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EastWind [94]
3 years ago
11

8. On a trip, a student drove 40 miles per hour for 2 hours and then drove 30 miles per hour for 3

Mathematics
2 answers:
skad [1K]3 years ago
8 0

Answer:

34

Step-by-step explanation:

MrRa [10]3 years ago
3 0
I have been trying but i am pretty sure it is 36 i think
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What is the length of side c, given a = 10, b = 8, and c = 105°?
posledela
We can calculate using cosinus method in triangle
c² = a² + b² - 2ab cos c

Plug in the number to the formula
c² = a² + b² - 2ab cos c
c² = 10² + 8² - 2(10)(8) cos 105°
c² = 100 + 64 - 160 cos 105°
c² = 164 - 160 (-0.26)
c² = 164 + 41.6
c² = 205.6
c = √205.6
c =14.34

C is 14.34 unit length
5 0
3 years ago
A factory increased its production by 22.5 % and produced 49000tonnes. How many tonnes was it producing before?
dezoksy [38]

Sería 37975 porque le tienes que restar el procentaje que se le ha añadido para saber cómo era antes

4 0
3 years ago
An element with mass 780 grams decays by 16.3% per minute. How much of the element is remaining after 16 minutes, to the nearest
vitfil [10]
Exponential decay is a very common process especially when we are talking about radioactive materials. So, there is already a common formula for this type of behavior which is written below:

A = Pe^-rt
where
A is the amount left after time t
P is the initial amount at t=0
r is the rate

Substituting the values,
A = (780 g)(e^-0.163*16)
A = 57.5 g
8 0
4 years ago
Find the area of the figure.
Gnoma [55]
15.5 x 12.4 = 192.2 so the answer is 192.2 square feet.
8 0
3 years ago
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Pls pls pls pls pls pls pls pls pls helppp meee i will give BRAINLIEST!!!!!!
vichka [17]

Answer:

D. x = 22.5

Step-by-step explanation:

4 0
4 years ago
Read 2 more answers
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