Answers
Step-by-step explanation:
We have sinA = 4/5 and sinB = 7/25.
=> cosA = sqrt(1 - sin²A) = 3/5
=> cosB = sqrt(1 - sin²B) = 24/25
P.S. Cosine must be positive in Quadrant I.
sin(A - B)
= sinAcosB - cosAsinB
= (4/5)(24/25) - (3/5)(7/25)
= 75/125 = 3/5. (Shown)
Related Questions
33 + 8
5
1 - 2:
2
Solve for x
Answers
Answer:
its 882
Step-by-step explanation:
What is the solution to the system of equations below? {2y=x+63x=y+7 (5, 4) (20, 13) (13, 20) (4, 5)
Answers
Answer:
(4,5)
Step-by-step explanation:
Let's solve your system by substitution.
2y=x+6;3x=y+7
Step: Solve2y=x+6for x:
2y=x+6
2y+−x=x+6+−x(Add -x to both sides)
−x+2y=6
−x+2y+−2y=6+−2y(Add -2y to both sides)
−x=−2y+6
−x
−1
=
−2y+6
−1
(Divide both sides by -1)
x=2y−6
Step: Substitute2y−6forxin3x=y+7:
3x=y+7
3(2y−6)=y+7
6y−18=y+7(Simplify both sides of the equation)
6y−18+−y=y+7+−y(Add -y to both sides)
5y−18=7
5y−18+18=7+18(Add 18 to both sides)
5y=25
5y
5
=
25
5
(Divide both sides by 5)
y=5
Step: Substitute 5 for y in x=2y−6:
x=2y−6
x=(2)(5)−6
x=4(Simplify both sides of the equation)
За + 2b – 8а + Ь
Please help
Answers
3b-5a
Or -5a+3b if keeping in a certain order
Answer:
-5a+3b
Step-by-step explanation:
-5a+3b Combine like terms
Simplify this expression.
8.9 - 1.4x + (-6.5x) + 3.4
х
Answers
Answer:
8.9-1.4x + (-6.5x) + 3.4x
8.9-1.4x - 6.5x +3.4x
-1.4x - 6.5x = -7.9x
-7.9x+ 3.4x=-4.5x
Answer 8.9 -4.5x
Step-by-step explanation: Hope This Helps !!!
First you are going to remove the parentheses then COMBINE LIKE TERMS
Lastly you just put your equation together .
Tell whether the rates are equivalent. 0.4 kilometer for every 15 minutes 0.6 kilometer for every 20 minutes
Answers
Answer:
no they are not equivalent
Step-by-step explanation:
0.4/15 = 0.026
so for every minute they travel 0.026km
0.6/20 = 0.03
so for every minute they travel 0.03km
so they are not the same/equivalent
PLease help please i need helo on this
Answers
IIII
III
II
I
II
III
IIII
Express (x + 10)^2 as a trinomial in standard form.
Answers
Answer:
x2-20x+100
Step-by-step explanation:
You have to factor the expression in order to get your answer
Do this by expanding out the expression: (x-10)(x-10) Then factor by multiplying each of the components! Use the FOIL acronym to help you. FOIL stands for First, Outer, Inner, Last. Meaning multiply the first numbers of the expressions together, then the outers, then the inner two numbers, then the last two numbers of the expression.
Multiply x and x to get , multiply x and -10 to get -10x, multiply -10 and x to get -10x, multiply -10 and -10 to get 100. Add them all together: . Then combine like terms
The required trinomial in standard form is x²+20x+100.
Trinomial:Important information:
The expression is the [tex](x+10)^2[/tex].Using the formula [tex](a+b)^2=a^2+2ab+b^2[/tex], we get
[tex](x+10)^2=(x)^2+2(x)(10)+(10)^2[/tex]
[tex](x+10)^2=x^2+20x+100[/tex]
Therefore, the required trinomial in standard form is x²+20x+100.
Find out more about 'Trinomial' here:
https://brainly.com/question/860565
Tammy and Jay go out to dinner. Their total bill, including tax, comes out to $46.14. Once they add tip, they end up spending $53.98. What percent tip did they give? (Round to the nearest percent).
Answers
A 16-ounce package of cereal costs $4.00. What is the unit cost?
Answers
Answer:
$0.25/1oz
Step-by-step explanation:
$4.00 / 16oz = $0.25 per ounce
Answer:
The answer is D) $0.25 for every 1 oz
Step-by-step explanation:
In order to find a unit cost of something, you divide the amount of money per item, by the amount of the product. So, you divide 4/16 and get .25. Then you know already that that is the unit cost. So, every 1 oz of the product costs 25 cents. Hope this helps :)
Increase 100 by 85%
Answers
Answer:
100, percentage increased by 85% (percent) of its value = 185 Jan 16 02:56 UTC (GMT
Answer:
=100+85%
=100.85.......
A cubic foot holds about 7.5 gallons of water. A ceramic container the shape of a square pyramid has a height of 8 feet. The edges of its base measure 2.7 feet. How many gallons of water will this container hold?
Answers
Answer:
b
Step-by-step explanation:
Answer: b
Step-by-step explanation: fdfdfd
please help i need this done by tonight at midnight
Answers
Answer:
no se no mergas yo mejor te aconsejo que quemes tu libreta te encierres en tu cuarto para que tu mamá no te de un chanclaso
Plz help due tomorrow
Answers
Answer:
D, or the last option
Step-by-step explanation:
Answer:
1/2-5d
Step-by-step explanation: Commutative property you have to switch the order of the terms. Since your problem was -5d+1/2 just flip it, 1/2-5d.
Help me please I will give brainliest
Answers
I just know
How do you graph it out
Answers
Which graph shows all real numbers closer to 0 than they are to 4?
Answers
Answer:a
Step-by-step explanation:
Solve using fractional law exponent rule
Answers
Answer:
hope this help
Step-by-step explanation:
8 3/ 5 so that is the answer
Find the diagonal distance between 2,-1 -3,2 the two points given be sure to round to the nearest tenth
Answers
Answer:
[tex]d=15[/tex]
Step-by-step explanation:
From the question we are told that
Two points
[tex]x=(2,-1)\\y=(-3,2)[/tex]
Generally distance formula is mathematically given by
[tex]d=\sqrt{(x1-x2)^2(y2-y1)^2}[/tex]
[tex]d=\sqrt{(2-(-3))^2((-1)-(2))^2}[/tex]
[tex]d=15[/tex]
using the elimination method how do I find x and y for the following problem:
3x+5y=-1
x + 5y = 4
Answers
Answer:
x is equal to -3, and y is equal to eight fifths, or 1.6
Step-by-step explanation:
Solving by elimination means to add or subtract one of the equations from the other, eliminating one of their common terms.
Because both of the provided ones have the term 5y (and no other y terms), let's use subtraction:
3x + 5y = -1
- ( x + 5y = 5 )
2x + 0 = -6
Which we can solve pretty quick:
2x = -6
x = -3
We can now solve either of the original equations for y:
x + 5y = 5
-3 + 5y = 5
5y = 8
y = 8/5, or 1.6
To make sure we're correct, let's test our results in the other equation:
3x + 5y = -1
3 × -3 + 5 × 8/5 = -1
-9 + 8 = -1
-1 = -1
So we're good!
What does negative 2 over 3 > −1 indicate about the positions of negative 2 over 3 and −1 on the number line?
negative 2 over 3 is located to the right of −1
negative 2 over 3 is located on the left of −1
negative 2 over 3 is located on the right of 0, and −1 is located on the left of 0
negative 2 over 3 is located on the left of 0, and −1 is located on the right of 0
Answers
Answer:
2 to the 3rd of the queation would be around 17
Step-by-step explanation:
Answer:
-2 over 3 is located to the left of -1
Step-by-step explanation:
Solve |x+2| >5-(x-1)^2 by graphing
Answers
Answer:
x
<
−
1
or
x
>
2
Step-by-step explanation:
1. What is the sine of angle in the triangle below?
10
13
Answers
Plz help me
It's the same as the last question
Answers
Answer:
4x+4x+7x=180
15x=180
x=12
Step-by-step explanation:
Answer:
From the lines we know that that two sides are the same so the other angle is also 4x
the total of a triangle equals 180 so
4x+4x+7x=180
15x=180
x=12
Hope This Helps!!!
Is the following equation linear or nonlinear??
Answers
Write a story that could represent this math problem.
A rectangle partitioned into thirds five times. The first part, the second part, the fourth part, the fifth part, the seventh part, the eighth part, the tenth part, the eleventh part, the thirteenth part, and the fourteenth part are shaded.
Answers
Answer: Bryan had 2/3 of a chocolate bar. Four of his friends also had 2/3 of a chocolate bar. How much chocolate did they have all together?
Step-by-step explanation:
The math problem is 2/3 x 5 so if he had five people, including him. That would be 2/3 x 5
Answer: it is a
Step-by-step explanation: did when who bs ehd
Which shows the best use of the associative and commutative properties to
make simplifying 2.4 + 13 – 5 + 3.6 +7 easier?
O A. (2.4 + 13) + (-5 +3.6 + 7)
O B. (2.4 + (-5) + 13) + (7 + 3.6)
O C. (7+ 2.4 + 13) + [3.6+ (-5)]
O D. (2.4+ 3.6) + [13 +7+(-5)]
Answers
Answer:
D
Step-by-step explanation:
So the associative and commutative properties basically say That you can change the orders of the numbers and the answer won't change (for multiplication and addition).
Your answer would be D because they added the numbers with a decimal place together, it makes it easier to look at, and add in your head.
Solve the following:
a)
5x - 1 = 3x + 9
b)
2x + 4 = 6x - 16
Answers
Answer:
a = 5
b = 5
Step-by-step explanation:
WILL MARK BRAINLEST!!!!!!
What should be the first step in adding these equations to eliminate y?
8x + 3y = 2
+ 4x - 6y= -7
O A. Multiply the top equation by 4.
O B. Multiply the bottom equation by 8.
C. Multiply the bottom equation by 2.
D. Multiply the top equation by 2.
Answers
D. Multiply the top equation by 2.
Answer:
D
Step-by-step explanation:
Given the 2 equations
8x + 3y = 2 → (1)
4x - 6y = - 7 → (2)
Multiplying the top equation (1) by 2 and adding to (2) will eliminate y
16x + 6y = 4 → (3)
Add (2) and (3) term by term to eliminate y
20x + 0 = - 3
20x = - 3 ( y has been eliminated )
What is the area and perimeter of a rectangle with a width of 7 meters and a length of twice that amount?
Answers
Answer:
7x14=98
Step-by-step explanation:
formula for rectangule area= b.x so 7x(7x2)= 7x14=98
What is the value of x when g(h(x)) = 4?
Answers
Answer:4
Step-by-step explanation:
I Took the test
The value of the x in g(h(x)) = 4 is 4 if the g⁻¹(4) = 2 and at x = 4 h(x) = 2 option (C) is correct.
What is a function?It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
We have functions g(x) and h(x) shown in the figure.
g(h(x)) = 4
Taking the inverse of a function:
h(x) = g⁻¹(4)
From the set of functions g(x)
(2, 4) belongs to g(x)
(4, 2) belongs to g⁻¹(x)
g⁻¹(4) = 2
h(x) = 2
x = 4 (from the function h(x) data set)
Thus, the value of the x in g(h(x)) = 4 is 4 if the g⁻¹(4) = 2 and at x = 4 h(x) = 2 option (C) is correct.
Learn more about the function here:
brainly.com/question/5245372
#SPJ2
