Write five numbers that round up to 600

Answers

Answer 1

Answer: 599.5
599.6
599.7
599.8
599.9

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BEST GETS BRAINLEST.A construction engineer needs to make 25 square concrete slabs with sides of length x feet and a height x - 3 feet. If the engineer can use at most 350,000ft^3 of concrete, what should the dimensions of each slab be, to the nearest foot?

a. Write an expression for the volume of all the slabs

b. What should x equal, to the nearest foot?

Answers

Answer:

x ≈ 118 ft

Step-by-step explanation:

To get an expression for the volume of all slabs, we can use the formula of volume of cuboid 'V', which is equal to the product of its length 'x', breadth 'x' and height 'x-3' i.e.

$V = x.x.(x-3)$

For 25 slabs,

$V = 25x.x.(x-3)$

Since, V cannot be more than 350,000 $ft^(3)$ , therefore,

$350000 = 25x^(2) (x-3)$

which can be written as:

either:

$350000 = 25x^(2)$

$x = \sqrt{ (350000)/(25)$

x ≈ 118 ft

or:

$x - 3 = 350000$

$x = 350003$

which is not possible.

Hence x should be 118 ft

We know that the given side lengths are x and the height is x.

Therefore, the area of the base = $A = x * x$

$Formula =\ \textgreater \ volume = length*width*height$

$To \ find \ the \ volume \ of \ 1 \ slab, \ multiply \ by \ the \ height$ $x -3$

$= x*x*(x-3)$

$Volume \ of \ 25 \ slabs =$ $25*x^2*(x-3)=350000$

$350,000/25 = 14,000$

$x^3 - 3x^2 - 14000$

$= 25.14$

$Rounded => x=25$

Expand and simplify (x+6)(x+6)

Answers

Answer:

2x+12

Step-by-step explanation:

Jill earns $15 per hour babysitting plus a transportation fee of $5 per job. Write a formula for E, Jill's earnings per babysitting job, in terms of h, the number of hours for a job. Then solve your formula for h.

Answers

Jill earns $15 per hour babysitting plus a transportation fee of $5 per job. Write a formula for E, Jill's earnings per babysitting job, in terms of h, the number of hours for a job

E is the Jill's earnings

h is the number of hours for a job

$15 is the constant rate per hour so we use linear equation

y= mx+b, Instead of x and y we use h and E

E = mh + b

m is the slope (constant rate $15)

b is the transportation fee $5

So equation becomes E = 15h + 5

Now we solve for h

E = 15h + 5 (subract 5 on both sides)

E - 5 = 15h (divide by 15 )

$(E - 5)/(15) = h$

We solved for h , $h = (E - 5)/(15)$

since you know the amount of what she earns you would use the number 15 and you dont know how long she worked you would put "x" next to the 15. so you would have 15x and then put a plus 5 to show her transportation fee. so you would have the equation of 15x+5:)

Emma ran 3.5 kilomometers, while grace ran 380 meters who ran further