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attashe74 [19]
2 years ago
8

X squared minus 8 equals 8

Mathematics
1 answer:
Citrus2011 [14]2 years ago
5 0

{x}^{2}  - 8 = 8 \\

x^2 - 8 + 8 = 8 + 8

x^2 = 16

x = √16

x = 4

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If anyone could help out with this one i would really appreciate it <br><br> f(2)=?
algol13

Answer:

f(2) = 0

Step-by-step explanation:

Function f(t) is defined in three different ways depending on the value of t.

For t = 8, function f(t) is -64/t.

For t = 10, function f(t) is 14 - t.

We are not asked about f(8) or f(10). We are asked about f(2). The third definition of function f(t) is for all values of t that are not 8 or 10. 2 is not 8 or 10, so use the third definition of function f(t) and plug in 2 for t.

f(t) = t^2 - 3t + 2 for t not equal to 8 or 10.

f(2) = 2^2 - 3(2) + 2

f(2) = 4 - 6 + 2

f(2) = 0

6 0
4 years ago
Lea buys 20 picture frames. Some are 4 in. by 6 in. frames which cost $5.80 each, and the rest are 5 in. by 7 in. frames that co
MAXImum [283]
To find the answer we have to slowly analyze the command.
 For surely on the one side we want to have total cash spent, so 80.8$
We know that there are 2 types of frames 5,80$ and 9.60$.
We know too, that f is the number of frames 5.80$ bought.
Simply, to find the cash spent on those frames we have to just mulitply 5.80$ times f, so we obtain f*5.8.
We can say that number of bigger frames is 20-f.
So to find cash spent on bigger frames we have to multiply 9.60$ times (20-f), so
9.60*(20-f)
Now we can just add cost of all frames together
f*5.80+9.60(20-f)
And we know that is equal to 80.8, so
f*5.80+9.60(20-f)=80.8

As we can see, the answer is b.
5 0
3 years ago
Please help meeeeee​
klasskru [66]

Answer:

Step-by-step explanation:

Y= 5/2x+5. :D

8 0
3 years ago
Read 2 more answers
Which function below is the inverse of f(x) = x2 − 9?
Scorpion4ik [409]
F (x)=y
y=2x-9


X Y
-2 -15 y=2 (-2)-9
y=-4+-9
y=-15

-1 -11 y=2 (-1)-9
y=-2+-9
y=-11

0 -9 y=2 (0)-9
y=0+-9
y=-9

1 -7 y=2 (1)-9
y=2+-9
y=-1

2 -5 y=2 (2)-9
y=4+-9
y=-5

Here is all the work
6 0
3 years ago
Read 2 more answers
CERTAIN ANSWERS ONLY!!! There should 4 answers, thank you in advance. It may be a bit difficult sorry. Thank you :)
yaroslaw [1]

Answer:

See Below.

Step-by-step explanation:

We are given that ∠1 and ∠7 are supplementary.

And we would like to prove that a is parallel to b.

  Statements:                                           Reasons:

\textbf{\textsf{1. $\angle 1$ and $\angle 7$ are supplementary}}              Given

\textsf{2. $m\angle3$ + $m\angle 7$ $= 180$}                               Supplementary Angles

\textsf{3. $\angle3$ and $\angle7$ are supplementary}                Definition of Supplementary

\textsf{4. }\bf{\angle 1 \cong \angle3}                                               Congruent Supplements Theorem

\textsf{5. }a\parallel b                                                      Corresponding Angles Converse

And we are done!

 

3 0
3 years ago
Read 2 more answers
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