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quester [9]
3 years ago
5

Each square on the grid represents 1 ft². What is the approximate area of this patch of grass? A. about 35 ft² B. about 40 ft² C

. about 45 ft² D. about 50 ft²

Mathematics
2 answers:
larisa [96]3 years ago
5 0
A. about 35 ft I hope this helps you 
Contact [7]3 years ago
5 0
A think i hope it help you
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Hi! i don’t really understand this question. if someone could help me i’d appreciate it!
Shkiper50 [21]

Answer:

Step-by-step explanation:

cute it into separate parts then add the areas together

3 0
3 years ago
A fossilized leaf contains 18% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as
Sati [7]

Answer: The age of the fossilized leaf is 13829 years.

Step-by-step explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  

t = age of sample

a = let initial amount of the reactant = 100

a - x = amount left after decay process = \frac{18}{100}\times 100=18  

a) for completion of half life:  

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{5600years}=0.00012years^{-1}

b) for finding the age

t=\frac{2.303}{0.00012}\log\frac{100}{18}  

t=13829years

The age of the fossilized leaf is 13829 years.

7 0
3 years ago
Jeans are reduced from 28.00 to 18.20 during a sale at a department store. What percentage was the original price reduced?
Natali [406]

Answer:

The original price was reduced 35%

Step-by-step explanation:

we know that

Jeans are reduced from $28.00 to $18.20

In this problem

The original price of 28.00 represent 100%

so

using proportion

Find out what percentage represent the difference between the original price and the new price

\frac{28}{100}=\frac{28-18.20}{x}\\\\x=100(9.8)/28\\\\x=35\%

therefore

The original price was reduced 35%

6 0
2 years ago
I NEED HELP PLEASE DONT SEND ME LINKS TO WEBSITES. ANSWER THE QUESTION HERE THANK YOU.
mote1985 [20]

Answer:

33

Step-by-step explanation:

The two angles add up to 180 degrees because a straight line is 180 degrees

<em>Add both equations and set equal to 180</em>

3m + 138 + 7m +12 = 180

<em>Algebra yeet</em>

<em>Simplify</em>

10m +150 = 180

10m = 30

m = 3

Angle DBC is (7m + 12):

<em>Substitute m = 3</em>

7(3) + 12 = 21 + 12 = 33 degrees

7 0
3 years ago
Plz helppppppp me qwq
ruslelena [56]

Answer: For the first part

1250 = 150

1525 = 183

1850 = 222

2200 = 264

Step-by-step explanation:

6 0
2 years ago
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