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3 years ago

A sample has a mass of 15g and a volume of 3ml calculate the density

Mathematics

1 answer:

ValentinkaMS [17]3 years ago

4 0

Since density is mass/volume, the density is 5 g/ml. Hope this helps!

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Solve for x -3(-3x-1) +2x+2=27

Zielflug [23.3K]

Answer:

$x=2$

Step-by-step explanation:

So we have the equation:

$-3(-3x-1)+2x+2=27$

First, distribute the -3:

$9x+3+2x+2=27$

Combine like terms:

$11x+5=27$

Subtract 5 from both sides:

$11x=22$

Divide both sides by 11:

$x=2$

So, the value of x is 2.

And we're done!

6 0

4 years ago

Read 2 more answers

Help with finding proofs

nadya68 [22]

Answer:

Statement: ∠XYZ = ∠ABC Reasons: Below

Step-by-step explanation:

For two angles to be complementary means that the sum of the two angles is equivalent to 90°. When an angle has one of those little squares, that means the angle is a right angle, or a 90° angle. Also, since it's given that line segment AB and line segment BC are perpendicular, this means the two lines/line segments cross each other at a right angle, which also proves that line segment AB and BC have a 90° angle.

7 0

1 year ago

Select the equation that is perpendicular to: y = -4x + 5

andreev551 [17]

A a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a. A a a a a a

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3 years ago

Write the slope-intercept form of the equation of the

Degger [83]

Answer:

y = -4/5x + 1

Step-by-step explanation:

The slope-intercept form:

y = mx + b, where m- slope, b- y-intercept

Use point (5, -3) and m = -4/5:

-3 = -4/5*5 + b
-3 = -4 + b
b = -3 + 4
b = 1

The line is:

y = -4/5x + 1

8 0

3 years ago

Read 2 more answers

Vita wants to center a towel bar on her door that is 27 1/2 inches wide. She determines that the distance from each end of the t

timurjin [86]

Answer:

The equation is $x+18 =\frac{55}{2}$ ..

The length of the towel bar is $\frac{19}{2}\ in \ \ \ OR \ \ \ 9\frac{1}{2}\ in$ ..

Step-by-step explanation:

Given,

Length of the door = $27\frac{1}{2}\ in$

we can rewrite $27\frac{1}{2}\ in$ as $\frac{55}{2}\ in$ .

We have to find out the length of the towel bar.

Let the length of towel bar be 'x'

`Since Vita wants that the distance from each end of the towel bar to the end of the door to be 9 inches.

So we can say that the length of the towel bar plus from each end of the towel bar to the end of the door plus from each end of the towel bar to the end of the door is equal to length of door.

framing in equation form, we get;

$x+9+9= \frac{55}{2}\\\\x+18 =\frac{55}{2}$

Hence The equation is $x+18 =\frac{55}{2}$ .

Now we solve the equation we get;

Subtracting both side by 18 we get;

$x+18-18=\frac{55}{2}-18\\\\x=\frac{55}{2}-18$

Now we will make the denominator common we get;

$x=\frac{55}{2} -\frac{18\times2}2= \frac{55}{2} -\frac{36}2 = \frac{55-36}{2}=\frac{19}{2}\ in \ \ \ OR \ \ \ 9\frac{1}{2}\ in$

Hence The length of the towel bar is $\frac{19}{2}\ in \ \ \ OR \ \ \ 9\frac{1}{2}\ in$ .

6 0

4 years ago