Answer:
1 cubic foot of gold will weigh 1209.6 pounds
1 cubic foot of copper will weigh 559 pounds.
Step-by-step explanation:
Density = Mass/Volume
Mass = Density × Volume
Volume of each metal = 1 ft³
a) Gold
Density of Gold = 0.70 pounds per cubic inch(lb/in³)
We will be converting the Volume of gold from cubic foot to cubic inches
The Volume of gold given in the question = 1 cubic foot = 1 ft³
1 cubic foot = 1728 cubic inches
Hence, the volume of Gold = 1728 in³
Mass of Gold = Density of Gold × Volume of Gold
Mass of Gold = 0.70Ib/in³ × 1728 in³
= 1209.6 lb(pounds)
2) Copper
Density of copper = 8.96 grams per cubic centimeter
Ib = pounds
We convert this density in g/cm³ to ib/in³
453.5g = 1 Ib
8.96g = y Ib
Cross Multiply
= 453.5g × y Ib =8.96g × 1 Ib
= y Ib = 8.96g × 1 Ib/453.5g
y Ib = 0.0197574421 Ib
Density of Copper = 0.0197574421 Ib/cm³
28,316.8 cm³ = 1 ft³
1 cm³ = x ft³
x ft³ = 1 cm³ × 1 ft³/28,316.8cm³
x ft³ = 0.0000353147 ft³
1 cm³ = 0.0000353147 ft³
We have to convert the density of Copper from Ib/cm³ to Ib/ft³
0.0197574421 Ib/cm³ = 0.0197574421 Ib/0.0000353147 ft³
559.46793026 Ib/ft³
Volume of copper = 1ft³
Mass = Density × Volume
Mass of copper = 559.46793026 Ib/ft³ × 1 ft³
= 559.46793026 Ib or pounds
≈ 559 pounds
Therefore , the weight of gold is 1209.6 pounds and the weight of copper will be 559 pounds.
An egg is dropped from a height of 90 ft. If acceleration due to gravity is –16 ft/s2 and initial velocity is 0 ft/s, approximately how long will it take for the egg to reach the ground? h(t) = at2 + vt + h0 1.9 s 2.4 s 9.7 s 40.7 s
Answer:
B
Step-by-step explanation:
I answered it on edge
2.45 seconds will it take for the egg to reach the ground.
What is height?Height can be defined the vertical distance from the top to the base of the object.
Given
Height h(t) = 90 ft
Acceleration due to gravity a = -16 ft/[tex]s^{2}[/tex]
Initial velocity v = 0
[tex]h_{0}[/tex] = 0
[tex]h(t) = at^{2} +vt+h_{0}[/tex]
90 = 16[tex]t^{2}[/tex] + 0
90 = 16[tex]t^{2}[/tex]
[tex]t^{2} = \frac{90}{16}[/tex]
[tex]t^{2}=5.625[/tex]
t = [tex]\sqrt{5.625}[/tex]
t = 2.45
Hence, 2.45 seconds will it take for the egg to reach the ground.
Find out more information about height here
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How much fencing is needed to make the cage area?
Answer:
260 feet
Step-by-step explanation:
Just completed the Imagine Math
write 4x^2+4x+1 as a binomial squared Plz explain too, this is so hard
Answer:
(2x+1)(2x+1)
Step-by-step explanation:
Factor=4x^2+4x+1
4x^2+4x+1 =(2x+1)(2x+1)
Find the area 12 6 5 14
Answer:
35
Step-by-step explanation:
In this shape we have to use the formula: A= 1/2xbxh
So we use this formula. 1/2 X (5 X 14)= 35
write a word phrase 3x-4
Answer:
3 times a number x subtracted by 4
Which equation represents the graph y=10-x y=x-10 y=-x-10 y=10+x
Answer:y=10-x
Step-by-step explanation: 10 is the y-intercept and -x is the slope
Answer:
y = 10 – x
Step-by-step explanation:
did it on edgen
x2 = 9/16 = x = show your work
Answer:
Explanation:
x
2
−
9
=
16
or
x
2
=
16
+
9
or
x
2
=
25
or
x
=
√
25
or
x
=
±
if f(x) and f^-1(x) are inverse functions of eachother and f(x)=2x+5, what is f^-1(8)
Answer:
1.5
Step-by-step explanation:
The value of x such that f(x) = 8 is ...
8 = 2x +5
3 = 2x
1.5 = x
f^-1(8) = 1.5
The student council decided that for every ticket purchased, the buyer receives a certain number of entries for the raffle drawing. The table below shows this. A 2-column table with 4 rows. Column 1 is labeled Tickets purchased with entries 1, 2, 3, 4. Column 2 is labeled Entries with entries 3, 4, 5, 6.
Answer:
C
Step-by-step explanation:
Answer:
1. y = x +2
2. 22
Step-by-step explanation:
took assignment
pls brainlist
Michael had saved $257.40; he had deductions of $21.82 for dinner and $ 150.32 for clothes he purchased. After receiving his monthly allowance of $45, how much money does Michael have?
Answer:
130.26
Step-by-step explanation:
257.40-21.82-150.32=45=130.26
when I triple my number and add five I get twenty-six what is my number
Answer:
7
Step-by-step explanation:
26-5=21
21 divided by 3 equals 7.
Answer: 7
Step-by-step explanation:
26 - 5 = 21
21 / 3 = 7
hope this helps
plz mark brainleist
PLEASE HELP I WILL MARK YOU BRAINLIEST
Answer:
B
Step-by-step explanation:
[tex]\frac{2}{3}[/tex] × 63 = 2 × 21 = 42
Her prediction was correct as [tex]\frac{2}{3}[/tex] of 63 = 42 → B
can someone help me please
Answer:
[tex]\huge\boxed{N}[/tex]
Step-by-step explanation:
In order to find the midpoint of LQ, we need to find how long it is.
We can do this by finding the distance between L (-4) and Q (8).
From -4 to 0, it's 4.
From 0 to 8, it's 8.
So the total distance is [tex]8+4=12[/tex].
The midpoint of 12 units will be 6 units past L. We know that L is -4 so let's add 6 to it.
[tex]-4 + 6 = 2[/tex]
N is located at 2, so N is the midpoint of LQ.
Hope this helped!
The Campbell family uses up to 1/2 gallon jug of milk every 3 days. At what rate do they drink milk?
Answer:
1/6
Step-by-step explanation:
1/2 divided by 3
Answer:
1/6
Step-by-step explanation:
Plz help me I need this for a grade
Answer:
It not a function... the two points would be (0,3) and (-3,0)
Step-by-step explanation:
which is a prime number 21 23 25 27 29
Answer:
29 :)
it is 29 because 29 falls under all the prime number characteristics
How do you solve for x and y in this matrix equation?
Answer:
Hi!
I might be able to help you!
The Matrix Solution
It means that we can find the values of x, y and z (the X matrix) by multiplying the inverse of the A matrix by the B matrix.
The matrix method is similar to the method of Elimination as but is a lot cleaner than the elimination method. Solving systems of equations by Matrix Method involves expressing the system of equations in form of a matrix and then reducing that matrix into what is known as Row Echelon Form.
I apologize if this didn't help you, but God bless you and your family!
A pet store has k tanks of fish. Each tank has 28 fish. Using , write an expression for the total number of fish in the store.
Answer:
28k
Step-by-step explanation:
There are k tanks with 28 fish each
The total number of fish is
28k
Answer: 28k
k represents the number of fish tanks.
If we have that then we can multiply and solve for the total number of fish.
Best of Luck!
Given the expression 5x^2y+ 2x - 4xy^2 - 5xy + 9x^2y, select the like term that would combine with 5x^2y.
The system represents lines that
, therefore the system has
Answer:
are parallel, no solution is the correct answer
Step-by-step explanation:
edge
The system may represent two parallel lines and have no solution. Then the correct option is B.
What are parallel lines?When the distance between the lines is constant, then the lines are called parallel lines. The lines do not intersect when they are separated from each other. And the slope of the lines is equal.
A system of linear equations contains two equations with the same slope.
The system may represent two parallel lines and have no solution.
Then the correct option is B.
The complete question is given below.
A system of linear equations contains two equations with the same slope. Select all the correct statements.
A. The system represents perpendicular lines and has one solution.
B. The system may represent two parallel lines and have no solution.
C. The system may represent the same line and have infinitely many solutions.
D. The system represents perpendicular lines and has two solutions.
More about the parallel lines link is given below.
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20 (20 minus x) = 300 What is the value of x?
Answer:
5
Step-by-step explanation:
20 ( 20 - x ) = 300
By transposing,
20 - x = 300 / 20
20 - x = 15
-x = 15 - 20
-x = -5
- and - get cancelled
so, x = 5
Hope this helps
plz mark as brainliest!!!!!!
if DF=78, DE=5x-9, and EF=2x+10 Find EF
Answer:
EF = 32
Step-by-step explanation:
DE + EF = DF
5x - 9 + 2x + 10 = 78
5x + 2x + 10 - 9= 78
7x + 1 = 78
7x = 78 - 1
7x = 77
x = 77/7
x = 11
[tex]EF=2x+10 = 2 \times 11 + 10 \\ EF=22 + 10 \\ \huge \red { \boxed{EF=32}}[/tex]
After 8 minutes, a vessel had descended 640
feet. What was the change in elevation of the
vessel each minute?
Answer:
80
Step-by-step explanation:
It's super simple if after 8 minutes a vessel had descended 640 feet the change in the elevation of the vessel was 80ft each minute. Hope this helps :)
Answer:
80 feet per minute
Step-by-step explanation:
Mike had $1,800 in his bank account. Thirty days later, his account balance was $570. Write an integer an integer to represent the average change in his balance each day during his time
Answer:
The average change in balance each day during his time $41
Step-by-step explanation:
Here, we want to write an integer to represent the average balance change in the 30 days period.
First, let’s find difference between opening and closing balance= (1800-570) = 1230
We shall now divide this by 30 = 1230/30 = $41
Answer:
The average chang in his time is 41
Step-by-step explanation:
2. Sam is climbing 2/3 meters every 1/3 of an hour. How many meters does
he climb per hour? Enter your answer in simplest form. *
Answer:
2/9
Step-by-step explanation:
if u multiply 2/3 × 1/3 u get 2/9
Solve for x.
7y-6y-19=13
Answer:
Y=32
Step-by-step explanation:
Answer:
the answer is y=32
Step-by-step explanation:
7y-6y-19=13
collect the like terms
7y-6y=13+19
y=32
mark me as brainliest plyyzzz
If the temperature outside was 73 degrees at 5:00 p.m. but if fell 19 degrees by 10 p.m. What is the temperature at 10:00 p.m.? Write an equation and solve.
Answer:
54°
Step-by-step explanation:
1. 73° at 5pm - dropped 19 by 10 pm
2. subtract using this equation: 73 - 19 =
3. solve- 73 - 19 = 54
hope this helps!!!
What is the solution of this equation? 7y -4 = 9y +13 -4y
Answer:
y = 8.5
Step-by-step explanation:
7y - 4 = 9y +13 - 4y
First arrange to combine like terms.
7y - 4 = 9y - 4y + 13
7y - 4 = 5y + 13 Subtract 5y from each side
7y - 5y - 4 = 5y - 5y + 13
7y - 5y - 4 = 13
2y - 4 = 13 Add 4 to each side
2y - 4 + 4 = 13 + 4
2y = 13 + 4
2y = 17 Divide each side by 2
2y/2 = 17/2
y = 17/2 or 8[tex]\frac{1}{2}[/tex] or 8.5
A number divided by three is nIne
Answer:
27
Step-by-step explanation:
x / 3 = 9
x = 3 * 9
= 27
Hope I helped!
Which of the following is an arithmetic sequence?
A. 3,0,-3,-6
B.2,4,16,32
C.5,-5,5,-5
D.2,3,7,1
Answer:
A. 3, 0, -3, -6
Step-by-step explanation:
The sequence with constant first differences is an arithmetic sequence. The sequence of A has a common difference of -3, so is an arithmetic sequence.
