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3 years ago

Which of the following is not a congruence transformation?

1 answer:

5 0

Dilating, A, is the answer. This is because the definition of congruency includes the triangle or shape being completely equal in shape, size and angles. If the shape was dilated, the surface area would shrink which does not come under the definition of a congruent shape.

Given this, if you rotate or translate (flip) a shape, its dimensions do not change.

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Find the slope of the given line, if it is defined.

il63 [147K]

Answer: A. The slope is $-\dfrac{4}{3}$ .

Step-by-step explanation:

The slope of a line helps to specify the direction of the line.

The slope of a line that passes through (a,b) and (c,d) is given by :-

$\text{Slope}=\dfrac{d-b}{c-a}$

Then the slope of a line passes through origin i.e. (0,0) and (-9,12) is given by :-

$\text{Slope}=\dfrac{12-0}{-9-0}\\\\\Rightarrow\ \text{Slope}=\dfrac{12}{-9}\\\\\Rightarrow\ \text{Slope}=-\dfrac{4}{3}$

Hence, the slope is $-\dfrac{4}{3}$ .

8 0

2 years ago

On Monday it snowed 9 inches. The next day it snowed 1/2 that amount. How much did it snow on the second day?

riadik2000 [5.3K]

It probably snowed 4.5 inches

3 0

2 years ago

Unit rates can be helpful with creating a ratio table and plotting the equivalent ratios on a coordinate plane. Explain why. PLE

uysha [10]

Answer:

Unit rate is often a useful means for comparing ratios and their associated rates when measured in different units. The unit rate allows us to compare varying sizes of quantities by examining the number of units of one quantity per one unit of the second quantity. This value of the ratio is the unit rate.

3 0

2 years ago

The school purchased baseball equipment and uniforms for a total cost of $1836. the equipment cost $612 and the uniforms were $2

liraira [26]

Answer:

48 uniforms

Step-by-step explanation:

1836-612=1224.

1224/25.50=48.

Checked answer:

25.50 x 48= 1224

6 0

3 years ago

A roll of ribbon is used to tie 12 gifts which will be given to teachers on Teacher's

Wewaii [24]

Answer:

22.2m

Step-by-step explanation:

1 roll to 12 gifts

one gifts uses 1,85m of ribbon

1,85m is the length

12 × 1.85 = 22.2m

3 0

2 years ago