HELP ME PLZZZZZZZ WHICH OF THE FOLLOWING STATEMENT <br> S ABOUT RATIONAL NUMBERS IS NOT CORRECT

Find the x and y intercept of y= -2(x-3)^2+4

Neko [114]

Y intercept occurs when x = o so it is -2(0-3) + 4 = -2

x intercepts:-

-2(x - 3)^2 + 4 = 0

(x - 3)^2 = -4/-2 = 2

x - 3 = +/- sqrt2

x = 3 + sqrt2 and 3- sqrt2

6 0

4 years ago

Pioneer company has given an aptitude test to 71 potential job applicants. The test score had an average of 81 and a standard de

Agata [3.3K]

Answer:

Follows are the solution to the given points:

Step-by-step explanation:

In point A:

$\to df = n - 1 = 71-1= 70$

In point B:

$\to t = \frac{(x -X)}{s} = \frac{(93-81)}{8} = \frac{12}{8}= 1.5$

In point C:

For df = 70, the top 5% critical t score

tcrit = 1.666914479

Thus,

$\to 1.666914479 = \frac{(x - 81)}{8}\\\\\to 1.666914479 \times 8 = (x - 81)\\\\\to 13.335315832 = (x - 81)\\\\\to 13.335315832 +81 =x \\\\\to x= 94.335315832$

In point D:

For df = 70, the top 5% critical t score

tcrit = -1.666914479

$\to -1.666914479 = \frac{(x - 81)}{8}\\\\\to -1.666914479 \times 8= (x - 81)\\\\\to -13.335315832= (x - 81)\\\\\to -13.335315832+81 = x \\\\\to x = 67.664684168\\\\$

In point E:

The lower cutoff is 0.10 in the center, which would be around 80 %. The critical point therefore is

tcrit = -1.293762898

$\to -1.293762898 = \frac{(x-81)}{8}\\\\\to -1.293762898 \times 8= (x-81) \\\\\to -1.293762898 \times 8= (x-81) \\\\\to -10.350103184=x-81\\\\\to -10.350103184+81=x\\\\\to x=70.649896816$

In point F:

The lower cutoff is 0.90 in the center, which would be around 80 %. The critical point therefore is

tcrit = 1.293762898

$\to 1.293762898 = \frac{(x-81)}{8}\\\\\to 1.293762898 \times 8= x-81\\\\\to 10.350103184 =x-81\\\\\to 10.350103184 +81=x\\\\\to x = 91.350103184\\$

5 0

3 years ago

Solve: 4y - 6 = 2y + 8

VLD [36.1K]

Answer:

y = 7

Step-by-step explanation:

Given

4y - 6 = 2y + 8 ( subtract 2y from both sides )

2y - 6 = 8 ( add 6 to both sides )

2y = 14 ( divide both sides by 2 )

y = 7

8 0

3 years ago

the sides of a vegetable garden in the shape of a right triangle are in the ratio of 3:4:5. if the perimeter is 96 feet, what is

pishuonlain [190]

Answer:

The shortest side has length 24 ft

Step-by-step explanation:

Try this: 3x + 4x + 5x =96 ft, or

12x = 96 ft

Then x = (96 ft) / 12, or x = 8

Multiplying this factor 8 by 3, we get 24. The shortest side has length 24 ft.

The middle-length side is 4(8), or 32.

The longest side is 5(8), or 40.

Check: Do 40 and 32 and 24 add up to 96 ft?

do 72 and 24 add up to 96 ft?

Yes.

7 0

4 years ago

(PLEASEEE HELP ASAP!!) The Sugar Sweet Company will choose from two companies to transport Its sugar to market. The first compan

LiRa [457]

Answer:

Q1:14 Q2:8903.5

Step-by-step explanation:

I find that using equations to solve problems makes it a lot easier.

The first company's equation would be y=5743+225.75x because 5743 is the set fee and 225.75 is for each ton of sugar. The second company would be y=7500+100.25x for the same reasons.

So we need to find a value of x that works for each company and a value of y that is the same for the cost.

Now we combine them.

Solve for x:

5743+225.75x=7500+100.25x

-5743 -5743

225.75x= 1757+100.25x

-100.25x -100.25x

125.50x=1757

/125.5 /125.5

x=14

Therefore, for Q1, the answer is 14.

Now we solve for y by substituting x for 14.

5743+225.75(14)

5743+3160.5

8903.5

We can also check this with the other equation

7500+100.25(14)

7500+1403.5

8903.5

So therefore, the answer to Q2 would be 8903.5.

8 0

3 years ago

HELP ME PLZZZZZZZ WHICH OF THE FOLLOWING STATEMENT S ABOUT RATIONAL NUMBERS IS NOT CORRECT