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3 years ago

What is the correct representation of the number 0.00000000023 in scientific notation

Mathematics

1 answer:

AVprozaik [17]3 years ago

8 0

Answer:

2.3*10^-10

Step-by-step explanation:

2.3 because that number can never be higher than 10

-10 because there are 10 spots from where the decimal is to where it needs to be for it to be 2.3

-10 because the number is small

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Vedmedyk [2.9K]

Answer:

Step-by-step explanation:

what math is this?

5 0

3 years ago

It costs Sally 20 cents to make a cup of lemonade, and she sells each cup for 50 cents. She is using the following identity to c

mote1985 [20]

She would make 3.00 dollars

50(10) - 20(10) = (10)(50 - 20)

500 - 200 = (10 * 30)

300 = 300

(10)(50 - 20) = 30(10)

(10 * 30) = 300

300 = 300

3 0

3 years ago

A student made an error when solving this problem. A number divided by 4 is 3 more than –11. What is the number?

fiasKO [112]

C is the right anskwe

4 0

3 years ago

Which matrix equation represents the system of equations?<br><br> {-x+ 2y = 0 <br> y= -2

Snowcat [4.5K]

We are given a system of equations,

$\begin{cases}-x+2y=0\\y=-2\\ \end{cases}$

This will translate into a 2x2 matrix of coefficients (because 2 equations and 2 unknowns),

$\begin{bmatrix}-1&2\\0&1\\ \end{bmatrix}$

The matrix will then be applied to the vector (lower dimensions on top),

$\begin{bmatrix}x\\y\\ \end{bmatrix}$

And the result vector will be whats on the other side of equals sign,

$\begin{bmatrix}0\\-2\\ \end{bmatrix}$

So to put everything together,

$\begin{bmatrix}-1&2\\0&1\\ \end{bmatrix}\begin{bmatrix}x\\y\\ \end{bmatrix}=\begin{bmatrix}0\\-2\\ \end{bmatrix}$

Hope this helps :)

6 0

3 years ago

Solve for x. 4+3/5(15+2x)=25

erik [133]

If you would like to solve 4 + 3/5 * (15 + 2x) = 25 for x, you can do this using the following steps:

4 + 3/5 * (15 + 2x) = 25
3/5 * (15 + 2x) = 25 - 4
9 + 6/5 * x = 21
6/5 * x = 21 - 9
6/5 * x = 12 /*5/6
x = 12 * 5/6
x = 10

The correct result would be x = 10.

6 0

3 years ago