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3 years ago

To eliminate the x-terms and solve for y in the fewest steps, by which constants should the equations be multiplied

Mathematics

1 answer:

vitfil [10]3 years ago

5 0

Answer: I believe this is the answer.

$6x-5y=17\\7x+3y=11$

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7 and -6

-7 and 6

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Can someone please help

HACTEHA [7]

Answer:

Step-by-step explanation:

The length of all sides will increase by a scale factor of 3 or they will triple

6 0

3 years ago

Find the missing side lengths. Leave your answers as radicals in simplest form.

Leto [7]

9514 1404 393

Answer:

x = 18
y = 9

Step-by-step explanation:

The ratios of side lengths in a 30°-60°-90° triangle are ...

1 : √3 : 2

In the same order, the given side lengths are ...

y : 9√3 : x

Comparing these two sets of ratios, we see that we can make the first equal to the second by multiplying by 9:

9(1) : 9√3 : 9(2) = y : 9√3 : x

Then y = 9·1 = 9, and x = 9·2 = 18.

The missing side lengths are x = 18, y = 9.

4 0

2 years ago

Any help will be great!

son4ous [18]

Answer:

180

Step-by-step explanation:

75% times 240 would be 180

6 0

3 years ago

Read 2 more answers

Suppose the average number of rainy days in albuquerque in september is about 7. what is the probability that in september 2017,

Otrada [13]

1/62 chance of 10 rainy days

3 0

2 years ago

Disks of polycarbonate plastic from a supplier are analyzed for scratch and shock resistance. The results from 100 disks are sum

s344n2d4d5 [400]

The contingency tables serve to record the frequencies with which an object appears according to the measured variables, in this case two variables, each with two scales, the scratch resistance and the shock resistance, both measured as high and low.

The information is organized in such a way that the value of each box represents the total number of objects that meet the characteristics measured for each variable, for example in this case we have 70 discs with high shock resistance and high scratch resistance, 9 with high scratch resistance and low shock resistance, 16 with high shock resistance and low scratch resistance and finally 5 discs with low scratch and shock resistance.

We complete the table like this to obtain other total values:

$\qquad\qquad\qquad\qquad\qquad\text{Shock resistance}\\\text{Scratch resistence}\left[\begin{array}{cccc}&\text{high}&\text{low}&\text{total}\\\text{high}&70&9&79\\\text{low}&16&5&21\\\text{total}&86&14&100\end{array}\right]$

With this information, and taking into account that the values presented are frequencies, to obtain the probability, each one must be divided into the total number of objects and multiply by 100, for this case as 100 objects, the frequency is the same percentage or probability .

Answer

a) The probability that, when selecting a random disk, its scratch resistance is high and its shock resistance is high is 70%, since this is the value that corresponds to the intersection of both variables in the table.

b) the probability that, when selecting a random disk, its resistance to scratches is high or that its resistance to impacts is high is 95% because the probability that its resistance to scratches is high is 79 % and the probability that its impact resistance is high is 86%, as one or the other requests, this is the sum of both minus the intersection, that is 79% + 86% -70% = 95%

c) the two events described are not mutually exclusive, that is, they cannot pass through, since the table informs us that of the analyzed discs 70, these two characteristics possessed, high shock resistance and high scratch resistance

8 0

3 years ago