Answer:
11
Step-by-step explanation:
(-3)²-3(-3)-7
9+9-7
11
Answer:
Look at the equations:
y
=
−
9
x
−
21
and
y
=
5
x
+
7
Because both equations equal (y), they both equal the same.
If an equations says "
y
=
−
9
x
−
21
" , that means we can replace (y) with
−
9
x
−
21
.
Therefore when i take the equation:
y
=
5
x
+
7
, we can replace (y) to get:
−
9
x
−
21
=
5
x
+
7
Now isolate (x):
−
9
x
−
21
=
5
x
+
7
⇔
−
21
=
14
x
+
7
⇔
−
28
=
14
x
⇔
x
=
−
2
10.125 as a percentage is 1012.5%
Answer:
1. 81
2. 108 1/2
3. 189 1/2
Step-by-step explanation:
Answer:
-226,981
Step-by-step explanation:
This is how you do it.
First, you do 3-2 which is 1.
Then, you do 3-4 to the 3rd power which is -61.
After, you do 1*-61 because there are parenthesis, which equals -61.
Then, you do -61, which is the total of everything in parenthesis, and do it times the power of 3 to get -226,981.
Hope it helps!!^_^
