting that $\sqrt{2}$ × $\sqrt{2}$ = 2

= $\frac{\sqrt{2}(8-3\sqrt{2}) }{\sqrt{2}(\sqrt{2}) }$

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You add the exponent. You never multiply it.

Hope this helps!

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