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2 years ago

Write an expression that represents 2 more than 4 times a number

2 answers:

4 0

Go backwards with the problem. 4 times a number would mean 4x. 2 more means you're adding 2. so your answer should be 4x+2

Anit [1.1K]2 years ago

3 0

6 more than 5 times a number
5x+6

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What are the solutions of the equation? 0=x^2-2x-24

Brrunno [24]

The solutions are: x = 6; x = -4.

Explanation: The given equation is:
x^2 -2x -24 = 0

x^2 -6x + 4x - 24 = 0
x(x-6) + 4(x-6) = 0
(x-6)(x+4) = 0

=> x = 6
=> x = -4

Hence the solutions are: x = 6; x = -4.

4 0

2 years ago

24 is what percent of 800?? A little help for my sister ???????

patriot [66]

24 is 3% of 800.
100%/x%=800/24
(100/x)*x=(800/24)*x
100=33.3x
x=3

5 0

2 years ago

Solve the missing tables.

otez555 [7]

Answer:

Step-by-step explanation:

1 4(1) + 2 6

3 4(3) + 2 14

6 4(6) + 2 26

0 0 + 3 3

2 2 + 3 5

4 4 + 3 7

1 1 - 1  0

3 3 - 1 2

5 5 - 1 4

3 0

2 years ago

The taxi and takeoff time for commercial jets is a random variable x with a mean of 8.4 minutes and a standard deviation of 3.5

Lorico [155]

Answer:

0.6672 is the required probability.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 8.4 minutes

Standard Deviation, σ = 3.5 minutes

We are given that the distribution of distribution of taxi and takeoff times is a bell shaped distribution that is a normal distribution.

According to central limit theorem the sum measurement of n is normal with mean $\mu$ and standard deviation $\sigma\sqrt{n}$

Sample size, n = 37

Standard Deviation =

$=\sigma\times \sqrt{n} = 3.5\times \sqrt{37}=21.28$

P(taxi and takeoff time will be less than 320 minutes)

$P( \sum x < 320) = P( z < \displaystyle\frac{320 - 37(8.4)}{21.28}) = P(z < 0.4323)$

Calculation the value from standard normal z table, we have,

$P(\sum x < 320) =0.6672 = 66.72\%$

0.6672 is the probability that for 37 jets on a given runway, total taxi and takeoff time will be less than 320 minutes.

7 0

2 years ago

Can someone help me asap!

lilavasa [31]

Answer:

B negative

Step-by-step explanation:

use real numbers?

n is +9

m is -11

m/n * (-m*n^2)

-11/9 * (11*81)

-11/1 * (11*9)

-11 * 99

-1089

6 0

1 year ago