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3 years ago

15

The Square of a positive number is 12 more than 4 times the number. Find the number. [ Only an algebraic solution will be accept

ed]

1 answer:

Andreas93 [3]3 years ago

6 0

X^2=4x+12
x^2-4x-12=0
(x+2)(x-6)=0
x=6 is the answer

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Kyle received the following course grades for 10 (three-credit) courses during his freshman year:

timofeeve [1]

Answer:

(a) The average grade point is 2.5.

(b) The relative frequency table is show below.

(c) The mean of the relative frequency distribution is 0.3333.

Step-by-step explanation:

The given data set is

4, 4, 4, 3, 3, 3, 1, 1, 1, 1

(a)

The average grade point is

$Average=\frac{\sum x}{n}$

$Average=\frac{4+4+4+3+3+3+1+1+1+1}{10}$

$Average=2.5$

Therefore the average grade point is 2.5.

(b)

$\text{Relative frequency}=\frac{\text{Frequency of number}}{\text{Total frequency}}$

The relative frequency table is show below:

x f Relative frequency

4 3 $\frac{3}{10}=0.3$

3 3 $\frac{3}{10}=0.3$

1 4 $\frac{4}{10}=0.4$

(c)

Mean of the relative frequency distribution is

$Average=\frac{0.3+0.3+0.4}{3}$

$Average=0.3333$

Therefore the mean of the relative frequency distribution is 0.3333.

4 0

3 years ago

Determine the x-intercepts and y-intercepts for the following equation:<br> –5x+2y- 10 = 0

Reptile [31]

Answer:

x=2/5 y−2

Step-by-step explanation:

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3 years ago

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A television costs $450. During a special sale, it’s marked 1\3 off. What’s the sales price of the tv?

Darina [25.2K]

Answer:

150

Step-by-step explanation:

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3 years ago

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Subract the entrance cost from $35 and then divide what’s left to see how many games he must play

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Adrian are 3 ani, iar tatăl lui are 34 de ani. Peste câți ani Adrian va fi de două ori mai tânăr decât tatăl său?

katrin [286]

Answer:

27 years

Step-by-step explanation:

Given that :

Adrian's age = 3

Father's age = 34

In how many years will Adrian be twice as young as his father?

Let the number of years = x

2(3 + x) = 34 + x

6 + 2x = 34 + x

2x - x = 34 - 6

x = 28

3 0

3 years ago