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Rufina [12.5K]
3 years ago
11

What is (3.1x10^5)(2.2x10^7) in scientific notation?

Mathematics
2 answers:
aivan3 [116]3 years ago
8 0

The scientific notation:

a\cdot 10^k where 1\leq a < 10 and k\in\mathbb{Z}

(3.1\cdot10^5)(2.2\cdot10^7)=(3.1)(2.2)(10^5\cdot10^7)\\\\=6.82\cdot10^{5+7}=6.82\cdot10^{12}

nataly862011 [7]3 years ago
3 0

Answer:

It's B.) 6.82 x 10^12

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What is the y-/intercept of 5x+3y=15
liberstina [14]

Answer:

5

Step-by-step explanation:

y intercept: when x = 0

5(0) + 3y = 15

3y = 15, y = 5

The y intercept is 5

4 0
3 years ago
During the cold winter months, a sheet of ice covers a lake near the arctic circle. At the beginning of spring, the ice starts t
Digiron [165]

Answer: 1.5 meters.


Step-by-step explanation:

Given: At the beginning of spring, the ice starts to melt.

The variable s models the ice sheets thickness in meters t weeks after the beginning of spring.

s=-0.25t+4

At t=0, s=4 meters

At t=1, s=3.75 meters

∴It is a linear equation, where the rate of change in thickness = 3.75-4=0.25 meter per minute .

The decrease in ice sheet in every  6 weeks = 6\times\text{rate of decrease}=6\times0.25=1.5\ meters

5 0
3 years ago
Determine the intercepts of the line.
spayn [35]
ANSWER:
y intercept = (0,-6/5)
x intercept = (-3,0)


EXPLANATION:
To find the y intercept you have to substitute the x with zero because the y intercept always lies on the y axis which means that they will always have the coordinates (0,y)
The same goes for the x intercept. To find the x intercept you have to substitute the y with zero because the x intercept always lies on the x axis which means that they will always have the coordinates (x,0)


WORKING OUT:
Given=2x+5x= -6

The y intercept)
x=0
2(0)+5y= -6
5y= -6
y = -6/5 (divide each side of the equation by t to get the y alone)
y intercept = (0,-6/5)

The x intercept)
y=0
2x+5(0)= -6
2x= -6
x = -3 (divide each side of the equation by t to get the x alone)
x intercept = (-3,0)
6 0
3 years ago
Point P’(5,-4) is the image of point(2,3) under a translation what is the image of 6,-2 under the same translation
Gre4nikov [31]

Answer:

C

Step-by-step explanation:

(2,3) to (5,-4) its (3,-7) so you jus add (3,-7) to (6,-2) and it gives you (9,-9)

I dont know if it makes sense but yea

5 0
3 years ago
Complete the square for 3x^2 – 12x = 9
Brums [2.3K]
Hope this helps final answer it the one with check mark . That’s what I know on how to do this

4 0
4 years ago
Read 2 more answers
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