3 years ago

Câu 99: Cho hàm số f x  xác định trên ℝ , bảng biến thiên của hàm số f x   như sau.

Mathematics

1 answer:

OLga [1]3 years ago

4 0

Answer:

i doesn,t understand this language

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The sum of the polynomials 6x3 + 8x2 – 2x + 4 and 10x3 + x2 + 11x + 9 is

faltersainse [42]

Answer:

16x^2 + 9x^2 + 9x + 13.

Step-by-step explanation:

6x^3 + 8x^2 – 2x + 4 +10x^3 + x^2 + 11x + 9

Bringing like terms together:

= 6x^3 + 10x^3 + 8x^2 + x^2 - 2x + 11x + 4 + 9

= 16x^2 + 9x^2 + 9x + 13. (answer).

4 0

3 years ago

Helppppp..... evaluate 3^-3=

elixir [45]

ANSWER

The answer is

$\frac{1}{27}$

EXPLANATION

The given expression is

${3}^{ - 3}$

Use the negative index property;

${a}^{ - m} = \frac{1}{ {a}^{m} }$

We apply this property to get:

${3}^{ - 3} = \frac{1}{ {3}^{3} }$

This gives us:

${3}^{ - 3} = \frac{1}{3 \times 3 \times 3 }$

${3}^{ - 3} = \frac{1}{27}$

The correct option is B.

6 0

2 years ago

Read 2 more answers

What is the length of the hypotenuse of the triangle below?

Lubov Fominskaja [6]

Answer:

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

The square oh the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

h² = (9 $\sqrt{2}$ )² + (9 $\sqrt{2}$ )² = 162 + 162 = 324 ( take the square root of both sides )

h = $\sqrt{324}$ = 18 → D

4 0

3 years ago

Solve. 3/9A = 81 a = 9 a=81 3/9 a = 27 a = 243

Harrizon [31]

To solve for A, multiply each side by 9A to get rid of the fraction, so then 3 = 81(9A) --> 3 = 729A --> 3/729 = 1/243

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3 years ago

A solution of isopropyl alcohol has a boiling point of 80 degrees Celsius. what is the boiling point of the solution in the degr

Olegator [25]

The answer would be D because in Fahrenheit it could be 176

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3 years ago