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klemol [59]
3 years ago
14

A baker decorates 42 cupcakes in 30 minutes.She decorates cupcakes at a constant rate.

Mathematics
1 answer:
NikAS [45]3 years ago
3 0

Answer:

12

Step-by-step explanation:

Well the way i said it was

-

42-30= 12

altho i not very sure

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How many 3/4s are in 2? Draw a Diagram
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Which is the approximate solution for the system of equations 3x+4y=2 and 4x+y=-4
harina [27]

3x+4y=2\qquad\text{subtract 3x from both sides}\\\\4y=-3x+2\qquad\text{divide both sides by 4}\\\\y=-\dfrac{3}{4}x+\dfrac{2}{4}\to y=-\dfrac{3}{4}x+\dfrac{1}{2}\\\\for\ x=0\to y=-\dfrac{3}{4}(0)+\dfrac{1}{2}=0+\dfrac{1}{2}=\dfrac{1}{2}\to\left(0,\ \dfrac{1}{2}\right)\\\\for\ x=2\to y=-\dfrac{3}{4}(2)+\dfrac{1}{2}=-\dfrac{3}{2}+\dfrac{1}{2}=-\dfrac{2}{2}=-1\to(2,\ -1)\\--------------------------------\\

4x+y=-4\qquad\text{subtract 4x from both sides}\\\\y=-4x-4\\\\for\ x=0\to y=-4(0)-4=0-4=-4\to(0,\ -4)\\\\for\ x=-1\to y=-4(-1)-4=4-4=0\to(-1,\ 0)\\\\Answer:\ \boxed{A.\ (-1.4,\ 1.5)}

6 0
3 years ago
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The question is down below
dmitriy555 [2]

Answer:

<h2>C) 132 sq. cm</h2>

Step-by-step explanation:

We must calculate the lateral area of a cylinder.

The formula is:

A=2\pi rH

r - radius

H - height

We have H = 6 cm and r = 3.5.

Substitute:

A=2\pi(3.5)(6)=42\pi\ cm^2

Use \pi\approx\dfrac{22}{7}

A\approx42\left(\dfrac{22}{7}\right)=(6)(22)=132\ cm^2

8 0
3 years ago
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