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4 years ago

How many levels of body protection is there

2 answers:

hjlf4 years ago

6 0

3 as in 3 layers of skin is that what you were talking about hope this helps plus the 1 layers is epidermous 2 is dermis and 3rd is tissue

Svetllana [295]4 years ago

4 0

I want to say there are 3 main levels for your body's protection, I'm so sorry if this is wrong but if I remember it right there are 3, I hope this helps you.

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dev knows he only has 8gallons of gasoline in the tank. he wants to go on a 300- mile trip. will he have to buy more gasoline? a

max2010maxim [7]

Yes you will need more gassoline

6 0

3 years ago

Read 2 more answers

Calculate the exact value of cos(a−b) given that sin a=12/13 with π/2

Lady bird [3.3K]

Answer:

Step-by-step explanation:

$sin ~a=\frac{12}{13} ,\frac{\pi}{2}$

8 0

3 years ago

What is the value of y? 6(5 + 3) = 6 • 5 + 6 • y y =

algol13

Divide the equation by six to get:

5+3=5+y

Subtract 5 from both sides to find that y=3.

6 0

3 years ago

Read 2 more answers

Solve the quadratic equation 4x2 − 121 = 0. Verify your answer using a difference-of-squares factoring method.

Alenkasestr [34]

Answer:

Option d) is correct

That is x equals plus or minus start fraction 11 over two end fraction

Step-by-step explanation:

Given quadratic equation is $4x^2-121=0$

To write the given quadratic equation by using a difference-of-squares factoring method:

$4x^2-121=0$

The above equation can be written as

$4x^2-11^2=0$

$(2x)^2-11^2=0$

The above equation is in the form of difference-of-squares

Therefore the given quadratic equation can be written in the form of difference-of-squares

by factoring method is $(2x)^2-11^2=0$

$(2x+11)(2x-11)=0$ (which is in the form $a^2-b^2=(a+b)(a-b)$ )

2x+11=0 or 2x-11=0

$x=\frac{-11}{2}$ or $2x=11$

$x=\frac{-11}{2}$ or $x=\frac{11}{2}$

$x=\pm \frac{11}{2}$

Therefore option d) is correct

That is x equals plus or minus start fraction 11 over two end fraction

5 0

3 years ago

What is x(x+2) can someone show me how to do it please

yulyashka [42]

Answer:

x^2+2x

Step-by-step explanation: You would take x and multiply it by x and get X^2 then you would take x anm multiply it by 2 to get 2x. It is distributing

6 0

3 years ago