If a circle has an area of 84π units then what is the measure of its
radius in exact units?
a. 2√21 units
b. √ 54 units
C 10.4 units
d. 108 units
Answer quickly please
Answers
a. 2√21 units
Step-by-step explanation:Hi there !
Area formula
A = π·r²
replace A84π = πr²
r² = 84π/π
r² = 84
r² = 2²×3×7
r = √2²×3×7
r = 2√3×7
r = 2√21
Good luck !
Related Questions
what is 5 OVER 3 divided by 7 pls help me
Answers
Answer:
0.23809523809 hope that helps
5/3/7 the decimal is 0.238
Suppose you deposit 1000 $ in a savings account that pays interest at an annual rate of 4%. If no money is added or withdrawn from the account, answer the following questions.
How much will be in the account after 3 years?
b. How much will be in the account after 16 years?
c. How many years will it take for the account to contain 1,500 $?
d. How many years will it take for the account to contain 2000$?
Some one please helppppppp mee
Answers
Answer:
a. 1124.86
b. 1872.98
c. 10.35
d. 17.7
Step-by-step explanation:
use the formula A(t) = a (1+r)^t
How to Multiply this equation -3(-6r+6)
Answers
Answer:
18r - 18
Step-by-step explanation:
-3(-6r+6)
Multiply -3 by -6r = 18r *Negative times a negative equals a positive.
Secondly, multiply -3 times 6 = -18
Combine and check your work.
18r - 18
Leo invested $1900 in an account with annually compounded interest. After 3 years, he had $2275 in the account. What was the interest rate of the account? Round your answer to one decimal place. Do not write the percent sign.
Answers
Answer:
6.2%
Step-by-step explanation:
got the wrong answer and this was the right one omm
What number meets the following characteristics, is rational, less than 0, greater than negative 4, and is not an integer NEED ANSWER FAST
Answers
Answer: - 3/4
Step-by-step explanation:
It fits
So let's narrow it down.
Less than 0, greater than -4
That gives us three whole numbers, -3, -2, and -1.
So that does not really narrow it down, because all of those aren't integers and are rational.
Any other information?
{10, 12, 14, 16, 18, ...} What is the formula ?
Answers
Answer:
10 + 2x
Step-by-step explanation:
we you started with 10 and you're adding 2 everytime
x = the number of times you do this
10 + 2x
Answer:
2n + 8
=> 10, 12 , 14, 16, 18, 20, 22, 24, ...
Andrew has 20 more goldfish than Todd .together they have 80 goldfish how many goldfish does each boy have
Answers
Answer:
Andrew 50
todd 30
Step-by-step explanation:
Which is greater 728.307 or 729.07
Answers
Answer:
729.07
Step-by-step explanation:
Answer:
729.07 is the greater number between the two.
Step-by-step explanation:
Write an expression having only two terms that is equivalent to 2x – 3. Explain how you wrote the expression and how you can check that it is equivalent. QUICKLY!
WILL GIVE BRAINLIST
Answers
Answer:
4x-6
Step-by-step explanation:
Two times 2 equals 4 and 2 times 3 equals 6
Hope this helps !!
ic
Solve the inequality 2x + 8 < 5x - 4.
Ox>4
Ox> 1
Ox<1
Ox<4
HELP ASAP
Answers
Answer:
2x + 8 < 5x - 4.
Step-by-step explanation:
it equals
x>4
f (x) = -4x + 4
f(2)=
Answers
Substitute x = 2 as we get
f(2) = -4(2)+4 = -8+4 = -4
Therefore, f(2) = -4
help find the equation of the tangent line please (calculus)
Answers
The tangent line to f(x) at x = c has slope equal to the derivative at c, or f'(c).
We have
f(x) = 3 - 2 x + 7 x²
so that
f'(x) = -2 + 14 x
The slope is 5 for
-2 + 14 x = 5 ==> 14 x = 7 ==> x = 1/2
Now, f (1/2) = 15/4, so the tangent line has equation
y - 15/4 = 5 (x - 1/2) ==> y = 5 x + 5/4
write the equation in slope intercept form
(-2,6) with a slope of -1/4
Answers
12) 36 gallons is equal to how many quarts? 4 qt=1 gallon*
Answers
Answer:
144
Step-by-step explanation:
36 x 4
Answer:
144
Step-by-step explanation:
1 gallon 4
36 gallon 4*36 =144
0
87
B
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93
с
S
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0
11
o
79
CLEAR ALL
Given that:
AB CD
mZLRB = (7x + 10)
mZRSC = +(81+5)
Find mZARL in degrees
Answers
Answer:
i need points
Step-by-step explanation:
plz thanks
find X in the ratio 1:3 = 9:x
Answers
Answer:
27
Step-by-step explanation:
9*3=27
since it's always 3 times the amount of the left side we would just multiply 9 by 3
The required value of x would be 27 in the given ratio 1:3 = 9:x.
What is Ratio?The ratio is defined as a relationship between two quantities, it is expressed as one divided by the other.
The ratio is given in the question as follows:
1:3 = 9:x
We have to determine the value of x in the given ratio.
As per the question, we have
1:3 = 9:x
⇒ 1/3 = 9/x
Apply the cross-multiplication,
⇒ x = (3) × (9)
Apply the multiplication operation, and we get
⇒ x = 27
Therefore, the required value of x would be 27.
Learn more about the Ratio here:
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3. Julio's dad bought 10 dozen potatoes. The potatoes were equally
divided into 6 bags. How many potatoes are in each bag?
Answers
Answer:
20 potatoes in each bag
Step-by-step explanation:
10 x 12 = 120
120 / 6 = 20
1/7 x g = 1
what's g
Answers
=
7
x
That’s the answer
Answer:
or,1/7divide by 1 =g
or, 1and 1 cut remember 7 =g
therefore value of g is 7.
Step-by-step explanation:
.
Greg ran 12 miles a day on 18 different days last month. How many miles did he run?
Answers
Answer: 216
Step-by-step explanation:
12 x 18 = 216
Which pair of angles must be supplementary
1 and 5
5 and 3
4 and 5
4 and 1
Answers
The supplementary angle pairs are: angles 4 and 5
What are supplementary angles?Two angles whose sum is 180° are called supplementary angles. If a straight line is intersected by a line, then there are two angles form on each of the sides of the considered straight line. Those two-two angles are two pairs of supplementary angles. Which means, if supplementary angles are aligned adjacent to each other, their exterior sides will make a straight line.
We know that Two Angles are Supplementary when they add up to 180 degrees.
In the given diagram , the pair of angles must be supplementary that are:
angles 1 and 8
angles 2 and 7
angles 4 and 5
angles 3 and 4
angles 1 and 2
angles 7 and 8
angles 3 and 6
angles 5 and 6
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Help me solve this problem
0.0002 x 0.004
Answers
Answer:
0.00000008
So this is the answer.
Two functions are defined as shown.
f(x) = f(x) equals negative StartFraction 1 Over 2 EndFraction x minus 2. x – 2
g(x) = –1
Which graph shows the input value for which f(x) = g(x)?
A coordinate grid with two lines. One line labeled f(x) passes through (negative 2, 3), (0, 1), and point (2, negative 1). The second line is labeled g(x) and passes through (negative 3, negative 1), (0, negative 1), and point (3, negative 1).
A coordinate grid with two lines. One line labeled f(x) passes through (negative 4, 0), point (negative 2, 0), and (0, negative 2). The second line is labeled g(x) and passes through (negative 3, negative 1), (0, negative 1), and point (3, negative 1).
A coordinate grid with two lines. One line labeled f(x) passes through (negative 4, 1), (negative 2, 0), and point (1.5, negative 1). The second line is labeled g(x) and passes through (negative 3, negative 1), (0, negative 1), and point (1.5, negative 1).
Answers
Answer:
its graph two trust also pls brainiest
Step-by-step explanation:
Answer:
Graph 2
Step-by-step explanation:
The principal roots of
a number are
Answers
Answer:
Step-bvery nonnegative real number x has a unique nonnegative square root, called the principal square root, which is denoted by √x, where the symbol √ is called the radical sign or radix. For example, the principal square root of 9 is 3, which is denoted by √9 = 3, because 32 = 3 ⋅ 3 = 9 and 3 is nonnegative.y-step explanation:
The cost for decorations and the disc jockey for the senior class dance was $500. The class members sold 325 tickets and made a profit of $2,750. If x represents the price of each ticket sold, which equation could be used to find x?
Answers
Answer: Yes
Step-by-step explanation: Because of the gravity of the earth
Billy saw 6 tigers and 9 lions at the zoo. What is the ratio of tigers to lions that Billy saw, and what is the
significance of this ratio?
A. 1:3, because the cats Billy saw were in groups of threes
B. 2:3, because Billy saw two-thirds as many tigers as lions
C. 2:3, because two-thirds of the cats Billy saw were tigers
D. 1:3, because Billy saw 3 fewer tigers than lions at the zoo
Answers
Answer:
D
Step-by-step explanation:
The correct ratio is 1;3 so that eliminates B and C. The problem doesn't state anything about Billy seeing groups of tigers so D is the only logical answer.
Ok now what do I press?
Answers
Answer:
Notification
Step-by-step explanation:
K = -1, f(x) = x -3x+2
I am a bit confused the question says: use the remainder theorem and synthetic division to find f(k).
Answers
Answer:
f(k) = 6
Step-by-step explanation:
See attachment:
75 is what percent of 15
Answers
Answer:
500%
Step-by-step explanation:
Is means equals and of means multiply
75 = P * 15
Divide each side by 15
75/15 = P
5 = P
Change to percent form
500%
The foundation of your house has about 1,200 termites. The termites grow at a rate of about 2.4% per day. How long until the number of termites doubles?
Answers
Answer:
2=1.0247 The termite population doubles in ñ 29.226 days.
Step-by-step explanation:
20/3 = ?/6 what is the answer to the question mark
Answers
Answer:
40. 3*2 is equal to 6 so 20*2 equals 40
The value of the missing number in the equation is 40.
What is the value of the missing number?Given the equation in the question:
20/3 = ?/6
Let x represent the missing number:
Hence:
20/3 = x/6
To solve for x, we cross-multiply and simplify:
20/3 = x/6
Cross multiplying, we get:
3 × x = 20 × 6
Multiply 3 and x:
3x = 20 × 6
Multiply 20 and 6:
3x = 120
Divide both sides by 3:
x = 120/3
x = 40
Therefore, the value of x is 40.
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