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Ivenika [448]
3 years ago
14

Which quadratic equation defines the function that has zeros at -8 and 6?

Mathematics
1 answer:
Citrus2011 [14]3 years ago
7 0
Answer is D.) Hope I could help have a good day
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19. The bases of a trapezoid are 8 and 22 and the trapezoid's area is 135. Find the height
julia-pushkina [17]

Answer: 9

Step-by-step explanation:

A=(a+b)/2 *h

135= 30/2* h

135= 15 * h

135/15= h

9=h

8 0
3 years ago
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Factor 7(x − 3)2 − 4(x − 3) − 3 completely.
Nezavi [6.7K]
7(x-3)^2-4(x-3)-3\\\\substitute\ t=x-3,\ then\ we\ have\\\\7t^2-4t-3\\\\a=7;\ b=-4;\ c=-3\\\\\Delta=b^2-4ac\\\\\Delta=(-4)^2-4\cdot7\cdot(-3)=16+84=100\\\\t_1=\dfrac{-b-\sqrt\Delta}{2a};\ t_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{100}=10\\\\t_1=\dfrac{-(-4)-10}{2\cdot7}=\dfrac{4-10}{14}=\dfrac{-6}{14}=-\dfrac{3}{7}\\\\t_2=\dfrac{-(-4)+10}{2\cdot7}=\dfrac{4+10}{14}=\dfrac{14}{14}=1\\\\7t^2-4t-3=7\left(t+\dfrac{3}{7}\right)(t-1)=(7t+3)(t-1)\\\\=(7(x-3)+3)(x-3-1)=(7x-21+3)(x-4)\\\\=\boxed{(7x-18)(x-4)}
7 0
3 years ago
A number x rounded to 1 decimal place is 12.3 .What is the error interval for x?
Lostsunrise [7]
The answer is 12.25 or 12.35
5 0
3 years ago
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How many radians is 234°?<br> Give the exact answer in simplest form.
prohojiy [21]

Answer:

4.082 radians

Step-by-step explanation:

Here we want to convert 234° into radians.

To do it, we use the fact that pi radians is equal to 180°

Then we can write two equations:

x radians = 234°

3.14 radians  = 180°

Where we want to find the value of x, which is the equivalent in radians to 234°.

Now we can take the quotient of these two equations to get:

( x radians)/(3.14 radians) = (234°/180°)

Solving this for x, we get:

x radians = (234°/180°)*(3.14 radians) = 4.082 radians.

3 0
3 years ago
Covert 7 pi over 5 to degrees
hjlf

Answer:

Step-by-step

To convert radians to degrees, multiply by 180π , since a full circle is 360° or 2π radians.

3 0
3 years ago
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