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antoniya [11.8K]
3 years ago
6

6. Solve the following system of equations

Mathematics
2 answers:
Setler79 [48]3 years ago
3 0
The answer is A. you basically just plug the numbers in and see which one is correct.
JulijaS [17]3 years ago
3 0

Answer:

A, x=-1, y=4

Step-by-step explanation:

First off you have to get rid of the y, so you have to multiply the the whole first equation by 5, and the whole second equation by 3, and then you can add your ys together and get 0 and you want to add both of the equations together. it will leave you with 34x=-34 so x=-1. take the first equation and plug in the answer you got, so it should be -5+3y=7, add 5 to both sides and then you will get 3y=12 divide that by 3 and you have y=4. So the answer is x=-1, y=4

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You read 9.75 pages in your science book and 24.5 pages of a play for English class. It takes you 1.2 minutes to read each page
Kazeer [188]

Answer:

31.3 minutes were spent reading

Step-by-step explanation:

If it takes 1.2 minutes to read each page for science and you read 9.75 pages of science, then you must multiply these two numbers together

9.75 pages × 1.2 mins = 11.7

If it takes 0.8 of a minute to read each page of the play and you read 24.5 pages of a play, then you also multiplying these two numbers

24.5 pages × 0.8 mins = 19.6

If we must find out the time spent reading, we must add these two numbers together

11.7 + 19.6 = 31.3

7 0
4 years ago
Read 2 more answers
B Which of the statements is true about the polygons below E D 120 degrees C 90 90 60 60 120 degrees 90 90 F D Polygon A Polygon
Serhud [2]

The statement that is true about the polygons is: the opposite angles of the rectangle are supplementary, therefore, a circle can be circumscribed about the rectangle.

<h3>What is a Circumscribed Quadrilateral?</h3>

An circumscribed quadrilateral is a quadrilateral whose four side lie tangent to the circumference of a circle. The opposite angles in an inscribed quadrilateral are supplementary, that is, when added together, their sum equals 180 degrees.

From the two figures given, the opposite angles of the rectangle are supplementary, therefore, a circle can be circumscribed about the rectangle. (Option D).

Learn more about circumscribed quadrilateral on:

brainly.com/question/26690979

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7 0
2 years ago
Alexander earns ​12% commission each week. Last​ week, he sold ​$6,400 worth of stocks. How much did he make last week in​ commi
zavuch27 [327]

Answer:

Commission = $768

Total amount commission in 2011 = $41,472

Step-by-step explanation:

Commission = Sales × 12% of sales

Commission = $6,400 × .12

Commission = $768

Number of weeks in a year = 52 weeks

Total amount commission in 2011 = Commission per month × Number of

                                                            weeks in a year

Total amount commission in 2011 = $768 × 52

Total amount commission in 2011 = $41,472

5 0
3 years ago
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Tomtit [17]

Answer:

CD = 3

Step-by-step explanation:

If B is the midpoint of AC, AB and BC are equal.  BC = 2, so that means AB = 2.  This means AC = 4.  If the whole line = 7, then CD, the only segment we don't know, = 7 - 4, which equals 3.

4 0
3 years ago
Read 2 more answers
Means and SDs. For each part, compare distributions (1) and (2) based on their means and standard deviations. You do not need to
jarptica [38.1K]

Answer:

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8 0
3 years ago
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