All categories

3 years ago

Mount Everest is 8,850m tall. Convert the height to kilometers.

Mathematics

1 answer:

BaLLatris [955]3 years ago

6 0

Answer: 8.85km

Step-by-step explanation:

8,850m = 8,850 m⋅1 km / 1,000 m

You might be interested in

Can someone help please

Trava [24]

9514 1404 393

Answer:

16.4

Step-by-step explanation:

The law of cosines is useful here. It tells you ...

b^2 = a^2 + c^2 -2ac·cos(B)

b^2 = 22^2 +10^2 -2·22·10·cos(44°)

b^2 ≈ 267.49

b ≈ √267.49 ≈ 16.35514

b ≈ 16.4

4 0

3 years ago

Simplify the expression a+2c-5b-c+a-b

romanna [79]

A + 2c - 5b - c + a - b
We're gonna have to combine like terms.

(a+a)+(-5b-b)+(2c-c)

2a-6b+c This is your answer

6 0

3 years ago

I need to know how to work it out someone plz help me out due tommorow

DiKsa [7]

Multiply 75 by 1.0675 to find the total amount of tax plus 100 percent of the original fee im pretty sure and for the seocnd one multiply 450 by 1.45

5 0

3 years ago

Use any order, any grouping to write an equivalent expression: 3(2x) + 4y(5) + (4 x 2 x z)

enyata [817]

Answer:

We conclude that the equivalent expression is:

$3\left(2x\right)+4y\left(5\right)+\left(4\times \:2z\right)=6x+20y+8z$

Step-by-step explanation:

Given the expression

$3\left(2x\right)+4y\left(5\right)+\left(4\times \:2z\right)$

Remove parentheses: (a) = a

$=3\times \:2x+4\times \:5y+4\times \:2z$

Multiply the numbers: 3 × 2 = 6

$=6x+4\times \:5y+4\times \:2z$

Multiply the numbers: 4 × 5 = 20

$=6x+20y+4\times \:2z$

Multiply the numbers: 4 × 2 = 8

$=6x+20y+8z$

Thus, we conclude that the equivalent expression is:

$3\left(2x\right)+4y\left(5\right)+\left(4\times \:2z\right)=6x+20y+8z$

8 0

3 years ago

Elena is paid a constant rate for each hour she works. The table shows the amounts of money that Elena earned for various amount

Nikolay [14]

Constant rates are used to illustrate linear functions.

The average rate of change is $9.0 per hour
The function that models the table is: $\mathbf{f(x) = 9x }$
The amount earned in 7.5 hours is $67.5

(a) The average rate of change

This is calculated using:

$\mathbf{Rate = \frac{y_2 -y_1}{x_2 -x_1}}$

So, we have:

$\mathbf{Rate = \frac{31.5-22.50}{3.5 - 2.5}}$

$\mathbf{Rate = \frac{9}{1.0}}$

$\mathbf{Rate = 9.0}$

Hence, the average rate of change is $9.0 per hour

(b) A function that models the table of values

Let x represent hours, and y represent the earnings.

So, we have:

$\mathbf{y =m (x - x_1) + y_1}$

Where:

m =Rate = 9.0

So, we have:

$\mathbf{y = 9(x - 2.5) + 22.5}$

Expand

$\mathbf{y = 9x - 22.5 + 22.5}$

$\mathbf{y = 9x }$

Represent as a function

$\mathbf{f(x) = 9x }$

Hence, the function that models the table is: $\mathbf{f(x) = 9x }$

(c) Amount earned for 7.5 hours

This means that x = 7.5

So, we have:

$\mathbf{f(7.5) = 9 \times 7.5 }$

$\mathbf{f(7.5) = 67.5}$

Hence, the amount earned in 7.5 hours is $67.5