Answer:
k pi for k = 0, plus-or-minus 2, plus-or-minus 4, ellipsis
Step-by-step explanation:
The cosine is a maximum when its argument is at multiples of 2π.
k pi for k = 0, plus-or-minus 2, plus-or-minus 4, ellipsis
_____
Both of us could probably read this more easily if you would use appropriate math symbols.
Answer:
B
Step-by-step explanation:
Solve by using Pythagorean Theorem, a= 5, b= x-1, and c=x
The value of x is 13, from the values of x the values of a,b and c becomes 5, 12 and 13, which is obtained by using Pythagorean theorem.
Step-by-step explanation:
The given is,
a = 5
b = x - 1
c = x
Step:1
Pythagorean theorem is,
[tex]a^{2} + b^{2} = c^{2}[/tex]................................(1)
( It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides )
From the given values the equation (1) becomes,
[tex]5^{2} + (x-1) ^{2} = x^{2}[/tex]
( [tex](a-b)^{2} = a^{2} + b^{2} -2ab[/tex] )
25 + ( [tex]x^{2}[/tex] + 1 - 2x ) = [tex]x^{2}[/tex]
25 + 1 -2x = 0 ( ∵ Eliminate [tex]x^{2}[/tex] in both sides)
26 = 2x
x = 13
Step:2
From the values of x,
a = 5
b = ( 13 - 1 ) = 12
c = 13
Result:
The value of x is 13, from the values of x the values of a,b and c becomes 5, 12 and 13, which is obtained by using Pythagorean theorem.
3) The algebraic process you use to isolate a variable in order to find what values, numbers, etc. will make an equation true. You _ _ _ _ _ the equation.
Answer:
You solve the equation.
Step-by-step explanation:
The process of finding variable values that make the equation true is called solving the equation.
7x+11x
12y-5y+19
3t+6z-4t+9z+z
19mn+6x^2+2nm
5x+3(x+1)+2x-9
Simplify each expression
Answer:
18 x
7 y+19
-t+16 z
6 x^2 +21 m n
10 x - 6
Step-by-step explanation:
Add the coefficients
Subtract the coefficients
Combine like terms
Combing like terms
Distribute the three into the parenthesis then combine the like terms.
Look at the attached picture ⤴
Hope it will help u........
Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest
Answer:
3
Step-by-step explanation:
What does the line on the bottom of the following signs mean? ≥ ≤
Answer:
Step-by-step explanation:
Equal to or less than
Answer: I hope this helps. Mark me brainlist
Step-by-step explanation:
The symbol ≤ means less than or equal to. The symbol ≥ means greater than or equal to.The notation a ≤ b or a ⩽ b means that a is less than or equal to b (or, equivalently, at most b, or not greater than b). The notation a ≥ b or a ⩾ b means that a is greater than or equal to b (or, equivalently, at least b, or not less than b).The five inequality symbols in Maths are greater than symbol (>), less than symbol (<), greater than or equal to symbol (≥), less than or equal to symbol (≤), and not equal to symbol (≠).
Laura mowed 8 lawns. She earned $12, $10, $15, $15, $15, $10, and $9 for seven lawns. How much did she earn the eighth time if the mean of the data is $12? *
Answer:
She earned $10 for mowing the 8th lawn.
Step-by-step explanation:
Let's use the average formula and n = 8, with x representing the 8th score:
12 + 10 + 15 + 15 + 15 + 10 + 9 + x
average = 12 = -------------------------------------------------
8
86 + x
Summing up the numerator, we get average = ----------- = 12
8
Multiplying both sides by 8 yields 86 + x = 96
Solving for x, we get x = 10.
She earned $10 for mowing the 8th lawn.
Answer:
She earned $10 for the eighth yard.
Step-by-step explanation:
You have 7 known numbers and 1 unknown giving you a total of 8 numbers. When doing mean, you add up all the numbers and divide by the amount of numbers you have (in this case 8). If you add all the numbers in this particular data set you get 86. You know that you have to divide by 8 and you need 12 to be the answer. Using multiplication facts, we know that 96 divided by 8 is equal to 12. That means the answer must be 10 for the eighth yard because 86+10=96.
please help me find the answer to this problem
Answer:
13.5
Step-by-step explanation:
6 + 3 = 9
9 × 3 = 27
27 ÷ 2 = 13.5
brainliest?
I need help finding X please
Hello
This is a right angle as you can see by the small square at the bottom. So this means that it is 90 degrees.
Because we already know part of the 90 degrees, we can do 90-50 degree which leave us with 40 degrees.
So as we look at 8x, it needs to equal 40
- 8x=40 divide both sides by 8
- x=5
Hope this helps!
Kesha threw her baton up in the air from the marching band platform during practice. The equation h(t) = −16t² + 54t + 40 gives the height of the baton, in feet, t seconds after it is thrown from the platform. What is the height of the platform? At what speed was the baton thrown? If she doesn't catch it, when will it hit the ground?
Answer:
(a)Height of the platform=40 feet
(b)Initial Velocity=54 ft/sec
(c)4 seconds
Step-by-step explanation:
The equation [tex]h(t) = -16t\² + 54t + 40[/tex] gives the height of the baton, in feet, t seconds after it is thrown from the platform.
(a)Height of the platform
The Height of the platform is the height at which t=0
[tex]h(0) = -16(0)\² + 54(0) + 40[/tex]
Height of the platform=40 feet
(b)To determine the speed at which the baton was thrown, we find the velocity, v(t).
[tex]v(t)=\frac{dh}{dt} =\frac{d}{dt} (-16t\² + 54t + 40)=-32t+54\\$At t=0\\v(0)=-32(0)+54=54 feet/sec[/tex]
(c)The baton will hit the ground when its height, h(t)=0
[tex]-16t\² + 54t + 40=0\\\text{Solving the quadratic formular}\\t = \frac{-54\pm \sqrt{(-54)^2 - 4*40*(-16)} }{2*-16}\\= \frac{-54\pm \sqrt{5476 }}{-32}\\= \frac{-54\pm 74}{-32}\\t=\frac{-54+ 74}{-32},\frac{-54- 74}{-32}\\t=-0.625\:or \:t=4[/tex]
Since -0.625 is not valid, the baton will hit the ground 4 seconds after it is thrown.
what is the median value of data set shown on the line plot?
enter your answer in the box
Answer:
A Median is the middle data value of an ordered data set, so, that leads me to believe that the answer is 6
Hope this helps!!
Have a nice day :)
Step-by-step explanation:
Answer:
6
Step-by-step explanation:
What number added to -31 results in a sum of O?
Answer:
31
Step-by-step explanation:
thats the absolute value
10 POINTS!!
What is the length of side PQ in this figure?
Answer:
C
Step-by-step explanation:
o find the side PQ ; we need to first find the length of the given line segment which is perpendicular to side PR; let name it as QS.
Now as ΔQSR is an right angled triangle.
and the length of the side QR and SR is given , so using Pythagorean theorem we have
QR^{2}=SR^{2}+QS^{2}
5^{2}=3^{2}+QS^{2}\\ \\QS^{2}=5^{2}-3^{2}\\\\QS^{2}=25-3=16=4^2
⇒ QS=4
Now again ΔQSP is an right angled triangle; so using Pythagorean theorem in ΔQSP we have
PQ^{2}=QS^{2}+PS^{2}\\ \\PQ^{2}=4^{2}+6^{2}=16+36=52
This means QS=\sqrt{52}=2\sqrt{13}
Hence, the length of side PQ is \sqrt{52}=2\sqrt{13}.
Hence, option C is correct.
plz mark brainliest
Answer:
C
Step-by-step explanation:
I just got it right
There are two approaches to solving the equation -3x + 10 = 4x - 20
Subtract 4x from both sides. OR Add 3x to both sides.
-7x + 10 = –20 OR 10 = 7x - 20
Solve the equation using both approaches.
What is the solution?
Answer:
You can take this equation into two approaches.
#1 subtracting 4x from both sides:
-3x+10=4x-20 (subtract 4x from each side)
-7x+10=-20 (then subtract 10 from each side)
-7x=-30 (then divide by -7 to get x by itself)
x=30/7
#2 Add 3x to both sides:
-3x+10=4x-20 (Add 3x to both sides)
10=7x-20 (then add 20 to each side)
30=7x (divide both sides by 7)
30/7=x
Either way you do it you will get x=30/7 as your answer.
Hope this helps ;)
Answer:letter c x=30/7
Step-by-step explanation:
What is the arc measure, in degrees, of AC on circle P below?
Answer:
174 degrees.
Step-by-step explanation:
Hope this helps!
Which of these equations has a y-intercept of 4?
A. y=x+4
B. y=x-4
C. y=4x
D. y+4=x
Answer:
A
Step-by-step explanation:
Since A is already in slope intercept form, we know that the b value is already in the correct place.
y = mx + b
In slope intercept form, the b is the y int.
Thank me later :)
Answer:
Option A, y = x + 4
Step-by-step explanation:
Step 1: Determine which option is correct
y = mx + b
m is the slope while b is the y-int
So... the equation with a 4 for b should be the correct answer.
Option A states the following: y = x + 4
This shows that the y-int is 4 and the slope is 1. So, this answer is correct.
Answer: Option A, y = x + 4
A private club was reduced by 27 members in 3 weeks. Its size changed by the same number of members each week. What was the change in the club's size each week?
Final answer:
The club's size decreased by a total of 27 members over 3 weeks. By dividing 27 by 3, we find that the size changed by 9 members each week.
Explanation:
The question asks about a private club which lost 27 members over the course of 3 weeks, with an equal number of members leaving each week. To find the change in the club's size each week, we divide the total number of members who left by the number of weeks. This calculation is done by taking the total decrease in members, which is 27, and dividing it by the 3 weeks.
Identify the total decrease in members: 27.
Identify the total number of weeks: 3.
Divide the total decrease in members by the number of weeks: 27 members ÷ 3 weeks = 9 members per week.
Therefore, the club's size changed by 9 members each week.
(1 point)
2. You have made 3 out of 10 of your last free throws. How many free throws can you expect to
make if you shoot 100 free throws?
30
50
60
75
Answer:
30
Step-by-step explanation:
Answer:
30.
Step-by-step explanation:
10 x 10= 100, 3 x 10 = 30.
therefore, you should make 30 free throws
HELP PLZZZZ I DONT KNOW
Answer:
41.5 cm^2
Step-by-step explanation:
The area of the right triangle is
A =1/2 bh where b = (2+7) and h=(4+7)
=1/2(9)(11)
49.5
The area of the rectangle is
A = l*w where l is 2 and w is 4
A = 2*4 = 8
The shaded region is the area of the triangle minus the area of the rectangle
A shaded = 49.5 - 8 = 41.5
The following histogram summarizes the number of points Nate has scored each game this season.
Answer:8/25
Step-by-step explanation:
Answer:
[tex]\frac{8}{25}[/tex]
Step-by-step explanation:
Experimental probability = Number of favorable outcomes / Total number of outcomes
Number of favorable outcomes = [tex]8[/tex]
Total number of outcomes = [tex]3+5+8+6+2+1 = 25[/tex]
The probability that Nate scores [tex]8-11[/tex] points next basketball game is [tex]\frac{8}{25}[/tex].
Solve for x.
9x - 1 = -11
Answer:
X=-1.1 repeated
Step-by-step explanation:
9x - 1= -11
+1= +1
9x = -10
Divide by 9 on both sides
X = -1.1 repeating
Answer:
- 1 1/9
Step-by-step explanation:
9x - 1 = -11
Add 1 to both sides to eliminate -1 on the left side
9x - 1 + 1 = -11 + 1
9x = -10
Divide both sides by 9 to isolate x
9x/9 = -10/9
x = - 1 1/9
Help please ^^ I am confused
Answer:
180
Step-by-step explanation:
4 x 28 + 64 = 176 round up to 180
40% of a number is 38 what is the number
Answer:
15.2
Step-by-step explanation:
Answer:
95
Step-by-step explanation:
38/2 = 19 = 20% x 5 = 100%
A rectangle is always a square? True or false?
Answer:
False
Step-by-step explanation:
A square is defined as a quadrilateral with 4 congruent sides, but a rectangle is defined as a quadrilateral with 2 pairs of congruent sides, so unless the 2 pairs in a rectangle are the same length, no the rectangle is not a square. However all squares are rectangles.
"A rectangle is always a square" is false statement.
Rectangle:A rectangle is quadrilateral, in which opposite sides are equal in length and all four angles are equal to 90 degree.
A square is quadrilateral, in which all four sides are equal in length and all four angles are equal to 90 degree.
A square is always a rectangle, but a rectangle is not always a square.
Therefore, given statements is false.
Learn more about the properties of square here:
https://brainly.com/question/1538726
What are all of the keys that must be pressed, in correct
order, on the calculator shown to find the value of 6,704 x 9?
1.) 6704*9
2.) 6.704*9
3.) C6704*9
4.) C6.704*9
Line ABC is a straight line.
Line A B is a straight line. Line B comes out of the line to form angles 1 and 2.
Which describes the relationship between Angle 1 and Angle 2?
Angle 1 and Angle 2 are complementary angles.
Angle 1 and Angle 2 are supplementary angles.
Angle 1 and Angle 2 are vertical angles.
Angle 1 and Angle 2 are acute angles.
Answer:
B: supplementry angles
Step-by-step explanation:
Answer: Angle 1 and Angle 2 are supplementary angles.
Step-by-step explanation:
which equation represents a circle with a center at (-3,5) and a radius of 6 units
Answer:
(x+3)^2 +(y-5)^2 = 36
Step-by-step explanation:
We can write the equation of a circle as
(x-h)^2 +(y-k)^2 = r^2 where (h,k) is the center and r is the radius
(x- -3)^2 +(y-5)^2 = 6^2
(x+3)^2 +(y-5)^2 = 36
Jules kicks a soccer ball off the ground and into the air with an initial velocity of 25 feet per second. Assume the starting height of the ball is 0 feet. Approximately how long does it take until the soccer ball hits the ground again? (1 point)
Group of answer choices
0.6 sec
0.8 sec
1.6 secs
2.8 secs
Answer:
the answer is 1.6 seconds
Step-by-step explanation:
Which of these values cannot represent the probility of an event happening? 0.33 56% 7/8 1.2
Answer:
1.2
Step-by-step explanation:
Because the probability cannot be over 1 (assuming 1 is 100%) you can't have a 120% chance.
1.2 Answer:
dont thank me thank other guy Step-by-step explanation:
eight and eleven hundredths as a decimal
Answer:
this is your answer 8.110
Answer:
8.11
Step-by-step explanation:
is a whole number so it goes in front of the decimal points. eleven hundredths could be written as .110 or.11
Ryan gets off the bus at 4: 09 PM. He rides the bus for 17 minutes to get home from school. At what time does Ryan get on the bus?