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Delvig [45]
3 years ago
5

Find the value of "k", given that one solution of the equation 2x² kx + 12 = 0 is is -3/2

Mathematics
1 answer:
Ksivusya [100]3 years ago
5 0

Answer:

Is there a picture to it.

that will me helpful for me

Step-by-step explanation:

Willing to help

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In a certain clothing store,6 shirts and 3 ties cost $79.50 ,and 3 shirts and 2 ties cost $41. determine the cost of each shirt.
Komok [63]

Answer:

Each shirt cost $12

Step-by-step explanation:

First, we have to interpret this question and turn each to an equation, letting shirts represent the letter s and ties represent the letter t.

6 shirts and 3 ties cost $79.50 would be interpreted to 6s+3t=79.5 ,and 3 shirts and 2 ties cost $41 would be interpreted to 3s+2t=41

Hence we have two equations, and we solve them simultaneously.

6s+3t=79.5 (Equation 1)

3s+2t=41 (Equation 2)

We can either use the substitution method or the elimination method but for the sake of this question, we use the Elimination method.

6s+3t=79.5 (Equation 1)

3s+2t=41 (Equation 2)

We multiply equation 1 by 2 and we multiply equation 2 by 3, I'm prefer to eliminate the

2(6s+3t=79.5)

12s+6t=159 Equation 3

3(3s+2t=41)

9s+6t=123 Equation 4

We subtract equation 4 from equation 3.

12s+6t=159

9s+6t=123

12s-9s=3s

6t-6t=0

159-123=36

We therefore have

3s=36

Divide both sides by 3

s=36/3

s=12

One shirt cost $12

3 0
3 years ago
What is the answer for 0.025×10=
Mashutka [201]
The answer would be 0.25... when multiplying by 10, shift the decimal place one to the right.
8 0
2 years ago
Read 2 more answers
Rounded to the thousands place :) thank you!! <br><br> 5e^3x – 4 = 31
Lerok [7]

Step-by-step explanation:

Add 4 to both sides: 5e^3x = 35, or

7 0
3 years ago
What is the slope intercept for the line below?
Levart [38]

Answer:

I can't see the picture

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Please help. A rectangle's length and width are in a ratio of 7:3. The area is 84 square feet. What are the
GalinKa [24]

Answer:

length = 14 feet

width = 6 feet

Step-by-step explanation:

A = 84 feet square

ratio of length and width = 7 : 3

total ratio of length and width 10 = a

length = (7/10)a

width = (3/10)a

A = length x width = (7/10)a x (3/10)a = (21/100)a² = 84

a² = 84 x 100 : 21 = 400

a = 20 feet

length = 7/10 x 20 = 14 feet

width = 3/10 x 20 = 6 feet

8 0
3 years ago
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