Which equations could be used to solve for the unknown lengths of △ABC? Check all that apply.
sin(45°) = StartFraction B C Over 9 EndFraction
sin(45°) = StartFraction 9 Over B C EndFraction
9 tan(45°) = AC
(AC)sin(45°) = BC
cos(45°) = StartFraction B C Over 9 EndFraction
Answers
Applying the trigonometric ratios, the equations that can be used are:
sin 45 = BC/9
cos 45 = BC/9
How to Apply the Trigonometric Ratio?In the given image below, to find the unknown lengths of the triangle, we would apply the following trigonometric ratios:
To find AC, use the cosine ratio, CAH.
To find BC, use the sine ratio, SOH.
sin 45 = opp/hyp = BC/9
sin 45 = BC/9
cos 45 = adj/hyp = BC/9
cos 45 = BC/9
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Answer: A, E
Step-by-step explanation: Sin(45)=BC/9 ; cos(45)=Bc/9
Related Questions
Show that the line 3y = 7 + 5x is perpendicular to the line 5y = 4 - 3x.
Answers
Answer:
Proven Below
Step-by-step explanation:
If we rearrange these equations, we get that 3y = 5x + 7 and that 5y = -3x + 4. Next, to find what y equals on both equations, we divide by 3 on both sides of the first equation, where we would get that y = 5/3x + 7/3, and then divide by 5 on both sides of the second equation, where we would get that y = -3/5x + 4/5. Now, to see if two lines are perpendicular to each other, we have to see if the slopes (The number being multiplied by x. Ex.) In the equation y = 3/4x + 4, the slope is 3/4) are opposite reciprocals (If you multiply them and they are equal to -1. Ex.) 3/4 * -4/3 is equal to -1, so they are opposite reciprocals). In this case, we have -3/5 and 5/3 as slopes, and -3/5 * 5/3 is equal to -1, so they are perpendicular.
Answer:
The slope of the first line is 5/3
The slope for the second one is -3/5
If you multiply the 2 slope you have to end up with - 1
So 5/3*(-3/5)=-15/15 which is - 1
So yes the lines are perpenducular
porfis ayúdenme es para hoy
Answers
Answers:
1. V=triangle area × length
V=1/2×8×12×20
V=960in³
2. triangle area × length
Area of the triangle=1/2×4×11
A=22ft²
V=22×6
V=132ft³
3. b, volume always have cubic power (³)
4. d, same reason of question 3
can someone tell the answers?
Answers
Answer:
IT B
Step-by-step explanation:
BECAUSE IT B
Answer:
A. B and D
Step-by-step explanation:
A because: X can be the minutes she goes over
B because: X can be the customers coming in for breakfast
D because: X can be every ticket
it can't be C because you would take away the eggs not add
what is the answer to this problem if you need to find out the area?
Answers
Answer:
17.28in
Step-by-step explanation:
To find the area of a triangle, multiply the base by the perpendicular height (the length from the point opposite the base, to the base, which makes a 90-degree angle with the base), and half it:
7.2*4.8=34.56
34.56/2=17.28
a line passes through the points (4,23) and (8,27). write a linear funtion rule in terms of x and y for this line
Answers
Answer:
Step-by-step explanation:
(27 - 23)/(8 - 4)= 4/4= 1
y - 23 = x - 4
y = x + 19
The bag has 2 yellow cubes, 5 green cubes, and 3 red cubes. Without replacing the yellow cube, what is the probability of selecting a red cube at random?
Answers
Can you help me please
Answers
Answer:
D?
Step-by-step explanation:
if i got it wrong im truly sorry
Which expressions are equivalent to 8(-10x+3.5y-7)? Select two options.
Answers
Answer:
[tex] - 8x + 120y - 56[/tex]
Step-by-step explanation:
evaluate the power calculate
[tex]8(1 x + 3 \times 5y - 7[/tex]
the coefficient of 1 doest have to be written but keep the sign
[tex]8( - 1x + 15y - 7[/tex]
remove the parentheses
If f(x) = x2, and
g(x) = x - 1, then
f(g(x)) = ?
Answers
Answer:
f(g(x))=1x^2 +-2x+1
Step-by-step explanation:
your inputs should be
1
-2
1
If f(x) = [tex]x^{2}[/tex], g(x) = [tex]x -1[/tex] then f(g(x)) = [tex]1x^{2} -2x+1[/tex].
What is a function?Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
Given
f(x) = [tex]x^{2}[/tex]
g(x) = [tex]x -1[/tex]
f(g(x)) = [tex](x-1)^{2}[/tex]
It is in the form of [tex](a-b)^{2}=a^{2} -2(a)(b) +b^{2}[/tex]
= [tex]x^{2} -2(x)(1) +1^{2}[/tex]
= [tex]x^{2} -2x+1[/tex]
f(g(x)) = [tex]1x^{2} -2x+1[/tex]
Hence, If f(x) = [tex]x^{2}[/tex], g(x) = [tex]x -1[/tex] then f(g(x)) = [tex]1x^{2} -2x+1[/tex].
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HELP PLEASE!! WILL GIVE BRAINLIEST!!!
Answers
The slope is 5/7
Step-by-step explanation:
When you find slope you need to find both points and use the ordered pairs and subtract y1 - y2 and x2 - x1 and then you get your slope which is 5/7
sorry im bad at explaining
B. 13 (x - 10) = -4
Answer: x =
Its a neg #
Answers
you have to distribute the 13 to x and -10 which gives you 13x-130=-4 then you add 130 to -4 because your going over the equal sign and it gives you 126 next you divide 126 by 13 which gives you 9.69
Jada sister Earns a commission. She makes 3.5 of them out she sells. Last week she sold, 7000 Worth of furniture. How much was her commission?
Answers
Answer:
$245
Step-by-step explanation:
3.5% of 7000 = 0.035 × 7000 = 245
AYO HELP A MAN OUT PLEASE
Answers
Answer:
I think it's A I'm not sure tho
Step-by-step explanation:
the answer is A and I think C I don't know though ur welcome!:)
Assume that the lines are parallel.
Answers
Answer:
left ?= 110
right?= 70
Step-by-step explanation:
Choose the two number sentences that are true.
A. 5+7= 11+2
B. 3 + 3 = 20 - 9
C. 5+9 = 19 - 4
D. 12 +7 = 5 + 14
E18 - 6 = 15 - 1
Answers
Answer:
D
because 12+7=19
5+14=19
An airplane on autopilot took 9 hours to travel 6,471 kilometers. What is the unit rate for kilometers per hour?
Answers
Answer:
719 kilometers
Step-by-step explanation:
6,471/9 = 719
that's the unit rate
Answer:
719
Step-by-step explanation:
6,471/9=719
719*9=6,471
which means the correct answer is 719
YW!!
You purchased a car for $56,843. After
one year, the car is worth $51,474. How
much is the car worth in 4 years?
Answers
Answer:
$35,367
Step-by-step explanation:
Given the following data set: 111, 122, 133, 149, 126, 117, 101, 121
Find the values of the upper and lower quartiles.
Answers
Answer:
the upper is 149
and the lower is 101
Step-by-step explanation:
sana makatulong
why is it so hard like math in general is hard has been for years
Answers
Answer:
Tell me about it..
Step-by-step explanation:
Step-by-step
explanation:
math is hard because is hard
Enter the value of n so that the expression (3y + 1) + (2y + 8) is equivalent to (ny + 9).
Answers
Answer:
Step-by-step explanation:
3y+1+2y+8=ny+9
5y+9=ny+9
5y=ny
n=5
Please help will give brainliest!
Answers
Answer:
Should be 1 if im not wrong Then Mark Me brainliest
Step-by-step explanation:
a negative times a neg equals a posative
Neg x pos = neg
pos x neg = neg
pos x pos = pos
neg x neg = pos
so if there greater then over neg<, >,=
You would look at the problem for given f(x)=
x → -1 and neg times neg more or less
-1 x -1 = 1
-30=5(x+1) x=?
please help
Answers
Answer:
x = -7
-30 = 5(x + 1)
5(x + 1) = -30
5(x + 1)/5 = -30/5
x + 1 = -6
x + 1 - 1 = -6 -1
x = -7
Help meh ill mark 1 and 1/2 +2/5 PLZZZZZZZZZZZZZZZZ
Answers
Answer:
1 9/10
Step-by-step explanation:
If you did not learn a different method for unit conversion in a previous class, respond to the following statement.
Explain how to use the unit-factor method to convert 120 pounds to kilograms.
Hint: 1 kilogram=2.2 pounds
To write the unit factors, use the / symbol, like this: 1 gallon/3.79 liters.
Answers
Answer:
120 pounds = 54.5 kilogram
Step-by-step explanation:
We know that,
1 kilogram=2.2 pounds
or
1 pound = (1/2.2) kilogram
We need to convert 120 pounds to kilograms.
[tex]120\ \text{pounds}=\dfrac{120}{2.2}\ \text{kilogram}\\\\=54.5 \text{kilogram}[/tex]
So, there are 54.5 kilograms in 120 pounds.
X and Y
-5x+5y=-25
3x+2y=10
the X and Y is (4,-1) i need to know how to get the answer
Answers
Step-by-step explanation:
just substitute X and Y by their numerical values.
a) -5(4)+5(-1)=-25
-20-5= -25
-25= -25. true
b) 3(4)+2(-1) = 10
12 -2 =10
10=10. true
At Franklis Incorporated, during the month of January, the direct labor rate variance was $3,000 unfavorable, and the direct labor efficiency variance was $5,000 favorable. Actual direct labor costs during January were $100,000. What was the standard direct labor applied to production at Franklis during the month of January?
Answers
Answer:
50
Step-by-step explanation:
Direct labour rate variance is $3,000
Direct labour efficiency variance is $5,000
Actual direct labour costs is $100,000
Therefore the standard direct labour production during the month of January can be calculated as follows
= 100,000/5,000-3,000
= 100,000/2,000
= 50
Rizwan has 100 ruppees . He spent rs 25 in ice cream . Rs 45 on pizza, and the rest on other things . What percantage did he spend on other things .
Answers
Answer:percantage spent on other things = 30%
Step-by-step explanation:
Percentage spent on other things = Money spent on other things/ Total money x `100/ 1
Money spent on rest things = Total money - ( Money spent on ice cream + Money spent on pizza)
100 -(25+ 45)
100-70= Rs 30
Percentage spent on other things = Money spent on other things/ Total money x `100/ 1
= Rs 30/ Rs 100 x 100
0.3 x 100 = 30%
A batch of 26 television sets are being checked by two supervisors. Both start from the same end. One supervisor checks every
2nd set and puts a blue mark on it. Another supervisor checks every 3rd set and puts a green mark on it. How many television
sets will have BOTH a blue and a green mark on them
Answers
Answer:
4
Step-by-step explanation:
Total number of television sets = 26
With the condition given that; every 2nd set had blue mark on it, and every 3rd set had green mark on it.
The number of only blue marked set is 8, while the number of only green marked set is 4.
So that, the number of television sets with both blue and green mark on them is 4.
if you can help me i’ll make brainliest
Answers
Answer:
help me
Step-by-step explanationok so
Answer:
pts
Step-by-step explanation:
a tree is broken at a height of 6 cm from the ground and its top touches the ground at a distance of 8cm from the base of the tree . find the original height of the tree pls do to step to step explaination
Answers
Answer:
I guess its 16
Step-by-step explanation:
Because
Hieght =6cm
Base = 8cm
Hypotenuse=?
by pythagoras formula = a^2+b^2=c^2
6 *6 + 8*8 =c^2
36 + 64 = c^2
100 =c^2
Root of 100 is 10
so the whole tree is = to 10 +6 =16