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Inessa [10]
3 years ago
13

Lisa can shovel snow from her driveway in 65 minutes. tom can do the same job in 55 minutes. how long would it take lisa and tom

to shovel the driveway if they worked​ together?
Mathematics
1 answer:
Paraphin [41]3 years ago
5 0
65+55=120
120÷2=60
So, it take them 60mins if they worked together.
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Brach and Larue is a home goods store chain, and it is about to introduce a new convection oven that’s expected to sell very wel
zvonat [6]

Answer:

\$12,465

Step-by-step explanation:

The functions for cost and revenue are given below:

Projected \:Revenue,R(x)=  -13.85x^2 + 1660x\\$Projected Cost, C(x)=55400 -279x\\Projected Profit = Revenue-Cost=R(x)-C(x)\\=-13.85x^2 + 1660x-(55400 -279x)\\=-13.85x^2 + 1660x-55400 +279x\\P(x)=-13.85x^2 + 1939x-55400

The profit will be maximized at its <u>line of symmetry,</u>x=-\dfrac{b}{2a}<u />

From P(x), a=-13.85, b=1939

<u>Line of symmetry,</u>

<u />x=-\dfrac{b}{2a}=-\dfrac{1939}{2(-13.85)}=70<u />

<u>The maximum profit that can be made will occur when x=70</u>

<u />P(x)=-13.85x^2 + 1939x-55400\\P(70)=-13.85(70)^2 + 1939(70)-55400\\=\$12,465<u />

The maximum profit that can be made form the sales of the oven is $12,465.

6 0
3 years ago
How do you write 0.0006363 in scientific notation?
Wewaii [24]

Answer:

Step-by-step explanation:

Proper scientific notation means that there is only 1 number to the left of a decimal and everything else to the right of it. Also, because the number is initially less than 1, the exponent will be a negative one. We have to move the decimal 4 places to the right in order to get the 6 to the left of it, so in correct scientific notation format, we have

6.363*10^{-4

5 0
3 years ago
5) 5 ft<br> A) 38 ft<br> C) 18 ft<br> B) 15<br> D) 16 ft
Mrrafil [7]

Answer:

the answer is a

Step-by-step explanation:

3 0
3 years ago
What is the slope of a line perpendicular to the line with a slope of 1/2
frosja888 [35]

Answer:

-2

Step-by-step explanation:

To answer this, just take the negative reciprocal of 1/2.  We obtain -2.

7 0
4 years ago
H
timama [110]
I’m not really sure it’s really complicated
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3 years ago
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