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3 years ago

14

Solve using the quadratic formula

1 answer:

Svetradugi [14.3K]3 years ago

7 0

The answers are -16 and 9. Hopefully this helps :D

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Use substitution to solve the following system of equations. Show all of your work. Write the solution as an ordered pair.

trapecia [35]

Answer:

$\left \{ {{x=2} \atop {y=2}} \right.$

Step-by-step explanation:

Substitute the second equation into the first one:

$4x+(2x-2)=10\\6x-2=10\\6x=12\\x=2$

Substitute $x=2$ into the second equation:

$y=2\times 2-2\\y=4-2\\y=2$

$\therefore \left \{ {{x=2} \atop {y=2}} \right.$

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1 year ago

A railroad crossing sign has a diameter of 30 inches. what is the area of the sign?

Anna007 [38]

Answer:

706.5m^2

Step-by-step explanation:

The sign is a circle

Area of a circle is (pi)r^2

d = 30 in -> r = d/2 = 30/2 = 15

Area = 3.14 x (15)^2 = 706.5m^2

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2 years ago

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What is the period of `y = 1+ tan((1)/(2)x)`?

jonny [76]

2π is the period of `y = 1+ tan((1)/(2)x)`

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3 years ago

What is the Volume?

Serhud [2]

Answer:

703.36

Step-by-step explanation:

the formula is v=b×h×pi

pi = 3.14

length: 28

base:8

So base (8) times length (28) times pi (3.14)

8×28×3.14 = 703.36

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2 years ago

The circumference of a circle is 10pi cm. What is the Radius of the circle?

enot [183]

Answer3:

Step-by-step explanation:

I do not know

6 0

3 years ago

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