1 year ago

Solve by completing the square.

Mathematics

1 answer:

Leona [35]1 year ago

3 0

Answer:

28- 4± $\sqrt{21}$

30- -4±2i

Hope this helps!

You might be interested in

Helppppp i will mark brainliest

sasho [114]

16 in^2 is the surface area so 16^2 divided by 2x pi which is 3.142 I think - 2x1.5 to find h.Sorry I rushed I’ll write correctly later

3 0

2 years ago

What additional information must be given ?

MA_775_DIABLO [31]

A I hope this helps

4 0

2 years ago

Presley and Lakira sell cookies. Presley sold 5 less than twice as many cookies as LaKira. If LaKira sold 16 cookies, how many c

soldi70 [24.7K]

27. twice as many as 16 would be 32 and 32-5 is 27

5 0

2 years ago

A furniture designer builds a trapezoidal desk with a semicircular cutout. What is the area of the desk?

nirvana33 [79]

Answer:

$Area = 26478cm^2$

Step-by-step explanation:

Given

See attachment for desk

Required

The area

First, calculate the area of the semicircular cutout

$Area = \frac{\pi r^2}{2}$

Where

$r = 60cm$

So:

$A_1 = \frac{3.14 * 60^2}{2}$

$A_1 = \frac{11304}{2}$

$A_1 = 5652cm^2$

Next, the area of the complete trapezium

$Area= \frac{1}{2}(a + b) * h$

Where

$a = 300$

$b = 2 * r = 2 * 60 = 120$

$h = 153$

So:

$A_2 = \frac{1}{2} * (300 + 120) * 153$

$A_2 = \frac{1}{2} * 420 * 153$

$A_2 = 32130cm^2$

The area of the desk is:

$Area = A_2 - A_1$

$Area = 32130cm^2 - 5652cm^2$

$Area = 26478cm^2$

8 0

2 years ago

Simplify: 6y + 5z + 8y – 3z

mezya [45]

Combine like terms. 6y + 8y is 14y. 5z - 3z is 2z. so the answer is 14y + 2z.

4 0

2 years ago

Read 2 more answers