All categories

3 years ago

Someone help me with this

Mathematics

1 answer:

DaniilM [7]3 years ago

3 0

Answer: 7.5

Step-by-step explanation:

You might be interested in

I need the surface area again plz

kolezko [41]

Answer:

Step-by-step explanation:

A=2(wl+hl+hw)

l -Length

w-Width

h-Height

A=2(wl+hl+hw)=2·(1·2+4.5·2+4.5·1)=31

8 0

2 years ago

Please respond to the question below in your own words with proper explanations

ycow [4]

Answer:

$t(400)=673$ .

It means that 673 of 9 inch tiles are required to cover an area of 400 square feet, when spacing the tiles a quarter inch apart.

Step-by-step explanation:

Given:

The function relating number of 9 inch tiles required and area to cover is:

$t(A)=\frac{144}{9.25^2}A$

Now, plug in 400 for $A$ to evaluate $t(400)$ .

$t(400)=\frac{144}{9.25^2}\times 400=\frac{144\times 400}{85.5625}=\frac{57600}{85.5625}=673.19\approx6225$

Therefore, Don required 673 of 9 inch tiles to cover an area of 400 square feet, when spacing the tiles a quarter inch apart.

4 0

3 years ago

Reducing fraction 80/100

IceJOKER [234]

Answer:

4/5 is fully reduced

Step-by-step explanation:

4 0

3 years ago

I do not even know where to begin. Please help.

xenn [34]

F(x) = 2x + 1 when x <= -5
Now -10 is less than -5 so we plug x = -10 into 2x +1:-

f(-10) = 2(-10) + 1 = -19 answer

Now f(x) = x^2 when -5< x < 5
x =2 is within this range so f(2) = 2^2 = 4 answer

You can calculate the other 3 values by a similar method

5 0

3 years ago

Solve by elimination. 1. 2x-3y=-9. 4x+9y=-13. 2. 2x-y=7 4x+5y=7. 3. 2x+4y=14 4x+y=14. 4. 4x-3y=16 5x+17y=20

JulijaS [17]

1.) x = -4, and y = 1/3

2.) x = 3, and y = -1

3.) x = 3, and y = 2

4.) x = 4, and y = 0

Hope this helps! - Alyssa

3 0

3 years ago