Step-by-step explanation:
it just means
z = k×x²/y³
12 = k×8²/2³ = k×64/8 = k×8
k = 12/8 = 3/2
24 = k×x²/1³ = 3/2 × x²/1 = 3/2 × x²
24/(3/2) = x²
48/3 = x²
16 = x²
x = 4 or
x = -4
simplify the following 72÷6+3×2
Answer:
18
Step-by-step explanation:
Use PEDMAS
In this, we have to do first division , then multiplication and finally addtion.
72 ÷ 6 + 3*2 = 12 + 3*2 {division is done}
= 12 + 6 {Multiplication is done}
= 18
What is the volume of this cone? Use 3.14 for π and round your answer to the nearest tenth.
In your answer, give the volume of the cone rounded to the nearest tenth, and then explain how you calculated it.
Answer:
volume = 33.5 in³
Step-by-step explanation:
Formula:
[tex]\sf volume \ of \ a \ cone=\dfrac13\pi r^2h[/tex]
Given:
r = 2 inh = 8 inπ = 3.14Substituting the given values into the formula:
[tex]\sf \implies volume=\dfrac13 \times 3.14 \times 2^2 \times 8[/tex]
[tex]=\dfrac13 \times 3.14 \times 4 \times 8[/tex]
[tex]\sf =33.49333333...[/tex]
[tex]\sf =33.5 \ in^3 \ (nearest \ tenth)[/tex]
g. a car travels at 60m/s for 50minutes
south west.calculate how far it will travel
Step-by-step explanation:
first we want to convert it to minutes so we multiply 60m/s by 60. 3600m/min or 3.6km/min
we just multiply 50 by 3.6.
therefore the car travels 180km south west
Pablo had $319 in his savings account. He got $28 for helping a neighbor, and he saved all but $11 of it.
How much is in Pablo's savings account now?
A.
$330
B.
$336
C.
$347
D.
$358
Answer:
the correct answer is B. $336
Step-by-step explanation:
you first add 319 and 28. Then, you subtract the product with 11.
To be honest I think the answer is B
-1/4 (24ab + 8c) please help
Paul leaves £4000 in the bank for two years. It earns compound interest of 5% per year. Calculate the total amount Paul's has in the bank at the end of the two year.
Pls give me working out and explanation !!!!
Answer:
£4400
Step-by-step explanation:
5% of 4000 is 200
200*2=400
4000+400=4400
£4400
Find the measure of the indicated arc
Step-by-step explanation:
we need the length of the arc ?
the length of the arc fully around the circle (360°) is the circumference of the circle : 2×pi×r
and the arc length for 123° is then
2×pi×r×123/360
but we would need r to calculate that. you did not provide that.
the only other thing that comes to mind is : the arc angle is indeed the angle at the center of the circle and is 123°.
i don't know how else to help you, as i cannot think of anything else you might need there.
Need additional math help 50 pts
Answer:
12
Step-by-step explanation:
This thing to know about this question is that angle 1 and angle 3 are actually the same.
When two lines intersect, the opposite angles such as that shown in 1 and 3 are equal to each other.
So what you can do is set angle 1 and 3 equal to each other like so:
5x+10 = 70
Then solve for x
5x+10 = 70
5x = 60
x = 12
A flashlight is projecting a triangle onto a wall
Answer:
24
Step-by-step explanation:
The the triangles are similar, the lengths of corresponding sides are in proportion.
15/20 = 18/n
3/4 = 18/n
1/4 = 6/n
n = 4 × 6
n = 24
Answer:
n = 24
Step-by-step explanation:
In similar triangles, corresponding sides are in same ratio.
[tex]\dfrac{n}{18}=\dfrac{20}{15}\\\\\\n=\dfrac{20}{15}*18\\\\\\n = 4*6\\\\n = 24[/tex]
Joe collects toy cars and marbles. Whenever he collects 4 cars, he also collects 12 marbles. How many marbles does he collect after collecting 20 cars? What rule is being used?
Answer; 60
Step-by-step explanation:
solution:
here,
4 cars = 12 marbles
1 car = 12/4. = 3 marbles
then,
20 cars = 3(20) marbles
= 60 marbles
We can make this into a fraction 4/12 = 20/x
Then, we will solve for x
4x = 240 cross multiply
x = 60
Joe collects 60 marbles after collecting 20 cars.
The Multiplicative Inverse Property is being used.
Use E to decode the coded message matrix
Answer:
D because I was doing it for a while and I know it
Liz records the amount of rainfall in her backyard. It rained 3/8 inch for 4 days in a row.
Which shows the amount of rainfall after 4 days?
A : 1 4/8
B : 1 5/8
C : 1 6/8
D : 1 7/8
If x = 9 units , y = 3 units , and h= 11 units what is the area of the trapezoid
Hey there!
Your area of a trapezoid
a = a + b / 2(h)
area = base + base / 2(height)
YOUR EQUATION:
area = 9 + 3 / 2(11)
area = 12/2(11)
area = 6(11)
area = 66
Thus, your answer is probably: 66
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
A closet contains 5 cases of laundry detergent. Each case contains 12 bottles. Each bottle contains 3 liters of detergent.
How many liters of laundry detergent in all are in the closet?
Each bottle in the case is 3 litres in capacity, we found the total number of bottles to be 60, hence the number of litres is 180 litres
Capacity of ItemsGiven Data
Number of Cases of Detergent = 5Number of Bottles on the closet = 5*12 = 60 bottlesRequired : the total litres
If each bottle is 3 litres in capacity and we have 60 bottles
Then the total amount in litres is
= 60*3
= 180 litres
Learn more about capacity of items here
https://brainly.com/question/21036176
The roof of a tower in a castle is shaped like a cone. The height of the roof is 30 ft, and the radius of the base is 15 ft. What is the surface area of the roof?
Answer:
area=2πr
= 22/7*15
= 47.142
Help picture below problem 15
Answer:
Supplementary
Step-by-step explanation:
The two angles are completely different from each other and if you combine them together it'll form a straight line making it 180 degrees
Westford Lake was originally blue because it only had 810 algae plants. Then towns and farms cropped up by the lake. This caused 9,772 more algae plants to grow, which turned the lake green. How many algae plants are now in Westford Lake?
Answer:
10,582 algae plants
Step-by-step explanation:
10,582 algae plants. You have to add 810 and 9,772 to get 10,582 algae plants.
Help help ASAP math math
Answer:
-9
Step-by-step explanation:
225 ÷ -25 = -9
Which of the following expressions is equivalent to……
Answer:
Box 4
Step-by-step explanation:
negative divided by negative is positive so both negatives cancel out and u get (5/6) / (1/3)
A park has a rectangular shape. One side of the park is 175 23 meters long and the
other is 67.5 wide. Find the area of the park. (Round to the nearest hundredth if
necessary)
Answer:
Step-by-step explanation:
The area of a rectangle is length x width.
Given:
length = 175.23m
width = 67.5m
Area = 175.23m x 67.5m = 11828.025[tex]m^{2}[/tex]
If log_10(x) = 3 + log_10(y), then find x/y
Answer:
1000Step-by-step explanation:
[tex]log_{10}x = 3 + log_{10}y[/tex][tex]log_{10}x - log_{10}y = 3[/tex][tex]log_{10}(x/y) = 3[/tex][tex]x/y = 10^3[/tex][tex]x/y = 1000[/tex]Answer:
x/y = 10^3 = 1000
Step-by-step explanation:
The rules of logarithms tell you ...
log(x/y) = log(x) -log(y)
__
Here, we have ...
log(x/y) = log(x) -log(y)
= (3 +log(y)) -log(y) = 3 . . . . . . . . substittute for log(x)
Taking the antilog, we get ...
log(x/y) = 3
x/y = 10^3 = 1000
_____
Additional comment
The expression log(x) is often used to refer to the "common log" of x, which is the logarithm to the base 10. This lets us avoid the cumbersome notation log_10(x).
In more formal mathematics, log(x) may be used to refer to the natural log. The distinction is usually made in high school algebra by referring to the natural log using ln(x).
Which CANNOT be the third side of a triangle if the two sides measure 10 cm and 32 cm ?
A.
32 cm
B.
33 cm
C.
44 cm
D.
40 cm
[tex]\qquad\qquad\huge\underline{\boxed{\sf Answer☂}}[/tex]
The Length of the third side of a triangle shouldn't be greater than the some of other two sides,
So, let the side be x
[tex]\qquad \sf \dashrightarrow \: x < 32 + 10[/tex]
[tex]\qquad \sf \dashrightarrow \: x < 42[/tex]
And hence, the third side should be less than 42 cm, therefore the only option that doesn't satisfy the condition is option D
Therefore, 44 cm can't be a side of that Triangle.
the sum of three consecutive natural numbers is 1146, find the numbers.
the three numbers in increasing order are ______ , _____, and ________
[tex]\text{Let the 3 consecutive numbers be}~ x,~x+1~ \text{and} ~x+2.\\\\\text{According to the condition,}\\\\x+x+1+x+2 = 1146\\\\\implies 3x +3 = 1146\\\\\implies 3(x+1) = 1146\\\\\implies x+1 = \dfrac{1146}3 = 382\\\\\implies x= 382-1 = 381\\\\\text{Now, the numbers are}~ 381,~382~\text{and}~383[/tex]
You can run at a speed of 6 mph and swim at a speed of 3 mph and are located on the shore, 5 miles east of an island that is 1 mile north of the shoreline. How far (in mi) should you run west to minimize the time needed to reach the island
Answer:
I think I should run 5miles
kassim has a money box containing 100 mixed sh 5 and sh 10 coins with a total value of sh 600. How many of each type of coin does the box contain
Answer
90
Step-by-step explanation
600 divided by 100
600 / 100 (5+10)
Adam is purchasing a new television that costs $2,187.96 after tax. He borrowed the money from his parents and must pay back the full amount plus simple interest at the rate of 3.5%. What is the interest he will pay if he takes 2 years to pay his parents back? (Include Decimal with the cents; No Commas)
Using simple interest, considering the parameters stated in the exercise, it is found that he will pay an interest of $153.16.
Simple InterestSimple interest is used when there is a single compounding per time period.
The amount of interest after t years in is modeled by:
I = Prt
In which:
P is the initial amount.r is the interest rate, as a decimal.In this problem, the parameters are given as follows:
P = 2187.96, r = 0.035, t = 2.
Hence, the interest paid will be of:
I = Prt = 2187.96 x 0.035 x 2 = $153.16.
More can be learned about simple interest at https://brainly.com/question/25296782
Pls, Help !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Determine the value of x if the mode is 18
What is the range of possible sizes for side x?
[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]
The value of third side should be lesser than the the sum of other two sides ~
[tex]\qquad \sf \dashrightarrow \:x < 2.8 + 2.8[/tex]
[tex]\qquad \sf \dashrightarrow \:x < 5.6[/tex]
and, value of third side should also be greater than the difference of other two sides ~
[tex]\qquad \sf \dashrightarrow \: x> 2.8 - 2.8[/tex]
[tex]\qquad \sf \dashrightarrow \:x > 0[/tex]
Now, combine the two inequalities, we will get ~
[tex]\qquad \sf \dashrightarrow \:0 < x < 5.6[/tex]
I hope you got the required Answer ~
Which equation represents an exponential function with an initial value of 500? f(x) = 100(5)x f(x) = 100(x)5 f(x) = 500(2)x f(x) = 500(x)2h equatWhich equation represents an exponential function with an initial value of 500? f(x) = 100(5)x f(x) = 100(x)5 f(x) = 500(2)x f(x) = 500(x)2ion represents an exponential function with an initial value of 500? f(x) = 100(5)x f(x) = 100(x)5 f(x) = 500(2)x f(x) = 500(x)2
Answer:
(c) f(x) = 500(5^x)
Step-by-step explanation:
An exponential function is one that has the independent variable (x) in the exponent. The initial value of an exponential function (or any function) is the value when x=0.
__
Examine the ChoicesYou are looking for a function with x in the exponent, and with an initial value of 500. Eliminate answer choices that don't have x in the exponent. Evaluate the remaining choices for x=0 and see which gives you a value of 500.
f(x) = 100(5)^x ⇒ f(0) = 100·1 = 100 ≠ 500
f(x) = 100(x^5) . . . not an exponential function
f(x) = 500(5)^x ⇒ f(0) = 500·1 = 500 . . . . . the function you're seeking
f(x) = 500(x^2) . . . not an exponential function
Answer:
a
Step-by-step explanation: