MATHEMATICS MIDDLE SCHOOL

Provide an appropriate response.6) The length of time it takes college students to find a parking spot in the library parking lot follows a normal
distribution with a mean of 4.5 minutes and a standard deviation of 1 minute. Find the cut-off time which
75.8% of the college students exceed when trying to find a parking spot in the library parking lot.
A) 4.8 min
B) 5.3 min
C) 5.2 min
D) 5.0 min

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

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Decrease from 126 ounces to 48 ounces
Can somebody please help me
In elses orchard 70% of the trees are apple trees . The rest of the trees are plum trees. What fraction of the trees are plum trees?
HELP HELP HELP HELP PLEASE (sorry )can u complete this tiny is to .................. as broad is to ........................the words to fill this in are tiny is to ( large , minute , second ) as broad is to ( wide , fast , country ) the question is can u fill the gaps and i need this extremely fast

Arrange the digits 1-9 in the 9 boxes to make three equivalent fractions,all equal to 1/2

Answers

I'm confused because there are no boxes, but maybe 2/4 3/6 5/10

I see the amount was $90.00 then reduced to $
75.00 , what is the percent ?

Answers

Answer:

16 2/3 %

Step-by-step explanation:

Since the price went down, we are find the percent decrease.

Percent decrease = (original price - new price)/ original price

= (90 - 75)/90

=15/90

.1666666666666

Changing to percent form

16.6666666666666666666666%

16 2/3 %

~Please Help~Please first state the answer and say which one you are answering for.
Then show how you got to it.
-Thank you :)
***Only answer is you know for sure please!***

Answers

the first one is the bottom right multiply 7.50*h or the hours to find the cost
and the second one is bottom left you start at 0 and advance 0 the multiply or add 67*2=134 then 67*5=335 and then 67*9=603 so you have your numbers 0,134,335,603

Complete the following proof.Given: m ∠XOY = m ∠WOV
m YZ = m ZW
Prove: m XZ = m ZV

Answers

Answer:

Step-by-step explanation:

m ∠XOY = m ∠WOV

so, m XY = m WV --- (i)

{ If angle subtended by two arcs at the center are equal, then length of arc are equal}

m YZ = m ZW ------- (ii) {given}

Add (i) and (ii)

XY + YZ = WV + ZW

XZ = ZV

Hence proved.

Answer:

Given that m ∠XOY = m ∠WOV then m XY = m WV, because central angles are equal to arcs.

Given: m YZ = m ZW

The addition of arcs XY and YZ make arc XZ, that is: m XY + m YZ = m XZ

The addition of arcs ZW and WV make arc XZ, that is: m WV + m ZW = m ZV

Then, m XZ = m ZV

$1348 deposited at an interest rate of 2.5% for 18 months

Answers

I=PRT price/principle amount×rate×time in years
=1348×0.025×1.5 (18 months=1.5 years)
=$50.55
original + intyerest
1348+50.55
$1398.55

606.6$ in total Interest= PrinciplexRatexTime

OK GUYS I WOULD LIKE SOMEONE TO PLUG IN THE VALUES FOR ME PLEASE FOR X TO MAKE THIS TRUE SO I CAN GRAPH THE EXPONENTIAL GRAPHS. SO Y=-4+ SQAURE ROOT X+2 SO AT LEAST 4 X VALUES TO MAKE THIS TRUE AND FOR THIS ONE PLEASE:Y=2+SQUARE ROOT OF X+1 AT LEAST 4 X VALUES THAT MAKE THIS TRUE SO I CAN PLOT IT ON THE GRAPH

Answers

we see that we have some nasty sqrt signs
try to use x values that yield perfect squares inside the sqrt sign like 1,4,9,16, or ones that make the inside 0

first one

y=-4+√(x+2)
try some nice values for ease of graphing

ok so try x=-2
y=-4
(-2,-4)

x=-1
y=-3
(-1,-3)

x=-1
y=-3
(-1,-2)

if x=7
y=-1
(7,-1)

if x=14
y=0
(14,0)

so we have
(-2,-4)
(-1,-3)
(2,-2)
(7,-1)
(14,0)

second one
y=2+√(x+1)

if x=-1
y=2
(-1,2)

if x=0
y=3
(0,3)

if x=3
y=4
(3,4)

if x=8
y=5
(8,5)

we have

(0,3)
(-1,2)
(3,4)
(8,5)

first one
y=-4+√(x+2)
so we have
(-2,-4)
(-1,-3)
(2,-2)
(7,-1)
(14,0)

second one
y=2+√(x+1)
(0,3)
(-1,2)
(3,4)
(8,5)

First question do u have a graphing calculator?? If so, go to the y= menu and type in 2+ (2nd x^2) square root of x+1then hit 2nd and then graph find any coordinate pair you want or just hit the graph button and look at the exponential graph Keep in mind I am explaining the steps to take on a Texas Instruments TI84 plus CE calculator Good luck!!

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