A square has an area of 81 square inches. What is its perimeter?
Area of square = [tex]s^2[/tex] where, [tex]s[/tex] is the side length of the square.
[tex]81=s^2[/tex]
[tex]9=s[/tex]
s must be positive since it is a side length, so the negative root of 81 is rejected.
Perimeter= [tex]4s[/tex]
Perimeter= [tex]4(9)=36inches[/tex]
Step-by-step explanation:
In order to find the perimeter we need to find the length first ...
...Here, the area is already given ...
Area = 81 inches square
length = ?
Now....
( The formula of area is l × l )
[tex]area = {l}^{2} [/tex]
[tex]81 = {l}^{2} [/tex]
Now we should find square root of 81...
[tex]l = \sqrt{81} [/tex]
[tex]l \: = 9[/tex]
Now we find length so it's easy for us to find perimeter...
The formula of perimeter of square is 4l ..
= 4l
= 4 × 9
= 36 inches
hence the answer is 36 inches....
Sin(15) × cos(15) × cos(30)
Answer:
0.2165 to the nearest ten thousandth.
Step-by-step explanation:
Sin(15) × cos(15) × cos(30)
= 0.258819 * 0.965926 * 0.866025
= 0.216506
Find the remainder when f(x) = 5x² + 4x² - 2x + 4 is divided by x + 1.
Answer:
I hope this helps you........
I need help finding the slope and what m =
Answer:
4/3
Step-by-step explanation:
slope = rise/run = (y1-y2)/(x1-x2) = 4 / 3
650 times what decimal gives me 3185?
Answer:
The decimal is 4.9
What is the volume (in cubic units) of a cylinder with a radius of 5 units and a height of 8 units? Assume that π = 3.14 and round your answer to the nearest tenth when necessary.
Answer:
V = hpir^2 = 12(3.14)(3)^2 = 108(3.14) = 339.1
Step-by-step explanation:
Find the Surface Area:
A) 200 in^2
B) 300 in^2
C) 500 in^2
D) 400 in^2
Answer: B
Step-by-step explanation:
which graph represent the liner function y= -5x + 2?
A
B
C
D
Answer:
A
Step-by-step explanation:
if you say x=0 than y=2
if you say y=0 then x=2/5
you observe those values in the first graph
Which statement is true
Answer:
the answer is only 5
Step-by-step explanation:
a trapezoid has a perimeter of 14ft what will the perimeter be if each side length id increased by a factor of 7
Answer:
42
Step-by-step explanation:
Trapezoid has 4 lines
If each side increase by 7, 4 lines totally increase by 7*4 = 28
Perimeter will be 14 + 28 = 42
What is 8,-6 over the x-axis 90 degrees
Answer:
(6,8)
Step-by-step explanation:
The rule for 90 degree rotation is (x,y)=(-y,x)
So the answer is (6,8)
Estimate 21.2 - 4.8 to the nearest whole number. please hurry
Answer:
16
Step-by-step explanation:
Multiply using an area model: (3x+2)(2x-4)
if A (4,5), B (6,8), then vec AB is ...
Answer:
slope= rise/ run= 1.5/1= 1.5
Simplify the expression (2x − 9)(x 6). a. 2x2 − 54 b. 2x2 − 3x − 54 c. 2x2 3x − 54 d. 2x2 21x − 54
The means of simplifiying is by factoring. The simplified form of the expression is 2x² + 3x - 5
Simplifying expressionsThe means of simplifiying is by factoring
Given the expression
(2x - 9) (x+ 6)
Expand
(2x - 9) (x+ 6)
2x² +12x -9x - 54
2x² + 3x - 54
Hence the simplified form of the expression is 2x² + 3x - 54
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Answer: It's
c
Step-by-step explanation:
If a slice of pizza is 2 dollars and I have 15 dollars how many pieces of pizza can I get
Find the slope of the line passing through the points (-2, 7) and (-7, 3)
Answer:
m = 4/5 or m = 0.8
Step-by-step explanation:
hope it helps
Find the value of x in the parallelogram below.
Answer:
x = 25
y = 6
Step-by-step explanation:
In a parallelogram, opposite angles are equal.
2x and 50 are opposite angles,
2x = 50
Divide 2 on both sides,
x = 50 / 2
x = 25
In a parallelogram opposite sides are equal.
y + 5 and 11 are opposite sides,
y + 5 = 11
y = 11 - 5
y = 6
Answer:
x=25
y=6
Step-by-step explanation:
from the diagram,
2x= 50(opposite angles of a parallelogram)
2x= 50
dividing bothsides by 2
2x/2=50/2
x= 25
then,
y+5=11(opposite sides of a parallelogram)
y= 11-5
y= 6
What is the measure of each angle of a regular 13-gon if necessary round to the nearest tenth
[tex]\textit{sum of all interior angles in a regular polygon}\\\\ \theta n=180(n-2) ~~ \begin{cases} \theta =\stackrel{degrees}{angle}\\ n=\stackrel{side's}{number}\\[-0.5em] \hrulefill\\ n=13 \end{cases}\implies \theta (13)=180(13-2) \\\\\\ 13\theta =180(11)\implies 13\theta =1980\implies \theta =\cfrac{1980}{13}\implies \theta \approx 152.3^o[/tex]
What is the approximate Volume of the cone below?
Answer:
B - 183 cm3
Step-by-step explanation:
volume of a cone is 1/3 x pi x r^2 x H
Answer:Your answer is going to be D
Step-by-step explanation:
1/3 x 3.14 x 10^2 x 7 =732.66
What is the slope of the line shown below?
A. -1/3
B. 1/3
C. 3
D. -3
Answer:
C. 3
Step-by-step explanation:
Using the slope formula
Answer:
C. 3
Step-by-step explanation:
8 - 2/ 4 - 2 = 6/2 = 3
...................................................
How many possible outcomes exist when four fair coins are flipped? 2 4 8 16
Answer:
16
Step-by-step explanation:
50-50 chance for each
2x2x2x2=16
Interest is compounded semianually. Find the amount in the account after the given time.
Answer:
$1,159.69
Step-by-step explanation:
Compound Interest Formula :
A = P (1 + r/n)^(nt)A = amount P = principalr = rate (in decimals)n = number of times compoundedt = number of yearsSolving :
A = (1,000)(1 + 0.05/2)²⁽³⁾A = (1,000)(1.025)⁶A = (1,000)(1.15969342)A = $1,159.69Question 1 of 42
Which of the following is the domain and range that represents the function
F(x), given the mapping diagram of the inverse of F(x) below?
2
NO 00
4
3
2
1
6
8
2-
No00
هم نه ليا ده
6
2.
3
4.
8
O A.
2.
4
3
2
1
NW
6
8
B.
The option A is showing the domain ans the range of the function F(x) as inverse of F(x).
What is inverse function?In mathematics, the inverse function of a function f (also called the inverse of f) is a function that undoes the operation of f. The inverse of f exists if and only if f is bijective, and if it exists, is denoted by [tex]{\displaystyle f^{-1}.}[/tex]
Here in the graph we can see that the option A has the clear range of the function.
[tex]2------- > 1\\4------- > 2\\6------- > 3\\8------- > 4[/tex]
Hence the option A is showing the domain ans the range of the function F(x) as inverse of F(x).
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What should frankie consider before buying the car? check all that apply. what he will be giving up if he spends $800 on the car the cost to maintain (oil, tires, gas, brakes) and insure the car how many of his friends have cars his short- and long-term financial goals if an alternate mode of transportation, such as a bicycle or the bus, is sufficient for his needs
Frankie should consider these factors before buying the car including the following:
What are the factors to consider before buying a car?In addition to quality, cost of ownership, payment impact, and reliability, Frankie should consider these factors before buying the car:
b. the cost to maintain (oil, tires, gas, brakes) and insure the car.
d. his short- and long-term financial goals.
e. if an alternate mode of transportation, such as a bicycle or the bus, is sufficient for his needs.
Thus, the most important factors that Frankie should consider before buying the car are listed above.
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Answer:
A, B, D, E
Step-by-step explanation:
-what he will be giving up if he spends $800 on the car
-the cost to maintain (oil, tires, gas, brakes) and insure the car
-his short- and long-term financial goals
-if an alternate mode of transportation, such as a bicycle or the bus, is sufficient for his needs
What is an equation of the line that passes through the point (−2,−3) and is parallel to the line 4x−y=1?
_x 11 = 99 what is the missing number?
Answer:
9 x 11 = 99
Step-by-step explanation:
if the number 11 is being multiplied by is under 10 its just that number twice.
11x1 = 11
11x2 = 22
11x3 = 33
ya know?
Find the product of (x + 7)(x - 7).
x2 - 14x + 49
x2 - 49
x2 + 14x + 49
x2 + 49
Answer:
x² - 49
Step-by-step explanation:
Identity: (a + b)(a - b) = a² - b²Here a = x and b = 7
(x +7) (a -7) = x² - 7²
= x² - 49
Answer:[tex]x^{2} -49[/tex]
Step-by-step explanation:
I NEED HELP!!!!
[tex]3(7+7i)+i(7+7i)[/tex]
Thanks!:)
Solve the equation:-
[tex]3(7 + 7i) + i(7 + 7i) \\take \: common \: (7 + 7i) \: out\\ (7 + 7i) (3 + i) \: is \: your \: answer [/tex]
Open the equation:-
[tex]3(7 + 7i) + i(7 + 7i) \\ 21 + 21i + 7i + 7 {i}^{2} \\ 7 {i}^{2} + 28i + 21 \: \: answer[/tex]
18) Find the sum of the odd integers between 104 and 60.
Answer:
1,804
Step-by-step explanation:
106 - 60 = 44
44/2 = 22
60 + 22 = 82
82*22 = 1,804