3 years ago

What represents 60=5 x 12?

Mathematics

1 answer:

sergij07 [2.7K]3 years ago

3 0

Answer:

multiplication

Step-by-step explanation:

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The annual salaries of all employees at a financial company are normally distributed with a mean of $34,000 and a standard devia

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$z=\frac{X-\mu}{\sigma}=\frac{54000-34000}{4000}=5$

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After a bride has interviewed 7 DJs to play at her wedding, her fiance tells her she needs to narrow it down to 4 DJs. In how ma

Alex17521 [72]

Answer:

840

Step-by-step explanation:

Given

$DJs = 7$

$To\ pick = 4$

Required

Determine the number of rankings

The term "ranking" as used in this question implies permutation and the required is calculated using:

$^nP_r = \frac{n!}{(n-r)!}$

Where

$n = 7$

$r = 4$

So:

$^nP_r = \frac{n!}{(n-r)!}$

$^7P_4 = \frac{7!}{(7-4)!}$

$^7P_4 = \frac{7!}{3!}$

$^7P_4 = \frac{7 * 6 * 5 * 4 * 3!}{3!}$

$^7P_4 = 7 * 6 * 5 * 4$

$^7P_4 = 840$

<em>Hence, number of ranking is 840</em>

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3 years ago

Graph y > x^2 - 5. Click on the graph until the correct one appears.

kenny6666 [7]

$y=x^2\\\\for\ x=\pm2\to y=(\pm2)^2=4\to(-2;\ 4);\ (2;\ 4)\\\\for\ x=\pm1\to y=(\pm1)^2=1\to (-1;\ 1);\ (1;\ 1)\\\\for\ x=0\to y=0^2=0\to (0;\ 0)$

Shift the graph of the function y = x², 5 units down /look at the picture #1/.

$y > x^2-5$ /look at the picture #2/ - your answer

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Without using a calcuator, determine the number of real zeros of the function f(x)=x^3+4x^2+x-6

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Step-by-step explanation:

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3 years ago

A farmer has 500 acres to plant acres of corn, x, and acres of cotton, y. Corn costs $215 per acre to produce, and cotton costs

hodyreva [135]

Answer:

x + y = 500

215x + 615y = 187,500

Step-by-step explanation:

The first equation can show the amount of land. The farmer has 500 acres to plant corn, x, and cotton, y.

x + y = 500

The second equation can show the cost. The farmer has $187,500 to invest when corn costs $215 per acre and cotton costs $615 per acre.

215x + 615y = 187,500

The system of equations is

x + y = 500

215x + 615y = 187,500

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3 years ago