Answer:
Formula:(from trigonometry)
Tan(A+B)=(tanA+tanB)/(1-tanA*tanB)
Let A=22 degrees,B=23 degrees
Tan(22+23)=(tan22+tan23)/(1-tan22*tan23)
From trigonometry we know tan45=1
Therefore tan(45)=1=(tan22+tan23)/(1-tan22tan23)
=> 1-tan22tan23=tan22+tan23
=> tan22+tan23+tan23tan22 =1
Hence proved
Nobody answered me all day and I really need help can someone answer this?
Answer:
reflect over y axis
x+1 y+4
Step-by-step explanation:
Answer:
y axis -2, 4
Step-by-step explanation:
Rachael walked 214 miles in 15 minutes, and Julie walked 334 miles in 25 minutes. Could you tell me who is faster, please?
Answer:
Rachael is faster.
you can tell by finding the unit amount.
Step-by-step explanation:
I can tell by finding the unit amount. (miles per minute)
Rachael:
214/15 = 14.2666666667 or about 14.27
Julie:
334/25 = 13.36 miles per minute.
Wal-Mart sells a case of 24 cans of Diet Coke for $6.88. To the nearest
cent, how much does it cost per can? *
Answer:
$0.29 cents
Step-by-step explanation:
6.88/24 = 0.28666666666 about 0.29
James and Kevinj are looking at this table of values. James says that the pattern rule is “Start with 3 and add 3.” Kevin says that the pattern rule is “Multiply the term number by 3.” Who is right? Explain. PLEASE ANSWER
Answer:
They are both right
Step-by-step explanation:
Adding 3 and multiplying 3 to the term number is the same thing
Solve for the missing variable. Round your answer to the nearest tenth.
9514 1404 393
Answer:
x = 7
Step-by-step explanation:
We assume the hash marks are intended to indicate both triangles are isosceles. Then the right-end angle of the upper triangle is ...
180° -2(75°) = 30°
Its complement is the supplement of the "missing variable" angle.
90° -30° = 180° -(18x -6)°
18x = 126 . . . . . rearranging (add 18x -60)
x = 7 . . . . . . . . . divide by 18
if a circle has a radius of 50 cm what is the area
Answer
A≈7853.98cm²
Step-by-step explanation:
A=πr2=π·502≈7853.98163cm²
hope this helped
Find the slope of the line that contains (-1,4) and (2,6).
Question 2 options:
2
_
3
3
_
2
5
_
4
-2
_
3
On the first day, 8 adult tickets were sold and 13 student tickets were sold for a total of $75. On day two, 10 adult tickets were sold and 9 student tickets were sold for a total of $72. What is the cost of an adult ticket? What is the cost of a student ticket?
Step-by-step explanation:
8x + 13y = 75 (×10)
10x + 9y = 72 (×8)
80x + 130y = 750
-) 80x + 72y = 576
58y = 174
y = 3
10x + 9(3) = 72
10x + 27 = 72
10x = 72 - 27
10x = 45
x = 4.5
adult = $4.50
student = $3
A racquet tennis is on sale for 30% off. Find the original price if the sale price is $21.
Given the quadratic 7x2 +6x– 1,
Step-by-step explanation:
7x^2+7x-x-1
7x(X+1) -1(X+1)
(7x-1) (x-1)
X=1/7 , 1
A bank account has a beginning balance of $460.00. After 6 months, the balance in the account has increased to
$465.75. What interest rate is being earned annually on this account?
****************DISCLAIMER****************
might not be right, im pretty sure tho
Answer:
the annual interest return rate is .025 i believe.
Step-by-step explanation:
after 6 months the money increased by 5.75 bucks.
the 6 month return rate was .0175, so double that to get the annual rate.
Is there anyone that can help me with questions 1-16?
Step-by-step explanation:
5x=41.5
5x/5=41.5/5
x=41.5/5
x=8.3cm
1. g - 7 = 15
g = 15 + 7
g = 22
2. t + 4 = 6
t = 6 - 4
t = 2
3. 13 = m - 7
m - 7 = 13
m = 13 + 7
m = 20
4. x + 3.4 = 9.1
x = 9.1 - 3.4
x = 5.7
[tex]5. \: \: n \: - \: \frac{3}{8} \: = \: \frac{1}{8} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: n \: = \: \frac{1}{8} \: + \: \frac{3}{8} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: n \: = \frac{4}{8} = \frac{2}{4} = \frac{1}{2} [/tex]
There is a bag with only red marbles and blue marbles. The probability of randomly choosing a blue marble is 2/9 . There are 63 marbles in total in the bag and each is equally likely to be chosen. Work out how many red marbles there must be.
Answer:
49 red marbles
Step-by-step explanation:
There is a bag with only red marbles and blue marbles.
We are told in the question that:
The probability of randomly choosing a blue marble is 2/9 . There are 63 marbles in total in the bag
Hence: since
P(Blue marbles) = 2/9
Hence,
The number of blue marbles = 63 ÷ 9
= 7
Hence:
2 × 7/9 × 7 = 14/63
Hence, the number of blue marbles = 14 blue marbles
The number of red marbles bus calculated as:
63 - 14 blue marbles
= 49 red marbles
PLEASE ANSWER ASASP FOR BRAINLEST!!!!
The length of each of the two congruent sides of an isosceles triangle is 2n + 7 and the length of the third side is 3n. Write an expression for the length of the triangle’s perimeter.
Answer:
7n+14
Step-by-step explanation:
There are two sides that both measure 2n+7, we need 2 of those
2n+7+2n+7=4n+14
We still have the third side left, 3n.
4n+14+3n
combine like terms
7n+14
what property is 2 + (8 + 3) = (2 + 8) + 3
Answer:
Step-by-step explanation:
The property is commutative property because the numbers can be moved or swapped without making the answer different.
Not sure
How long is the drawing of that piece?
Answer:
5 inches
Step-by-step explanation:
Example 15
Prove that
sin 8 -cos 6 +1 - 1
sin 6+cos - 1 sec - tan
9
using the identity
0
sec?
= 1 + tan?
e.
cos
(
x
)
+
sin
(
x
)
tan
(
x
)
=
sec
(
x
)
The solution is, the simplified value of the expression is, 1.
To simplify the expression, we need the trigonometric identities given:
we know that,
1. cot=1/tan
2. tan=sin/cos
3. sec=1/cos
so, we have,
cot θ sec θ sin θ = 1/tanθ(1/cosθ)sinθ
= (1/(sinθ/cosθ))(1/cosθ)sinθ
= (cosθ / sinθ) (1/cosθ)sinθ
= 1
The expression is equal to 1.
To learn more about trigonometric relations click :
brainly.com/question/14450671
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plzzzzzzzzzzzzzzzzzzzzzzzzzzzz helppppppppppppppppppppppppppp
Solve the solution to the inequality below.
-6x-10>26
Answer:
X equals -6
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.Inequality Form
12. Let [AB] + [BC] = [AC], and [MN] + [NK] = [MK].
Which points are between two other points?
A) A and M
C) C and K
B) B and M
D) B and N
Pre-Geometry
What is the domain of y=sqrtx+7+5
Answer:
c on edge 2020
Step-by-step explanation:
Park Middle School has 798 students. If 685 of them have pets, estimate the percentage of students at Park that have pets
Answer:
bruh literall just go on a calculator and put 685%798
Step-by-step explanation:
Answer:
685/798*100=0.85=85%
Step-by-step explanation:
685 divide by 798 multiply by 100 = 85 percent.
Xbox 360 and lunzzotoon worth
Answer:
Xbox ONE
Step-by-step explanation:
(and Series X)
I got this question wrong. I have no idea how to do it. thank you!
Answer:
Aqua: 26.8cm
Purple: 36cm
Step-by-step explanation:
(13.4*4)/2 = 26.8 = aqua2((9*4)/2) = 36 = purple36 + 26.8 = 62.8 = total areaAt Smith's Bike Rentals, it costs $40 to rent a bike for 8 hours. How many dollars does it cost per hour of bike use?
Answer:
5
Step-by-step explanation:
What is an equation of the line that passes through the points (5, 8) and (5,3)?
Answer:
x = 5
Step-by-step explanation:
to find the slope of the line you take the difference of the y-values divided by the difference of the x-values; the denominator results in zero
When the denominator for slope is zero then you know the line will not intersect the y-axis at all and the line will be vertical and intersect the x-axis at the x-coordinate of any known point
any fraction with zero in the denominator is considered to be 'undefined'
any fraction with zero in the numerator is zero
74,830 to the nearest mile
And 54,544 to the nearest mile
Answer:
70,000 50,000
Step-by-step explanation:
just round it. not sure if it right
Solve the system by substitution 10x-2y=-16 and y=3x
Hello! Can someone please help me with this 1 questions! thank you so much! (i’ll give brainlist)
Answer:
x = 10 mm is the answer
pls mark me as the brainliest
A shirt is advertised for 30% off the list price of $19.00. What is the sale price?
Answer:
$5.70 of so 13.30
Step-by-step explanation:
$5.70 of from the $19 so it would be 13.30
Answer:
The shirt would cost $13.30
Step-by-step explanation:
Divide
[tex]19/100 = .19[/tex]
Take off 30%
[tex]100-30=70[/tex]
Multiply
[tex].19*70= 13.3[/tex]
an electronics manufacturer has 175 capacitors and the same