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3 years ago

Which is the best estimate for the product of 123.519 × 311,982.21?

1 answer:

4 0

B, these numbers are all the same, so in the end it's whichever Digit is the closes, but each gap is that changing by entire Tens of thousands.
The sum of those numbers has 8 digits, the only answer with 8 digits--

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I have the area of a circle but how do i find it’s radius

Vilka [71]

Answer:

The radius of the circle is half its diameter. It's the length from the center point straight out to the edge.

8 0

3 years ago

The radius of a circle measures 11 mm. What is the circumference of the circle? Use 3.14 for pie and do not round your answer.

adelina 88 [10]

C=2*pi*r
c=2*pi*11
c=22pi

5 0

3 years ago

Find the missing side. Round to the nearest tenth

vladimir1956 [14]

Answer:

Step-by-step explanation:

tan(35°) ≈ 0.7002

from triangle:

tan(35°) = 7/x

so:

7/x = 0,7002

7 = 0.7002•x

x = 7/0.7002 = 9,9971...

x ≈ 10.0

8 0

4 years ago

does anyone wanna talk I am bored? I dont have any homework questions, preferably because I did my homework. lol

MrRissso [65]

Answer:

sure why not

Step-by-step explanation:

8 0

3 years ago

..vertex: (4, -1)<br> f(3) = -6

s344n2d4d5 [400]

Answer:

$\huge\boxed{f(x)=-5(x-4)^2-1=-5x^2+40x-81}$

Step-by-step explanation:

The vertex form of an equation of a parabola:

$f(x)=a(x-h)^2+k$

$(h;\ k)$ - vertex

We have

vertex $(4;\ -1)\to h=4;\ k=-1$

$f(3)=-6$

Therefore we have:

$f(x)=a(x-4)^2+(-1)=a(x-4)^2-1$

Substitute $x=3$ and $f(3)=-6$

$a(3-4)^2-1=-6\qquad|\text{add 1 to both sides}\\\\a(-1)^2=-6+1\\\\a(1)=-5\\\\a=-5$

Finally:

$f(x)=-5(x-4)^2-1=-5(x^2-2(x)(4)+4^2)-1\\\\=-5(x^2-8x+16)-1=-5x^2+(-5)(-8x)+(-5)(16)-1\\\\=-5x^2+40x-80-1=-5x^2+40x-81$

4 0

3 years ago