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3 years ago

What value of b makes the polynomial x2+bc+16 a perfect square

1 answer:

3 0

For a perfect square

b² = 4*a*c

Comparing ax² + bx + c = 0 to x² + bx + 16

a = 1, c = 16

b² = 4*a*c

b² = 4*1*16

b² = 64

b = √64

b = 8

The value of b = 8.

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A plumbing supply company has fixed costs of $9,000 per month and average variable costs of $9.30 per unit manufactured. The com

nekit [7.7K]

Answer:

8710 units

Step-by-step explanation:

Step 1: Write all the data

Fixed cost: $9000

Average variable cost: 9.3 per unit

Total cost: 90,000

Total units: x

Step 2: Find the total variable cost

Average variable cost is per unit so it has to be multiplied by the number of units to find the total variable cost.

Total variable cost = average variable cost per unit x number of units

Total variable cost = 9.3x

Step 3: Make the formula for finding x

Total cost = total fixed cost + total variable cost

90,000 = 9000 + 9.3x

81000 = 9.3x

x = 8709.67

Rounded off to 8710 units

3 0

3 years ago

Can someone help me with this? Plz. Solve the quadratic equation 2x^2-4x-1=0

Mila [183]

You have to use the quadratic formula to solve this. The zeros of this quadratic are 2 + sqrt2/2 and 2 - sqrt2/2, which in "real" numbers is 1.707 and .2928

6 0

3 years ago

10 = 3c − 2 c = what

creativ13 [48]

Answer:

Step-by-step explanation:

Here you go mate

Step 1

10=3c-2 Equation/Question

Step 2

10=3c-2 Simplify

10=3c-2

Step 3

10=3c-2 Add +2

3c=12

Step 4

3c=12 Then you divide the exponents by 3

answer

c=4

Hope this helps

4 0

3 years ago

Independent Practice

choli [55]

Answer:

|19 | = |–19|

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Divide (27x 4 - 18x 3 + 9x 2) ÷ 3x

guajiro [1.7K]

The correct answer is x =24

7 0

3 years ago