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lbvjy [14]
3 years ago
12

If Roberto does a job in 11 hours and with the help of Sarah they can do it together in 2 hours, how long would it take Sarah to

do it alone?
Mathematics
1 answer:
Levart [38]3 years ago
3 0
I think it is seven but im probaly wrong
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You have been hired as a marketing consultant to Johannesburg Burger Supply, Inc., and you wish to come up with a unit price for
BartSMP [9]

Answer:

The demabd function is:

q(p)= -4500p+18000

Step-by-step explanation:

The demand follow the linear equation q(p)=mp+b

1. When p=$2.00 and q=9000, the equation is:

9000=m(2.00)+b     (1)

2. Whe p=$4.00 and q=0, the equation is:

0=m(4.00)+b  (2)

3. Solve equation (1) for b:

9000=2m+b\\9000-2m=2m+2m+b\\9000-2m=b

4. Replace the value of b in equation (2)

0=4m+b\\0=4m+9000-2m\\0=2m+9000\\0-9000=2m+9000-9000\\-9000=2m\\\frac{-9000}{2m}=\frac{2m}{2m}\\ -4500=m

The value of m is 4500

5. Calculate b, replacing m:

0=4m+b\\\\0=4(-4500)+b\\0=-18000+b\\18000=b

The value of b is 18000

3 0
3 years ago
Which equation is false?
aivan3 [116]
C is false. 9 multiplied by 7 equals 63.
7 0
3 years ago
Read 2 more answers
What is the midpoint of a segment whose endpoints are (-5,6) and (-7,2)?
zloy xaker [14]
The answer to the question is b

5 0
3 years ago
The length of a model car is 1/20 of the length of the actual car. If the model. is 8.7 inch long, how long is the actual car? E
madam [21]
This means that if the model is 1 in lengh then th ereal car is 20 times of that or 20 in legnth

so to find the answer, just multiply model by 20
8.7 =model
real=8.7 times 20=174
real car is 174 inches

12 inches=1 foot
conversion factor
1 ft/12in=1=convesion

so
174 times 1/12=14 and 6/12

the answer is 14 feet and 6 inches or 14.5 feet
7 0
3 years ago
Read 2 more answers
What is 1990 divided by 24?
NNADVOKAT [17]
<span>What is 1990 divided by 24?
1990 divided by 24 is 82 with a remainder of 22 or 83 r</span><span>ounding to the whole number.</span>
4 0
3 years ago
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