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hram777 [196]
2 years ago
9

Plplpl solve the answer​

Mathematics
1 answer:
11111nata11111 [884]2 years ago
4 0

Given:

The expression is:

\sqrt[3]{\dfrac{-512}{729}}

To find:

The value of the given expression.

Solution:

We have,

\sqrt[3]{\dfrac{-512}{729}}

It can be rewritten as

=\sqrt[3]{\dfrac{(-8)\times (-8) \times (-8)}{9\times 9\times 9}}

=\sqrt[3]{\dfrac{(-8)^3}{9^3}}        [\because a^ma^n=a^{m+n}]

=\sqrt[3]{\left(\dfrac{-8}{9}\right)^3}        [\because \dfrac{a^m}{b^m}=\left(\dfrac{a}{b}\right)^m]

=\dfrac{-8}{9}        [\because \sqrt[n]{x^n}=x]

The value of given expression is \dfrac{-8}{9}.

Therefore, the correct option is b.

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The sum of two consecutive intergers is 139. Find the intergers
Elanso [62]

Let the Integer be x then its consecutive number will be x+1,

So, x+x+1=139,

2*x=138

x=69

The integers are 69,70

4 0
2 years ago
I need to get all of them solved by tomorrow, and I have no idea where to start with any of them
Tems11 [23]

Answer:

1- x=4,3

2- x= 2, 5/6

3- x= i dont know

4- b-

 c-

d- 2x\frac{3}{2}

6 0
2 years ago
Find f(-2) f(x)=9x^2-5x+2
borishaifa [10]

Find f(-2) f(x)=9x^2-5x+2


f(-2) means replace x in the equation with -2:


f(-2)=9(-2)^2-5(-2)+2

= 9(4) +10 + 2

= 36 +10 + 2

= 48


f(-2) = 48



4 0
3 years ago
Someone solve this question!!!??Thank you
Naddik [55]

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and 1.5 - 3.5 = -2.0

The answer would be -0.75k - 2.0

7 0
3 years ago
Read 2 more answers
The maximum value of the function: f(x)= -5 x ^2 +30x-200 is?
VARVARA [1.3K]

Answer:

\displaystyle    - 155

Step-by-step explanation:

we are given a quadratic function

\displaystyle f(x) =  - 5 {x}^{2}  + 30x - 200

we want to figure out the minimum value of the function

to do so we need to figure out the minimum value of x in the case we can consider the following formula:

\displaystyle x _{ \rm  min} =  \frac{ - b}{2a}

the given function is in the standard form i.e

\displaystyle f(x) = a {x}^{2}  + bx + c

so we acquire:

  • b=30
  • a=-5

thus substitute:

\displaystyle x _{ \rm  min} =  \frac{ - 30}{2. - 5}

simplify multiplication:

\displaystyle x _{ \rm  min} =  \frac{ - 30}{ - 10}

simply division:

\displaystyle x _{ \rm  min} =  3

plug in the value of minimum x to the given function:

\displaystyle f (3)=  - 5 {(3)}^{2}  + 30.3 - 200

simplify square:

\displaystyle f (3)=  - 5 {(9)}^{}  + 30.3 - 200

simplify multiplication:

\displaystyle f (3)=  - 45  + 90- 200

simplify:

\displaystyle f (3)=   - 155

hence,

the minimum value of the function is -155

5 0
2 years ago
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