Answer:
[2,3,4]
Step-by-step explanation:
all these are <10
Frances can complete 91oil changes in 7 days. How many oil changes can Frances complete in 11days? oil changes
2 answers:
Answer:
143 oil changes
Step-by-step explanation:
Let's find out Frances' rate per 1 day. We can set up a proportion, since we know he can do 91 oil changes in 7 days:
, where x is the number of oil changes Frances can do in 1 day
Cross-multiply:
91 * 1 = 7 * x
7x = 91
x = 91/7 = 13
So Frances can do 13 oil changes in 1 day. Set up another proportion to find how many oil changes he can complete in 11 days:
, where y is the number of oil changes Frances can do in 11 days
Cross-multiply:
13 * 11 = 1 * y
y = 143
The answer is 143 oil changes.
Hope this helps!
You might be interested in
Answer:
(2x - 3)(x + 2)
Step-by-step explanation:
Step 1 :
Equation at the end of step 1 :
( + x) - 6
Step 2 :
Trying to factor by splitting the middle term
2.1 Factoring +x-6
The first term is, its coefficient is 2 .
The middle term is, +x its coefficient is 1 .
The last term, "the constant", is -6
Step-1 : Multiply the coefficient of the first term by the constant 2 • -6 = -12
Step-2 : Find two factors of -12 whose sum equals the coefficient of the middle term, which is 1 .
-12 + 1 = -11
-6 + 2 = -4
-4 + 3 = -1
-3 + 4 = 1 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -3 and 4
- 3x + 4x - 6
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (2x-3)
Add up the last 2 terms, pulling out common factors :
2 • (2x-3)
Step-5 : Add up the four terms of step 4 :
(x+2) • (2x-3)
Which is the desired factorization
(2x - 3)(x + 2)