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Elodia [21]
3 years ago
7

Complete the square for 5x^2-30x=5 brainly

Mathematics
2 answers:
Amanda [17]3 years ago
8 0

Answer:

(x-3)^2=10

Step-by-step explanation:

Stella [2.4K]3 years ago
5 0

Answer:

5(x-3)(x+2)=0

Step-by-step explanation:

5x^2-30x=5

5x^2-30x-5=0

5(x^2-6x-1)=0

5(x-3)(x+2)=0

You might be interested in
The sum of reciprocals of rehman’s ages 3 years ago and 5 years from now is 1/3. Find his present age
Afina-wow [57]

Answer:

His age is 7 years.

Step-by-step explanation:

Let Rehman's  present age be x years.

1 / (x - 3) + 1 /(x + 5) = 1/3

Multiply through by the LCD 3(x - 3)(x + 5):

3(x + 5) + 3(x - 3) = (x + 5)(x - 3)

3x + 15 + 3x - 9 = x^2 + 2x - 15

x^2 + 2x - 6x - 30 + 9 = 0

x^2 - 4x - 21 = 0

(x - 7)(x + 3) = 0

x = 7  (answer).

6 0
3 years ago
Rachel drove 756 miles in 12 hours.<br> At the same rate, how many miles would she drive in 8 hours?
kvv77 [185]

Answer:

504 miles

Step-by-step explanation:

you would do 756÷12 which equals 63.... For every hour that you drive its 63 miles. Then you do 63×8 to get 504

4 0
3 years ago
at a soccer match for every goal team a score team the score 3 goals the ratio of the number of goals scored by team to the numb
faust18 [17]

Answer:

1 : 3

Step-by-step explanation:

Given that :

For every goal TEAM A score ; TEAM B scores 3

Expressing the above as a ratio in the form:

Team A : Team B

Team A = 1 ; Team B = 3

1 : 3

Hence, the ratio is in the form 1 : 3

6 0
3 years ago
he numbers of regular season wins for 10 football teams in a given season are given below. Determine the​ range, mean,​ variance
Naddik [55]

Answer:

Range = 13

Mean = 8.4

Variance= 21.24

Standard deviation= 4.61

Step-by-step explanation:

2​, 10​, 15​, 3​, 13​, 9​, 14​, 7​, 2​, 9

For the range

Let the set of data be arranged inn ascending order

Range= higehest value- lowest value

Range = 15-2

Range= 13

For the mean

Mean = (2+2+3+7+9+9+10+13+14+15)/10

Mean = 84/10

Mean = 8.4

For variance

Variance=((2-8.4)²+(2-8.4)²+(3-8.4)²+(7-8.4)²+(9-8.4)²+(9-8.4)²+(10-8.4)²+(13-8.4)²+(14-8.4)²+(15-8.4)²)/10

Variance= (40.96+40.96+29.16+1.96+0.36+0.36+2.56+21.16+31.36+43.56)/10

Variance= 212.4/10

Variance= 21.24

Standard deviation= √variance

Standard deviation= √21.24

Standard deviation= 4.609

Approximately = 4.61

6 0
3 years ago
Question 12(Multiple Choice Worth 1 points)
svlad2 [7]

Answer: The answer is the square root of 5.

Step-by-step explanation:

6 0
3 years ago
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