Charles can do a job in 1 hour, Bill can do the same job in 2 hours, and Bob can do the jobin 3 hours. How long does it take them to do the job working together?

Answers

Answer 1

Answer: 1hr +2hr+3hr is 6 hours job done

Answer 2

Answer: 1+2+3=6 hours
bill Charles and bob

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What value do you get when you evaluate the composition "f of g of negative threef (x) -3x2-5 g (x) --4xf(g(-3))

Answers

f o g is how it's written with the -3 it means

f(g(-3))=what

so first -3 into g(x)
g(-3)=-4(-3)
g(-3)=12

sub for x in f(x)
f(12)=-3(12)^2-5
f(12)=-3(144)-5
f(12)=-432-5
f(12)=-437

Sheila bought 10 1⁄2 oz of almonds for $3.36. How much did the almonds cost per ounce?

Answers

3.36/10.5 = 0.32

It costs $0.32 an ounce

Algebra question please show work :)

Answers

Here is the solution to the equation.

2x+4=16

2x=16-4

2x=14

x=14/2

x=7

Great question! :)

What will be the perimeter and the area of the rectangle below if it is enlarged using a scale factor of 7.5?A rectangle is shown. The length of the rectangle is labeled as 8 cm, and the width is labeled as 6 cm.

Perimeter = 58 cm, area = 209.25 cm2

Perimeter = 58 cm, area = 2,700 cm2

Perimeter = 210 cm, area = 2,700 cm2

Perimeter = 210 cm, area = 209.25 cm2

Answers

Answer with Step-by-step explanation:

The perimeter(P) and area(A) of a rectangle is given by:

P=2(l+w)

A=lw

Where l is the length and w is is the width of the rectangle

original length and width

l=8 cm

w=6 cm

New length and width

l'=8×7.5=60 cm

w'=6×7.5=45 cm

P=2(60+45)

=210 cm

Area=60×45

=2700 cm²

Hence, Correct option is:

Perimeter = 210 cm, Area = 2,700 cm²

enlarged by a scale factor of x means times each dimention by x

P=2(L+W)
A=LW

original L and W
L=8cm
W=6cm

new
nL=8*7.5=60cm
nW=6*7.5=45cm

newP=2(60+45)=2(105)=210cm
newA=(60)(45)=2700cm^2

3rd from top is answer

Suppose your gasoline tank holds 18 gallons of fuel. Your tank is currently 20% full. How many gallons of fuel do you need to add to fill the tank?

Answers

I believe the answer is 14.4 gallons of fuel.
To get the answer, I did x over 18 = 20% of 100. You cross-multiply to get 100x = 360. Divide each side by 100 to get x = 3.6. Subtract that from 18 gallons to get your answer.

If u have a coulculater do 18 times .20 and that will give u the answer

A chemist is mixing one solution that is 32% sodium and another solution that is 12% sodium how many liters of each type should the chemist use to produce 50 l of the solution that is 20% sodium

Answers

In order to solve the amount of each solution, we need to set up equations. We do as follows:

Let x = solution with 32% sodium
y = solution with 12% sodium

Overall balance
x + y = 50

Component balance
.32x + .12y = 50(.20) =10

Solving simultaneously,

x = 20
y = 30

Hope this answers the question. Have a nice day.

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