You would use this formula for the problem...
(C=2πr) The circumference equals 2 multiplied by pi and radius.
In this problem it says diameter, but the diameter is just twice the length of the radius, so just multiply the radius by 2. Plugin your number.
C=2π(2) since 2 is half of 4, that's your radius.
Your answer is roughly C= 12.57.
You're welcome.
15.
Find the slope of the line.
A. -3/4
B. 3/4
C. 4/3
D. -4/3
Answer:
C. 4/3
Step-by-step explanation:
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the mean, median and interquartile range
Solve using substitution
–3x + y = –12
5x − 2y = 17
PLZ HELP Will give brainlist to whoever answers first
Answer:
x=7, y=9. (7, 9).
Step-by-step explanation:
-3x+y=-12
5x-2y=17
---------------
y=-12-(-3x)
y=-12+3x
y=3x-12
5x-2(3x-12)=17
5x-6x+24=17
-x+24=17
-x=17-24
-x=-7
x=7
y=3(7)-12
y=21-12
y=9
Plz help will give brainliest!
Answer:
#162°+ m∠1 + m∠2 = 180° (straight angle)m∠1 + m∠2 = 118°2x + 8 + 3x = 1185x = 110x = 22m∠1 = 2*22 + 8 = 52°m∠2 = 3*22 = 66°Correct choice is B#2Side of the square:
a = 2*12 = 24 ftArea of the square:
A = a² = 24² = 576 ft²Radius of each circle:
r = 12/2 = 6 ftArea of each circle:
A = πr² = 3.14*6² = 113.04 ft²Area of all circles:
113.04*4 = 452.16 ft²Area of shaded region:
576 - 452.16 = 123.84 ft²Correct choice is BIf r and s are positive real numbers, which expression is equivalent to
,2/3,1/2
2
ОА. 32
B. 1/3,12
OC. 23,112
OD. 23,12
O E U
1/35112
Answer:
The answer is E
I got it right
Step-by-step explanation:
The answer is A because the reverse of 6.75 is negative 6.75.
Answer:
The is A as you say lol i don't know
What are the coordinates of the point halfway between (- 1, 4) and (5, 4)
Answer:
(2,4)
Step-by-step explanation:
whats 8 over x-2 =24 over 7 in solving proportions NO LINKS
Answer:
[tex]x=\frac{1}{3}[/tex]
Step-by-step explanation:
[tex]\frac{8}{x-2} =\frac{24}{7}[/tex]
[tex]x=\frac{1}{3}[/tex]
What is this? 10 points !
Answer:
x= 114
Step-by-step explanation:
correspnding angles are equal.
I hope im right! :)
Which equation, when graphed would appear narrower than the graph of y= 3x2 + 5
Answer:
y = 4x^2 + 5 has the narrowest graph.
Step-by-step explanation:
The larger the coefficient of x^2 is, the narrower the graph will be. Thus:
y = 4x^2 + 5 has the narrowest graph.
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Answer:
15. 1/3 (33%)
16. 1/6 (16.66%)
17. 1/2 (50%)
18. 1/2 (50%)
19. 1/1 (100%)
20. 0/1 (0%)
Step-by-step explanation:
What is the percent change if the starting value is 25 and the final value is 30?
Answer:
The percentage change from 25 to 30 is 20 %
Step-by-step explanation:
((30 - 25) / 25) * 100 = 20 %
Line KJ represents a proportional relationship. Point K lies at (12,14) as shown on the graph below.
Which ordered pair could represent the coordinates of point J?
Given:
Line KJ represents a proportional relationship.
Point K lies at (12,14).
To find:
The ordered pair of the coordinates of point J.
Solution:
If y is proportional to x, then
[tex]y\propto x[/tex]
[tex]y=kx[/tex]
[tex]\dfrac{y}{x}=k[/tex]
Where, k is the constant of proportionality.
It means, the ratios of y to x for all the point in a proportional relationship are same.
Line KJ represents a proportional relationship. Point K lies at (12,14).
So, the constant of proportionality is:
[tex]k=\dfrac{14}{12}[/tex]
[tex]k=\dfrac{7}{6}[/tex]
Similarly, find the ratio of y to x for all given points.
In option a,
[tex]\dfrac{3.5}{3}=\dfrac{3.5\times 2}{3\times 2}[/tex]
[tex]\dfrac{3.5}{3}=\dfrac{7}{6}[/tex]
In option b,
[tex]\dfrac{15}{17.5}=\dfrac{15\times 2}{17.5\times 2}[/tex]
[tex]\dfrac{15}{17.5}=\dfrac{30}{35}[/tex]
[tex]\dfrac{15}{17.5}=\dfrac{6}{7}[/tex]
In option c,
[tex]\dfrac{0}{2}=0[/tex]
In option d,
[tex]\dfrac{3}{3.5}=\dfrac{3\times 2}{3.5\times 2}[/tex]
[tex]\dfrac{3}{3.5}=\dfrac{6}{7}[/tex]
The ratio of y to x of point (3,3.5) is equal to the ratio of given point K(12,14). So, the coordinates of point J are (3,3.5).
Therefore, the correct option is A.
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Answer:
C x = 119
Step-by-step explanation:
> greater than
< less than
119 > 111
A rectangle has a perimeter of 72 millimeters and a width of 8 millimeters. What is the length of this rectangle?
Answer:
28
Step-by-step explanation:
Since the perimeter is the width + width + length + length, we know that there 2 of the 8 millimeter width in the perimeter. So multiply 8 by 2, which is 16. So 16 of the 72 represents both widths. So subtract 16 from 72. You're left with 56, which represents 2 of the length. So divide 56 by 2, and you get one of the length, which is 28.
Answer:
28 ^^
Step-by-step explanation:
Good Luck!!!
Simplify the square root of (x^2 -6x+ 9) if x<-3
Answer:
x^2 - 9
Step-by-step explanation:
The square root of the quadratic equation [tex](x^2 -6x+ 9)[/tex] if x<-3 would be equal to (x-3).
What is a quadratic equation?A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
The given quadratic equation is
[tex](x^2 -6x+ 9)[/tex]
We have to find the square root of the quadratic equation
[tex]\sqrt{(x^2 -6x+ 9)} \\\\\sqrt{(x^2 -3x-3x+ 9)} \\\\\sqrt{x(x-3)-3 (x-3)} \\\\\sqrt{(x-3) (x-3)} \\\\\sqrt{(x-3)^2} \\\\(x-3)[/tex]
Thus, the square root of the quadratic equation [tex](x^2 -6x+ 9)[/tex] if x<-3 would be equal to (x-3).
Learn more about quadratic equations;
brainly.com/question/13197897
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Convert the following degrees into radians: 45°
Answer:
π/4
Step-by-step explanation:
45 * π/180 = π/4 radians.
Solve for x.
5 yd
3 yd
w
X
Show Your Work HELPPPP PLZ
Answer:
4yards
Step-by-step explanation:
[tex] \rm \mapsto \: {5}^{2} = {3}^{2} + {x}^{2} \\ \rm \mapsto \: 25 = 9 + {x}^{2} \\ \rm \mapsto \: {x}^{2} = 25 - 9 \\ \rm \mapsto \: {x}^{2} = 16 \\ \rm \mapsto \: x = \sqrt{16} \\ \rm \mapsto \: x = 4yards[/tex]
A bagel shop sold 8 plain bagels and 13 rye bagels. What is the ratio of the number of rye bagels to the number of plain bagels sold?
Answer:
B
Step-by-step explanation:
since rye bagels come first after plain bagels, rye bagel is 13 & plain bagel is 8 so 13:8 is the answer!
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What is the inverse of f(x)=3x^2
Answer:
f^-1 (x)=sqrt(x/3), -sqrt(x/3).
Step-by-step explanation:
f(x)=3x^2
y=3x^2
x=3y^2
y^2=x/3
y=sqrt(x/3), -sqrt(x/3).
Answer:
[tex]y=3x^2[/tex]
[tex]y=3x^2[/tex]
Step-by-step explanation:
There is no step-by-step explanation because it's a graph. Well, it's how I did it. Therefore, the graph in the picture that I'm about to post will be your answer.
What is the perimeter of the rectangle?
Answer:
10 feet
Step-by-step explanation:
Perimeter of rectangle = 2l+2b
Area of the rectangle = l x b
Area of the rectangle = 4 square feet
possible factors of 4 = 2x2/4x1
So sides of the rectangle are 4 & 1 as 2&2 would make it a square
So perimeter= 2x4+2x1
= 8+2
= 10 feet
Amanda has $227 worth of bills in her purse. She has six more $5 bills than $10 bills. The number of $1 bills is three fewer than 25 times the number of $10 bills. How many bills of each kind does Amanda have?
Answer:
There are six $5 bills and nine $10 bills
Step-by-step explanation:
x= $5 bills
y= $10 bills
x+y=15
5x+10y=120
5x+10(15-x)=120
5x+150-10x=120
-5x= -30
x=6 so y=9
Answer:
$10 = 5 $5 = 11 $1 = 122
Step-by-step explanation:
5 x 10 = 50
5 x 11 = 55
1 x 122 = 122
50 + 55 + 122 =
227
Hope this helps!
Olivia works at a company that creates mobile phones. She wanted to estimate the mean amount of time their new phone's battery lasts with regular use after a full charge. She took a random sample of 6 of these phones and randomly assigned each of them to a volunteer. She instructed them to fully charge the phones and use them as they regularly would until the battery died (without recharging the phone). Here are the data they reported:
Assume that all conditions for inference are met.
Which of the following is a 90% confidence interval for the mean battery life (in hours)?
Answer:
9+- 1.7
Step-by-step explanation:
Kahn
The required possible 90% confidence interval for the mean battery life is (10.95, 19.05) hours.
What is Statistic?Statistic is the study of mathematics that deals with relations between comprehensive data.
Here,
Assuming that the sample means and sample standard deviation were calculated from the data, a possible 90% confidence interval for the population means battery life can be calculated using the t-distribution.
For example, if the sample mean is 15 hours and the sample standard deviation is 3 hours, with a sample size of 6 and a 90% confidence level, the t-interval would be:
t-interval = sample mean ± t*(sample standard deviation / √(sample size))
where t is the t-value with (sample size - 1) degrees of freedom and a 90% confidence level.
Using a t-table, the t-value for 5 degrees of freedom and a 90% confidence level is approximately 2.571. Plugging in the values, we get:
t-interval = 15 ± 2.571*(3 / √(6))
t-interval ≈ (10.95, 19.05)
Therefore, a possible 90% confidence interval for the mean battery life is (10.95, 19.05) hours.
Learn more about Statistics here: https://brainly.com/question/23091366
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There is a triangle with sides measuring 30in, 30in and 25in. Is this a right triangle? Why or why not?
Answer:
No. In order to be a right triangle, the lengths of the 2 smaller sides must equal the length of the longest side.
In other words, these 3 sides must work with the Pythagorean theorem.
A^2 + B^2 = C^2
25^2 + 30^2 is NOT 30^2
This is a triangle, just not a right triangle.
Find the area of a circle with a diameter of 8 cm. Use 3.24 for n. Round your answer to the nearest hundredth
Answer:
half of 8 is 4
so 4 is your radius
4^4 = 16
16 x 3.14 = 50.24 in2 is your area.
Which of the following could be true if y ≤ -75?
y = 75
y = -74
y > -75
y = -75
Answer:-74
Step-by-step explanation: When you are in the megatives, less is more! So -74 is actually greater then -75
Helpppppp can’t find the right answer pls help
Answer:
$500
Step-by-step explanation: