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murzikaleks [220]
3 years ago
13

Ms. Bauer corrected 2⁄3 of the science quizzes. Mr. Richardson corrected 2⁄7 of the quizzes. What fraction of the science quizze

s has been corrected?
Mathematics
1 answer:
IrinaK [193]3 years ago
7 0
We must add 2/3 and 2/7.
We have to convert these to fractions with "21" as the denominator.
14/21 plus 6/21 =
20/21 of the quizzes have been corrected.


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Lesson Posttes
joja [24]

A translation 2 units to the left followed by dilation by 1/2.

The correct option is (B).

<h3>What is congruency?</h3>

It states that that two triangles are said to be congruent if they are copies of each other and when superposed, they cover each other exactly.

The complete question is:

Which of the following composition of transformations would create an

image that is not congruent to its original image?

A rotation of 45° followed by a reflection across the x-axis

A translation 2 units to the left followed by dilation by 1/2

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A rotation of 135º followed by a translation of 4 units to the right.

After a translation of 2 units to the left followed by dilation by 1/2 the image will not be congruent to its original image.

All other options are reflection and rotation, which not fit into the situation.

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2 years ago
Light bulbs manufactured at a certain factory have a 3% probability of being defective. What is the probability that 5 out of a
Eddi Din [679]
There is a 3% chance of each light bulb being defective, and we only want 5 of them to be defective. The chance is then:

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5 0
3 years ago
Find the Circumference of a circle with a Diameter of 9 inches Group of answer choices 9 pi inches 9 pi inches^2 9 pi inches^3 1
katen-ka-za [31]

Answer: 9\pi\ in.

Step-by-step explanation:

Given

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So, the radius is r=\frac{d}{2}=4.5\ in.

The circumference is given by 2\pi r

Insert the values

\Rightarrow 2\pi \cdot 4.5\\\Rightarrow 9\pi \ in.

Thus, the circumference of the circle is 9\pi\ in.  

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Answer:

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Step-by-step explanation:

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The store that has more sales revenue is store A
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