I can't fail and no one has answered my previous questions so please help.

1 answer:

8 0

When you know your equation f(x) and they want you to find f(-4), it means that they want to know what f(x) is worth when x=-4 Therefore, you only need to plug in you x in the equation f(x)=5x-2 f(-4)=5(-4)-2 =-20-2 =-22 (B)

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Please help please and thanks

Bingel [31]

This will help a lot if you go to desmos! Just graph the equation on there! It’s much easier to see on computer

7 0

3 years ago

Can the measurement from △DEF be determined using only the Law of Cosines? State whether each measurement can be determined usin

quester [9]

9514 1404 393

Answer:

∠D - no
∠E - no
DE - yes

Step-by-step explanation:

With a single application of the Law of Cosines, you can only find one of an unknown side or an unknown angle. The other three elements in the 4-variable equation must be specified.

However, a single application of the LoC can be used to find DE. Then, knowing the three sides, either of the unknown angles can be found from an additional application of the LoC.

So, the answer is "it depends." It is yes to all if finding DE first is allowed. It is "no" to the angles if they must be found without finding DE first.

7 0

3 years ago

Which of the following is the solution set of x² + 8x + 12 = 0?

raketka [301]

Answer:

$\fbox{\begin{minipage}{9em}x = -2 and x = -6\end{minipage}}$