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3 years ago

PLZ HELP IM TIMEDDDDDDDDDDDDD Which values of a, b, and c correctly complete the division?

Mathematics

1 answer:

boyakko [2]3 years ago

7 0

Answer is:

a=4, b=6 c=5

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Solve x and y intercept 5x-6y=-14 and x+2y=10

Butoxors [25]

Answer:

x= 5.5 y=2.25

Step-by-step explanation:

5(10 - 2y) -6y=14

50-10y-6y=14

50- 16y=14

-16y=-36

divide by negtivve # to get positive #

y=2.25

substiue

x+ 2(2.25) =10

x+4.5=10

x=5.5

8 0

3 years ago

Can you guys help please im so confused

marissa [1.9K]

Answer:

a) see below

b) 40x20 meters

Step-by-step explanation:

Write down what you know:

- The area of the enclosure is length*width, so

$A = x \cdot y$

- The length of the fencing is 80 meters, so

$2y + x = 80$

Now we have to combine these two equations above, and get rid of y in the process.

First rewrite the second as:

$y = 40 - \frac12 x$

Then substitute for y in the first:

$A = x (40 - \frac12 x) = 40x - \frac12x^2$

b) To maximize A, find the zero of the first derivative:

$A'(x) = 40 - x = 0 \implies x=40$

So y = (80-40)/2 = 20 meters.

8 0

3 years ago

Can someone help I gotta do this quick.

zubka84 [21]

Answer:

Domain 7 doent belong bc it is a y value

Range 10 doesnt belong bc it is a x value

Step-by-step explanation:

4 0

3 years ago

Two sides of a triangle have lengths 11 and 18. Write an inequality to represent the possible lengths for the third side, x.

KatRina [158]

<span>Side inequality of triangle states that the sum of any two sides of a triangle should be greater than the third side so the sum of two sides

In this case, 11 + 18 = 29 > 3rd side So 29 > 3rd side or we can say 3rd side < 29

Also, the third side cannot be smaller than the difference of the given two sides so the third side has to be greater than 18-11 = 7 so 3rd side > 7 so if length of 3rd side is represented by x, then 7 < x < 29</span>

3 0

3 years ago

Read 2 more answers

Suppose the line of best fit is being found for some data points that have an r-value of 0.793. If the standard deviation of the

alexandr1967 [171]

Answer: 0.393

Explanation: If the given quantities are r-value (or Pearson's coefficient) and the standard deviations of x and y coordinates, we'll use the following formula for slope:

$m = \frac{rs_y}{s_x} 

$

where:
m = slope of the best fit line
r = r-value = 0.793
$s_x$ = standard deviation of x-coordinates = <span>5.591
</span> $s_y$ = standard deviation of y-coordinates = 2.772

So, the slope is calculated as follows:

$m = \frac{rs_y}{s_x}
\\ = \frac{(0.793)(2.772)}{5.591}
\\ \boxed{m \approx 0.393}$

Hence, the slope in 3 decimal places is 0.393.

6 0

3 years ago