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3 years ago

What is scientific notation and why is it important

2 answers:

7 0

Scientific notation is shorthand for writing really big or really small numbers. Without it we could not do certain calculations because there would be just too many digits and it would be tedious.

For example:
writing out the numbers in standard form..
1,440,000,000 ÷ 0.0000012 = ???
= 1,200,000,000,000,000

Scientific notation...
144×10^7 ÷ 12×10^-7 = 12×10^14

Komok [63]3 years ago

5 0

Scientific notation, is a way of writing numbers that accommodates values that's too large or too small to be conveniently written or comprehended in standard decimal notation. ... Scientific notation is important to modern society because it provides to people working with these numbers.

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7 − 58z = −23 ASPA A. 9.38 B. 48 C. −24 D. 24

Hitman42 [59]

Answer:

the given are not correct the real answer is 15/29 or 0.517...

Step-by-step explanation:

7-58z = -23

-58z = -23 -7

-58z =-30 the negatives will cancel each other out

-58. -58

z = 30/58 divide both by 2

z= 15/29 which can also be equal to 0.517...

5 0

3 years ago

The ratio of the height of two similar pyramids is 4:7. The volume of the smaller pyramid is 1,331cm, to the nearest whole numbe

IRISSAK [1]

Answer:

The volume of the larger pyramid is equal to $7,133\ cm^{3}$

Step-by-step explanation:

step 1

Find the scale factor

we know that

If two figures are similar, then the ratio of its corresponding sides is equal to the scale factor

Let

z----> the scale factor

In this problem, the ratio of the height is equal to the scale factor

$z=\frac{4}{7}$

step 2

Find the volume of the larger pyramid

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z----> the scale factor

x----> volume of the smaller pyramid

y----> volume of the larger pyramid

$z^{3}=\frac{x}{y}$

we have

$z=\frac{4}{7}$

$x=1,331\ cm^{3}$

substitute

$(\frac{4}{7})^{3}=\frac{1,331}{y}\\ \\(\frac{64}{343})=\frac{1,331}{y}\\ \\y=343*1,331/64\\ \\y=7,133\ cm^{3}$

8 0

3 years ago

5x^2-23x+12 this is the question im stuck on

AURORKA [14]

Rewrite it as 5x^2 -20x-3x+12
then (5x^2 -20x)(-3x+12)
then use gcf and u will get the answer in a binomial form

8 0

3 years ago

Which of these points will lie on quadrant II of a coordinate plane?

saveliy_v [14]

Answer:

B. D (-4, 3)

Step-by-step explanation:

In quadrant II x value is -ve and y value is positive.

7 0

3 years ago

Find the slope of the line that passes through these two points: (-12, -1) and (-3,-4)

ziro4ka [17]

-1/3 is the slope of the line

7 0

3 years ago