Answer:
-1/2
Step-by-step explanation:
cos (4π/3)= cos (π+π/3)
Answer:
Step-by-step explanation:
[tex]cos (\frac{4 \pi }{3} )=cos (\pi +\frac{\pi }{3} )=-cos (\frac{\pi }{3} )=-\frac{1}{2}[/tex]
Question 3
~ True or false?
Answer:
It is true
Step-by-step explanation:
20/-7 is ~2.56
-2.8 (8 repeating) is -2.8......
So it is true
Hope this helps!
Answer:
True
Step-by-step explanation:
I NEED HELP ASAP, WILL MARK BRAINLIEST Find the value of y. Round to the nearest tenths place.
Answer:
Side a = 1
Side b = 0.5
Side c = 0.86603 = √3/2
Nearest tenths is 0.9
Step-by-step explanation:
The following is one way to perform the calculation. It may not be the best way.
Calculates 2 sides based on 3 given angles and 1 side.
b = a·sin(B)/sin(A) = 0.5
c = a·sin(C)/sin(A) = 0.86603 = √3/2
Area =
ab·sin(C)
2
= 0.21651
Perimeter p = a + b + c = 2.36603
Semiperimeter s =
a + b +c
2
= 1.18301
Height ha =
2×Area
a
= 0.43301
Height hb =
2×Area
b
= 0.86603
Height hc =
2×Area
c
= 0.5
Median ma = √(a/2)2 + c2 - ac·cos(B) = 0.5
Median mb = √(b/2)2 + a2 - ab·cos(C) = 0.90139
Median mc = √(c/2)2 + b2 - bc·cos(A) = 0.66144
Inradius r =
Area
s
= 0.18301
Circumradius R =
a
2sin(A)
= 0.5
0.86 is more than 0.85 so the nearest tenths place has to be 0.9
I will also post questions and you please answer them
Which ratio is not equivalent to 5 : 8?
Answer:
10 / 28
Step-by-step explanation:
the graph shows the solution to which inequality
y>2/3x+1
Answer:
The graph shows the solution to which inequality y>2/3x+1.
Step-by-step explanation:
hope that helps
???????????????????????
Answer:
I can't see the yellow..... but it should be subtract 10 from both sides!
So the answer is cyan or light blue (2nd one)
Step-by-step explanation:
Hope this helps! Mark as Brainliest!
You are at a parade looking up at a large balloon floating directly above the street. You are 60 feet from a point on the street directly beneath the baloon. To see the top of the baloon, you look up at an angle of 53°. To see the bottom of the ballon you look up at an an angle of 29°. Estiamte the height, h, of the balloon to the nearest foot. Answer with only the numeric value
Answer:
The height of the balloon is 46 feet.
Step-by-step explanation:
Let the height from the ground to the top of the balloon be represented by x. Applying the appropriate trigonometric function, we have;
Looking at the top of the balloon,
Tan θ = [tex]\frac{opposite}{adjacent}[/tex]
Tan 53° = [tex]\frac{x}{60}[/tex]
x = 60 x Tan 53°
= 79.6227
x = 79.62 feet
Looking at the bottom of the balloon, let the height from the ground to the bottom of the balloon be represented by y.
Tan θ = [tex]\frac{opposite}{adjacent}[/tex]
Tan 29° = [tex]\frac{y}{60}[/tex]
y = 60 x Tan 29°
= 33.2585
y = 33.26 feet
The height of the balloon = x - y
= 79.6227 - 33.2585
= 46.3642
The height of the balloon is 46 feet.
Which temperature during the week is the closest to 0? Explain how you decided this using absolute value.
A -3.5 F
B 5 F
C 1.5 F
D -0.5
E -2 F
the rest of the choices 2.5 and -4
Answer: I would have to go with e because it is the closest because it is -2 and if it were to get to zero it wouldn't take that long.
Step-by-step explanation:
Help me on this please
Answer:
answer d
Step-by-step explanation:
negative exponents need to be put into the denom
how to write this numbers in word 30.659
Answer:
thirty and six hundred fifty-nine thousandths
Step-by-step explanation:
i rlly need help; finding angles
Answer:
1=35 find angle 2 80+65-180=35
2= 65 vertical angles are congruent ex 115-180
3=29 ex. 90+65-180=29
4= 115 vertical angle congruent
5=65 vertical angles are congruent ex 115-180
6=65 35+80-180=65
7=144
Answer:
∠1 = 35 ; ∠2 = 65 ; ∠3 = 29 ; ∠4 = 115
∠5 = 65 ; ∠6 = 36 ; ∠7 = 144
Step-by-step explanation:
∠4 = 115 {Vertically opposite angles}
∠5 + 115 = 180 {linear pair}
∠5 = 180 - 115
∠5 = 65
∠2 = ∠5 {Vertically opposite angles}
∠2 = 65
∠1 + 80 +∠2 = 180 {Angle sum property of triangle}
∠1 + 80 + 65=180
∠1 + 145 = 180
∠1 = 180 - 145
∠1 = 35
∠5 + ∠7 + 90 + 61 = 360 {angle sum property of quadrilateral}
65 + ∠ 7 + 90 + 61 = 360
∠7 + 216 = 360
∠7 = 360 - 216
∠7 = 144
∠6 + ∠ 7 = 180 {linear pair}
∠6 + 144 = 180
∠6 = 180 - 144
∠6 = 36
∠3 + ∠4 +∠ 6 = 180 {angle sum property of triangle}
∠3 + 115 + 36 = 180
∠3 + 151 = 180
∠3 = 180 - 151
∠3 = 29
I need help with this
Answer:
y=-1/3x+2
Step-by-step explanation:
Identify the terms of this expression
w+5w2+2w2-7w
━━━━━━━☆☆━━━━━━━
▹ Answer
w, 5w², 2w² and -7w
▹ Step-by-Step Explanation
Terms are the values which are seperated by the plus sign (+) or the minus sign (-).
In this case, we have w + 5w² + 2w² - 7w
We can see that there is a total of 3 signs, two plus signs (+) and one minus sign (-).
Therefore, our terms will be w, 5w², 2w² and -7w. There is a total of 4 terms in this expression.
Hope this helps!
CloutAnswers ❁
━━━━━━━☆☆━━━━━━━
It S.P. =Rs810, loss percent=10% find C.p
Answer:
x=900
Step-by-step explanation:
100-10=90
90/100=0.9
x*0.9=810
x=810/0.9
x=900:)
hope it helps!!
Have a great day
Find the slope of each line.
1)
(-1, 1), (-1, 4)
Answer:
The slope is undefined
Step-by-step explanation:
The equation of the line is x=-1 and this equation’s slope is undefined because it’s a vertical line.
Hope this helps and answers your question :)
Answer:
The line presented has an undefined slope.
Step-by-step explanation:
We are given two points of a line: (-1, 1) and (-1, 4).
Coordinate pairs in mathematics are labeled as (x₁, y₁) and (x₂, y₂).
The x-coordinate is the point at which if a straight, vertical line were drawn from the x-axis, it would meet that line.The y-coordinate is the point at which if a straight, horizontal line were drawn from the y-axis, it would meet that line.Therefore, we know that the first coordinate pair can be labeled as (x₁, y₁), so, we can assign these variables these "names" as shown below:
x₁ = -1y₁ = 1We also can use the same naming system to assign these values to the second coordinate pair, (-1, 4):
x₂ = -1y₂ = 4We also need to note the rules about slope. There are different instances in which a slope can either be defined or it cannot be defined.
Circumstance 1: As long as the slope is not equal to zero, there can be a
positive slope, [tex]\frac{1}{3}[/tex]negative slope, [tex]-\frac{5}{6}[/tex]Circumstance 2: If the slope is completely vertical (there is not a "run" associated with the line), there is an undefined slope. This is the slope of a vertical line. An example would be a vertical line (the slope is still zero).
Circumstance 3: If the line is a horizontal line (the line does not "rise" at all), then the slope of the line is zero.
Therefore, a slope can be positive, negative, zero, or undefined.
Now, we need to solve for the line we are given.
The slope of a line is determined from the slope-intercept form of an equation, which is represented as [tex]\text{y = mx + b}[/tex].
The slope is equivalent to the variable m. In this equation, y and x are constant variables (they are always represented as y and x) and b is the y-intercept of the line.
We can do this by using the coordinates of the point and the slope formula given two coordinate points of a line: [tex]m=\frac{y_2-y_1}{x_2-x_1}.[/tex]
Therefore, because we defined our values earlier, we can substitute these into the equation and solve for m.
Our values were:
x₁ = -1y₁ = 1x₂ = -1y₂ = 4Therefore, we can substitute these values above and solve the equation.
[tex]\displaystyle{m = \frac{4 - 1}{-1 - -1}}\\\\m = \frac{3}{0}\\\\m = 0[/tex]
Therefore, we get a slope of zero, so we need to determine if this is a vertical line or a horizontal line. Therefore, we need to check to see if the x-coordinates are the same or if the y-coordinates are the same. We can easily check this.
x₁ = -1
x₂ = -1
y₁ = 1
y₂ = 4
If our y-coordinates are the same, the line is horizontal.
If our x-coordinates are the same, the line is vertical.
We see that our x-coordinates are the same, so we can determine that our line is a vertical line.
Therefore, finding that our slope is vertical, using our rules above, we can determine that our slope is undefined.
Tell whether the rates form a proportion
28 points in 3 games; 112 points in 12 games
Yes
No
Answer: yes
Step-by-step explanation: the answer is yes
PLZ HELP I SUCK AT MATH :( JUST LIKE MY USERNAME SAYS :(
Which of the following equations have exactly one solution?
Choose all answers that apply:
(Choice A)
-19x + 18 = -19x + 18
(Choice B)
-19x -18 = -19x + 18
(Choice C)
19x + 18 = -19x + 18
(Choice D)
19x - 18 = -19x + 18
Answer:
Option C and Option D have exactly one solution.
Step-by-step explanation:
The equation will have exactly one solution when it completely solves and we get value of x.
Checking all choices
(Choice A)
-19x + 18 = -19x + 18
-19x+19x=18-18
0=0
(infinite solutions)
(Choice B)
-19x -18 = -19x + 18
-19x+19x=18+18
0≠36
(no solution)
(Choice C)
19x + 18 = -19x + 18
19x+19x=18-18
38x=0
x=0
(One solution)
(Choice D)
19x - 18 = -19x + 18
19x+19x=18+18
38x=36
x=36/38
x=18/19
(One solution)
So, Option C and Option D have exactly one solution.
hellllpppppp meeeeeee please
Answer:
#3
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
[tex]\frac{7x}{2} <5\\7x<10\\x<\frac{10}{7}[/tex]
The number 0 is a solution to which of the following inequalities? Select all that apply. x – 5 ≤ -3
Answer:
The number 0 is a solution to that specific inequality
Step-by-step explanation:
0-5 <- -3
-5 <- -3
-3 is greater than -5
Can someone help I will brainlest
Classify this polynomial.
2n
A:Liner
B:quadratic
C:cubic
D:none of these
Answer:
Step-by-step explanation:
this polynomial is to thhe first degree 2[tex]n^{1}[/tex] so is a linear one
What is the answer to 15x+9 when x=−1.
Answer:
The answer is -6.
Step-by-step explanation:
Helppp! (m−3+4n)⋅(−8)
Answer:
-8m + 3 - 32n
Step-by-step explanation:
Distributive Property
-8m + 3 - 32n
Which statement is a valid claim that could be made using the data in the graph?
Directional selection is occurring because the graph favors an extreme.
Stabilizing selection is occurring because the average is favored.
Disruptive selection is occurring because the two extremes are favored.
Biodiversity variation is occurring because there is an increase in trait variation.
Stabilizing selection is occurring because the average is favored.
If its the same graph im thinking of.
The correct statement is a valid claim that could be made using the data in the graph is,
B) Stabilizing selection is occurring because the average is favored.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Now, On this graph we can observe the workings of the stabilizing selection.
Since, Stabilizing selection tends to favor the average phenotype and eliminate the extremes.
Essentially, this means that the natural selection is selecting the mean value of a trait as optimal.
Hence, In our case, the mean weight of newborns is selected as optimal, because newborns born with less weight can be too weak to survive and the ones that have too much weight (are too big) can hurt the mother during birth.
Thus, The correct statement is a valid claim that could be made using the data in the graph is,
B) Stabilizing selection is occurring because the average is favored.
Learn more about the mathematical expression visit:
brainly.com/question/1859113
#SPJ5
Acme is selling a 6 pound turkey for $25.50.
Write the rate
What is the unit rate
Answer:
$4.25 each pound
Step-by-step explanation:
To find the unit rate you want to divide the price by the pound
25.50 / 6 = 4.25
Therefore it's $4.25 each pound which is the unit rate
What is 0.5 x 10^5 in standard form.
+
Answer:
Step-by-step explanation:
0.5 ×10^5=5/10×10^5=5×10^4=50,000
Find the inverse of the given function f(x)=-5x-9
Answer:
f-1(x)= x+9/-5
Step-by-step explanation:
1. To determine the inverse of the given function, first change f(x) to y. Then, switch x and y in the equation.
2. Now, solve the equation for y.
3. Finally, change y to f -1(x).
A soccer field is a rectangle 90 meters wide and 120 meters long. The coach asks the players to run from one corner to the other corner across the middle of the field.
Answer:
And the question is???
Answer:
Step-by-step explanation:
use the pythagorean therom:
a^2 + b^2 = c^2
substitute in your values
90^2 +120^2=c^2
multiply
8100+14400=c^2
add
22500=c^2
take the square root of both sides
c= 150 meters :)
Please help!!!!!!!!!
Answer:
ascending order:
angle KLM
angle KML
angle LKM
Step-by-step explanation:
angle opposite to the largest side is the largest angle:
largest angle = angle LKM
angle opposite to the smallestest side is the smallest angle:
smallest angle = angle KLM
A store donated 2 1/4 cases of crayons to a daycare center. Each case holds 24 boxes of crayons; each box holds 8 crayons. How many crayons did the center receive?
Answer:
432 crayons
Step-by-step explanation:
convert 2 1/4 to 9/4
1 case=24 boxes=8 crayon in each box
24*8=192 for 1 case
9/4*192=432
The center received 432 crayons
Find the slope of the line y = –5x − 1
Answer:
-5
Step-by-step explanation:
The function follows y = mx + b form where m is the slope.
m = -5
The slope is -5
Answer:
-5
Step-by-step explanation:
the equation is written in form y = mx + b
The m is the slope and the b is the y intercept.
So the m in the equation is -5.