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serious [3.7K]
3 years ago
7

Brady uses 3 balloons to make one decoration for a school party. If he has 400 balloons,which equation below uses compatible num

bers to estimate the number of decorations that Brady will be able to make? A 300:3=100 B 390:3=130 C 450:3=150 D 400:2=200
Mathematics
1 answer:
lara31 [8.8K]3 years ago
8 0

Answer: the answer is b

Step-by-step explanation:

If you take 400 balloons and divide it by 3 balloons; its cause 3 balloons make 1 decoration you get 133.3333333333 decorations in all but, as an estimation is 130 decorations

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Can anyone help me solve these linear systems using substitution?
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Answer:

1. (2,2)

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Step-by-step explanation:

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2 years ago
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The graph of function g is a vertical stretch of the graph of function f ​​by a factor of 3. Which equation describes function g
anyanavicka [17]

Answer:


Step-by-step explanation:

A vertical stretch by a factor of k means that the point (x, y) on the graph of f (x) is transformed to the point (x, ky) on the graph of g(x), where k <1.

If k =1, then same graph we obtain and if k>1 we get a vertically shrink graph.

In our question, there is a vertical stretch of 3. This means new graph would have points as (x,y/3)

i.e. instead of f(x) = y, we have now f(x) = y/3

So transformation is g(x) = 3f(x)

Option A is correct.

2) Here f(x) = 3x+8 is transformed to g(x) =3x+6

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8 0
3 years ago
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XYZ has coordinates X(2, 3), Y(1,4), and Z(8,9). A translation maps X to X'(4,7). What are the coordinates for Y' and Z' for thi
Rashid [163]

Answer:

The coordinates are Y'(x,y) = (3, 8) and Z'(x,y) = (10, 13).

Step-by-step explanation:

First, we have to derive an expression for translation under the assumption that each point of XYZ experiments the same translation. Vectorially speaking, translation from X to X' is defined by:

X'(x,y) = X(x,y) + T(x,y) (1)

Where T(x,y) is the vector translation.

If we know that X(x,y) = (2,3) and X'(x,y) = (4,7), then the vector translation is:

T(x,y) = X'(x,y)-X(x,y)

T(x,y) = (4,7) - (2,3)

T(x,y) = (2, 4)

Then, we determine the coordinates for Y' and Z':

Y'(x,y) = Y(x,y) + T(x,y)

Y'(x,y) = (1,4) + (2,4)

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Z'(x,y) = Z(x,y) + T(x,y)

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The coordinates are Y'(x,y) = (3, 8) and Z'(x,y) = (10, 13).

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3 years ago
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