What is 3.82e+7 in standerd form

PLZ HELP WILL GIVE BRAINLIEAST FOR BEST ANSWER

stich3 [128]

I think it’s the third one

4 0

3 years ago

I WILL MARK BRAINIEST please answer question 5

Marat540 [252]

Answer:

a = 150

Step-by-step explanation:

The sum of the internal angles of an octagon is 1080°.

$4a+4(120)=1080$ (There are four $120^{\circ}$ and 4 $a^{\circ}$ , they sum to 1080°)

$4a + 480 = 1080$

$4a = 600$

$a = 150$

Hope this helps :)

4 0

3 years ago

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In a closed box there are 7 blue balls and 5 red balls. Randomly pick one from the box one at a time until the ball is green, th

timofeeve [1]

Answer:

1/7 is the probabiltiy

Step-by-step explanation:

6 0

3 years ago

40 PTS if u do this correctly! Algebra 1 Do #'s 4,5,6,7,8,9,10,12,13,14

Likurg_2 [28]

4.)
n^2+4n=32
--------------------------
Subtract 32 from each side
n^2+4n-32=32-32
n^2+4n-32=0
--------------------------
Factor left side of equation
(n-4)(n+8)=0
--------------------------
Now set the factors to equal 0
n-4=0
or/and
n+8=0
--------------------------
n=4 and/or n=-8
====================================================================
5.)
t^2-26t=56
Subtract 56 from each side
t^2-26t-56=56-56
t^2-26t-56=0
----------------------------
Factor left side
(t+2)(t-28)=0
--------------------------
Set factors equal to 0
t+2=0
or/and
t-28=0
t = -2 and/or t = 28
===================================================================
As you may have noticed you need to subtract to get 0 on the right side, then you factor the left side and then switch the symbols from the numbers. Negative to Positive and Positive to Negative. I'll keep provided the work for the next 3 or 4 questions
===================================================================
6.)
z^2-14z=72
----------------
Subtract 72 from each side
z^2-14z-72=72-72
z^2-14z-72=0
----------------
Factor left side
(z+4)(z-18)=0
----------------
Set factors equal to 0
z+4=0 or z-18=0
Invert
z = -4 and z = 18
===================================================================
7.)
80+a^2=18a
-------------------------
Simplify
a^2+80=18a
------------------------
Subtract 18a from each side
a^2+80-18a=18a-18a
a^2-18a+80=0
------------------------
Factor left side
(a-8)(a-10)=0
-----------------------
Set factors to equal 0
a-8=0 or a-10=0
Invert
a = 8 and a = 10
===================================================================
8.)
u^2=16u+36
--------------------------
Subtract 16u+36 from both sides.
u^2-(16u+36)=16u+36-(16u+36)
u^2-16u-36=0
--------------------------
Factor left side
(u+2)(u-18)=0
--------------------------
Set factors to 0
u+2=0 or u-18=0
Invert
u = -2 and u = 18
====================================================================
9.)
3h^2+6h=105
--------------------------
Subtract 105 from each side
3h^2+6h-105=105-105
3h^2+6h-105=0
--------------------------
Factor left side
3(h-5)(h+7)=0
--------------------------
Set factors to equal 0
h-5=0 or h+7=0
h = 5 and h = -7
===================================================================
10.)
a^2+14a=-45
---------------------------
Subtract -45 from each side
a^2+14a-(-45)=-45-(-45)
a^2+14a+45=0
--------------------------
Factor left side
(a+5)(a+9)=0
-------------------------
Set factors to equal 0
a+5=0 or a+9=0
Invert
a = -5 and a = -9
===================================================================
12.)
w=5 and w=6
===================================================================
13.)
k=6 and k=-9
===================================================================
14.)
h=5 and h=12

7 0

4 years ago

If you can help me in this I would be very Thankful guys

sladkih [1.3K]

Answer:

OAB = 75

OAB = 45

OMN = 60

Step-by-step explanation:

so there is a rule for corresponding angles are equal to one another

in this question the corresponding angles would be angle OMN and angle OAB

meaning that since OMN is 45 degrees, then OAB would also be 45 degrees

FOR ANGLE ONM

To find angle ONM, we know that the angle of a straight line is equal to 180 degrees.

If part of the straight line is 120 degrees, then the remaining would mean

180-120 = 60 degrees

thus ONM is 60 degrees

Earlier, we found that corresponding angles are equal and ONM and OBA are corresponding angles which means

OBA also equals 60 degrees.

To find angle OMN, the angles in a triangle add up to 180, since we know angles M and angle N, then

180 - 45 - 60 = 75 degrees

8 0

3 years ago

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