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solong [7]
3 years ago
15

What is the order of 4 x 10^-7, 7 x 10^-9, 1 x 10^4, 2 x 10^4

Mathematics
2 answers:
butalik [34]3 years ago
8 0
4 x 10^-7 (7 x 10^-9) (1 x 10^4) (2 x 10^4)
Elza [17]3 years ago
5 0

Answer:

From least of greatest: 7\times 10^{-9},4\times 10^{-7},1\times 10^4,2\times 10^4

Step-by-step explanation:

We have been given 4 number in scientific notation. We are asked to write our given number in order.

To write our given numbers in order we need to write these number according to their degrees.

We know that a number with greatest positive degree is the largest number, while a number with largest negative degree will be smallest number.

Upon looking at our given numbers we can see that the number 7\times 10^{-9} has the largest negative degree, so it will be the smallest number.

We can see that number 4\times 10^{-7} has the second largest negative degree, so it will be the next number for our given numbers.

We can see that 1\times 10^4,2\times 10^4 has the same degree, but 2\times 10^4 has a leading coefficient of 2, so it will be the largest number.

Therefore, our given numbers from least to greatest order will be 7\times 10^{-9},4\times 10^{-7},1\times 10^4,2\times 10^4.

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What is the volume of the prism?
jok3333 [9.3K]

Answer:

78.75 cm³

Step-by-step explanation:

Volume = Width × Height × Length

V = 5 × 4.5 × 3.5

V = 78.75 cm³

8 0
3 years ago
Please help! I would really appreciate it!!
Luda [366]

Answer:

Dunno wat that means im in elementary lel =]

But I know wat its like to not have an answer on a hard question =(

5 0
3 years ago
A rectangle measures 15 1/4 feet by 8 11/15 feet. If the length and width are extended by 1 2/3 Feet each find the area of the n
zubka84 [21]

Answer:

New area is 175 42/45 feet ²

Step-by-step explanation:

Given data

Length l= 15 1/4

To proper fraction = 61/4 feet

Width w= 8 11/15

To proper fraction = 131/15 feet

Extention = 1 2/3

To proper fraction = 5/3

Dimensions of new rectangle

Length =61/4+5/3 = 183+20/12

LCM = 12 = 203/12

Width = 131/15+5/3= 131+25/15

LCM = 15 = 156/15

Area = 203/12*156/15= =31668/180

=31668/180

= 7917/45

= 175 42/45 feet ²

6 0
3 years ago
If y varies directly as (x+3) and inversely as (x-3) and y=21 when x=4, what is the equation for y in terms of x?
igor_vitrenko [27]
\bf \qquad \qquad \textit{double proportional variation}
\\\\
\begin{array}{llll}
\textit{\underline{y} varies directly with \underline{x}}\\
\textit{and inversely with \underline{z}}
\end{array}\implies y=\cfrac{kx}{z}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------\\\\

\bf \textit{\underline{y} varies directly as (x+3) and inversely as (x-3)}\implies y=\cfrac{k(x+3)}{x-3}
\\\\\\
\textit{we also know that }
\begin{cases}
y=21\\
x=4
\end{cases}\implies 21=\cfrac{k(4+3)}{4-3}\implies 21=\cfrac{k(7)}{1}
\\\\\\
\cfrac{21}{7}=k\implies 3=k\qquad thus\qquad \qquad \boxed{y=\cfrac{3(x+3)}{x-3}}
6 0
3 years ago
5 squirrels were found to have an average weight of 8.9 ounces with a sample standard deviation is 0.9. Find the 95% confidence
stira [4]

Answer: ( 8.11 , 9.69)

the 95% confidence interval of the true mean weight

= ( 8.11 , 9.69)

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = 8.9

Standard deviation r = 0.9

Number of samples n = 5

Confidence interval = 95%

z(at 95% confidence) = 1.96

Substituting the values we have;

8.9+/-1.96(0.9/√5)

8.9+/-1.96(0.4025)

8.9+/- 0.79

= ( 8.11 , 9.69)

Therefore at 95% confidence interval (a,b) = ( 8.11 , 9.69)

7 0
3 years ago
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