3 years ago

Use a single digit times a power of 10 to estimate the number 0.00002149 please help :(

Mathematics

1 answer:

Rus_ich [418]3 years ago

8 0

Answer:

2.149 × 10-5

Step-by-step explanation:

You might be interested in

The side lengths of the following right triangle 15,20 and 25, as shown below. The altitude from the right angle splits the hypo

kompoz [17]

Answer:

$h = 12$

$x = 9$

$y= 16$

Step-by-step explanation:

Given

The attached triangle

Required

Find h, x and y

Let the base of the triangle be 15.

So, the area is:

$A = \frac{1}{2} * 15 * 20$

$i.e\ height = 20$

$A = \frac{1}{2} * 300$

$A = 150$

Let the base of the triangle be 25.

So, the area is:

$A = \frac{1}{2} * 25 * h$

$i.e\ height = h$

$A = \frac{1}{2} * 25h$

Substitute $A = 150$

$\frac{1}{2}*25h = 150$

Solve for h

$h = \frac{150 *2}{25}$

$h = 6 *2$

$h = 12$

Considering the smallest triangle

$Hypotenuse = 15$

So:

$15^2 = h^2 + x^2$

$15^2 = 12^2 + x^2$

This gives:

$15^2 - 12^2 = x^2$

$81 = x^2$

Take square roots

$9 =x$

$x = 9$

Solving for y

$x + y = 25$

$y= 25 - x$

$y= 25 - 9$

$y= 16$

7 0

2 years ago

Lena runs 2/3 mile each day she wants to know how many miles she has to run before she has has run a whole number

padilas [110]

3 days and she will have run 2 miles

4 0

3 years ago

Read 2 more answers

Jasmine’s cell phone company charges her $35 a month for phone service plus 0.50 for each text message. How many text messages d

nataly862011 [7]

A. 35+0.50(t)= $52
b. 34

3 0

2 years ago

Read 2 more answers

In one year, online retail sales increased from $6 to $11 billion.

xeze [42]

83 percent.

Simply do 11-6, which is 5; then do 5/6, and multiply by 100 to get the percent. That equals out to be 83.3333 percent. Or 83 percent when rounding.

3 0

3 years ago

Robin Hartman earns 681 per week plus 2% of sales over 6,500. Robins sales are 13,300. How much does robin earn?

barxatty [35]

Answer:

Robin earns 635 + 0.02*(12350-6500) dollars.

Step-by-step explanation:

Just know please mark branliest

3 0

2 years ago