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2 years ago

Find the value of x in the equation 9-4x=57

Mathematics

2 answers:

Mila [183]2 years ago

7 0

9-4x=57
-9 -9
-4x=48
______
-4 -4
x=-12

kirill115 [55]2 years ago

5 0

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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

These box plots show daily low temperatures for a sample of days in two

Masteriza [31]

Answer

A. The median for town A, 20, is less than the median for town B, 30°

Step-by-step Explanation:

The median of town A and town B, as can be observed from box plots in the diagram attached below, can be gotten by locating the data points where the line divides the box into 2.

For town A, the data point at which a line divides the box is at 20⁰, while for town B, the data point at which the line divides the box is at 30⁰.

Median for town A is 20⁰, while median for town B is 30⁰. Therefore, the statement that most appropriately compare the centers is A. "The median for town A, 20, is less than the median for town B, 30°".