2)use the formula y2-y1/x2-X1
3)is (A)
Answer:
5/11
explanation
Probability here is the chance of selection out of a total. So, we need to first find the total number of marbles.
total
=
5
+
3
+
2
+
1
=
11
So there are
11
marbles total. The probability that we pick one of the
3
green marbles out of the
11
is simply that ratio:
P
green
=
3
11
Same idea for yellow:
P
yellow
=
2
11
The probability of picking either of these colors is simply the sum of their probabilities.
P
green or yellow
=
P
green
+
P
yellow
=
3
11
+
2
11
=
5
11
Step-by-step explanation:
(x + 0.5) + (3x - 2) = 3x + 1.5
4x - 1.5 = 3x + 1.5
x = 3
LM = 3x - 2 = 9 - 2 = 7.
Answer:
a. IQR = 2.25
b. 40%
(I'm not sure about B.)
Step-by-step explanation:
a.=Q3 - Q1
=4.7 - 2.2
=2.5
b. =2/5 × 100/1
=40%
Answer:
x = 3/2 or 1.5
Step-by-step explanation:
y = 3 in the equation 2x + 3y = 12
Substitute 3 in for y.
2x + 3(3) = 12
Multiply.
2x + 9 = 12
Subtract 9 from both sides.
2x + 9 - 9 = 12 - 9
2x = 3
Divide both sides by 2.
2x ÷ 2 = x
3 ÷ 2 = 3/2 or 1.5
x = 1.5