Answer:
6
y
+
3
=
−
4
y
2
Move
4
y
2
to the left side of the equation by adding it to both sides.
6
y
+
3
+
4
y
2
=
0
Use the quadratic formula to find the solutions.
−
b
±
√
b
2
−
4
(
a
c
)
2
a
Substitute the values
a
=
4
,
b
=
6
, and
c
=
3
into the quadratic formula and solve for
y
.
−
6
±
√
6
2
−
4
⋅
(
4
⋅
3
)
2
⋅
4
Simplify.
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y
=
−
3
±
i
√
3
4
Step-by-step explanation:
The first one is arithmetic with CD = -9.1 so the answer is B
Third one is D
Second question:
a1 = 648 and r = 1/3 so 8th term = 648 * (1/3)^7 = 8/27
Answer:
190 + __ = 248
190 + 58 = 248
Step-by-step explanation:
Since 248 is 190 MORE THAN the speed you're trying to find, add 190 to the unknown speed (which comes out to 58) to equal 248.
IF you are dilating about the origin, which you didn't exactly state, the new coordinates are A' (1/5, 1), B' (2/5, 1/5), C' (0, 4/5). Dilation is all about distance, so you have to move the new coordinates to whatever the scale factor is times the x and y distance. For example, A is at (1, 5), so 1/5 of 1 is 1/5, and 1/5 of 5 is 1, hence your new coordinate for A. It is a fifth of the distance from the origin as its preimage is.
Answer:
68 ÷ 134 = 0.5075
0.5075 * 100 = 50.75
68 of 134 = 50.75%
Step-by-step explanation:
