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3 years ago

Is this equation in standard form? 3xy+ y2=4

Mathematics

2 answers:

ad-work [718]3 years ago

7 0

Answer:

standard form is {Ax+By=c}

as mentioned above the given equation is not in {Ax+By=c}..

hence it's not in standard form

maksim [4K]3 years ago

7 0

Answer:

ax+by=c so no

Step-by-step explanation:

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Consider the population of four juvenile condors. Their weights in pounds are : 4, 5, 7, 12 (a) Let x be the weight of a juvenil

creativ13 [48]

Answer:

a) 4, 5, 7, 12

b) 7

c) 4.5, 6.5, 8, 6, 8.5, 9.5

d) 7.167

Step-by-step explanation:

We are given the following in the question:

4, 5, 7, 12

a) unique values for x

4, 5, 7, 12

b) mean of the population

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$\mu =\displaystyle\frac{28}{4} = 7$

c) sampling distribution for samples of size 2

Sample size, n = 2

Possible samples of size 2 are (4,5),(4,7),(4,12),(5,7),(5,12),(7,12)

Sample means are:

$\bar{x_1} = \dfrac{4+5}{2} = 4.5\\\\\bar{x_2} = \dfrac{4+7}{2} = 6.5\\\\\bar{x_3} = \dfrac{4+12}{2} = 8\\\\\bar{x_4} = \dfrac{5+7}{2} = 6\\\\\bar{x_5} = \dfrac{5+12}{2} = 8.5\\\\\bar{x_6} = \dfrac{7+12}{2} = 9.5$

Thus, the list is 4.5, 6.5, 8, 6, 8.5, 9.5

d) mean of the sampling distribution

$\bar{x} = \dfrac{4.5 + 6.5 + 8+ 6 + 8.5+ 9.5}{6} = \dfrac{43}{6} = 7.167$

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3 years ago

The sum of two numbers is 256. When we divide the larger number by the smaller number, the quotient is 8 and the remainder is 13

EleoNora [17]

Answer:

The numbers are 229 and 27

Step-by-step explanation:

Let the numbers be x and y, where x>y.

Their sum is 256, so we have $x+y=256$ .

When we divide the larger number by the smaller number, the quotient is 8 and the remainder is 13.

$x=8y+13$

We substitute the second equation into the first equation to get:

$8y+13+y=256$ .

$8y+y=256-13$

$9y=243$

$x=27$

$x=8*27+13$

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suter [353]

Answer:

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