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3 years ago

If you have a mass of 55g that has a volume of 11 ml, what is the density?

Mathematics

1 answer:

Hitman42 [59]3 years ago

5 0

Answer:

D=5g/ml

Step-by-step explanation:

D=M/V

D=55/11

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Amanda earned a score of 940 on a national achievement test that was normally distributed. The mean test score was 850 with a st

hichkok12 [17]

Answer:

lower than Amanda: 816 students

Step-by-step explanation:

An equivalent way in which to state this problem is: Find the area under the standard normal curve to the left (below) 940.

Most modern calculators have built in distribution functions.

In this case I entered the single command normalcdf(-1000,940, 850, 100)

and obtained 0.816.

In this particular situation, this means that 0.816(1000 students) scored lower than Amanda: 816 students.

6 0

3 years ago

Read 2 more answers

Dora has 10 seashells and plans to add 2 shells every week. Jerri has 4 seashells and plans to add 5 shells every week. Which sy

Mariulka [41]

Answer:

Let x represents the week and y represents the seashells

As per the statement:

Dora has 10 seashells and plans to add 2 shells every week.

"2 shells every week" means 2x

⇒y = 10 + 2x

It is also given, Jerri has 4 seashells and plans to add 5 shells every week.

"5 shells every week" means 2x

⇒ y = 4 + 5x

The system of equation would be used:

y = 10 + 2x

y = 4 + 5x

Since, the girls have the same number of seashells

⇒ $10 + 2x = 4 + 5x$

Subtract 4 from both sides we get;

$6 + 2x = 5x$

Subtract 2x from both sides we get;

$6= 3x$

Divide by 3 both sides we have;

x = 2 weeks.

Therefore, the number of weeks would it be before the girls have the same number if seashells is, 2 weeks.

3 0

3 years ago

The volume of a rectangular prism is

Feliz [49]

Answer:

h = v/lw .

Step-by-step explanation:

v=lwh

Divide both sides by lw:

v / lw = h.

6 0

3 years ago

HELP!! Find the third term of (x^2+3y)^3

lana66690 [7]

Answer:

$T_{3}=27{x}^{2}y^2$

Step-by-step explanation:

The given binomial expression is:

$( {x}^{2} + 3y)^{3}$

When we compare to:

${(a +b)}^{n}$

We have

$a = {x}^{2}$

$b = 3y \\ n = 3$

The nth term is given by;

$T_{r+1}=^nC_ra^{n-r}b^r$

To find the 3rd term, we put:

$r + 1 = 3 \\ r = 2$

We substitute into the formula to get:

$T_{3}=^3C_2( {x}^{2} )^{3-2}(3y)^2$

We simply:

$T_{3}=3( {x}^{2} )^{1} \times 9y^2$

$T_{3}=27{x}^{2}y^2$

3 0

3 years ago

Find the value of x 2x degrees and 3x degrees .. they are supplements angles

oee [108]

Answer:

2x+3x=180°

that is 5x=180°meaning x=32°

4 0

3 years ago