Use property...
cot(a+b)=cot a cot b - tan a tan b
a=x b=pi/2
Left side --> cot x+pi/2)=cot x cot (pi/2) - tan x tan (pi/2)
= cot x * 0 - tan x * 1
=0 - tan x
=- tan x
= Right side
I may or may not be dumb in the brain... I'll give brainliest to whoever answers first and correctly.
Answer:
23 degrees
Step-by-step explanation:
6x + 42 = 180
x = 23
Answer:
23 Degrees
Step-by-step explanation:
6x + 42 = 180
-42. -42
6x = 138
/6. /6
× = 23
Two-third of Leon's tropical fish in his tank is equal to one-fourth of harry's tropical fish in his tank Find the ratio of the no. Of Leon's tropical fish to the no. Of harry's tropical fish What fraction of the number of harry's tropical fish is the number of Leon's tropical fish
Answer:
L : H Ratio = 3 : 8 , L as a fraction of H = 3/8
Step-by-step explanation:
Let the no. of Leon's tropical fish be = L
Let the no. of Harry's tropical fish be = H
Given : 2/3 L = 1/4 H
L / H = 1/4 (3/2)
L : H = 3 : 8
Let total fishes or common ratio = x
L = 3/11 (x) , H = 8/11 (x)
Fraction L / H = [ 3/11 (x) ] / [ 8/11 (x) ]
L / H = 3/8
{(-3, 2), (-2, 2), (1, 2), (-3, 1), (0, 3)}
Dom:
Range:
Function?
Answer:
The domain of R is {-3,-2,1,-3,0}
The range of R is: {2,1,3}
The relation R is not a function
Step-by-step explanation:
Relations and Functions
We are given the ordered pairs of a relation, let's call it R:
R={(-3, 2), (-2, 2), (1, 2), (-3, 1), (0, 3)}
The domain of R is the set of values that relate to 1 or more elements from the range.
The domain of R is {-3,-2,1,-3,0}
The range of R is: {2,1,3}
Note the value 2 is repeated in the second set, but it's reported only once as part of the Range.
A relation is a function if each element of the domain appears in only one ordered pair, or relates to a single element in the Range.
The relation R is not a function, because the ordered pairs (-3, 2) and (-3, 1)
map the element -3 twice.
75
To go on a fairground ride, you must be at least 5 feet tall. Express this as an inequality.
A. A) h<5
B. B) hs5
C. C) h>5
D. D) h25
Select an answer
Sam makes $10.25 per hour working at Whataburger. He plans to buy a laptop for $550. Write and solve an inequality describing how
many hours h Sam will have to work to be able to buy the laptop. (Round to the next higher hour)
Answer:
53.658
Step-by-step explanation:
30 divided by what gives you 6
Answer:
5
Step-by-step explanation:
[tex]30 \div 5 = 6[/tex]
Can someone help please?
Answer:
just substitute the numbers for the variable y, and see whichs are greater than or less than 6
Answer:
1
Step-by-step explanation:
13 - 7(-1) = 20 so no
13 - 7(0) = 13 so no
13 - 7(1) = 6 so yes
[is there a 2 there?] 13 - 7(2) = -1 so no
13 - 7(3) = -8 so no
what is the first word
I don't understand the question......
Answer:
Step-by-step explanation:
According to Wiki answers, the first word ever uttered was “Aa,” which meant “Hey!” This was said by an australopithecine in Ethiopia more than a million years ago
Which definitions describe context? Check all that apply.
words that can give me clues to the meaning of an unknown word
words or ideas inside an unknown word
words or ideas around an unknown word
words that I do not know
words or ideas that are easy to understand
Answer: Words that can give you clues to the meaning of an unknown word
Step-by-step explanation:
Answer:
A and CStep-by-step explanation:
I just answered that question and i got it right. Have a great day :)Sarah deposits $500 into a bank account earning 2% interest per year. The amount
(A) of money in the account at any time (t), in years, is represented by the equation
A (t) = 500(1.02)
Which best describes the equation in words?
A. The amount of money present in the account at any time is a product of 500 and a
power of 1.02.
B. The amount of money present in the account at any time is a power of 500 and a
product of 1.02.
C. The amount of money present in the account at any time is a sum of 500 and
apower of 1.02
D. The amount of money present in the account at any time is a power of 500 and a
sum of 1.02
Answer:
c
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
2/100*500=10
product is 500 and power is 1.02
What is energy of an electron with frequency of 5.25 x 10^14 s-1?
Answer:
3.48*10^-19
Step-by-step explanation:
We have the equation E = hf where h is planck's constant = aroung 6.63*10^-34 and f = frequency. We can then plug in the values and get the answer above.
HELP AGAIN PLS
THX BRAIN
Answer:
last 3 are right
Step-by-step explanation:
Answer:
Answer option 2, 3 and 4.
solve this question now
Answer:
Center is (1,5) ;Radius is the square root of 13
What is AB? Round your answer to the nearest hundredth
Answer:
A is -3 units B is 3 units which mean -3 + 3= 0
Step-by-step explanation:
2. What is the equation of a line that is passing through the point (8,11) and is perpendicular to y=2x+1.
Answer:
u need to substitute (8,11) in the equation because the line passses through that point
Isabella ran the 100-meter dash five times. The time it took her to complete each race, in seconds, was 12.7, 12.807, 12.78, 12.08, and 12.087.
Isabella wants to order the race times from her slowest time to her fastest time. Sort the decimals in order from greatest to least.
Given:
Number of 100-meter races = 5
The time it took Isabella to complete each race, in seconds, was 12.7, 12.807, 12.78, 12.08, and 12.087.
To find:
The decimals in order from greatest to least.
Solution:
The time it took Isabella to complete each race, in seconds, was shown below:
12.7, 12.807, 12.78, 12.08, 12.087
We need to arrange this data in descending order.
In all 5 numbers the digits before decimals are same. On comparing the digits on the tenth place and hundredth place, we get
12.807 > 12.78 > 12.7 > 12.087 > 12. 08
Therefore, the required order of given data is 12.807, 12.78, 12.7, 12.087, 12. 08.
The paraboloid z = 3 − x − x2 − 2y2 intersects the plane x = 1 in a parabola. Find parametric equations in terms of t for the tangent line to this parabola at the point (1, 3, −17). (Enter your answer as a comma-separated list of equations. Let x, y, and z be in terms of t.
Answer:
the required parametric equation is:
x = 1
y = t + 3
z = -12t - 17
Step-by-step explanation:
From the given information:
We are to express x,y, and z in terms of t.
The purpose of this question is to find the parametric equations in terms of t.
Given that the tangent line related to the parabola is the point (1,3, -17)
Provided that the paraboloid z = 3 - x - x² - 2y² intersect the plane x = 1 in a paraboloid; then:
z = 3 - 1 - (1)² - 2y²
z = 1 - 2y²
Suppose y = t, then the parametrization is given by:
(x (t), y(t), z(t) ) = (1, t, 1 - 2t²)
(x' (t), y'(t), z'(t) ) = (0,1, -4t)
At the point (x,y,z) = (1,3, -17)
For t (=y) = 3
Hence, (x'(3),y'(3),z'(3)) = (0,1, -12)
Therefore, the equation of the tangent line can be expressed as:
[tex]\dfrac{x-1}{0}=\dfrac{y-3}{1}=\dfrac{z-(-17)}{-12}=(t)[/tex]
x - 1 = 0, y -3 = t, z + 17 = -12t
x = 1, y = t + 3 , z = -12t - 17
Thus, the required parametric equation is:
x = 1
y = t + 3
z = -12t - 17
A restaurant has two different seating options: a table and a family booth. A table can seat 4 people, and a family booth can seat 10 people. The restaurant has a maximum capacity of 242 people. If the restaurant has 19 family booths, which inequality could be used to find t, the number of tables in the restaurant?
Answer: 242 = 190 + 4t
Step-by-step explanation:
You know that the maximum capacity of the restaurant is 242 people, meaning that at most there can only be that many customers seated at that time. Normally, the equation would be 242 = 10b + 4t, but since you already know the number of booths, your work is cut in half, giving you 242 = 10(19) + 4t. The equation would be this because you have the capacity being equal to the number of tables x the number of people at each table and the number of booths x the number of people seated at each of them.
PLEASE can anyone help me with this problem??
9514 1404 393
Answer:
4
Step-by-step explanation:
To find the value of g(7), locate 7 on the x-axis. Follow the grid line upward until it meets the graph (blue line). At that point, follow the grid line to the left until it meets the y-axis. Read the value from the scale on the y-axis.
g(7) = 4
f+3≥20 or f+15≤7
Solve for f
Answer:
Your answer is:
1) f >= 17
2) f <= -8
Step-by-step explanation:
Hope this helped : )
Given the equation of a linear function in standard form 2x + 3y = 12, solve for y. Select all that apply
Graph the line with the slope of 3/5 and goes through the point (1,2)
Answer:
Here's a screenshot of the correct line:
The line with the slope of 3/5 and goes through the point (1,2) is y = 3/5x + 7/5
The equation of a straight line is given by:
y = mx + b
where y, x are variables, m is the slope of the line and b is the y intercept.
Given the line has a slope of 3/5 and goes through the point (1,2). The equation of the line is given by:
[tex]y-y_1=m(x-x_1)\\\\y-2=\frac{3}{5}(x-1)\\\\y-2=\frac{3}{5}x-\frac{3}{5} \\\\y=\frac{3}{5}x+\frac{7}{5}[/tex]
Hannah makes $1,500 per month. She spends $450 on groceries and
eating out. What percentage of her budget is spent on food?
PLEASE HELP, ASAP!!!! eighth grade math. please don’t skip i’ve been trying to keep repost this so i can get an answer:(
What is the largest integer value of n for which 3√ n is less than √ 200? Be sure to explain how you got your answer.
Step-by-step explanation:
[tex]3 \sqrt{n} < \sqrt{200} \\ \sqrt{n} < \sqrt{200} \div 3 \\ \sqrt{n} < \sqrt{200 } \times \sqrt{1 \div 9} \\ \sqrt{n} < \sqrt{200 \times (1 \div 9)} \\ \sqrt{n } < \sqrt{22} \\ n < 22 \\ n = 21[/tex]
200/9=22.22222
so i took the nearest number 22 just to make it easy. I think there is no problem.
1. Convert this fraction into a decimal 1/4
Answer:
.25
Step-by-step explanation:
take 100 and divide it by 4. you get 4 25s. so its .25
Answer: 0.25
Step-by-step explanation:
Sam drove 315.5 miles in 5 hours. If he drove the same number of miles each hour, how many miles did he drive per hour?
Answer:
63.1
Step-by-step explanation: You divide 315.5 by 5 to get the answer
Answer:
Step-by-step explanation:
it should be 315.5 or since it is and a 5 all you have to do is multiply it easy hope this helped :)
What statments are correct? Check all that apply.
Answer:
what is the statements?
Step-by-step explanation:
Well I don't know the answer so help me please :p
Answer:
I'd say 66
Maybe 22/3
Step-by-step explanation:
round 314,759 to the number of the underlined digit
Answer:
Um I think that it might be 315,000 if that's what they mean
PLEASE HELP!!!! help me solve 4 and 5
Answer:
1 is 87 and 2 is 93
Step-by-step explanation:
idrk exactly how to explain it....but i'll try....
the 87 is part of a straight angle, so the one to the left of it, that angle is 93.
1 is diagnoly oppisite of the 87, so 1 is 87. 2 is diagnoly oppisite of the other part of the striaght angle(93), so its 93