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4 years ago

5

How to write each number in standard scientific form?

1 answer:

s2008m [1.1K]4 years ago

7 0

You have to move the decimal place for how many space the exponent say

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In a circle with a diameter of 25.2 ft. An arc is intercepted by a central angle of 168°. What is the arch length? Use 3.14 for

ss7ja [257]

if the circle has a diameter of 25.2, its radius is half that or 12.6.

$\bf \textit{arc's length}\\\\ s=\cfrac{\pi \theta r}{180}~~ \begin{cases} r=radius\\ \theta =angle~in\\ \qquad degrees\\ \cline{1-1} r=12.6\\ \theta =168 \end{cases}\implies s=\cfrac{\pi (168)(12.6)}{180} \\\\\\ s=11.76\pi \implies \implies \stackrel{\pi =3.14~\hfill }{s=36.9264}\implies \stackrel{\textit{rounded up}}{s=36.93}$

4 0

3 years ago

The length of a rectangle is 4 more than half the width. Which equation could represent the area of the rectangle in terms of th

frosja888 [35]

Answer:

let length be x and breadth be y

by question

L=4×1/2×B

L = 2B

now

Area of rectangle=L×B

2B ×B

2B^2

Is it correct? ,I actually tried to solve it

3 0

3 years ago

F(x)=-x^2+1 find f(-3)

Serjik [45]

Answer:

-8

Step-by-step explanation:

All you have to do to solve this equation is plug "-3" into the equation where you see "x"

$f(x)=-x^2+1\\f(-3)=-(-3)^2+1\\f(-3)=-(9)+1\\f(-3)=-9+1\\f(-3)=-8$

4 0

3 years ago

What is the LCD of 3/4 and 5/6

Elena-2011 [213]

Answer:

19/12 or 1/7/12

Step-by-step explanation:

find what is common in both denominators. in this case 12 can be divisible.
3x3/4x3 + 5x2/6x2
9/12+10/12=19/12=1/7/12

5 0

3 years ago

Read 2 more answers

(x*2y*4z)*5 (xy)*2<br> Simplify expression

irinina [24]

Step-by-step explanation:

x(2)y(4)z(5)xy(2)

$=80 {x}^{2} {y}^{2} z$

4 0

3 years ago

Read 2 more answers