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3 years ago

13

Why in the world did I have nearly 800 points worth of questions deleted? Every single one of them were right! What do I do now?

1 answer:

vekshin13 years ago

5 0

Answer:

read your username :)

Step-by-step explanation:

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13. Solve for x: 2x - 5 = 11

Ray Of Light [21]

13. Is 8
14. Is 10
15. Is D

6 0

3 years ago

According to Trail Count, the annual survey of San Jose's off-street bicycle and pedestrian trail users, approximately 24% use t

ratelena [41]

Answer:

a) 0.5

Step-by-step explanation:

a)

Let T be the event that person uses trails daily and E be the event that person uses trails for exercise.

We have to find the probability that person uses the trails for exercise given that the person uses trails daily which can be denoted as P(E/T).

P(E/T)= P(E∩T)/P(T)

We are given that P(T)=0.24 and P(E∩T)=0.12. So,

P(E/T)= 0.12/0.24

P(E/T)= 0.5

Thus, the probability that person uses the trails for exercise given that the person uses trails daily is 50%

6 0

3 years ago

PLEASE HELP ME please!

Delicious77 [7]

Answer:

x < -1

so its C

Step-by-step explanation:

3 0

3 years ago

A house worth $70,000 when purchased was worth $67,000 after the first year and $64,000 after the second year. If the economy do

Citrus2011 [14]

Answer:

a) The formula for the sequence is

$a_n = 67,000 -3,000(n-1)$

b) $a_7 = 49,000$

Step-by-step explanation:

Note that the difference between any two consecutive terms in the sequence is always equal to $3,000

$67,000-70,000= -3,000\\\\64,000-67,000=-3,000$

Then we have an arithmetic sequence where each term increases by a magnitude of 3,000 with respect to the previous term.

The explicit formula for an arithmetic sequence is:

$a_n = a_1 +d(n-1)$

Where d is the common difference between the consecutive terms of the sequence

$d = -3,000$

$a_1$ is the first term, or the value of the house after year 1 $a_1= 67,000$

n represents the number of years since the house was purchased

With

n={0, 1, 2, 3, 4, 5, 6, 7,.., n}

a) Then the formula for the sequence is

$a_n = 67,000 -3,000(n-1)$

With

n={0, 1, 2, 3, 4, 5, 6, 7,.., n}

---------------------------------------------------------------------------------------------

b) Now we can use the formula to find the price of the house after 7 years

$a_7 = 67,000 -3,000(7-1)$

$a_7 = 67,000 -3,000(6)$

$a_7 = 49,000$

3 0

3 years ago

A building meets the ground at a right angle. The top of a 10-foot ladder is placed against the bottom edge of a window in the b

Burka [1]

Answer:

8 ft

Step-by-step explanation:

Use pythagorean theorem. $a^{2}+b^{2}=c^{2}$ . Put 10 and 6 into the equation as b and c.

$a^{2}+6^{2}=10^{2}$

$a^{2} =100-36\\a^{2}=64\\a=8$

Therefore, the answer is 8ft.

A diagram is attached. Sorry it's kinda messy.

7 0

3 years ago