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polet [3.4K]
3 years ago
13

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

Mathematics
1 answer:
Fynjy0 [20]3 years ago
3 0
For a perfect square

b² = 4*a*c

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

a = 1,    c = 16

<span>b² = 4*a*c
</span>
<span>b² = 4*1*16
</span>
<span>b² = 64
</span>
b = √64

b = 8

The value of b = 8.
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Answer:

8710 units

Step-by-step explanation:

<em>Step 1: Write all the data</em>

Fixed cost: $9000

Average variable cost: 9.3 per unit

Total cost: 90,000

Total units: x

<em>Step 2: Find the total variable cost</em>

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

<em>Step 3: Make the formula for finding x</em>

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.<br><br> 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<br><br> 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

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answer

c=4

Hope this helps

4 0
3 years ago
Independent Practice
choli [55]

Answer:

A.

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Step-by-step explanation:

6 0
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3 years ago
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