1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
stellarik [79]
3 years ago
8

Latrice is given an unknown substance and is asked to identify is based on his properties. She measures its mass as 239.6grams.

The cubes length, width and height are 3 cm. What is the unknown substance
Mathematics
1 answer:
Iteru [2.4K]3 years ago
8 0

Answer:

density =8.87g/cm³

From chart the density shows that it is a Colsibro copper alloy, a precipitation hardening copper nickel silicon.

Step-by-step explanation:

This problem bothers on the density of substances

Given data

Mass m of substance = 239.6grams

length l=3cm

width b=3cm

height h=3cm

Volume of substance =l*b*h

=3*3*3=27cm³

We know that the density of the substance ρ=mass/volume

ρ= 239.6/27= 8.87g/cm³

You might be interested in
g What is the probability of being dealt exactly three of a kind (like three kings or three 7’s, etc.) in a five card hand from
Elena L [17]

Answer: 0.02257

Step-by-step explanation:

Given : Total cards in a deck = 52

Number of ways to select any 5 cards : ^{52}C_5

Since , there are total 13 kinds of card (includes Numbers from 2 to 9 and Ace , king, queen and jack).

Of each kind , there are 4 cards.

Number of ways to select three cards in a five card hand of a single kind : ^{4}C_3\times^{48}C_2

Number of ways to select three cards in a five card hand of a exactly three of a kind : 13\times^{4}C_3\times^{48}C_2

Now , the required probability = \dfrac{13\times^{4}C_3\times^{48}C_2}{^{52}C_5}

=\dfrac{13\times4\times\dfrac{48!}{2!46!}}{\dfrac{52!}{5!47!}}\\\\\\=\dfrac{58656}{2598960}

=0.022569027611\approx0.02257

∴ The probability of being dealt exactly three of a kind (like three kings or three 7’s, etc.) in a five card hand from a deck of 52 cards= 0.02257

8 0
3 years ago
Find the area of the shape shown below.
hichkok12 [17]

Answer:

26.75 units ^2

Step-by-step explanation:

Since the shape is complex, divide it into 3 right angled triangles and one square. Find the area of these individual shapes first, then fin the sum of these area to calculate the ultimate area of e complex shape:

Triangle 1 = 1/2 x 2 x 5 = 5 units ^2

Triangle 2 = 1/2 x 2 x 2 = 2 units ^2

Triangle 3 = 1/2 x 3.5 x 9 = 15.75 units ^2

Square = 2 x 2 = 4 units squared.

Now add all these up 15.75 + 2 + 5 + 4 = 26.75 units squared.

Hope this helps

6 0
3 years ago
How do you find the arctan 4/3 ? (Without a calculator)
Soloha48 [4]
If arctan 4/3 = the tangent of that angle will be 4/3 , opposite 4 over adjacent 3

Now, you only have to take the sin of that angle it's opposite 4 over hypotenuse 5. 

You will get that the answer is 4/5

hope this helps



7 0
3 years ago
Evaluate the expression when a = 9, b = 2, c = - 6 and d= -4<br> a-b<br> c-d
Anna35 [415]

Answer:

1. 9-2=7

2. -6-(-4)=-2

Step-by-step explanation:

a=9

b=2

c=-6

d=-4

8 0
1 year ago
A manufacturing company uses an acceptance scheme on production items before they are shipped. The plan is a two-stage one. Boxe
kicyunya [14]

Answer:

WOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOW IDK

Step-by-step explanation:

LOL :)

7 0
3 years ago
Other questions:
  • What is the unit rate, expressed in kilometers per minute?
    14·1 answer
  • Find the slope (-16, -2) and (-19, -9)
    8·2 answers
  • Xavier wants to buy a pair of jeans. The original price of the jeans is
    13·2 answers
  • Solve the equation d = gh - f for h.
    6·2 answers
  • A grocery store charges $1.49 per pound of bananas. Use a unit rate to find the price of 3 pounds of bananas.
    15·1 answer
  • What is the 3rd terms of the sequence:<br> f(1)=-3, f(n)= f(n-1)+5
    11·1 answer
  • Pretty simple just fill in the blank from the drop down menu please !
    11·2 answers
  • A truck like the one shown delivers a load of gasoline to a gas station 3 times a week. The storage tank at the gas station hold
    7·1 answer
  • Could someone please help
    8·1 answer
  • Nnnnnnnnnnnnnnnnnnnnnnn
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!