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3 years ago

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

Mathematics

2 answers:

shtirl [24]3 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]3 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:-

$\\ \\$

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

$\\ \\$

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

$\\ \\$

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

$\\ \\$

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

$\\ \\$

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

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Marianna [84]

The value of the expression is 252

Step-by-step explanation:

The expression that we have to evaluate in this problem is

$7x^2y$

And we have toe valuate it for

x = 3

y = 4

In order to evaluate the expression, let's substitute the values of x and y into it:

$7x^2y=7\cdot (3)^2\cdot (4)$

First, we calculate the square of 3, which is:

$3^2 = 3\cdot 3 = 9$

Substituting into the expression,

$7\cdot 3^2 \cdot 4 = 7\cdot 9 \cdot 4$

Now we multiply everything and we get:

$7\cdot 9 \cdot 4 = 252$

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4 years ago

Can someone please help me, i'm like freaking out!?!?!?! YOU WILL GET BRAINLIEST!!!!!

Levart [38]

Answer:

x^2 + 6x + 9 = 16

(x + 3)^2 = 16

x + 3 = +-4 ---> x = -7 or x = 1

4 0

3 years ago

I need help I put 30 points for whoever helps me

artcher [175]

Answer:

$y=-x+1$

Step-by-step explanation:

Slope can be represented as rise over run (change y-values over change in x-values). Since the y-value is changing by -2 every time the x-value is changing by 2, the slope of the line must be $\frac{-2}{2}=-1$ .

In slope-intercept form $y=mx+b$ , $m$ represents the slope of the line, $b$ represents the y-intercept, and $(x, y)$ represent the coordinates of any point the line passes through.