Answer:
weeks.
Step-by-step explanation:
We have been given that a 
km stretch of road needs repairs. Workers can repair 
kilometer of road per week.
To find the number of weeks it will take to repair the stretch we will divide by
Upon converting our mixed fractions into improper fractions we will get,
Dividing a fraction with another fraction is same as multiplying the 1st fraction with the reciprocal of second fraction.
Therefore, it will take weeks to repair the stretch of the road.
Answer:
Step-by-step explanation:jdjdjsjsjsjssjjsns
Three unknowns requires three equations to solve . . .
1) n + d + q = 30
2) d = 2n
3) (0.05)n + (0.10)d + (0.25)q = 5.50
* plug 2) into 1) and solve for q
n + 2n + q = 30
3n + q = 30
q = 30 - 3n
* now we have variables d and q expressed in terms of n, so we plug those equations into 3) and solve for n . . .
0.05n + 0.10(2n) + 0.25(30 - 3n) = 5.50
0.05n + 0.20n + 7.50 - 0.75n = 5.50
(0.05 + 0.20 - 0.75)n + 7.50 = 5.50
-0.50n + 7.50 = 5.50
-0.50n = 5.50 - 7.50
-0.50n = -2.00
n = -2.00/-0.50 = 4
d = 2n = 2(4) = 8
q = 30 - 3n = 30 - 3(4) = 30 - 12 = 18
The answer is . . .
n = 4 nickels
d = 8 dimes
q = 18 quarters
. . . for a total of (4 + 8 + 18) = 30 coins
. . . 8 dimes is twice 4 nickels
. . . $0.05(4) + $0.10(8) + $0.25(18) = $5.50
Answer:
x>-4
Step-by-step explanation:
|x+7| is just x+7
x+7>3
-7 on both sides
x>-4
3634 rounds up to 4000 and 304 rounds down to 300. 4000 * 300 = 1,200,000
