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4 years ago

I'd really appreciate it if someone could help me with this question? I don't know why, but I'm sorta struggling with it.

2 answers:

8 0

5x -6
-3x^3 + 2x^2 (Note how I changed the signs.)
------------------------------------
-3x^3 + 2x^2 + 5x - 6 (this is the "difference" that you wanted.

aivan3 [116]4 years ago

3 0

$-3x^3+2x^2+5x-6$

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Grandma baked 1.5 times as many pancakes as waffles. After she baked 45 more waffles, and her grandchildren ate 12 pancakes, the

Komok [63]

Step-by-step explanation:

let x represent the no of pancakes,

she baked 1.5 times pancakes more than waffles,

so from this, no of pancakes = 1.5x,

then she baked more 45 waffles,

no of waffles = (x +45)

so you had 1.5x pancakes and the children ate 12 out of them. the no of pancakes has then been reduced by 12.

thus, no of pancakes = ( 1.5x -12 )

now they see that they have 17 more waffles that pancakes left. this means that :

no of waffles - no of pancakes = 17

(x+45) - (1.5x - 12) = 17

x - 1.5x + 45 + 12 = 17

x = -50 / -0.5

x = 100

hence, there were 100 waffles initially.

hope you understand this,

-s.

4 0

3 years ago

Please help with 1 and 2 :)

nordsb [41]

Answer:

1. The domain for the number of fruit cups is 0 minimum and 20 maximum.

[0 < x < 20].

2. [10 < y < 70]

Step-by-step explanation:

1. The domain is 0 to 20 because there are 20 people total who will each have a fruit cup

2. The range is $10 to $70 because the minimum price is $10 without any fruit cups and $70 when there are 20 fruit cups.

4 0

4 years ago

Which collection of three side lengths can be used to form a triangle?

LUCKY_DIMON [66]

That would be B because 65 < 40 + 30

6 0

3 years ago

Solve for y: x/y - 8 = w

inysia [295]

X/y-8=w
x-8y=wy
x=wy+8y
x=y(w+8)
y= $\frac{x}{w+8}$

4 0

3 years ago

The area of the rectangle is 49 square units.

Ilia_Sergeevich [38]

Answer:

$\boxed{70 \ \text{units}^{2}}$

Step-by-step explanation:

I assume that the polygon is made up of a rectangle and two triangles. Thus, the area of the polygon is the area of the triangles and the rectangle.

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$\text{Area of polygon} = \text{Area of rectangle} + \text{Area of triangle}_{1} } + \text{Area of triangle}_{2}$

➡ $\text{Area of polygon}= 49 + 7 + 14$

➡ ${\bold{Area \ of\ polygon = 49 + 21 = \underline{70 \ units}^{2}}$

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3 0

2 years ago