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3 years ago

Need help asap!! will mark brainliest

Mathematics

1 answer:

irakobra [83]3 years ago

3 0

Answer: C :D

Step-by-step explanation:

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If √6b+4=20, then what is the value of b

sukhopar [10]

$D:6b+4\geq0\to b\geq-\dfrac{2}{3}\\\\\sqrt{6b+4}=20\ \ \ |^2\\\\(\sqrt{6b+4})^2=20^2\\\\|6b+4|=400\to 6b+4=400\ \vee\ 6b+4=-400\ \ |-4\\\\6b=396\ \vee\ 6c=-404\ \ \ |:6\\\\b=66\in D\ \vee\ b=-67\dfrac{2}{3}\notin D$

$Answer:\ b=66$

7 0

3 years ago

Use the order of operations to evaluate this expression (-2+1)

strojnjashka [21]

Answer:

Step-by-step explanation:

2²×3

I hope its correct

3 0

3 years ago

Read 2 more answers

Simplify quantity x squared plus 5 x plus 6 end quantity over quantity x plus 2 x2 + 1 x2 − 1 x + 3 x − 3

Marina CMI [18]

Answer:

$\frac{x^2+5x+6}{x+2}$

⇒ $x+3$

Step-by-step explanation:

To simplify:

$\frac{x^2+5x+6}{x+2}$

To simplify the given expression we need to factor the numerator.

We have

$x^2+5x+6$

Using split the middle term method by splitting $5x$ into two terms $ax$ and $bx$ such that $ax+bx=5x$ and $ax(bx)=6x^2$

We see that [ $ax=2x$ and $bx=3x$ ]

Thus we can write

⇒ $x^2+2x+3x+6$

Factoring in pairs by taking the GCF of terms in pairs.

⇒ $x(x+2)+3(x+2)$

Factoring the whole expression as $(x+2)$ is a common factor.

⇒ $(x+2)(x+3)$

Now, the expression can be rewritten as:

$\frac{(x+2)(x+3)}{x+2}$

Canceling out the common expressions, we have.

⇒ $x+3$

7 0

3 years ago

What is 4x(2x-3)-5(3x-4) in standard form

Klio2033 [76]

The stands form is 9x-12

8 0

3 years ago

Question 2 (25 points)

Nadusha1986 [10]

Answer:212.4

Step-by-step explanation:

Opposite/hypotenuse

Sin23=83/x

Multiply x to both sides to cancel out the x under 83

You get xsin23=83

Then divide sin23 to both sides

X=83/sin23

X=212.4

6 0

3 years ago