All categories

4 years ago

I need some help with this. If you could help me, that would be great.

Mathematics

1 answer:

Vesnalui [34]4 years ago

8 0

Answer:

.31 g / mL

Step-by-step explanation:

Density = mass / volume

Sample 3

mass = 7 1/4 = 7.25

Volume 23.1

Density = 7.25/ 23.1 = .313852814

To the nearest hundredth

.31 g / mL

You might be interested in

Aye add me on xbox<br> ChoccyMilk20 and we can play whatever

Neporo4naja [7]

Answer:

I like your name :)

Step-by-step explanation:

3 0

3 years ago

MARKING BRAINLIST!!! In a couplet one statement is _____ and one is ______

makvit [3.9K]

Deciding and Acting.

A couplet can have an open sentence which is the deciding and the closing sentence being the acting.

7 0

3 years ago

In triangle JKL, tan(b°) = 3/4 and cos(b°) =4/5. If triangle JKL is dilated by a scale factor of 1/2, what is sin(b°)?

zysi [14]

Answer:

$\sin (b^\circ)=\dfrac{3}{5}$ .

Step-by-step explanation:

It is given that,

$\tan (b^\circ)=\dfrac{3}{4}$

$\cos (b^\circ)=\dfrac{4}{5}$

If a figure is dilated, then the image is similar to the figure. It means the corresponding angles of figure and image are congruent.

So, the value of sin(b°) after dilation is equal to the value of sin(b°) before dilation.

We know that,

$\dfrac{\sin \theta}{\cos \theta}=\tan \theta$

$\dfrac{\sin (b^\circ)}{\cos (b^\circ)}=\tan (b^\circ)$

$\sin (b^\circ)=\tan (b^\circ)\times \cos (b^\circ)$

$\sin (b^\circ)=\dfrac{3}{4}\times \dfrac{4}{5}$

$\sin (b^\circ)=\dfrac{3}{5}$

Therefore, $\sin (b^\circ)=\dfrac{3}{5}$ .

5 0

4 years ago

3x - y = 7<br> y= 2x +2<br> What’s the answer

ElenaW [278]

Answer:

y=20,x=9

When doing problems like this it is important to always note: whatever you do to one side of the = sign you have to do to the other side.

Step-by-step explanation:

For this problem it helps that they already give you what y equals to so you can plug y in the top equation to figure out what x is. See attachment for step by step process

6 0

3 years ago

In a hospital, there are 250 registered nurses. 100 of the nurses are males. What is the ratio of male nurses to female nurses i

Dimas [21]

Answer:

The ratio of male nurses to female nurse in lowest terms is: 2:5

Step-by-step explanation:

Given: In a hospital, there are total 250 registered nurses.

Number of nurses are males = 100

Number of nurses are females = 250 - 100 = 150 [ Total nurses - number of male nurses]

To find the ratio of male nurse to female nurses in lowest terms;

A ratio shows that the relative sizes of two or more values.

Then,

$\frac{Number of male nurses}{Number of female nurses}$ = $\frac{100}{250}$

= $\frac{100}{250} =\frac{10}{25} =\frac{2}{5}$ = 2:5

Therefore, the ratio of male nurses to female nurses in lowest terms is; 2 :5

7 0

4 years ago

Read 2 more answers