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Ainat [17]
3 years ago
10

Find the circumference of a circle with radius 1.4 in. long. Then use the approximation 3.14 for π and approximate the circumfer

ence.
Mathematics
1 answer:
Art [367]3 years ago
7 0
The expression for the circumference of the circle is 2πr, where π is approximately 3.14 and the r is the radius of the circle, 1.4 inches. So the circumference of the circle is 2*1.4*3.14=8.792. So the circumference of the circle is 8.792 inches.
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Two triangles with the same corresponding side lengths will be congruent is known as the ____.? Need help
erma4kov [3.2K]

SSS or Side Side Side Theorem. 

We have congruent triangles when corresponding sides are congruent; we call it a theorem but that's pretty much the definition of congruent triangles.


3 0
3 years ago
Read 2 more answers
Simplify the rational expression. State any restrictions on the variable n^4-11n^2+30/ n^4-7n^2+10
djyliett [7]
To factor both numerator and denominator in this rational expression we are going to substitute n^{2} with x; so n^{2} =x and n ^{4} =  x^{2}. This way we can rewrite the expression as follows:
\frac{n^{4}-11n^{2} +30 }{n^{2}-7n^{2} +10 } =  \frac{ x^{2} -11x+30}{ x^{2} -7x+10}
Now we have two much easier to factor expressions of the form a x^{2} +bx+c. For the numerator we need to find two numbers whose product is c (30) and its sum b (-11); those numbers are -5 and -6. (-5)(-6)=30 and -5-6=-11.
Similarly, for the denominator those numbers are -2 and -5. (-2)(-5)=10 and -2-5=-7. Now we can factor both numerator and denominator:
\frac{ x^{2} -11x+30}{ x^{2} -7x+10} = \frac{(x-6)(x-5)}{(x-2)(x-5)}
Notice that we have (x-5) in both numerator and denominator, so we can cancel those out:
\frac{x-6}{x-2}
But remember than x= n^{2}, so lets replace that to get back to our original variable:
\frac{n^{2}-6 }{n^{2}-2 }
Last but not least, the denominator of rational expression can't be zero, so the only restriction in the variable is n^{2} -2 \neq 0
n^{2}  \neq 2
n \neq +or- \sqrt{2}
5 0
3 years ago
Read 2 more answers
Correct I’ll give brainlist no links or I’ll report
Gwar [14]

Alright, to start, slope-intercept form is y=mx+b, where m is the rate is it going up/down by, and b is the starting point.

With this, the question says that Coraz started with 0 naxvips then purchased 10 each month afterwards.

From this, we can fill in the equation, using m as the rate it is going up/down and b as the starting point:

<h3>The Equation: </h3>

y=10x+0

Next, it wants a table, so let's use the equation created to do this. X is the amount of months that have gone by, deciding how many naxvips Coraz has purchased.

So, to start, lets plug in 0 months into the equation into x:

y=10(0)+0

y=0+0

y=0

The answer resulted in 0 for month 0, understandably. Month 0 was when it said Coraz had 0 naxvips on his farms. With this, it would be (0,0) for this part.

For the next month, same thing, just plug it in:

y=10(1)+0

y=10+0

y=10

The answer resulted in 10 for month 1. Month 1 was when it said Coraz purchased his first batch of 10 naxvips. With this, it would be (1,10) for this part.

Again, with 2 months

y=10(2)+0

y=10+0

y=20

The answer resulted in 20 for month 2. Month 2 was when he got another 10 naxvips. With this, it would be (2,10) for this part. However, see the pattern? For every month, there will be 10 more naxvips added. With this, we can write out the table for it as well:

<h3>The Table:</h3>

(X, Y)

0, 0

1, 10

2, 20

3, 30

4, 40

etc..

5 0
3 years ago
F(x) = -2<br> Find f (3)
valkas [14]

Answer:

f= -2/3

Step-by-step explanation:

Let's solve your equation step-by-step.

f(3)=−2

Step 1: Simplify both sides of the equation.

3f=−2

Step 2: Divide both sides by 3.

3f

3

=

−2

3

f=

−2

3

Answer:

f=

−2

3

8 0
3 years ago
What is the perimeter of abc with vertices A(-2,9) B(7,-3) and C(-2,-3) in coordinate plane
SCORPION-xisa [38]
For the answer to the question above,
A - C = ( -2, 9) - (- 2 -3) 

<span>= ( 0, 12) </span>

<span>AC = 12 </span>

<span>B - C = (7 - 3) - ( - 2 -3) </span>

<span>= (9, 0) </span>

<span>BC = 9 </span>

<span>ABC is a right -angled triangle with AC as the hypotenuse </span>

<span>AC = sqrt( 9^2 + 12^2) </span>

<span>= sqrt(81 + 144) </span>

<span>= srqt(225) </span>

<span>= 15 </span>

<span>Perimeter = 12 + 9 + 15 </span>

<span>= 36 units </span>

<span> So the answer is 36 units
</span>I hope my answer helped you.
6 0
4 years ago
Read 2 more answers
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