Need help asap in the middle of a test I really don’t understand this please help ASAP !?!

Mathematics

1 answer:

Dmitriy789 [7]2 years ago

7 0

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We can describe 12x – 8 as an expression.

never [62]

Answer:4 and 3x-2 are roots of 12x-8.

Step-by-step explanation: Expression contains no equality sign

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2 years ago

5 times a number is 110 less than 7 times that number

Nitella [24]

Answer:

Step-by-step explanation:

let the number=x

5x=7x-110

7x-5x=110

2x=110

x=110/2=55

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3 years ago

150% of what length is 66 cm

svet-max [94.6K]

let's say is "x", thus "x" is the 100%.

we know that 66 is 150%, what is "x"?

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 66&150\\ x&100 \end{array}\implies \cfrac{66}{x}=\cfrac{150}{100}\implies \cfrac{66}{x}=\cfrac{3}{2} \\\\\\ 132=3x\implies \cfrac{132}{3}=x\implies 44=x$

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3 years ago

PLS HELP!

Marina CMI [18]

Answer:The domain for f(x) and g(x) is the set of all real numbers. Let f(x) = 2x2 + x − 3 and g(x) = x − 1. Find f(x) • g(x). The domain for f(x) ...

1 answer

Top answer:

Just multiply the two functions. You can usea a variety of ways. I like t

Step-by-step explanation:

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2 years ago

I need to find the derivative. I’m not very good at this so I am answer asap would be sosososo helpful

Bingel [31]

Answer:

See below.

Step-by-step explanation:

First, notice that this is a composition of functions. For instance, let's let $f(x)=\sqrt{x}$ and $g(x)=7x^2+4x+1$ . Then, the given equation is essentially $f(g(x))=\sqrt{7x^2+4x+1}$ . Thus, we can use the chain rule.