Ask question

Ask question

All categories

3 years ago

11

Help asap.

1 answer:

e-lub [12.9K]3 years ago

7 0

1. Gold has a higher density than silver. This is shown by the equation D = M/V, where D is density, M is mass, and V is volume. This means that when the jeweler put an equal amount of mass in, he had to put a greater volume of silver to equal the same mass of gold. The total volume of the crown increased.

2. Archimedes discovered that the amount of volume he put in (whether his body, or the crown) would be equal to the rise in volume of the water level (that is, the new water level versus the old one before anything had been put in). Archimedes would have then gotten a block of gold that weighed the same as the crown and checked the volume rise. Then once he tested the crown, he would have seen that the volume rise was higher than expected, and he would know that the jeweler had included some silver.

You might be interested in

1-Suppose the path of a baseball follows the path graphed by the quadratic function ƒ(d) = –0.6d2 + 5.4d + 0.8 where d is the ho

jasenka [17]

Answer:

1. The correct option B.

2.The correct option A.

Step-by-step explanation:

The given function is

$f(d)=-0.6d^2+5.4d+0.8$

Where f(d) is the height of the ball at horizontal distance d.

Put f(d)=0, to find the distance where the ball touch the ground.

$0=-0.6d^2+5.4d+0.8$

Quadratic formula:

$d=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

Using the quadratic formula we get

$d=\frac{-5.4\pm \sqrt{(5.4)^2-4(-0.6)(0.8)}}{2(-0.6)}$

$d=-0.146,9.146$

Therefore the ball is in air between d=-0.146 to d=9.146.

The distance can not be negative, therefore the ball remains in the air between d=0 to d=9.146.

$9.146\approx 9.15$

Therefore the correct option is B.

2.

The given equation is

$y=(x-1)^2+1$ .... (1)

The standard form of parabola is

$y=a(x-h)^2+h$ .... (2)

Where, a is constant and (h,k) is vertex.

On comparing (1) and (2), we get

$a=1$

$h=1$

$k=1$

Since the value of a is positive, therefore it is an upward parabola. The vertex of the parabola is (1,1).

Put x=0 in the given equation.

$y=(0-1)^2+1$

$y=1+1=2$

Therefore the y-intercept is (0,2) and option A is correct.

8 0

3 years ago

Whats the relation ship between these two

Delvig [45]

I think it’s c.
:) bddffzz

7 0

3 years ago

Read 2 more answers

Evaluate the expression.<br><br> StartFraction 9 factorial Over 3 factorial EndFraction

Verizon [17]

Answer:

The answer you should get is 9:3

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

How can you use a graph of a linear relationship to find the unknown value of y or x within the region of the graph

adoni [48]

U plot ur answers on the graph and u will fid it

8 0

3 years ago

In one middle school, there are 8 girls for every 7 boys. The total number of students is 330. How do you find the total number

juin [17]

Answer:

176 girls

Step-by-step explanation:=

8 girls + 7 boys = 15 students

So, there are 8 girls for every 15 students.

$\text{No. of girls} = \text{330 students} \times \dfrac{\text{8 girls}}{\text{15 students}} = \textbf{176 girls}$

3 0

3 years ago