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3 years ago

Which of the following is not a correct factorization of the binomial 10x2 + 40x ?

Mathematics

1 answer:

meriva3 years ago

5 0

B. To be careful, use brackets: 10(1*2) + 4x which will be 20 + 40x or as you have it, 10*2 + 40x.

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What is the following sum 3b^2

densk [106]

The given expression is $3b^2*(\sqrt[3]{54a}) + 3*(\sqrt[3]{2ab^6})$

This can be simplified as :

= $3*b^2*(\sqrt[3]{27 *2*a}) + 3*(\sqrt[3]{2*a*b^6})$

We know that: $\sqrt[3]{27} = 3$

Similarly we also can simplify: $\sqrt[3]{b^6} = b^2$

So our expression will look like this:

= $3*3*b^2*(\sqrt[3]{2a}) + 3*b^2*(\sqrt[3]{2a})$

= $9b^2*(\sqrt[3]{2a}) + 3b^2*(\sqrt[3]{2a})$

= $\sqrt[3]{2a}*(9b^2 + 3b^2)$

= $\sqrt[3]{2a}*(12b^2)$

This can also be written as:

$12b^2(\sqrt[3]{2a})$

So the Answer is Option B

6 0

2 years ago

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Help me please!!!!!!!!

My name is Ann [436]

Answer:

(x+4)^2

Step-by-step explanation:

5 0

2 years ago

Which value is in the domain of f(x)?

MatroZZZ [7]

9514 1404 393

Answer:

Step-by-step explanation:

The function definition tells you its domain is ...

-6 < x ≤ 4

Values -7, -6, and 5 are not in this domain.

Of the listed values, only 4 is in the domain.

7 0

3 years ago

HELLPPP????? PLEASEEEESSSS

Verdich [7]

Answer:

$\boxed{43.48 \, \%}$

Step-by-step explanation:

The formula for calculating percentage is

$\text{Percentage} = \dfrac{\text{Part }}{\text{Whole}} \times 100 \, \%$

The "part" is the number of single-shot espressos

The "whole" is the total number of espressos.

$\begin{array}{rcl}\text{Total espressos} & = & 46\\\text{-Single-shot espressos} & = & 26\\\text{Double-shot espressos} & = & 20\\\end{array}$

$\text{ \% Double-shot}=\dfrac{20}{46} \times 100 \, \% =\mathbf{43.48 \, \%}\\\\\boxed{\mathbf{43.48 \, \%}} \text{ of the espressos were double-shot}$

8 0

3 years ago

I'm sorry but what!? Can someone help?

tatiyna

Step-by-step explanation:

Axis of symmetry for quadratic ax² + bx² + c:

x = -b/2a.

Therefore for y = x² - 4x + 2,

-b/2a = -(-4)/2(1) = 2

The axis of symmetry is x = 2.

7 0

3 years ago

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