Answer:
10 by 8
Step-by-step explanation:
The perimater is 80 so number are added. The area would be a square 10 by 8 if you multiply 10 by 8 it will give you 80.
Answer:
2 × 10 g
Step-by-step explanation:
The lethal dose 50 (LD50) of Coumarin is 293 mg/kg body mass. The amount of Coumarin that a 70 kg student would have to ingest to reach the LD50 is:
70 kg body mass × (293 mg/kg body mass) = 20510 mg
1 gram is equal to 1000 milligrams. The mass (in grams) corresponding to 20510 milligrams is:
20510 mg × (1 g/ 1000 mg) = 20.51 g ≈ 2 × 10 g
The correct answer is 32.5
She should save 62,375 a month to reach her goal
7,485.00 ÷ 12
For c using proportionality of corresponding sides you can writing
(3c+4) 9
--------- = -------
20 15
(3c+4) 3
---------- = ------ cross multiple
20 5
5(3c+4) = 20*3 divide both sides by 5
3c+4=4*3
3c+4=12
3c = 8
c = 8/3
for d you can writing
(2d-3) 9
--------- = ------
12 15
(2d-3) 3
--------- = ------- cross multiple
12 5
5(2d-3) = 12*3
10d -15 = 36
10d = 51
d = 51/10
d = 5,1
hope helped
