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3 years ago

x−2y+3z=8, 3y+z=12, −2x+2z=−4 Enter your answer, in the form (x,y,z), in the boxes in simplest terms.

Mathematics

1 answer:

Galina-37 [17]3 years ago

4 0

Answer:

you dey mad go give your teacher make them solve am

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Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x??

azamat

$x^2-2x+20=0\implies D=b^2-4ac$ .

There are no real solutions to the quadratic equation.

Hope this helps.

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3 years ago

What is the slope of the line passing through the points (1, 2) and (5, 4)? A .−2 B.12 C.1 D.2

LekaFEV [45]

Answer:

B, 1/2

Step-by-step explanation:

The equation for slope of line is $\frac{y_{1}-y_{2}}{x_{1}-x_{2}} = \frac{4-2}{5-1}= \frac{2}{4} = \frac{1}{2} , B$

<em>I hope this helps! :)</em>

3 0

2 years ago

Bill Gates wants to construct an in ground swimming pool for his dog. he wants it's length to be 8 yards shorter than twice it's

rosijanka [135]

Please find the attached file for a better understanding of the solution provided here:

ABCD is the swimming pool and PQRS is the extent of the swimming pool plus the concrete walkway which is 6 yards wide.

Now, we know that the length is 8 yards shorter than twice it's width. Thus,

l=2w-8

Now the area of the region, A'B'QP will be: length x width. Now, the length here is l+6+6=2w-8+12=2w+4 and width is 6.

Thus, area of the region A'B'QP is (2w+4)x6=12w+24

Likewise, the area of the region D'C'RS will similarly be 12w+24 too.

Now, the area of the region BB'C'C will be 6 x w=6w

Similarly, the area of the region AA'D'D will be 6 x w=6w

Therefore, the total area of the walk way will be:

$2(12w+24)+2\times 6w=570$

$24w+48+12w=570$

$36w+48=570$

$\therefore w=14.5$

Therefore, length, l will be:

$l=2w-8=2\times 14.5-8=29-8=21$

Therefore, the dimensions of the swimming pool are:

Length, l= 21 yards and Width, w=14.5 yards

6 0

3 years ago

Read 2 more answers

Help!- BRAINLIEST..........

kramer

Answer:

a is -8 4

b is 5 -9

c is 2 6

Step-by-step explanation:

Slope = (y2 - y1)/(x2 - x1) Slope = rise over run. You can pick any two points on a line to calculate the slope. You can double check your answer by trying different points on the line. If the line is going up, from left to right, the slope is positive.

3 0

3 years ago

An experiment has a single factor with eight groups and five values in each group. a. How many degrees of freedom are there in d

pishuonlain [190]

Answer:

A) 7

B) 32

C) 39

Step-by-step explanation:

Degree of freedom is a means of checking how many values that are free to vary, while using a statistical method.

a) since the experiment has a single factor with eight critical values. Therefore;

C - F = degree of freedom among the group variation

8 - 1 = 7

b) The degree of freedom can be calculated, if the number of data; Therefore, number of data is;

N = 8 × 5 = 40

Then the degree of freedom in determining within group variation,

N - C Therefore;

40 - 8 = 32

C) The degree of freedom in determining the total variation is,

N - 1

40 - 1 = 39

6 0

3 years ago