3 years ago

19 of 22

Mathematics

1 answer:

professor190 [17]3 years ago

3 0

B: 3(4-3n)

hope this helps

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How do I solve: "1/6y-4= -7"?

Shtirlitz [24]

1/6y - 4 = -7

1/6y = -7 + 4

1/6y = -3

1 = -18y

-18y = 1

answer
y = -1/18

7 0

3 years ago

In ancient egypt, a scribe equated the area of a circle with a diameter of 9 units to the area of a square with a side length of

Rudik [331]

Answer:

$\pi =3.160494$

Step-by-step explanation:

step 1

Find the area of the circle with a diameter of 9 units

we know that

The area of a circle is equal to

$A=\pi r^{2}$

we have

$r=9/2=4.5\ units$ ----> the radius is half the diameter

substitute

$A=\pi (4.5)^{2}$

$A=20.25\pi\ units^2$

step 2

Find the area of a square with a side length of 8 units

we know that

The area of the square is

$A=b^2$

where

b is the length side of the square

we have

$b=8\ units$

substitute

$A=(8)^2=64\ units^2$

step 3

Equate the areas

$20.25\pi=64$

solve for $\pi$

$\pi =\frac{64}{20.25}=3.160494$

5 0

3 years ago

ASAP PLSSS!! <br> Find the slope of the line shown below :

Marta_Voda [28]

Answer:

the slope is 3

Step-by-step explanation:

5 0

3 years ago

How do change 13 1/4 into decimal form

Bess [88]

That would be 13.25, 13+1/4
= 13+(1 divided by 4 which is 0.25)
= 13+0.25
Which is 13.25 so your answer is 13.25, good luck hope that helps :D

7 0

3 years ago

What is the surface area of a sphere with radius 2?

VladimirAG [237]

$\textit{surface area of a sphere}\\\\ SA=4\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=2 \end{cases}\implies \begin{array}{llll} SA=4\pi (2)^2\implies SA=16\pi \\\\\\ SA\approx 50.27 \end{array}$

8 0

3 years ago