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bekas [8.4K]
2 years ago
15

What’s (2^2+8)x7 please help

Mathematics
1 answer:
Ivenika [448]2 years ago
3 0

Answer:

84

Step-by-step explanation:

2^2=4

4+8=12

12*7=84

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The slope of the line p is__and the slop of the line q is__
kondaur [170]

Answer:

The slope of line p is 3 and the slope of line q is -3.

4 0
1 year ago
How do you illustrate<br>quadratic equation<br>in one variable?​
soldi70 [24.7K]

Step-by-step explanation:

Quadratic Equation

Quadratic equation is in the form

ax2+bx+c=0

Where

a, b, & c = real-number constants

a & b = numerical coefficient or simply coefficients

a = coefficient of x2

b = coefficient of x

c = constant term or simply constant

a cannot be equal to zero while either b or c can be zero

Examples of Quadratic Equation

Some quadratic equation may not look like the one above. The general appearance of quadratic equation is a second degree curve so that the degree power of one variable is twice of another variable. Below are examples of equations that can be considered as quadratic.

1. 3x2+2x−8=0

2. x2−9=0

3. 2x2+5x=0

4. sin2θ−2sinθ−1=0

5. x−5x−−√+6=0

6. 10x1/3+x1/6−2=0

7. 2lnx−−−√−5lnx−−−√4−7=0

For us to see that the above examples can be treated as quadratic equation, we take example no. 6 above, 10x1/3 + x1/6 - 2 = 0. Let x1/6 = z, thus, x1/3 = z2. The equation can now be written in the form 10z2 + z - 2 = 0, which shows clearly to be quadratic equation.

Roots of a Quadratic Equation

The equation ax2 + bx + c = 0 can be factored into the form

(x−x1)(x−x2)=0

Where x1 and x2 are the roots of ax2 + bx + c = 0.

Quadratic Formula

For the quadratic equation ax2 + bx + c = 0,

x=−b±b2−4ac−−−−−−−√2a

See the derivation of quadratic formula here.

The quantity b2 - 4ac inside the radical is called discriminat.

• If b2 - 4ac = 0, the roots are real and equal.

• If b2 - 4ac > 0, the roots are real and unequal.

• If b2 - 4ac < 0, the roots are imaginary.

Sum and Product of Roots

If the roots of the quadratic equation ax2 + bx + c

= 0 are x1 and x2, then

Sum of roots

x1+x2=−ba

Product of roots

x1x2=ca

You may see the derivation of formulas for sum and product of roots here.

4 0
3 years ago
Guys please help..... If the angle of O is 34 degree, AC = 12 feet, solve the AOC sector area.
9966 [12]

Answer:

Step-by-step explanation:

6 0
3 years ago
Is 0.007 x 10 equivalent to 0.07
Pachacha [2.7K]
Yes they are equivalent because when you multiply by 10, you move the decimal place one spot to the right.
5 0
3 years ago
To find the quotient of 3 divided by one-sixth, multiply 3 by
a_sh-v [17]

Answer:

You have to multiply 3 x 6.

Step-by-step explanation:

3/\frac{1}{6} \\Flip\\3*\frac{6}{1} \\3*6

Hope this helped! :)

6 0
3 years ago
Read 2 more answers
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