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2 years ago

I need help with these questions please.

Mathematics

1 answer:

astraxan [27]2 years ago

8 0

Answer:

A'(0,1), B'(1,0) and the lines are parallel
dilation factor is 2
A(-2,0), B(2,0); twice the length

Step-by-step explanation:

1. Whenever dilation is about the origin, the dilation factor affects each coordinate individually. When the dilation factor is 1/2, each coordinate of the image is 1/2 the coordinate of the pre-image:

A(0, 2) ⇒ A'(0, 1)

B(2, 0) ⇒ B'(1, 0)

2. The above description works in reverse, as well. If the dilation factor is 1/2, the pre-image has coordinate values twice those of the image. Dilation does not change directions or angles, so any dilated lines are parallel.

3. The center of dilation is an invariant point: it does not move. As in the second problem, the pre-image is twice the size of the image when the scale factor is 1/2.

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Kamila [148]

Answer:

74.36 g of aluminium acetate.

730.27g of aluminium acetate.

- to the nearest hundredth.

Step-by-step explanation:

Acetic acid is usually written as CH3COOH.

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So 6 moles of acetic acid produce 1 mole of aluminium acetate.

Using the molecular masses

6*( 1.008*4 + 12.011*2 + 16 *2) g acetic acid gives (26.98+3(36.032+ 2*12.011)

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So 125 g gives (207.142 / 348.228) * 125

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275 g gives (207.142 / 78.004) * 275

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3 years ago

What is i^34?<br><br>A. -i<br>B. 1<br>C. -1<br>D. i<br>

babymother [125]

Answer: C -1

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2 years ago

An artist agrees to paint a landscape painting at 0.30 per square inch. if the painting is 13 inches by 17 inches, how much shou

Yuri [45]

We know that
[area of the painting]=13 in* 17 in-----> 221 in²

if a<span>n artist painting at
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x$--------------> 221 in²
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the answer is
$66.30

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2 years ago

Graph the line that goes through the point (-6,-2) with slope of 1

vekshin1

Answer:

<h2>Check out the image.</h2>

Step-by-step explanation:

Let, the equation of the straight line is y = mx + c; where m is the slope of the equation and c is the constant.

The line has the slope 1.

Hence, the equation becomes y = x + c.

Since, the line passes through (-6, -2), -2 = -6 + c or, c = 4.

Hence, the equation of the straight line becomes y = x + 4.

Putting x = 0, we get, y = 4.

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3 years ago

What is the initial value.

GrogVix [38]

The function shown in the graph is a linear function, for a given linear function, the initial value is obtained at y-intercept. The y-intercept is the point where the graph cuts the y-axis. At this point the value of x is zero. Thus from the graph given, the point x=0 at y=2, hence the initial value is y=2.
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2 years ago