All categories

2 years ago

PLEASE HELP !!! CORRECT ANSWER GETS BRAINLIEST!!!!

Mathematics

2 answers:

shtirl [24]2 years ago

8 0

Answer:

area of this circle: 490.6 inch²

Step-by-step explanation:

area of circle: π(radius)²

Here the diameter is given 25 inch, so the radius will be half: 25/2 → 12.5 in

using the formula:

3.14(12.5)²

490.625 inch²

490.6 inch²____rounded to nearest tenth.

Arte-miy333 [17]2 years ago

5 0

<h3>Given:</h3>

$\\$

Diameter of circle = 25in.

$\\$

$\\$

Area of circle.

$\\$

<h3>Explanation:</h3>

$\\$

So as Diameter is given , let's covert it into radius.

We know:

$\\$

$\bigstar \boxed{ \rm Diameter \: of \: circle \: = 2 \times radius}$

$\\ \\$

$\hookrightarrow \sf Diameter \: of \: circle \: = 2 \times radius \\$

$\\ \\$

$\hookrightarrow \sf 25 = 2 \times radius \\$

$\\ \\$

$\hookrightarrow \sf radius \: = \dfrac{25}{2}$

$\\ \\$

$\hookrightarrow \bf radius \: = 12.5 in.$

Now Let's find circumference of circle:

we know:-

$\\ \\$

$\bigstar \boxed{ \rm Circumference \: of \: circle \: = \pi radius^2}$

$\\$

So:-

$\\ \\$

$\dashrightarrow \sf Circumference \: of \: circle \: = \pi radius^2\\$

$\\ \\$

$\dashrightarrow \sf Circumference \: of \: circle \: = 3.14\times (12.5)^2\\$

$\\ \\$

$\dashrightarrow \sf Circumference \: of \: circle \: = 3.14 \times 156.25\\$

$\\ \\$

$\dashrightarrow \bf Circumference \: of \: circle \: = 490.63\\$

$\\ \\$

$\bf\dag \underline {\blue{\frak{ Circumference \: of \: circle \: = 490.63 in(approx)}}}$

You might be interested in

How to divide 0.13 by 0.25

viktelen [127]

Divide 0.13 by 0.25 and your answer should be 0.52.

7 0

3 years ago

Determine which functions have two real number zeros by calculating the discriminant, b2 – 4ac. Check all that apply.

pantera1 [17]

Step-by-step explanation:

We need to write the function that have two real number zeros by calculating the discriminant i.e. $b^2-4ac$ .

We know that,

If D>0 the roots are real and unequal

If D= 0 roots are real and equal

If D< 0 roots are imaginary or not real and unequal

Function (1)

$f(x)=x^2 + 6x + 8\\\\D=6^2-4\times 1\times 8\\\\D=4$

D>0 the roots are real and unequal

Function (2)

$g(x)=x^2 + 4x + 8\\\\D=4^2-4\times 1\times 8\\\\D=-16$

D<0 the roots are real and unequal

Function (3)

$h(x)=x^2 -12x+32\\\\D=(-12)^2-4\times 1\times 32\\\\D=16$

D>0 the roots are real and unequal

Function (4)

$k(x)=x^2 +4x-1\\\\D=(4)^2-4\times 1\times (-1)\\\\D=20$

D>0 the roots are real and unequal

Function (5)

$p(x)=5x^2 +5x+4\\\\D=(5)^2-4\times 5\times 4\\\\D=-55$

D<0 the roots are real and unequal

Function (6)

$t(x)=x^2 -2x-15\\\\D=(-2)^2-4\times 1\times (-15)\\\\D=64$

D>0 the roots are real and unequal

(1),(3),(4) and (6) have two real number zeroes.

5 0

3 years ago

Tracy is finding the equation of a median-median line. She found that the equation of the line through the first and third summa

rodikova [14]

<span>1) Find the equation of the line that passes through (x1, y1) and (x3, y3).
We have it: </span>y = 0.4x + 38<span>2) Find the equation of the line parallel to the previous line that passes through (x2, y2).
</span><span>That is: y = 0.4x + 59
</span><span>3) Find the weighted average of the
y-intercepts. b=(b1+b2+b1)/3 = (38+59+38)/3
b= 45
The median-median line is the line parallel to the previous two lines with the weighted y-intercept.Hence, Y = 0.4 x + 45 is the answer</span>

7 0

3 years ago

The temperature and Vancouver Yesterday was 15° today it is -5° how much did the temperature decrease?

Crazy boy [7]

Answer:

Step-by-step explanation:

All I did was add 15 and 5 which equals 20 which is the correct answer

3 0

3 years ago

In NC, Henderson County has a land area of about 375 square miles and Perquimans County has a land area of about 250 square mile

kirza4 [7]

375 mi^2 15

--------------- = ------ = 3/2

250 mi^2 10

The ratio of the population of Henderson County to that of Perquimans is 3/2.

4 0

3 years ago

PLEASE HELP !!! CORRECT ANSWER GETS BRAINLIEST!!!!​

PLEASE HELP !!! CORRECT ANSWER GETS BRAINLIEST!!!!