Answer:
678.24 cubic centimeters
Step-by-step explanation:
1 + {[(1 * 0.5) x 12] x 3}
1 + {[0.5 x 12] x 3}
1 + {6 x 3}
1 + 18
19
I'm not sure if that's a 1.000 or 1,000 so:
1,000 + {[(1,000 * .5) x 12] x 3}
1,000 + {[500 x 12] x 3}
1,000 + {6,000 x 3}
1,000 + 18,000
19,000
Answer : 100 meters 2:35/mile or 1:36/km 2:49/mile or 1:45/km
200 meters 2:35/mile or 1:36/km 2:52/mile or 1:47/km
400 meters 2:54/mile or 1:48/km 3:12/mile or 1:59/km
800 meters 3:23/mile or 2:06/km 3:48/mile or 2:21/km
1,500 meters 3:41/mile or 2:17/km 4:07/mile or 2:34/km
1 mile 3:43/mile or 2:19/km 4:13/mile or 2:37/km
5K 4:04/mile or 2:31/km 4:34/mile or 2:50/km
10K 4:14/mile or 2:38/km 4:45/mile or 2:57/km
Half Marathon
(13.11 miles / 21.098 km) 4:27/mile or 2:46/km 4:58/mile or 3:05/km
Marathon
(26.22 miles / 42.195 km) 4:41/mile or 2:55/km 5:10/mile or 3:13/km
Step-by-step explanation: sorry if this is wromg :/ ( but if it is please add me as the brainist answer )
Answer:
20kg of 25% copper alloy
30kg of 60% copper alloy
Step-by-step explanation:
There are 2 kinds of metal, first metal(A) have 25% copper while the second metal(B) has 60% copper. The metalworker want to create 50kg of metal, which means the total weight of both metals is 50kg (A+B = 50). The metalworker also want the metal made of a 46% which is 23kg(0.25A + 0.6B = 0.46*50). From these sentences, we can derive 2 equations. We can solve this with substitution.
A+B = 50
A= 50-B
Let's put the first equation into the second.
0.25A + 0.6B = 0.46 *50
0.25(50-B) + 0.6B =23
12.5 - 0.25B + 0.6B =23
0.35B=23 -12.5
B= 10.5/ 0.35= 30
Then we can solve A
A= 50-B
A= 50-30
A=20
Your answer is $2
She spent $2 on each pencil 2 x 7 = 14 take away 14 from 24 you get 10
