3 years ago

The sum of 8 times a number and 9 equals 3. Use the variable W for the unknown number

Mathematics

1 answer:

olga55 [171]3 years ago

7 0

Answer: W= -0.75
Explanation: 8 x -0.75= -6
-6 + 9= 3

You might be interested in

Anybody know this ???

serg [7]

Answer:

suurreeeeee let me finish and iwill give you the answer

6 0

3 years ago

At this rate if you have been in the car for 12.3 hours how many miles have you travled?

antoniya [11.8K]

Answer:

738

Step-by-step explanation:

3 0

3 years ago

Let R be the region bounded by the following curves. Let S be the solid generated when R is revolved about the given axis. Ifpo

steposvetlana [31]

The two curves $y=x$ and $y=x^{1/15}$ intersect at $x=0$ and $x=1$ , with $x^{1/15}\ge x$ over $0\le x\le1$ .

Washer method

$\displaystyle\pi\int_0^1\left(\left(x^{1/15}\right)^2-x^2\right)\,\mathrm dx=\pi\int_0^1\left(x^{2/15}-x^2\right)\,\mathrm dx=\pi\left(\frac{15}{17}-\frac13\right)=\boxed{\frac{28\pi}{51}}$

Shell method

We have $y=x^{1/15}\implies x=y^{15}$ . The curves $x=y$ and $x=y^{15}$ intersect at $y=0$ and $y=1$ , with $y\ge y^{15}$ over $0\le y\le1$ .

$\displaystyle2\pi\int_0^1y\left(y-y^{15}\right)\,\mathrm dy=2\pi\int_0^1\left(y^2-y^{16}\right)\,\mathrm dy=2\pi\left(\frac13-\frac1{17}\right)=\boxed{\frac{28\pi}{51}}$