Answer:
$21
Step-by-step explanation:
630 ÷ 30 = 21
think it's right
lead has a density of 11.35g/cm'3. a lead ball weighs about 2kg. what is the radius of this ball
Answer:
The radius of the ball is 3.48 cm
Step-by-step explanation:
Density
The density of a substance is the mass per unit volume. The density varies with temperature and pressure.
The formula to calculate the density of a substance of mass (m) and volume (V) is:
[tex]\displaystyle \rho=\frac{m}{V}[/tex]
The density of lead is \rho=11.35\ g/cm^3 and the mass of a ball of lead is m=2 kg=2,000 g. We can calculate the volume by solving for V:
[tex]\displaystyle V=\frac{m}{\rho}[/tex]
[tex]\displaystyle V=\frac{2000\ g}{11.35\ g/cm^3}[/tex]
[tex]V=176.2115\ cm^3[/tex]
Since the shape of the object is a sphere, and the volume of a sphere of radius r is:
[tex]\displaystyle V=\frac{4}{3}\cdot \pi\cdot r^3[/tex]
We can solve for r and obtain:
[tex]\displaystyle r=\sqrt[3]{\frac{3V}{4\pi}}[/tex]
Substituting:
[tex]\displaystyle r=\sqrt[3]{\frac{3*176.2115}{4\pi}}[/tex]
[tex]\displaystyle r=\sqrt[3]{42.0674}[/tex]
[tex]\boxed{r=3.48\ cm}[/tex]
The radius of the ball is 3.48 cm
A rectangular prism has a length of 2 inches, a width of 4 1/6 inches and a height of 6 inches. What is the volume of the figure?
Answer:
K
Step-by-step explanation:
I will give you 15 points
Answer: A, D
Step-by-step explanation:
The marked price of an article is Rs 2,800 which is 40 % above the cost price. If it
is sold by allowing 20 % discount, what will be the profit percent?
Answer:
mp=2800
mp=cp+40%ofcp=cp+40/100×cp=1.4cp
2800=1.4çp
cp=2800/1.4=2000
discount=20%
profit%=?
Step-by-step explanation:
sp=mp-discount%of mp=2800-20/100×2800=2240
profit=sp-cp=2240-2000=240
profit%=profit/cp×100%=240/2000×100%=12%
Answer What is the value of p in the linear equation
−4
−2
2
4
Question 2
If MNP = 107, what is NMQ?
Answer:
73 degrees
Step-by-step explanation:
how do you find valume in a square.
Answer:
Since each side of a square is the same, it can simply be the length of one side cubed. If a square has one side of 4 inches, the volume would be 4 inches times 4 inches times 4 inches, or 64 cubic inches.
Step-by-step explanation:
please help asap also brainly
At a given high school, the probability that a student is taking a geometry class is 0.24. The probability that a student is taking a chemistry
class and a geometry class is 0.18.
If a student is taking a geometry class, what is the probability that the student is also taking a chemistry class?
Answer:
0.24
Step-by-step explanation:
how fast does the squirrel run? if you help me ill mark you brainliest
Answer:
The squirrel runs 11 miles per hour.
Explanation:
Speed can be found from the the slope of the graph of distance over time. From this graph the easiest point to calculate this on is the two endpoints. Slope is rise/run. In this graph Y has increases by 11 miles (rise) at the point where time has increased by one hour (run). So the speed can be found with 11 miles/ 1 hour which equals 11 miles per hour.
Write an inequality to represent each sentence.
1. A number cis at least 12.
Answer:
n ≤ 12
Step-by-step explanation:
The variable n represents a number. Since you see the phrase “at least” that means that it could be less than, or equal to that number. Therefore, the inequality to represent this sentence is n ≤ 12.
I hope this helps you :D
mrs moore is doing laundry and has various pieces of clothing in her laundry basket. what is the probability of selecting a top rather than a bottom ( 3 pants and 1 top)
Given f(x) = 2x2 - 4, what is f(3)
Answer:
x=3f/2+1 sorry if thats not right because i don't know if it's a positive or negative there
Step-by-step explanation:
Answer:
14
Step-by-step explanation:
just plug in 3 for x
2*3^2-4 = 18-4 = 14
17. The base of a parallelogram is 10 meters. The height is one fourth of the base. Find the area of the parallelogram.
pleaaeee help
Answer:
25m2
Step-by-step explanation:
b = 10
10 divided by 4 = 2.5
h = 2.5
2.5 times 10 = 25m2
please help me on this will give you brainliedt
Answer:
x = 38
Step-by-step explanation:
Exterior Angle Theorem
x + 99 = 137
subtract 99 from both sides and...
x = 38!
Answer:
137-99 would equal the missing angel which is 38°
2.72603 in two decimal place
What Percent of 25 is 10 ?
Answer:
40
Step-by-step explanation:
Answer:
40% (see below)
Step-by-step explanation:
First, make a ratio to simplify your situation:
Think about it like this:
If 25 is 100%, and the question is asking me for 10, which is x%, then what is x%?
Here's what I'm talking about:
10 x%
------ = --------
25 100%
Now, just cross multiply and simplify:
1000 = 25x
40 = x
x = 40
To check your answer, you can multiply 25 by 0.4 (the decimal form of 40%) to see if it worked because 40% of 25 is 10:
25 (0.4)
10
Jonathan deposits $6,000 in a savings account that pays 2.1% interest compounded
quarterly. What is his balance after one year?
Given:
Principal= $6000
Rate of interest = 2.1% compounded quarterly.
To find:
The balance after one year.
Solution:
The formula for amount is:
[tex]A=P\left(1+\dfrac{r}{n}\right)^{nt}[/tex]
Where, P is principal, r is rate of interest, n is number of times interest compounded in an year and t is number of years.
We have, P=6000, r=0.021, n=4 and t=1.
Putting these values in the above formula, we get
[tex]A=6000\left(1+\dfrac{0.021}{4}\right)^{4(1)}[/tex]
[tex]A=6000\left(1+0.00525\right)^{4}[/tex]
[tex]A=6000\left(1.00525\right)^{4}[/tex]
[tex]A=6126.9957[/tex]
[tex]A\approx 6126.996[/tex]
Therefore, the balance after one year is $6126.996.
Answer:
C. $7,800
Step-by-step explanation:
Answer if correct 70 points Brainly
Answer:
I am not very sure, but I think the answer is
D.
Answer:
answer is d becuase i took the test and got it right
Step-by-step explanation:
the link is visable tho
A line graph titled Car Mileage for a Hybrid Car has number of gallons on the x-axis, and number of miles on the y-axis. 1 Gallon is 60 miles, 2 gallons is 120 miles, 3 gallons is 180 miles, and 4 gallons is 240 miles.
What is the value of y when the value of x is 1?
Free 50 pts its [60]
Answer:
60
Step-by-step explanation:
Answer:
Step-by-step explanation:
hello! I need a bit of help here
What is the value of s? Please show work
Answer:
S = 15
That the answer :) .
Answer:
s=90°
Step-by-step explanation:
a triangle always gives 180°, so 180°-(47°+43°)= 180°-90=90°
s=90°
hope this helps
What is the value of y=10x+2 when x=4
Answer:
y = 42
Step-by-step explanation:
Given
y = 10x + 2 ← substitute x = 4
y = 10(4) + 2 = 40 + 2 = 42
Answer:
=42
Step-by-step explanation:
y=10(4)+2
10 x 4 = 40
40 + 2 = 42
y=42
Help help help help help
Answer:
The equation of the line is:
y = 3xStep-by-step explanation:
Given the table
x y
0 0
1 3
2 6
3 9
4 12
The slope-intercept form of the line equation
[tex]y = mx+b[/tex]
where
m is the slopeb is the y-interceptTaking the two points from the table
(1, 3)(2, 6)Determining the slope between (1, 3) and (2, 6)
(x₁, y₁) = (1, 3)
(x₂, y₂) = (2, 6)
Using the formula
Slope = m = [y₂ - y₁] / [x₂ - x₁]
= [6 - 3] / [2 - 1]
= 3 / 1
= 3
Thus, the slope of the line = m = 3
We know that the value of the y-intercept can be determined by setting x = 0 and determining the corresponding value of y.
From the table, it is clear
at x = 0, y = 0
Thus, the y-intercept b = 0
now substituting m = 3 and b = 0 in the slope-intercept form of the line equation
y = mx + b
y = 3x + 0
y = 3x
Therefore, the equation of the line is:
y = 3xThe graph of the line equation y = 3x is also attached.
Find 3 ratios that are equivalent to the given ratio.
12:14
Order of Operations Question
P
E
M
D
A
S
Answer:
c.
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
what are the factors to 424,380
Answer:
the factors are: 1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 643, 660, 1286, 1929, 2572, 3215, 3858, 6430, 7073, 7716, 9645, 12860, 14146, 19290, 21219, 28292, 35365, 38580, 42438, 70730, 84876, 106095, 141460, 212190, 424380.
Step-by-step explanation:
What is the best estimate of the area of the figure in square inches?
Answer:
100.26 squared inches
Step-by-step explanation:
(πr²)/2 + lb + (bh)/2
= 28.26 + 60 + 12
The manager at Gabriela's Furniture Store is trying to figure out how much to charge for a book shelf that just arrived. The book shelf was bought at a wholesale price of $147.00, and Gabriela's Furniture Store marks up all furniture by 60%
A cone has volume 12pie cubic inches. Its height is 4 inches. What is its radius?
A.) 6 inches
B.) 4 inches
C.) 12 inches
D.) 3 inches
Answer:
r = 3
Step-by-step explanation:
The formula of a volume of a cone
V= 1/3 pie r^2 H
r - radius
H - height
We have V = 12π in³ and H = 4 in. Substitute:
The radius of the cone is 3 inches
Volume of a conev = 1 / 3 πr²hwhere
h = height
r = radius
Therefore,
v = 12π
h = 4
12π = 1 / 3 × π × r² × 4
12 = 4 /3 r²
36 = 4r²
r² = 36 / 4
r = √9
r = 3 inches
learn more on cone here:https://brainly.com/question/9837241