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Alina [70]
3 years ago
13

gabe goes to the mall. if k is the number of items he bought, the expression 17.55k+27 gives the amount he spent in dollars at o

ne store. then he spent 24 dollars at another store. find the expression which represents the amount gabe spent at the mall. then estimate how much gabe spent if he bought 4 items.​
Mathematics
1 answer:
Natali5045456 [20]3 years ago
8 0

Answer:

68.55

Step-by-step explanation:

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(a2 − 6) and (a2 + 4) are the factors of
morpeh [17]
Just multiply them together and get a4-2a2-24.
(a2-6)(a2+4)
F: a4
O:4a2
I:-6a2
L:-24
Add together
a4-2a2-24
6 0
3 years ago
Two sisters, Lily and Suri, have been saving money for college for the past several years. At the end of the first year, each si
andriy [413]

Answer:

1st year:

Lily:20

Suri:20

2nd year

L:20*3=60

S:20+80=100

3rd year

L:60*3=180

S:100+80=180

4th year

L 180*3=540

S 180+80=260

It will take Lily 4 years to hve more money saved than Suri

Step-by-step explanation:

8 0
3 years ago
A newsletter publisher believes that less than 58% of their readers own a Rolls Royce. For marketing purposes, a potential adver
quester [9]

Answer:

We don´t have at 95% of confidence, evidence to reject the publisher´s claim

Step-by-step explanation:

Population mean      p₀ = 58 %    or    p₀ = 0,58  

Hypothesis Test:

Null Hypothesis                  H₀           p  =  p₀

Alternative Hypothesis      Hₐ           p  <  p₀

For a significance level α = 0,05  means that CI = 95 % or  CI = 0,95

z(c) = - 1,64

MOE = z(c)* √(p*q)/n

p  -  p₀  / √(p*q)/n  = z(s)

And  that  z(s) is in the acceptance region

|z(s)| < |z(c)|

|z(s)| < 1,64

Then if that so we fail to reject H₀ . We don´t have evidence to reject the publisher´s claim

8 0
2 years ago
Consider the following events for a driver selected at random from a general population.
adoni [48]

Answer:

a. P(AnB)

b. P(B|A)

c. P(A^I|B)

d. P(A or B)

e. P(B^I or A)

Step-by-step explanation:

Since  A= driver is under 25 years old (1)

B = driver has received a speeding ticket (2)

a.The probability the driver is under 25 years old and has recieved a speeding ticket.

this simple means the intersection of both set, which can be written as

P(AnB)

b. The probability a driver who is under 25 years old has received a speeding ticket.

This is a conditional probability, probability that B will occur given that A as occur.

P(B|A)

c. the probability a driver who has received a speeding ticket is 25 years or older.

P(A^I|B)

d. The probability the driver is under 25 years old or has received a speeding ticket.

P(A or B)

e. The probability the driver is under 25 years old or has not received a speeding ticket.

P(B^I or A)

4 0
3 years ago
Write the mixed number as a percent.<br><br> 1 7/20
MaRussiya [10]

Answer:135%


Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
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