Answer:
Step-by-step explanation:
tanx + cotx = secx / sinx
take left hand side
=tanx + cotx
=sinx/cosx + cosx/sinx
=sinx*sinx+cosx*cosx/sinx*cosx
=sin^2x + cos^2x/sinx*cosx
=1/sinx*cosx
=1/cosx * 1/sinx
=secx/sinx
at second last step i changed multiplication sign into divide sign and write the reciprocal of 1/sinx which is sinx.
A random sample of 18 adults, chosen from the 1500 adults in the town, took a survey asking their opinion on a recent property tax change. 25% of those who responded said they were in favor of the change. The company running the survey wants to construct a confidence interval estimating the proportion of all adults in the town who support the change. Which of the conditions for inference have been satisfied?
Answer: Random condition
10% condition
Step-by-step explanation:
The conditions for inference that have been satisfied will be:
• Random condition: This has been satisfied since a random sample of 18 adults were taken from 1500 adults.
• 10% condition: Since 25% of those who responded said they were in favor of the change, then the 10% condition is satisfied.
Help me plzz i beg u
Answer:
Step-by-step explanation:
solv this for T
1/5t + 2- ( ) = 17- ( ) 1/5t = ( ) × 1/5t= ( ) t =
Answer:
t = 5?
Step-by-step explanation:
Factor to write an equivalent expression.(What is the Greatest Common Factor?).
−9x+15y
Answer:
GCF is 3
Step-by-step explanation:
Given the expression -9x + 15y
First, we need to find ther individual factors
-9x = -3 *3 * x
15y = 3 * 5 * y
Since 3 is common to both factors
−9x+15y = 3(-3x+5y)
Hence the GCF is 3
I GIVE BRAIN LEST Which of the following is true about an
estuary?
It is all fresh water.
It is all salty water.
It has very few organisms.
It is affected by tides.
==========================================================
Explanation:
An estuary is where a river pours into the ocean. So that means fresh water mixes with salt water here. This allows us to rule out choices A and B.
According to NOAA, their site says "Estuaries are one of the most productive ecosystems in the world, so there is a great diversity of animals and plants that live there". In other words, a lot of plants and animals live here, so we can rule out choice C.
Choice D is the answer because tides do affect estuaries. This is simply because the ocean is pretty much right next to it, or attached to it. So it's expected that a high tide would cause the water level in an estuary to increase.
Answer:
it is affected by tides that's the conclusion I have come to
Distributive property of 2x(7+4)
[tex]22[/tex] ✅
[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}[/tex]
[tex]2\times(7 + 4) \\ = 2 \times 11 \\ = 22[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}[/tex]
MEASUREMENT AND GRAPHS
Introduction to elapsed time
Pablo started baking at 7:46 AM and finished at 8:25 AM.
How long did it take him? Give your answer in minutes.
X Х
6
?
Consider the division of 8y2 - 12y + 4 by 4y.
What are the values of a and b?
8y? - 12y+4
4y
872
4y
- 12V +
+
4
47
4
= a +b+
O a = 2y and b = 3
O a= and b = -3y
O a = 2y and b = -3
O a- } a
o a= 2 and b = 3y
Answer:
Step-by-step explanation:
Notice that the dividend has tree terms with , , c
Now, to divided our dividend by the monomial (single term) , the easiest thing to do is divide each term of the dividend by the monomial:
÷ =
After performing the division we get that now and
We can conclude that the correct answer is a = 2y and b = –3
what is 15 minutes before 4:35? what time would that be? pls answer today!!!
Answer:
4:20
Step-by-step explanation:
35-15= 20
Answer:
4:20
Step-by-step explanation:
A triangle PQR is right angled at R, with PQ=80cm and R=60cm. find QR?
Step by step PLS PYTHAGORUS THEOREM
Answer:
Solution given:
A triangle PQR is right angled at R, with hypotenuse{h}PQ=80cm
and
base[b]PR=60cm.
perpendicular [P]= QR
by using Pythagoras law
h²=p²+b²
80²=QR²+60²
QR²=80²-60²
QR=[tex]\sqrt{2800}[/tex]
QR=20[tex]\sqrt{7}[/tex]=52.9=53cm
QR=53cm.
help help help help need to pass this
Answer:
0.25
Step-by-step explanation:
t/4+16=17
t=(17-16)/4
=0.25
I need help
A
B
C
D
?
Answer:
Step-by-step explanation:
i say a
PLSSS HELP 50 POINTS AND BRAINLIEST IF U R RIGHT HELP PLSSSSS
2. What is the product of 1/2x-1/4 and 5x^2-2x+6?
(a) Show your work.
(b) Is the product of 1/2x-1/4 and 5x^2-2x+6? equal to the product of 1/4x-1/2 and 5x^2-2x+6? ? Explain your answer
Answer:
1/2x - 1/4 * 5x^2 - 2x + 6 = 116/4 = 29
A. Work : 1/2x = 2/4x - 1/4 = 1/4x
5x^2 = 25 - 2x = 23x + 6 = 29x
1/4x * 29x = 1/4x * 116/4x = 116/4x = 29
B. 1/4x - 1/2 * 5x2 - 2x + 6 = -29
No, it is not equal to the product up above
Because its basically the same thing but the 1/2 and 1/4x
are switched which makes it negative
Hope it helps
20% of which number is 30?
A. 1.5
B. 6
c. 15
D. 150
E. 600
D. 150 is the correct answer
find the diameter of a circle with the circumference of 10cm
help me ill give u 11 points if u do this for me !!!
Answer:
I believe it's the third and fourth answers.
Step-by-step explanation:
hi! i’ll give brainliest please help
Answer:
Water flow becomes slower when it river bends
Step-by-step explanation:
Deposition occurs when a river loses energy.
Answer:
Once the river bends the flow of water reduces and sediment begins to build up. so I would say A
The probability it will rain in the next two weeks is 1/9 for this week and 1/5 for next week. What is the probability that it will rain this week and then rain next week?
Answer: 1/45
Step-by-step explanation:
The probability that it will rain this week and then rain next week will be the multiplication of the both the probability that it'll rain this week and probability that it'll rain next week.
Therefore, the answer will be:
= P(rain this week) × P(rain next week)
= 1/9 × 1/5
= 1/45
Therefore, the answer is 1/45.
This is second one! Its easy......pls I need all answers.....
Answer:
4. - 3
5. 5 / 11
6. - 2
Step-by-step explanation:
4.
9 / x = - 3
x = 9 / - 3
x = - 3
5.
11 = 5 / x
x = 5 / 11
6.
- 2 = 4 / x
x = 4 / - 2
x = - 2
how do i find the unit rate?
Answer:hgfjiughhitfi
Step-by-step explanation:
R5ztrxtfchhgtu
what is the volume in cubic cm of a cylinder with a height of 16 cm and a base radius of 3cm to the nearest tenths place
Step-by-step explanation:
[tex]\pi {(3)}^{2} (16) \\ \pi(9)(16) \\ 144\pi = 452.4 {cm}^{3} [/tex]
if x + 1/x = 2. find the value of x³ + 1/x³.
Answer:
2
Step-by-step explanation:
x + 1/x = 2
x + 1 = 2x
x = 1
x³ + 1/x³
1³ + 1/1³.
1 + 1/1 = 1 + 1 = 2
PLZZZ HELPPPP!!!!
For each of the following statements, create a data set that makes the statement true. Each data set should have at
least 10 data points. For each data set, calculate the mean and the median and construct a boxplot.
a. For one data set, the mean is much less than the median.
b. For one data set, the mean is much greater than the median.
c. For one data set, the mean and median are about the same.
A dance group from Round Rock High School is fundraising to travel to a competition. The competition entry fee is only $300 for the entire group, but plane tickets will cost $100 per students. If there are 30 students how much will each student have to fundraise?
Answer:
$30.00 i think?
Step-by-step explanation:
$100 x 30 = $30.00
picture, will give brainliest if its correct!!
Answer: the answer is 100
Step-by-step explanation:
HELPPP 21 POINTSS
MARKS BRAINLEST IF CORRECT
Answer:
3 or the 3rd one from the top
Step-by-step explanation:
Since after 8 minutes it wasn't cooked enough he put it in for more time. So that means the arrow should be pointing to more time. But the circle isn't filled in because it is more than 8 minutes.
Jane is playing basketball. After a series of 20 shots, Jane had scored 55% of the time. Five shots later, her scoring rate had increased to 56%. On how many of the last five shots did she score
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
Mrs. Hector is renovating a house. The living room is a rectangle 10 feet long and 15 1/2 feet wide. Mrs. Hector wants to put in new flooring in the living room. Flooring is sold by the square foot for $6.25. How much flooring does she need and how much will it cost? Area = length x width
Answer:
Flooring: 155 | Cost: 968.75
Step-by-step explanation:
10 x 15 1/2 = 155
then multiply the 155 with the 6.25
you will get 968.75
so the cost is $968.75
- The town development committee is making a dangerous intersection into a four-
way stop. The stop signs are regular octagons with each side measuring 32
centimeters. The apothem of the sign is approximately 38.63 centimeters long.
About how many square meters of metal will be needed for all 4 stop signs? Round
your answer to the nearest thousandth.
Answer: 1,000
Step-by-step explanation:
38.63 x4= 154
B
[2 0]
-2 5
What is the determinant of B?
Your answer
Answer:
10
Step-by-step explanation:
Determinant = ad - bc
[tex]\det\begin{pmatrix} 2 & 0 \\-2 & 5\end{pmatrix} =\begin{vmatrix} 2 & 0 \\-2 & 5\end{vmatrix} = 2\times5 + 0\times2 = 10[/tex]