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2 years ago

13

Will 2 objects that are the same size always have the same mass? Use an example to explain

2 answers:

Karolina [17]2 years ago

7 0

No a sphere consisting of steel at some dimensions such as 3 ft^3 wouldn't weigh the same as a sphere of silicone at 3 ft^3

lakkis [162]2 years ago

7 0

The objects will not always have the same mass because they might not be made of the same substance. Some substances are heavier or denser than others. For example; A plate made of clay will be lighter than one made out of gold or diamond. Also, if you fill a beaker with water and another with sand at the same level, you will notice that the beaker with sand will be heavier and weigh a lot more than the beaker with water. This is because sand is denser than water. Hope i helped. GOODLUCK.

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Straight line A has the equation y = 3x + 2. Find the equation of the line parallel to A and goes

arlik [135]

Answer:

y = 3x - 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 3x + 2 ← is in slope- intercept form

with slope m = 3

Parallel lines have equal slopes , then

y = 3x + c ← is the partial equation

To find c substitute (3, 8 ) into the partial equation

8 = 9 + c ⇒ c = 8 - 9 = - 1

y = 3x - 1 ← equation of parallel line

6 0

3 years ago

Find x, if 3x − 5(y + x ) ^2 = 16 and 4x + 2(y + x )^ 2 = 30

lana66690 [7]

Answer:

x = 7

Step-by-step explanation:

Start by solving for $(y+x)^2$ which is a common expression for both equations. Then in the first equation:

$3\,x5\,(y+x)^2=16\\3x-16=5\,(y+x)^2\\(y+x)^2=\frac{3\,x-16}{5}$

and in the second equation:

$4\,x+2\,(y+x)^2=30\\2\,(y+x)^2=30-4\,x\\(y+x)^2=15-2\,x$

Now we make the two $(y+x)^2$ expressions equal so we get:

$\frac{3\,x-16}{5} =15-2\,x\\3\,x-16=75-10\,x\\13\,x=75+16\\13\,x=91\\x=7$

8 0

3 years ago

This one is algebra.....

vodomira [7]

${Hello~!\:}$

<h2>Your answer will be is :</h2><h2></h2><h3>B. And C.</h3><h3></h3>

Hope It Helps. . .

#LearnWithBrainly

$\underline{A~n~s~w~e~r~:\;}$

$\bold{Jace\;}$ ^-^

7 0

2 years ago

Please help me as soon as possible

elixir [45]

You might want to see what other people say but I think that it is 40

5 0

3 years ago

Read 2 more answers

Solve the inequality. 2(4+2x)≥5x+5<br> x≤−2 <br> x≥−2 <br> x≤3<br> x≥3

KATRIN_1 [288]

<h2>Answer:</h2>

The solution of the inequality is:

$x\leq 3$

<h2>Step-by-step explanation:</h2>

We are given a inequality in terms of variable x as:

$2(4+2x)\geq 5x+5$

Now we are asked to find the solution of the inequality i.e. we are asked to find the possible values of x such that the inequality holds true.

We may simplify this inequality as follows:

On using the distributive property of multiplication in the left hand side of the inequality we have:

$2\times 4+2\times 2x\geq 5x+5\\\\i.e.\\\\8+4x\geq 5x+5\\\\i.e.\\\\8-5\geq 5x-4x\\\\i.e.\\\\x\leq 3$

The solution is: $x\leq 3$

8 0

3 years ago

Read 2 more answers