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3 years ago

Help help help help help help

Mathematics

1 answer:

Advocard [28]3 years ago

4 0

Answer:

Congruent angles and proportional side lengths

Step-by-step explanation:

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*math please help brainliest*

valentinak56 [21]

Answer:

$\dfrac{3x+4}{2x-2}$

Step-by-step explanation:

Invert and multiply the way you would any fraction division problem. Then cancel common factors from numerator and denominator.

$\displaystyle\frac{\left(\frac{4x^2+2x}{x^2+x-2}\right)}{\left(\frac{8x^2+4x}{3x^2+10x+8}\right)}=\frac{4x^2+2x}{x^2+x-2}\cdot\frac{3x^2+10x+8}{8x^2+4x}\\\\=\frac{2x(2x+1)(3x+4)(x+2)}{4x(2x+1)(x-1)(x+2)}=\frac{3x+4}{2(x-1)}\\\\=\frac{3x+4}{2x-2}$

4 0

3 years ago

Need help on this math problem!!!

Colt1911 [192]

Answer:

$(fof^{-1})(x)=x$

Step-by-step explanation:

Composition of two functions f(x) and g(x) is represented by,

(fog)(x) = f[g(x)]

If a function is,

f(x) = (-6x - 8)² [where x ≤ $-\frac{8}{6}$ ]

Another function is the inverse of f(x),

$f^{-1}(x)=-\frac{\sqrt{x}+8}{6}$

Now composite function of these functions will be,

$(fof^{-1})(x)=f[f^{-1}(x)]$

= $[-6(\frac{\sqrt{x}+8}{6})-8]^{2}$

= $[-\sqrt{x}+8-8]^2$

= $(-\sqrt{x})^2$

= x

Therefore, $(fof^{-1})(x)=x$

4 0

3 years ago

John and Alan have a collection of x baseball cards. John hasx4 cards. What fraction of the cards does Alan have

vesna_86 [32]

The answer is 3/4
Hope this helps

7 0

3 years ago

Read 2 more answers

Mr. Littles is building a triangular sandbox using three boards. He already has two boards that measure 9 feet and 12 feet. Sele

Bess [88]

Answer:

9 feet, 15 feet, 19 feet

Step-by-step explanation:

Options are:

2 feet
3 feet
9 feet
15 feet
19 feet
21 feet
30 feet

-------------------------------------

Use the triangle inequality theorem: sum of any two side must be greater than the third side by length

2 feet ⇒ no, as 2 + 9 < 12
3 feet ⇒ no, as 3 + 9 = 12
9 feet ⇒ yes
15 feet ⇒ yes
19 feet ⇒ yes
21 feet ⇒ no, as 9 + 12 = 21
30 feet ⇒ no, as 9 + 12 < 30

6 0

3 years ago

URGENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DUE IN LESS THAN 12 MINS

Anettt [7]

Answer:

28.26m^2 (aka. 28.26 meters squared)

Step-by-step explanation:

The area of a circle is A=pi*r^2 where r is the radius of the circle.

Since r=3, then A=pi*3^2=9pi=28.26

Therefore, the area of the merry-go-round is 28.26 square meters

6 0

2 years ago