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3 years ago

1/2 - 2/9 =subtract. Simply if possible.

Mathematics

2 answers:

kozerog [31]3 years ago

6 0

Answer:

$\frac{5}{18}$

Step-by-step explanation:

$\frac{1}{2} -\frac{2}{9} =\frac{9}{18} -\frac{4}{18}=\frac{5}{18}$

xxTIMURxx [149]3 years ago

6 0

Let’s find a common denominator (cd
CD= 18

Multiply 1/2 by whatever to get 18, remember to multiply to the numerator and the denominator!

1 •9= 9
2•9=18

2•2=4
9•2=18

We get 9/18 - 4/18 which is 5/18

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This exercise involves the formula for the area of a circular sector. The area of a circle is 700 m2. Find the area of a sector

mezya [45]

Answer:

334.4 m²

Step-by-step explanation:

The formula for the area of a sector is given as:

1/2 × r² × θ

Where θ = Central angle

Area of a Circle = 700 m²

The formula for the area of a circle = πr²

r = Radius of a circle

r² = Area / π

r = √Area / π

r = √700/π

r = 14.927053304 m

Approximately, r = 14.93 m

Therefore, the area of the sector

= 1/2 × r² × θ

= 1/2 × 14.93² × 3 rad

= 334.35735 m²

Approximately, Area of the sector = 334.4 m²

4 0

3 years ago

Factorize the following algebraic expression:

Hoochie [10]

X^2+16-38=0
find what 2 numbers multiply to get -38 and add to get 16
find factors of 38
2 times 19
there is no way to use common factor so use quadratic formula which is
x= $\frac{ -b+\sqrt{b^2-4ac} }{2a}$ or x= $\frac{ -b-\sqrt{b^2-4ac} }{2a}$

ax^2+bx+c=0 subsitte
a=1
b=16
c=-38
subsitute
$\frac{ -16+\sqrt{16^2-4(1)(-38)} }{2(1)}$ = $\frac{ -16+\sqrt{256+152} }{2}$ = $\frac{ -16+\sqrt{408} }{2}$ = $\frac{ -16+2\sqrt{102} }{2}$ = $-8+\sqrt{102}$
so the answers for x are $-8+\sqrt{102}$ and $-8-\sqrt{102}$ which are aprox -2.099504938362 and +18.099504938362
so it would be
(x-[-8+√102])(x+[8+√102])=0

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3 years ago

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Soloha48 [4]

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4 years ago

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zubka84 [21]

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4 0

3 years ago

Given the function f(x) = 3 x - 21 + 6, for what values of x is f(x) = 18?

IrinaK [193]

Answer:

X=2

If 21+6=27 then subtract what f(x) is (which is 18) from the 27. 27-18=6 then 3x2=6 so therefore your answer is 2. Hope this helps!!

4 0

3 years ago

Read 2 more answers

1/2 - 2/9 =subtract. Simply if possible. ​

1/2 - 2/9 =subtract. Simply if possible.