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3 years ago

10

PLEASE HELP I GIVE BRAINIEST

1 answer:

Stolb23 [73]3 years ago

7 0

The total number of all shirts of all sizes and colors is:
Total = 32 + 49 + 28 + 12 + 36 + 20 + 20 + 42 + 23 = 262

The number of large blue shirts sold is: 20

p(large blue shirt) = 20/262 = 0.0763

Answer: 8%

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Solve the equation: k^2+5k+13=0

mr_godi [17]

Step-by-step explanation:

k² + 5k + 13 = 0

Using the quadratic formula which is

$x = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac } }{2a} \\$

From the question

a = 1 , b = 5 , c = 13

So we have

$k = \frac{ - 5 \pm \sqrt{ {5}^{2} - 4(1)(13) } }{2(1)} \\ = \frac{ - 5 \pm \sqrt{25 - 52} }{2} \\ = \frac{ - 5 \pm \sqrt{ - 27} }{2} \: \: \: \: \: \: \\ = \frac{ - 5 \pm3 \sqrt{3} \: i}{2} \: \: \: \: \: \:$

<u>Separate the solutions</u>

$k_1 = \frac{ - 5 + 3 \sqrt{3} \: i }{2} \: \: \: \: or \\ k_2 = \frac{ - 5 - 3 \sqrt{3} \: i}{2}$

The equation has complex roots

<u>Separate the real and imaginary parts</u>

We have the final answer as

$k_1 = - \frac{5}{2} + \frac{3 \sqrt{3} }{2} \: i \: \: \: \: or \\ k_2 = - \frac{5}{2} - \frac{3 \sqrt{3} }{2} \: i$

Hope this helps you

8 0

3 years ago

How do I solve this<br> I’m very confused

nadya68 [22]

First Column, -x and 5 third column, -x and 2

4 0

3 years ago

Read 2 more answers

6(x-2=4(x+3) what does x equal

Delicious77 [7]

Hey mate here is your answer.

➛ 6(x-2) = 4(x+3)

➛ 6x-12 = 4x + 12

➛ 6x - 4x = 12 + 12

➛ 2x = 24

➛ x = $\frac{24}{2}$

⛬ x = 12

4 0

4 years ago

At the farm, corn costs $2.50 per pound. How much would 3 1/2 pounds of corn cost? Write your answer in dollars and cents.

igomit [66]

Multiply price per pound by total pounds:

2.50 x 3.5 = 8.75

Total cost = $8.75

4 0

3 years ago

Read 2 more answers

PLEASE HELP WITH THIS(INORDER FOR ME TO GIVE YOU A BRIANLIST,EXPLAIN HOW U GOT IT)(will give brainlist and thanks)(Find the peri

tamaranim1 [39]

Answer:

7x+10 cm

Step-by-step explanation:

To find the perimeter add up all the sides

There are 5 sides

3x+ 5+ 2x+2x+5

Combine like terms

3x+2x+2x +5+5

7x + 10

The perimeter is 7x+10 cm

7 0

3 years ago