prove that cos130°+cos110°+cos10°=0
Answers
Answer:
Use the formula cosC+cosD:2cos(C+D/2)cos(C-D/2) Use this in the question: 2cos(10+110/2)cos(10-110/2)+cos130=0 2cos60°cos(-50°)+cos130°=0 2×1/2.cos50+cos130=0 cos50+cos130=0 2cos(50+130/2)cos(50-130/2)=0 2cos90.cos40=0 2×0.cos40=0 0=0 H.P
Step-by-step explanation:
Related Questions
I need helps can someone help me please!!!
Answers
Answer:
Jk= 27
LM= 22
KL= 16
MJ=16
Answer:
JK=27
LM=27
KL=16
MJ=16
Step-by-step explanation:
JK=4x+7
=27
LM=5x+2
=27
KL=2y-2
=16
MJ=y+7
=16
so, JK= 27 and KL=16
(I hope u got it)
Is all squares are quadrilaterals?
Answers
Percent is always out of _________ ?
Answers
Answer:
Percent is always out of 100
Step-by-step explanation:
Answer:
100
Step-by-step explanation:
I'm back.... Can someone please help me with these two problems?
Answers
Answer:
It is b and a
Step-by-step explanation:
Graph the inequality by finding the boundary line, then shading the appropriate area.
y>−7/3+2x/3
Answer: b and a is ur answer
Step-by-step explanation:
summer babysitting. She decided
to put this money in a bank that
earns a 5% simple interest rate.
How many years will it take to
double her initial deposit?
A) 10 years
B) 12 years
C) 15 years
D) 18 years
E) 20 years
Answers
Answer: B.12 years
Step-by-step explanation:
I don’t know this someone help
Answers
y= 76
not sure abt the other one
Answer:
yes what that guy said is right
HURRY THIS IS MY LAST THING FOR THIS ASSIGNMENT. Maria is using a coordinate plane with the axes labeled only with integers. She says that the point (−0.5, 2) cannot be plotted because halves are not numbered on the x-axis. Write a note to Maria about her misunderstanding and explain how to plot the point.
Answers
Answer: You can have halves of points, Just because I have 0 units and 1 units doesn't mean that I can't put a point in the middle of the two. You could put a point in the middle of a unit for 0 - 1 it would be 0.5. You would place it in the middle of the unit
Step-by-step explanation:
3/16 equals -5/4+ G solve for G
Answers
Answer:
G = 23/16 OR G = 1.4375
Step-by-step explanation:
3/16 = -5/4 + G
Get the constants on one side. Add 5/4 on both sides.
3/16 + 5/4 = G
To add fractions, find the common denominator. The smallest denominator between these two fractions is 16.
3/16 stays the same since it already has the denominator of 16. To turn the denominator (4) in 5/4 into 16, multiply it by 4. Whatever you do to the denominator, you must do to the numerator.
5 x 4 = 20
The second fraction is now 20/16
3/16 + 20/16 = 23/16
G = 23/16
Step by step:
3/16= -5/4 + G
3/16+5/4 = 3/16 + 20/16
G= 23/16
What is the poH of a
8.4 x 10-11 M OH solution?
Answers
Answer:
p O H = 10.08
Step-by-step explanation:
Answer:
10.08
Step-by-step explanation:
Acellus sucks
A bottie contains 255 coins.
1/3 of the coins are £1 coins.
110 of the coins are 50p coins.
The rest of the coins are 20p coins.
Work out the total value of the coins contained in the bottle.
Answers
Answer:
£152
Step-by-step explanation:
Solution:
Find out how much is 1/3 of 255 coins:
255 x 1/3 = 85
Since you know how many 50p and £1 coins there are, the remaining of the coins after the 50p and £1 get deducted from the total coins.
255 - 85 - 110 = 60
There are 60 20p coins, 85 £1 coins and 110 50p coins.
Find out the total value by calculating them all altogether.
60 x 20p = 1200
85 x 100p which is £1 = 8500
110 x 50p = 5500
I did them separately so that it wouldn't be so confusing.
Convert them into £, then after that add them up.
£12 + £85 + £55 = £152
Sophie, Leroy, Jose, and Maddie all work for the same IT company. Match each employee with their type of earned income.
a. Sophie is an independent contractor.
b. Leroy is a salaried employee.
c. Jose works on commission.
d. Maddie is an hourly employee.
1. This employee is paid a specific amount for each hour that they work.
2. This employee does not have payroll taxes withheld from their paycheck.
3. This employee is paid a percentage of all revenue that they generate for the company.
4. This employee will often work 50 hours per week but receives the same amount of pay for the weeks that they only work 40 hours.
Answers
B=4 Leroy salaried salaried which means he can work 50 hours or even 60 hours but will still get paid the 40 hour salary.
C=3 Jose is on commission which means he receives a percentage of the revenue.
D=1 Maddie is an hourly employee so she gets paid a specific amount for each hour that she works.
how many sides does a regular polygon have if the measure of an interior angle is 160 degrees? justify ur answer EXPLAIN HOW PLSSS
Answers
Step-by-step explanation:
Size of Interior angle = 180° - 360°/n, where n is the number of sides of the regular polygon.
We have 180° - 360°/n = 160°.
=> 360°/n = 20°, n = 18.
Therefore it is a 18-sided regular polygon.
Which of the following segments is a diameter of o
?
Answers
Answer:
BD
Because it is straight line segment that passes through center from one point in circumference to other
how many 1/3's are in 3
Answers
Answer:
9
Step-by-step explanation:
1/3 times9=3
22= 18x + 4 please help!!
Answers
Answer:
x=1
Step-by-step explanation:
22-18=4 18-18=/
18x1=18
22=18(1)+4
22-18(1)=4
Answer:
22=18x + 4
Step-by-step explanation:
collect like terms 22 and +4
+4 crosses equality sign and turns to -4
you get 22-4=18x
therefore 18x=18
cancel 18 in both sides x = 1
Joshua had a poster he wanted to enlarge. The original poster had a length of 12 inches and a width of 8 inches. The enlarged poster had a width of 24 inches. The length of the enlarged poster is
in.
Answers
12 times 3=36
8 times 3=24
Otherwise it would be 27
What is the answer for
3days : 18hrs
Answers
Answer:
4 : 1
Step-by-step explanation:
(3 days : 18 hours) this is a ratio , where both the units must be same before simplifying.
1 day = 24 hours, 3 days = (3 × 24) hours
3 days = 72 hours
Now both the units are same, so we can easily simplify now.
72 hours : 18 hours
36 : 9 = 12 : 3
= 4 : 1 ( Answer)
Are the lines y=4 and x=-3 perpendicular
Answers
Answer:
Yes, because y=5 will intersect the y axix (giving a horizontal line) and x =-3 will intersect the x axis (giving a vertical line). They will intersect at angle 90.
Step-by-step explanation:
Please gimme brainliest
Answer:
Yes
Step-by-step explanation:
When you graph y=4 it is a horizontial line going straight forever. You would mark a dot on postive four on the y-axis. For x, do the same thing mark on the negative three on the x-axis. But this one will be vertical.
REMEMBER-
Although the x-axis is horizontial when there is no Y (x,y) it will be vertical. And it is opposite for the Y.
7x + 10 = 6X + 4(-3+3X)
Answers
Step-by-step explanation:
7x+10=6x+4(-3+3x)
7x+10=6x-12+12x
7x-6x-12x=-12-10
-11x=-22
x=-22/-11
x=2
..sorry if the answer is wrong
Points B (-4,4)and D (10, 4) lie on circle G. The line segment connecting the two points is the diameter of the circle.
Which equation represents G?
A) (x-3)^2+(y-24)^2=49
B) (x-10)^2 + (y-4)^2=49
C) (x+3)^2 + (y-4)^2 = 49
D) (x+4)^2 + (y-4)^2 =49
Answers
Answer: should be a
Step-by-step explanation:
Answer:
took the NWea test the answer is A A) (x-3)^2+(y-24)^2=49
Step-by-step explanation:
Used math calc to find the answer it gave me 3,4 its not C because if you plug in the math in the calculator it will result in a -3,-4THE CORRECT ANSWER IS A) (x-3)^2+(y-24)^2=49
not C. Hope this helps :)
In 1839, Georgia produced 326,000 bales of cotton . By 1860, the state produced 700,000 bales. What was the approximate percent of increase in the bales produced during that 21-year period?
Answer Choices .
46 percent
147 percent
4.7 percent
115 percent
Answers
The answer is 46 percent
Write 0.0000055 in scientific notation
Answers
Answer:
(b) 5.5 × 10^-6
Step-by-step explanation:
hope if helps
help help help with this
Answers
Answer:
11/2
Step-by-step explanation:
y = mx + b is the equation
m = slope is change of y over change of x
(7)- (-4) / (-4) - (-6) = 11/2
pls help !! - Using the graph below, what is the rule for a translation form point A to point D?
Answers
Answer:
B
Step-by-step explanation: i took the test on docs/forms
Can someone help with the answer?
Answers
Troy and Lisa were shopping for school supplies. Each purchased different quantities of the same notebook and thumb drive. Troy bought 4 notebooks and 5 thumb drives for $116. Lisa bought 2 notebooks and 3 thumb drives for $68. Find the cost of each notebook and each thumb drive.
Answers
Answer:NOTEBOOK= 4
THUMB DRIVE=20
Step-by-step explanation:
The cost of thumbdrive and notebook purchased are $20 and $4 respectively
Let :
Cost of Notebooks = n
Cost of Thumb drive = t
Troy :
4n + 5t = 116 - - - - (1)Lisa :
2n + 3t = 68 - - - - (2)Solving by elimination :
Multiply (1) by 2 and (2) by 4
8n + 10t = 232 - - - (3)8n + 12t = 272 - - - (4)Subtract (3) and (4)
-2t = - 40t = 40 ÷ 2 = 20From (1)
4n + 5(20) = 1164n + 100 = 1164n = 116 - 1004n = 16n = 16 ÷ 4 = 4Hence, cost of notebook is $4 and cost of thumbdrive is $20
Learn more :https://brainly.com/question/15165519?referrer=searchResults
HELP PLEASE
Determine the length of a chord whose central angle is 65° in a circle with a radius of 9 feet.
Question 5 options:
1)
4.84 feet
2)
9 feet
3)
9.67 feet
4)
8.16 feet
Answers
Answer:
3)
9.67 feet
Step-by-step explanation:
The length of the chord is approximately 8.16 feet. The correct option is 4.
What is the length of the chord of the circle?A line segment connecting two points on a circle is referred to as a circle's chord in geometry. The circle's center is traversed by the longest segment that can be drawn between any two points on the circle.
To get the chord's length, we can utilize the formula for a circle's chord length. The equation is:
Length of chord = 2r sin(θ/2)
where r is the circle's radius, is its radian central angle, and sin is the sine function.
First, we need to convert the central angle from degrees to radians:
θ = 65° = (65/180)π = 1.14 radians
Now we can plug in the values:
Length of chord = 2(9 feet) sin(1.14/2) ≈ 8.16 feet
Therefore, the length of the chord is approximately 8.16 feet.
To know more about the chord of a circle follow
https://brainly.com/question/8937665
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A local pizza shop has a membership program for frequent buyers. The membership
costs $15 per month and members get a discounted price of $2 per slice of pizza.
Mayerlin purchased a membership to this pizza shop. How much would Mayerlin
have to pay the pizza shop if she bought 11 slices of pizza this month? What would be
the monthly cost for x slices of pizza?
Answers
Answer:
cost of slices=2x
cost=monthly fee+cost of slices
15x+2x
Step-by-step explanation:
Find each value given f(x).
1. If f(x) = 2x + 3, then f(5) =
Answers
Answer:
f ( 5 ) = 13
Step-by-step explanation:
Step 1:
f ( x ) = 2x + 3 Function
Step 2:
x = 5 Given
Step 3:
f ( 5 ) = 2 ( 5 ) + 3 Input x value
Step 4:
f ( 5 ) = 10 + 3 Multiply
Step 5:
f ( 5 ) = 13 Combine Like Terms
Answer:
f ( 5 ) = 13
Hope This Helps :)
Answer:
f(5) = 13
Step-by-step explanation:
f(x) = 2x + 3
f(x) = 2(5) + 3
f(x) = 13
eden purchased a home for $156,200. The home appreciates about 4.5% each year. what is the value of the home after 17 years?
Answers
Answer:
590,088
Step-by-step explanation:
So you divide 156,200 by 4.5 then once you have that times it bye the 17 years I think