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3 years ago

SIMPLIFY this expression.

Mathematics

1 answer:

oksano4ka [1.4K]3 years ago

8 0

Answer:

none of the answer above

Step-by-step explanation:

it should be

16x +8 or 8(2x+y)

group the number together according to alphabet and number

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Simplify: (5+√−9)(−9+√−196)

Margaret [11]

Answer:

-1809 + 899i or

-1809 + √-899

Step-by-step explanation:

foil method

i² = -1

5 0

3 years ago

Find the area of the semicircle. diameter = 12

dimaraw [331]

Answer:

$\huge\boxed{\sf Area\ of \ Semicircle = 56.55 \ units^2}$

Step-by-step explanation:

Diameter = 12

Radius = 12/2 = 6

$\sf Area\ of \ Semicircle =\frac{\pi r^2}{2} \\Area\ of \ Semicircle =\frac{\pi (6)^2}{2} \\Area \ of \ Semicircle = \frac{\pi (36)}{2}\\ Area \ of \ Semicircle = 18 \ pi$

$\sf Area\ of \ Semicircle = 56.55 \ units^2$

7 0

3 years ago

Read 2 more answers

Pls help me find perimeter and area, id really appreciate it. thank u!

Agata [3.3K]

Perimeter = 9 + 13 + 6 = 28 m

area = 1/2 x 9 x 5.3 = 23.85 square m

8 0

3 years ago

Write down in terms of

Nata [24]

Answer:

-5

Step-by-step explanation:

Here,

t2-t1=20-25=-5

t3-t2=15-20=-5

t4-t3=10-15=-5

t5-t4=5-10=-5

5 0

3 years ago

What is the center and radius of the circle given by x2 + y2 - 10x - 12y + 24 = 0?

AveGali [126]

Answer:

centre (5, 6 ) , r = $\sqrt{37}$

Step-by-step explanation:

the equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k ) are the coordinates of the centre and r the radius

given

x² + y² - 10x - 12y + 24 = 0 ( collect x and y terms together and subtract 24 from both sides )

x² - 10x + y² - 12y = - 24

using the method of completing the square

add ( half the coefficient of the x / y terms)² to both sides

x² + 2(- 5)x + 25 + y² + 2(- 6)y + 36 = - 24 + 25 + 36

(x - 5)² + (y - 6)² = 37 ← in standard form

with centre (h, k ) = (5, 6 ) and r = $\sqrt{37}$

3 0

2 years ago