Ask question

Ask question

All categories

2 years ago

8

A student measured the volume of an iron nail to be 0.880 cm3. She found its mass was 6.92grams. What is the density of iron?

1 answer:

Natali [406]2 years ago

8 0

Answs,dv

Step-by-step explanation:

You might be interested in

What is the cube root of ______?

DedPeter [7]

Answer:

3a^4

Step-by-step explanation:

The cube root of an expression breaks the expression into a term which multiplies by itself twice to make the expression. For example, the ∛8 = 2 since 2*2*2 = 8. A cube root looks for factors which form a group of 3 to make the expression. Using this definition and example, find the cube root of 27a^12.

27 breaks into 3*3*3. So the cube root of 27 is 3.

a^12 breaks into (a^4)(a^4)(a^4). So the cube root is a^4.

Together the cube root of 27a^12 is 3a^4.

5 0

3 years ago

Multiply the following 11 x square Y and 2 x square y square

Alex17521 [72]

Answer:

22 x to the 4th power and y to the 3rd power

Step-by-step explanation:

4 0

2 years ago

Point B is collinear with A and C and partitions AC in a 3:4 ratio. B is located at (4,1) and C is located at (12,5). Find the c

GrogVix [38]

Answer:

$A(-\frac{20}{3} ,-\frac{13}{3})$

Step-by-step explanation:

Point B partitions AC in a 3:4 ratio.

B is located at (4,1) and C is located at (12,5).

Let $(x_1,y_1)$ be the coordinates of A.

Then $(\frac{mx_1+nx_2}{m+n}, \frac{my_1+ny_2}{m+n})=(4,1)$

But m:n=3:4 implies m=3 and n=4 and $(x_2=12,y_2=5)$

$(\frac{3x_1+4*12}{3+4}, \frac{3y_1+4*5}{3+4})=(4,1)$

$(\frac{3x_1+48}{7}, \frac{3y_1+20}{7})=(4,1)$

$\frac{3x_1+48}{7}=4, \frac{3y_1+20}{7}=1$

$3x_1+48=28, 3y_1+20=7$

$3x_1=-20, 3y_1=-13$

$x_1=-\frac{20}{3} , y_1=-\frac{13}{3}$

8 0

3 years ago

What is the inverse of 4 square

Scrat [10]

$a^{-1}=\dfrac{1}{a}-\text{the inverse of a}\\\\\text{the inverse of}\ 4^2:\\\\\left(4^2\right)^{-1}=4^{-2}=\dfrac{1}{4^2}=\dfrac{1}{16}$

5 0

3 years ago

If the perimeter of a square is 20, find the length of a diagonal

avanturin [10]

Answer:

7.07

Step-by-step explanation:

<h2><u>Length</u></h2>

a square has equal length on each side

hence is the perimeter is 20 it means that :

each side is 20/4 = 5

we can make a diagonal line which create 3 right angled triangles

2 sides of the triangle are 5 , this is the base and the height

to find the length we can make use of the Pythagoras theorem

c^2 = a^2 + b^2

c is the hypotenuse ( the diagonal;)

a and b are the opposite and adjacent

hence :

c^2 = 5 ^2 + 5^2

c^2 = 50

c = $\sqrt{50}$

c = 7.071

to 3sf

<h3><u>diagonal length = 7.07</u></h3>

6 0

3 years ago