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docker41 [41]
3 years ago
7

How do you solve simultaneous equations

Mathematics
1 answer:
Sladkaya [172]3 years ago
7 0

Step 1: Multiply each equation by a suitable number so that the two equations have the same leading coefficient.

Step 2: Subtract the second equation from the first.

Step 3: Solve this new equation for y.

Step 4: Substitute y = 2 into either Equation 1 or Equation 2 above and solve for x.

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4 m<br> 3 m<br> What is the length of the hypotenuse?
wlad13 [49]

Answer:

H^2 = 4^2 + 3^2

H^2 = 16 + 9

H^2 = 25

H = √25

H = 5

5 0
3 years ago
Point P is located at (-2, 7), and point R is located at (1, 0). find the y value for the point Q that is located 2/3 the distan
Dominik [7]

Just did this one.

Answer: 7/3 or about 2.3, choice (d).



Step-by-step explanation:


R-P= (3,-7). the displacement vector.


P+x(R-P) moves to x times distance between


P+(R-P) = R moves to 100% of the distance.


Q = P+2/3(R-P)


= (-2,7)+2/3(3,-7)


= (-2,7)+(2,-14/3)


= (0,7-14/3)


= (0,7/3)


= (0,2.3333...)


Read more on Brainly.com - brainly.com/question/11869584#readmore

7 0
3 years ago
Find the ratio of the following geometric sequences
shepuryov [24]

Answer:

A: 2

B: -1/3

Step-by-step explanation:

A: We are looking for the common ratio between the terms of the sequence, which is essentially what you are multiplying by to get from one term to the next. To find this, we just have to divide the second term by the first term.

-4 / -2 = 2, therefore our common ratio is 2.

We can check this by continuing to multiply the next terms by 2 - -4 x 2 = -8, -8 x 2 = -16, so the pattern works.

B: For B, we will do exactly the same method as before:  3/-9 = -1/3, so our multiplier is -1/3.

To check: 3 x -1/3 = -1, and -1 x -1/3 = 1/3, which both follow our rule.

Hope this helps! Let me know if you have any questions.

4 0
3 years ago
A _________________ is the probability of obtaining a sample statistic that is at least as extreme as the original sample statis
zubka84 [21]

Answer:

p-value

Step-by-step explanation:

When performing any hypothesis test the first step is to formulate Null Hypothesis and Alternate Hypothesis. Next we calculate the test statistic and based on the test statistic we calculate a p-value.

This p-value gives the probability of obtaining the test result which is as atleast as extreme as our original test result, if the Null hypothesis is assumed to be true.

So, this means, the null hypothesis is assumed to be true and the statistical test is performed which gives a p-value. p-value gives a measure in terms of probability that how true is the result.

A higher p-value means probability occurrence of hypothesized value of Null Hypothesis is larger, so we accept the Null Hypothesis. A small p-value indicates the probability of occurrence of hypothesized value is  very small, and, therefore, the null hypothesis must be rejected.

6 0
3 years ago
What is the period of y=-3cos(1/4x)
iren2701 [21]

Answer:

Step-by-step explanation:

The standard form is y = a cos(bx + c) + d

the amplitude = |a| = 3

The period = \frac{2\pi }{b} = \frac{2\pi }{\frac{1}{4} } = 8\pi

5 0
3 years ago
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