Density is calculated by dividing the mass by volume. A student measures the mass of an 8 cm3 object as 12.9g. What is the density of the object to the nearest tenths with proper units?

a.) 2 g/cm3
b.) 1.61 g/cm3
c.) 1.5 g/cm3
d.) 1.6 g/cm3

Answers

Answer 1
Answer: D

Density= mass/volume

12.9g/8cm3= 1.6 g/cm3

Related Questions

The water level in a pool drops 8 iches in a day so what is the average level drop in each hour

Answers

Answer:

0

Step-by-step explanation:

becuse  8 is in a day and the only thing could be 0 becuse in a hour you might not get much in an hour cuz an day is 24 hours but there might be a chance to be 1 but its mostly 0.

6.204 = 6 + 0.2+ ? What is it?

Answers

Answer:

0.004

Step-by-step explanation:

6.204 = 6 + 0.2 + 0.044.

The answer is 0.004.

Use the given conditions to write an equation in point-slope form. Keep parenthesis in point-slope form. passing through (3,5) and (8,15).

Answers

Answer:

Step-by-step explanation:

(15 -5)/(8 - 3)= 10/5 = 2

y - 5 = 2(x - 3)

y - 5 = 2x - 6

y = 2x - 1

What is the value of n?

Answers

Answer: 3 cm

Step-by-step explanation:

Set up a proportion to find the value of n. 4/8 = n/6Cross multiply. 8x = 24Divide 8 on both sides. x = 3

PLZ Help
This is due by 2:20

Answers

Answer:

The answer is 60 degrees.

Step-by-step explanation:

The three angles in any triangle add up to 180 degrees.

You know by the box at the bottom right that it's a right triangle and therefore that angle is 90 degrees. They also give you the 30 degree angle at the bottom left. So:

90 degrees + 30 degrees = 120 degrees.

180 degrees (total) - 120 degrees (first 2 angles) = 60 degrees (missing angle)

Hope this helps!

The ground temperature at Brigham Airport is 17 °C. The temperature decreases by 4.9 °C for every increase of 1 kilometer above the ground. What is the
temperature outside a plane flying at an altitude of 5 kilometers?

Answers

Answer:

should be -7.5

Step-by-step explanation:

4.9×5=24.5

17-24.5=-7.5

Pls help pls ASAP 1,2,3,4

Answers

Answer:

3

Step-by-step explanation:

Answer: the third on i think

Step-by-step explanation:



Which angles are right?

Check all that apply.

A. GFE

B. MLK

C. EFH

D. KLJ

Answers

can you please add a picture?

Answer:

<MLK

<EFH

<KLJ

Step-by-step explanation:

Each Is At A Right Angle, I Just Answered This On My Quiz.

Find the midpoint of the line segment with the given endpoints (-3,1 -2,8) (-4.92,-3.3)

Answers

Answer: (4.01, -3.05)

Step-by-step explanation:

Use the midpoint formula (x1+x2/2,y1+y2/2)

-3.1 + -4.92 /2 =4.01

-2.8 + -3.3 /2 = -3.05

(4.01, -3.05)

18/42=X/14 solve the proportion

Answers

Answer:

x = 6

Step-by-step explanation:

18/42=x/14
(Use cross multiplication)
252=42x
(Swap the sides)
42x=252
(Divide both sides of the equation by 42 because we want to get the x alone)
X=6

Simplify the ratio 24/36

Answers

Answer:

2:3

Step-by-step explanation:

24:36

24÷12=2

36÷12=3

Answer=2:3

Answer:

2 : 3

Step-by-step explanation:

24/36 ?

[tex] \frac{24}{36} \div \frac{12}{12} \\ = \frac{24 \div 12}{36 \div 12} \\ = \frac{2}{3} [/tex]

2/3 = 2 : 3

The planet Mars has a radius of 3400 km. What is the volume of Mars?

Write your answer in scientific notation to three decimal places.

Answers

Answer:

1.646×10¹¹ km³.

Step-by-step explanation:

From the question given, we obtained the following information:

Radius (r) = 3400 km

Volume (V) =.?

The shape of a planet is spherical in nature. Thus, we shall apply the formula for calculating the volume of a sphere to obtain the volume of Planet Mar as illustrated below:

Radius (r) = 3400 km

Pi (π) = 3.14

Volume (V) =.?

Volume of a sphere = 4/3 πr³

V = 4/3 × 3.14 × (3400)³

V = 4/3 × 3.14 × 3.9304×10¹⁰

V = 1.646×10¹¹ km³

From the calculations made above, the volume of Planet Mar is 1.646×10¹¹ km³

MO bisects LMN mLMN = 8x-23 and mLMO= 2x+37 solve for x and find LMN

Answers

Answer:

see explanation

Step-by-step explanation:

Since MO bisects ∠ LMN then

∠ LMO and ∠ NM0 are congruent, thus

∠ LMN = ∠ LMO + ∠ NMO , substitute values

8x - 23 = 2x + 37 + 2x + 37 = 4x + 74 ( subtract 4x from both sides )

4x - 23 = 74 ( add 23 to both sides )

4x = 97 ( divide both sides by 4 )

x = 24.25

Thus

∠ LMN = 8x - 23 = 8(24.25) - 23 = 194 - 23 = 171°

Rey is considering buying shares of TWA stock. The stock currently sells for $50 per share. The stock changes in value at 9:00 am each day, either increasing in value by $11 or decreasing in value by $13. The stock will increase in value with 40% probability, and decrease in value with 60% probability. The stock follows a random walk. In two days, what is the probability that the TWA stock is greater than $30

Answers

Answer: 64%

Step-by-step explanation:

Given the following :

Current price of stock = $50

Probability of increase per day = 40% = 0.4

Probability of decrease = 60% = 0.6

Value of increase = $11

Value of decrease = $13

Probability that stock is greater than $30 in two days :

For stock to be greater than $30 in two days ;

It either increases in both days or increases in a day and falls the other

Hence, probability that stock is greater than $30

P(increase and increase) OR P(increase and decrease) OR P(decrease and increase)

(0.4 × 0.4) + (0.4 × 0.6) + (0.6 × 0.4)

0.16 + 0.24 + 0.24 = 0.64

0.64 × 100 = 64%

1
This angle pair makes a straight line, so they are supplementary
130
50
A True
B False

Answers

a-true because you would add 130 and 50 = 180 which is the measure of a supplementary angle

Answer:

True

Step-by-step explanation:

Supplementary angles always equal to 180 degrees, and the sum of 130 and 50=180 degrees.

In a sample fruit basket, there are 2 apples for every 3 oranges.
To make a large fruit basket with the same ratio using 20 apples, how many oranges are needed?


Help me please?!

Answers

Answer:

B 32

Step-by-step explanation:

30 oranges would be required to maintain the same ratio with 20 apples.

Solving linear equation.

In the example fruit basket, there are 2 apples for every 3 oranges, based on the provided ratio.

We must establish a proportion in order to determine how many oranges are required to keep the same ratio with 20 apples.

Let "x" stand for the required quantity of oranges.

The ratio can be configured as follows:

20 apples/x oranges = 2 apples/3 oranges.

Cross-multiplication allows us to find the value of "x":

3(20) = 2x

2x = 60

x = 30

As a result, 30 oranges would be required to maintain the same ratio with 20 apples.

Learn more on linear expression here:  https://brainly.com/question/2030026

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Add a taco truck, Jeffrey ordered 3 pork tacos and 2 steak tacos. If p represents the cost of a pork taco, and s represents the cost of a steak taco, write an expression that represents the total cost of the order.

Answers

Answer:

3p + 2s = c

Step-by-step explanation:

He ordered 3 pork tacos so it would be 3 times p and he ordered 2 steak tacos so it would be s times 2

Answer:5 is the answer

Step-by-step explanation:

3p+2s+5

a 2-pack of frozen burritos costs 2.32.what is the unit price ?

Answers

$1.16
You just divide $2.32 by 2 and get $1.16, hope this helps :)

HELP!!! Need Some Homework Help!

Answers

Answer:

( -4, 7 )

Step-by-step explanation:

The difference between (2,3) and (-1,5) is (-3,2)

Because (-3,2) is the length of half the line we need to add that figure to M to get point S

(-1,5) plus (-3,2) is (-4,7)

Is this statement true or false?
The period before we have written records is called prehistory
true
false​
It's history

Answers

True it’s prehistory

can somebody help me !

Answers

Answer:

angle 1

Step-by-step explanation:

all others are congruent

Eight less than four times a number is less than 56. What are the possible values of that number?
X>12
X<12
X<16
X>16

Answer:
4x-8<56
4x<64
x<16

Answers

Answer:

hu

Step-by-step explanation:

j

(2/3)^3(1/5•2/3)^-3(1/5)^4

PLS HELP

Answers

Answer:

1/5

Step-by-step explanation:

You have to do whats in the parentheses first then you start doing to exponets from left to right then you would multiply then you would get your answer 1/5.

Can somebody explain to me how to solve this problem? I'm confused

Answers

Step-by-step explanation:

g(x) = f(2x), so g(x) is f(x) compressed by a factor of 2.

So if the domain of f(x) is [1, 5], then the domain of g(x) is [1/2, 5/2].

On the teacher’s desk there were r boxes of pencils, 20 pencils in each. If 23 students got p pencils each, how many pencils are still on the teacher’s desk?

Answers

Answer:

20r-23p

Step-by-step explanation:

7. Chantel Monroe charges $3.75 per page for typing rough drafts and an
additional $0.50 per page for changes and deletions. A manuscript had
212 pages, of which 147 pages had changes and deletions. What was
the total cost of typing the manustript?

Answers

answer

212 - 147 = () times 3.75

147 × 4.25 =

add them together and that's the total amount

Suppose you work for a company that manufactures electronics. The development analysts estimate that 5% of their flagship product will fail within 2 years of the purchase date, with a replacement cost of $ 1200. A newly hired associate at the company proposes to charge $ 50 for a 2-year warranty. 1. Compute the expected value of this proposal. Let X be the amount profited or lost (by the company) on the warranties and P(X) is the probability. 2. Interpret the expected value in complete sentences.

Answers

I’m not sure but I tried

The expected value of the proposal is -$10. This means that, on average, the company can expect to lose $10 per warranty sold.

Interpretation of the expected value:

The expected value of -$10 indicates that, on average, for every 2-year warranty sold, the company can expect to lose $10. This means that the proposal is not a profitable venture for the company. The replacement costs of the 5% of failed products are higher than the revenue generated by selling the warranties and cannot cover the potential losses.

To compute the expected value of the proposal, we need to calculate the amount profited or lost (X) by the company on the warranties and the probability (P(X)) of each outcome.

Now, we have,

The product doesn't fail within 2 years, and the company earns $50 from the warranty.

The product fails within 2 years, and the company incurs a replacement cost of $1200 but keeps the $50 warranty fee.

The probability of the product not failing within 2 years is 1 - 0.05 = 0.95,

and the probability of the product failing within 2 years is 0.05.

Now, we have to find the expected value (E(X)):

[tex]E(X) = P(X_1) * X_1 + P(X_2) * X_2[/tex]

Where:

[tex]P(X_1)[/tex] = Probability of the product not failing within 2 years = 0.95

[tex]X_1[/tex] = Amount profited when the product doesn't fail within 2 years = $50

[tex]P(X_2)[/tex] = Probability of the product failing within 2 years = 0.05

[tex]X_2[/tex] = Amount lost when the product fails within 2 years = -$1150 (Replacement cost of $1200 - $50 warranty fee)

E(X) = 0.95 * $50 + 0.05 * (-$1150)

E(X) = $47.50 - $57.50

E(X) = -$10

The expected value of the proposal is -$10. This means that, on average, the company can expect to lose $10 per warranty sold.

Interpretation of the expected value:

The expected value of -$10 indicates that, on average, for every 2-year warranty sold, the company can expect to lose $10. This means that the proposal is not a profitable venture for the company. The replacement costs of the 5% of failed products are higher than the revenue generated by selling the warranties and cannot cover the potential losses. As a result, the company might want to reconsider the pricing of the warranty or look for other ways to reduce the potential costs associated with the product failures.

To learn more on probability click:

brainly.com/question/11234923

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Each side of a regular pentagon is m+10 inches. The formula for finding the perimeter of the pentagon is shown below.

Answers

Answer:

5m+50

Step-by-step explanation:

since it's regular all sides are equal

it's have 5 sides of m+10

[tex]P=5(m+10)\\\\P=5m+50[/tex]

The baker fits 26 rolls onto a pan that measures 1 5/ 8 ft.² how many square feet does the Baker use for each roll? Show your work.

Answers

Answer:

1/16ft²

Step-by-step explanation:

If 26 rolls fits into 1 5/8 ft² pan, then for us to get the number of square feet for each roll, we will fillw the steps;

26rolls = 1 5/8ft²

1 roll = xft²

26 rolls = 13/8 ft²

1roll = xft²

Cross multiply

26×x = 1×13/8

26x = 13/8

Ceoaa multiply

26x×8 = 13

208x = 13

x =13/208

x = 1/16 ft²

Hence the baker uses 1/16ft² for each roll

Evaluate
5 + 3x for x = -3
I need help on this

Answers

[tex]\text{Hello! :)}[/tex]

[tex]\large\boxed{-4}[/tex]

[tex]\text{Substitute in -3 for "x" in the equation:}[/tex]

[tex]5 + 3(-3) = \\\\5 + (-9) = \\\\5 - 9 = -4[/tex]

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