Answer:
(13c-5b)(a+4)
Step-by-step explanation:
Since both (13c) and (-5b) are being multiplied by (a+4), we can factor both of them out and put them in a bracket.
13c(a+4)−5b(a+4) = (13c-5b)(a+4)
9514 1404 393
Answer:
1 : 400
Step-by-step explanation:
A meter is 100 cm, so 4 m = 400 cm.
1 cm : 4 m = 1 cm : 400 cm = 1 : 400
Answer:-3
Step-by-step explanation:
m=y2 - y1
m= x2-x1
-4= y1
2=y2
2--4=6
x2=6
x1=8
6-8=-2
6/-2=-3
<u>Slope is -3!!</u>
Look up the wikihow on how to find slope, helped me a ton
Answer:
75 boxes of standard varieties and 40 boxes of deluxe varieties.
Step-by-step explanation:
Let x be the number of standard variety and y be the number of the deluxe variety of the strawberry,
∵ Total number of strawberries = 115,
⇒ x + y = 115
⇒ x = 115 - y -----(1),
Total spending amount is $ 700, in which each standard variety costs $ 4 and deluxe variety costs $ 10,
⇒ 4x + 10y = 700 ----(2),
From equation (1),
4(115-y) + 10y = 700
460 - 4y + 10y = 700
460 + 6y = 700
6y = 240
⇒ y = 40
Again from equation (1),
x = 115 - 40 = 75
Hence, there are 75 boxes of standard varieties and 40 boxes of deluxe varieties.
Answer:
4 mph
Step-by-step explanation:
Travel time is proportional to distance and inversely proportional to speed. If c represents the speed of the current in miles per hour, an equation for the total trip time is ...
825/(29 -c) +825/(29 +c) = 58 . . . . . . hours travel time
825(29 +c) +825(29 -c) = 58(29 -c)(29 +c)
58c² -928 = 0 . . . . . . . rearrange to standard form
58(c -4)(c +4) = 0 . . . . factor
Values of c that satisfy this equation are 4 and -4. For the purpose here, we'll choose the positive solution.
The speed of the current is 4 miles per hour.
