Answer:
it dropped 20°F
Step-by-step explanation: since its at -2°F, u subtract 18°F to get 0°F. Then you subtract another 2°F to get -2°F. hope this helped. Its pretty simple.
Answer:
the probability that a randomly chosen test-taker will score 142 or lower = 0.8643
Step-by-step explanation:
We are given;
Data point; x = 142
Mean; μ = 153
Standard deviation; σ = 10
So,let's find the z-score using;
z = (x - μ)/σ
z = (142 - 153)/10
z = -1.1
From the z-distribution table attached, the probability is;
P(z < -1.1) = 1 - 0.13567 ≈ 0.8643
Answer:
2.
3. - definition of perpendicular
4. - all right angles are congruent
6.
7.
Step-by-step explanation:
<u>Given: </u>Point P is the perpendicular bisector of AB
<u>Prove: </u>P is equidistant from the endpoints AB
<u>Proof.</u>
1. Point P is on the perpendicular bisector of AB - given
2. - definition of bisector
3. - definition of perpendicular
4. - all right angles are congruent
5. - reflexive property of congruence
6. - SAS congruency postulate
7. - corresponding parts of congruent triangles are congruent
8. Point P is equidistant from the endpoints of AB - definition of equidistant
It would be A because there is only 1 chance on each board
so, as we can see, it's really multiplying the previous term by -2/3, to get the next term, namely, -2/3 is the common ratio, and of course, the first term is 1.