3 years ago

Solve for x in the equation 3 x squared minus 18 x + 5 = 47.

Mathematics

1 answer:

Rudik [331]3 years ago

5 0

Answer:

x = -1.796, 7.796

Step-by-step explanation:

3x² - 18x + 5 = 47

3x² - 18x - 42 = 0

use quadratic equation

x = -1.796, 7.796

You might be interested in

E-4 - 5 - 6 - → The perimeter of a rectangle is 425 yards. The length and width of the rectangle are each multiplied by 6. What

Alex73 [517]

Answer:

2550yards

Step-by-step explanation:

Perimeter of a rectangle = 2L + 2W

L is the length

W is the width

If perimeter of a rectangle is 425 yards, then;

425 = 2L + 2W

425 = 2(L+W)

L+W = 425/2 .... 1

If the length and width of the rectangle are each multiplied by 6

P = 6(2L) + 2(2W)

P = 12L + 12W

P = 12(L+W) .... 2

Substitute 1 into 2

P = 12(425/2)

P = 6*425

P = 2550yd

Hence the perimeter of new triangle is 2550yards

4 0

2 years ago

Read 2 more answers

Seven customers enter a clothing store and are observed to determine if they will make a purchase. The store owner states that t

blondinia [14]

Answer: Mean = 5.25

Variance = 1.3125

Standard deviation = 1.456

Step-by-step explanation:

The mean and variance of a binomial distribution with parameters n (number of trials) and p ( the probability of getting success in each trial) is given by :-

$\text{Mean}=np\\\\\text{Variance}=np(1-p)$

Given : The total number of enter a clothing store : n=7

The probability of a customer making a purchase= 0.75

Now,

$\text{Mean}=7(0.75)=5.25\\\\\text{Variance}=7(0.75)(0.25)=1.3125\\\\\Rightarrow\ \text{Standard deviation}=\sqrt{1.3125}=1.14564392374\approx1.1456$

3 0

3 years ago

Im not sure if there right or not

alina1380 [7]

They are both correct.

7 0

2 years ago

Help pls I will give brainliest! 2

Nina [5.8K]

Answer:

rjhghshhvxzd workout a

Step-by-step explanation:

1.351

2.729

6 0

2 years ago

Read 2 more answers

what is 55 x 20. akjdhjhegrehgfrejhgtuketerkgtrehjtgehjrgtjerhgthejrgtjehtgjrhetgrehjtgrejhtgrehjtgjrehtgrjhtgrejhtgejhrtgrejhgt

11111nata11111 [884]

1,100 hope this helped

6 0

3 years ago