If 6x=23^2-17^2 then what is x<br>PLSS HELP I AM WEAK IN MATHEMATICS

Manav is painting a rectangular room and the dimensions of this room are given by x,y and z feet. Manav takes 8 hours to paint a

zhenek [66]

Answer:

B) 36 cubic feet

Step-by-step explanation:

Dimensions of the room are x, y and z feet. It is given that x = 6 feet.

Manav took 8 hours to paint the wall with dimensions x and z.

This means, in 8 hours Manav painted area = xz = 6z

In 1 hour Manav painted area = $\frac{6z}{8}$

Manav took 4 hours to paint the wall with dimensions y and z.

This means, in 4 hours Manav painted area = yz

In 1 hour Manav painted area = $\frac{yz}{4}$

Manav took 12 hours to paint the ceiling with dimensions x and y.

This means, in 12 hours Manav painted area = xy = 6y

In 1 hour Manav painted the area = $\frac{6y}{12}=\frac{y}{2}$

Since, Manav works at constant rate, this means the worked done in 1 hour in all 3 cases would be the same. So we can write:

$\frac{6z}{8}=\frac{yz}{4}=\frac{y}{2}$

Using the first two equations, we get:

$\frac{6z}{8}=\frac{yz}{4}\\\\ \frac{6}{8}=\frac{y}{4}\\\\ y=\frac{6}{8} \times 4\\\\ y = 3$

Using the last two equations, we get:

$\frac{yz}{4}=\frac{y}{2}\\\\ \frac{z}{4}=\frac{1}{2}\\\\z=2$

So, we have the follwoing dimensions of the room:

x = 6 feet

y = 3 feet

z = 2 feet

So the volume of the room is = 6 x 3 x 2 = 36 cubic feet

7 0

3 years ago

Slope 5/2; (-6,7), what is the answer?

nirvana33 [79]

Answer: y = 5/2 x + 22

Step-by-step explanation: Use the formula y=mx+b in order to solve for b. Then plug in the known values.

Graph down below.

I hope this help you out. If not, I am so sorry.

7 0

3 years ago

What is a graph of the ordered pairs one from the corresponding terms of pattern as powder teeth pattern as starts at 10 and use

My name is Ann [436]

Answer:

fhurfhurhfnrnfjernjenr;lvnjfvkjnenvfnvjfdntgk,dtrmhg

Step-by-step explanation:

6 0

3 years ago

Pls complete fast and be sure of ur answer

jekas [21]

The number of students which are either in algebra or physics are 23 which is the second option.

Given that:-

Total number of students = 30

Number of students both in physics and algebra = 4

Total number of students in Physics = 12

Total number of students in Algebra = 19

We have to find the number of students which are either in algebra or physics.

Number of students in physics but not in algebra = 12 - 4 = 8

Number of students in algebra but not in physics = 19 - 4 = 15

We know that:-

Number of students which are either in algebra or physics = Number of students in physics but not in algebra + Number of students in algebra but not in physics

Hence, we can write,

Number of students which are either in algebra or physics = 8 +15 = 23.

We can also do this question using Venn diagram.

To learn more about Venn diagram, here:-

brainly.com/question/1605100

#SPJ1

4 0

1 year ago

Log 9-log 4÷log 3-log 2

Minchanka [31]

Step-by-step explanation:

whoever created the original question and then probably the people copying it need to focus on writing these things correctly.

I assume this means

log(9) - log(4) ÷ log(3) - log(2)

or is anything combined in brackets ? like it could be e.g. log(4 ÷ log(3)). just as example.

and I guess we mean logarithm to the base of 10, right ?

anyway, if my assumptions are correct, then we only need to follow the regular priorities of mathematical operations :

1. brackets

2. exponents

3. multiplications and divisions

4. additions and subtractions

so, we need to start with the division in the middle, and then do the subtractions.

log(4) ÷ log(3) = 1.261859507...

log(9) - 1.261859507... = -0.307616998...

-0.307616998... - log(2) = -0.608646993...

or was the original question

(log(9) - log(4)) ÷ (log(3) - log(2))

?

that would be way more interesting.

we use the rules of logarithm :

e.g.

log(a×b) = log(a) + log(b)

log(a/b) = log(a) - log(b)

so, we have then

log(9/4) ÷ log(3/2)

and that is equal to

log(3/2 × 3/2) ÷ log(3/2)

(log(3/2) + log(3/2)) ÷ log(3/2) = 1 + 1 = 2

if that is the case, you really, REALLY need to pay more attention to brackets and other symbols in problem definitions.

6 0

2 years ago

If 6x=23^2-17^2 then what is xPLSS HELP I AM WEAK IN MATHEMATICS​

If 6x=23^2-17^2 then what is xPLSS HELP I AM WEAK IN MATHEMATICS