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3 years ago

Help pleaseee!!!!!!!!

Mathematics

1 answer:

irina [24]3 years ago

8 0

The line equation is Y= - 1/2x +4

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A person came to work at 7:30am went out at 11:45am had lunch came in at 12:30pm and left at 5:15pm. How many hours did this per

Julli [10]

Answer:

9 hours

Step-by-step explanation:

if they came in at 7:30 a.m and leaves at 11:45 a.m they have been there for 4 hours and 15 minutes.

If they arrive at 12:30 p.m and leave at 5:15 p.m they have been there for 4 hours and 45 minutes

so in total they have been there for 9 hours

3 0

3 years ago

At the moment a hot iron rod is plunged into freezing water, the difference between the rod's and the water's temperatures is 10

Papessa [141]

Answer:

$D(t)=100(0.4)^t$

Step-by-step explanation:

The temp is 100 at time t = 0

After 1 sec, the temp difference would be:

$100-(\frac{100-60}{100})$

After 2 sec, the temp difference would be:

$100-(\frac{100-60}{100})^2$

Similarly for 3 seconds, 4 seconds etc.

We notice that the parenthesis part is 40% of it, so we can also write:

100(40%)^t,

where

t is the time

40% can be written as 40/100 = 0.4

SO, the function is:

$d(t)=100(0.4)^t$

0 0

3 years ago

Read 2 more answers

help me if you can...20-22 the midpoint M and one endpoint of GH are given. find the coordinates of the other endpoint.

kenny6666 [7]

Midpoint

x = (x1 + x2)/2

y = (y1 + y2)/2

19)

x = (x1 + x2)/2 = (5 + 4 )/2 = 4.5

y = y = (y1 + y2)/2 = (-6 + 3)/ 2 = -3/2= -1.5

Answer: Midpoint (4.5, -1.5)

20)

x = (x1 + x2)/2 = (-3 -2 )/2 = -2.5

y = y = (y1 + y2)/2 = (7 + 5)/ 2 = 6

Answer: Midpoint (-2.5, 6)

21)

x = (x1 + x2)/2 = (-2 + 8 )/2 = 3

y = y = (y1 + y2)/2 = (9 + 0)/ 2 = 4.5

Answer: Midpoint (3, 4.5)

22)

x = (x1 + x2)/2 = (-4 - 13/2 )/2 = -5.25

y = y = (y1 + y2)/2 = (1 - 6 )/ 2 = -2.5

Answer: Midpoint (-5.25, -2.5)

6 0

3 years ago

Consider AWHY below.

pshichka [43]

73.0

Step-by-step explanation:

tan 67°=O/A=h/31

h=31tan67°

h=73.0

4 0

3 years ago

at a local fitness center, members paya a $6 membership fee and $5 for each aerobics class. nonmembers pay $6 for each aerob

Anna007 [38]

The members 6 classes will be the same price of 11 nonmember classes

7 0

3 years ago