Answer:
[tex]\sin(2\theta) =2 \sin \theta \cos \theta[/tex] proved
Step-by-step explanation:
Given
[tex]\sin2 \theta=2 \sin\theta cos\theta[/tex]
Required
Prove
Proving from left to right.
[tex]\sin(2\theta) = \sin(\theta+\theta)[/tex]
In trigonometry
[tex]\sin(A+B) = \sin A \cos B+\sin B \cos A[/tex]
When this formula is applied to:[tex]\sin(2\theta) = \sin(\theta+\theta)[/tex]
We have:
[tex]\sin(2\theta) = \sin \theta \cos \theta+\sin \theta \cos \theta[/tex]
[tex]\sin(2\theta) =2 \sin \theta \cos \theta[/tex]
Proved
One person earns $53,000 per year. Another person earns $3700 per month how much more does the first person earn in a year than the second
y = 2x? + 9x - 5x6 + 2x8
What is the degree
Answer:
5x^(5)-9x^(3)+2x^(11)
Step-by-step explanation:
go o gl e
146 Mathe Functional skills Level 1 Diagnostic
The ages of the people at a spinning class are shown below.
What is the range in their ages?
29
38
47
53
45
56
31
27
46
38
35
25
37
28
33
43
26
Exit
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DIE
Answer:
31
Step-by-step explanation:
56-25=31
Answer:
31
Step-by-step explanation:
56-25=31 (the range is the difference between the smallest and the biggest number)
What's equivalent to 4(y – 3)
Answer:
that's
Step-by-step explanation:
+4y -12 thank you
Answer:
see below
Step-by-step explanation:
4y -12 hope it helps u
What is the prime factorization of 420?
we have the factors 2 x 2 x 3 x 5 x 7 = 420. It can also be written in exponential form as 22 x 31 x 51 x 71.
Step-by-step explanation:
Answer:The prime factors are 2 x 2 x 3 x 5 x 7 .
Step-by-step explanation:
A box has length 7 feet width 4 feet and height 5 inches find the volume of the box in cubic feet and in cubic inches
Answer:
20160in3
Step-by-step explanation:
1.) Convert all measurements to inches
7ft = 84in
4ft = 48in
5in = 5in
2.) Multiply all of the values to find the volume
84in x 48in x 5in = 20160in3
Find the third side in simplest radical form:
8.
V34
Δ
Answer:
c = 7√2
Step-by-step explanation:
Apply pythagorean theorem to find the third side.
Thus, c² = a² + b²
where, c is the third side and a and b are the other sides.
Plug in the values
c² = 8² + (√34)²
c² = 64 + 34
c² = 98
c = √98
c = √(49 * 2)
c = 7√2
PLEASE HELP ASAP ITS FOR A FINAL
It is recommended that one fire extinguisher be available for every 6,000 square feet in a building. Our school
measures 150,000 square feet. Our school has 22 fire extinguishers. The custodian determines that we need more fire extinguishers in order for the entire building to be fully protected.
Answer these two questions and be certain to show and explain all your work.
How many fire extinguishers need to be purchased? What percent of the school is protected now?
Answer:
1 The minimum number of fire extinguishers for Class A hazards for each floor of a building shall be determined by dividing the total floor area by the maximum area to be protected per extinguisher as determined by Table.
Step-by-step explanation:
80% of the Australian population lives in the __________ regions of the country. A. northeastern B. northwestern C. southeastern D. southwestern Please select the best answer from the choices provided A B C D
Answer:
C. Southwestern
Step-by-step explanation:
got it right on lesson
You can mark brainliest if you want but you don't have too ฅ^•ﻌ•^ฅ ❤❤
Answer:
c
Step-by-step explanation:
Theresa has a pile of sand grains and salt grains mixed together. She wants to separate the sand from the salt. What method can she use to separate these two substances?
Answer:
the answer is A
Step-by-step explanation:
Answer:
A. heat the pile to 100c so that half the pile boils
Step-by-step explanation: I just took the test :)
Jennifer serves the volleyball to Deb with an upward velocity of 10.5ft/s. the ball is 5 feet above the ground when she strikes it. how long does debra have to react before the volleyball hits the ground
Answer:
Step-by-step explanation:
ddsfaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaafewwwaeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeefgtssssssssssssssssssccccccccccccccccccfgre
frstgsrgr
grgrgtegehhaaaaaaaaa
Which one is greater explain why. 8/10 and 0.91
Answer:
0.91 because 8/10 as a decimal is 0.8
Step-by-step explanation:
so 0.91 is bigger than 0.8
Answer:
0.91 is greater than 8/10 which is 0.8 as a decimal
Step-by-step explanation:
0.8 is also equal to 0.80 and 0.80 is less than 0.91
Solve 6x^2+125=x^2 using square roots.
Answer:
NOREAL SOLUTION
Step-by-step explanation:
6x2+125=x2
Step 1: Subtract x^2 from both sides.
6x2+125−x2=x2−x2
5x2+125=0
Step 2: Subtract 125 from both sides.
5x2+125−125=0−125
5x2=−125
Step 3: Divide both sides by 5.
Step 4: Take square root.
NOREAL SOLUTION
Javier teaches yoga classes at his community center. In a 60-minute class last night, he taught 30 poses. Today, he has a 30-minute class.
If he teaches at the same rate, how many poses will Javier teach in today's class?
Answer:
I'm guessing 15 poses because 30/60 half and 15/30 half so basically in the 60 minute lesson Javier spend 1 minute teaching them how do to each pose, so in the 30 minute lesson he'll spend 1 minute on the other poses.
Step-by-step explanation:
this was a little confusing and sorry if i dont make since
Answer:a minute !!!!!
Step-by-step explanation:
A child's ticket for the aquarium is 0.45 times the cost of an adult's ticket. An adult ticket costs $13.00. Mr. and Mrs. Lewis took their two children to the aquarium. How much did the Lewis family spend to enter the museum? help?
Wendy wants to put a wallpaper border around her bedroom. The room has two walls that each measure 10 feet 5
inches and two walls that each measure 6 feet 1 inch.
How many yards of wallpaper border must Wendy buy?
5.5 yards
11 yards
16 yards
33 yards
Answer:
11 yards
Step-by-step explanation:
The room has two sides both measuring 10 feet 5 inches. This gives a total of 20 feet 10 inches. It also has the other two sides both measuring 6 feet 1 inch and that too gives a total of 12 feet 2 inches. Adding them all together results in 32 feet 12 inches. Better still, the perimeter of the room is derived as;
Perimeter = 2 (L + W)
Perimeter = 2 (10'5" + 6'1")
Perimeter = 2(16'6")
Perimeter = 32'12"
Having in mind our conversion rate of 12 inches equals 1 foot, the results can be properly expressed as 32 feet plus 1 foot which gives us 33 feet.
If the perimeter of Wendy's room is now given as 33 feet, the conversion rate between feet and yards can now be applied. Having been given that
3 feet = 1 yard
Then 1 yard = 3 feet/3, that is
y = 3/3
Hence,
y = 33/3
y = 11
The results show that Wendy would needs to buy a total of 11 yards of wallpaper border.
Given the equation: 3x^2-12=0
a)Factor Completely
b)Solve for the solutions of the equation
Step-by-step explanation:
3x²-12=0
3(x²-4)=0
3(x²-2²)=0
3(x+2)(x-2)=0
hope it helps.
In the morning, Jasmine biked to her grandma's house in 45 minutes. When she was biking back home in the evening it was foggy and she went 4 mph slower. The trip back took her 1 hour and 10 minutes. How far from her house does her grandmother live?
Answer: 8.4 miles
Step-by-step explanation: Hope this helps
3/4 + 3/8 how do I do this I messed the last one up
Answer:
1 1/8
Step-by-step explanation:
We need to add the fractions; 3/4 and 3/8
Step 1, get the LCM of 4 and 8. The LCM of 4 and 8 is 8
Step 2, 3/4 + 3/8 = 6 + 3/8 = 9/8 = 1 1/8
Hence, 3/4 + 3/8 = 1 1/8
What is the value of 12x+y(3-23)/5
when x = -5 and y = 7?
Answer:=12x−4y
tell me if im wrong
Answer: -21
Step-by-step explanation:
1. Replace the x and y with the values and solve starting in the parentheses:
12-5 + ((7*(3-23))/5)
12-5 + ((7*(-20)/5)
12-5 + (-140/5)
12-5 + (-28)
7 + (-28)
-21
Grandma's Recipe for Sugar Cookies
1 cups kutter
2 cups sugar
4 eggs
12 teaspoon baking powder
1% cups flour
4 teaspoon salt
Your sister wants to make more cookies and decides to use 4 cups of sugar. She says that she
will need to use 3 1/4 cups of flour. Do you agree with her? Explain your reasoning.
Answer:
I agree
Step-by-step explanation:
The sugar sweetens the cookies and also because it's a sugar cookie the sugar content should be a little bit more. And when the flour is too much it makes the cookie bumpy because of its dry content. The sugar should be more to give the cookie its expected taste
A 2-column table with 6 rows. Column 1 is labeled x with entries 1, 2, 3, 4, 5, 6. Column 2 is labeled y with entries 14, 28, 42, A, B, C. Find the relationship between the quantities in the table. Then use the relationship to calculate the missing values in the table. The relationship between the quantities in the table is x equals y. A = B = C =
Answer:
The relationship between the quantities in the table is x
× 14
equals y.
A =
56
B =
70
C =
84
Step-by-step explanation:
Answer:
Find the relationship between the quantities in the table. Then use the relationship to calculate the missing values in the table.
The relationship between the quantities in the table is x
✔ 14
equals y.
A =
✔ 56
B =
✔ 70
C =
✔ 84
Step-by-step explanation:
si el area del cuadrado es de 80 m cuanto vale la m
Answer:
El lado del cuadrado es de 20 my el área del cuadrado es de 400 metros cuadrados. Paso a paso ... El perímetro de un cuadrado es 80 m. ¿Cuál es la longitud de cada lado del cuadrado ... Para celosía & lt; L, * & gt; si a, b, ce L thena + (a e b) = a se llama.
Step-by-step explanation:
PLEASE GIVE RIGHT ANSWERS WILL GIVE BRAINLIEST.
Answer:
Here u go:
1. A = -1
H = 0
K = 3
Vertex = (0, 3)
Axis of symmetry: x = 0
2. A = 1
H = -2
K = -5
Vertex = (-2, -5)
Axis of symmetry: x = -2
3. A = 3
H = 1
K = 2
Vertex = (1, 2)
Axis of symmetry: x = 1
6x+3(-2+4) when x=-2
Answer:
-8
Step-by-step explanation:
Please help me with this one
Answer:
the first one 2x -2
Step-by-step explanation:
Solve the equation and check your solution. (If an answer does not exist, enter DNE. If all real numbers are solutions, enter REALS.)
2 − 4x = 34
Answer:
x= -8
Step-by-step explanation:
2-4x=34
-4x=32
x=-8
solve for x in simplest form 10=3/5(x+5)
Answer:
x = 35/3
or
x = 11.6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666
Step-by-step explanation:
What is the square root of five
Answer:
2.24
Step-by-step explanation:
that's the square root of 5
how to solve the volume formula for cylinders using pi
The formula for the volume of a cylinder is V=Bh or V=πr2h . The radius of the cylinder is 8 cm and the height is 15 cm. Substitute 8 for r and 15 for h in the formula V=πr2h . i think the answer is this
