Step-by-step explanation:
step 1. a diagram is important and can be uploaded. you will get a quicker answer with a diagram
step 2. triangle RST is a right triangle so we can use trigonometry to find <S
step 3. the adjacent side of <S is ST and the hypotenuse is RS so we will use cos
step 4. cosS = adj/hyp = ST/RS = 2.7/4.9
step 5. <S = 56.6° using inverse cos.
Answer:
42.43
Step-by-step explanation:
This is because you had to divbide by 3
ben positions his ladder against a wall so that the top of the ladder is 15 feet above the ground. about how long is his ladder?
A. 16.2 feet
B. 18.6 feet
C. 10.5 feet
D. 21 feet
Answer: 16.2 ft
Step-by-step explanation:
Using the Pythagorean theorem, if we let the length of the ladder be x,
[tex]6^{2}+15^{2}=x^{2}\\\\261=x^{2}\\\\x=\sqrt{261} \approx \boxed{16.2 \text{ ft}}[/tex]
Part C
What are the y-intercepts for function I and function Il?
Answer:
the relation is a function, determine whether the function is ... to y = 2x + 2 a. Il slope = 2 b. ... Change to the slope- intercept form: (show work below) -_y 2x+1. 4- 5= 2(x+3).
In an agricultural experiment, the effects of two fertilizers on the production of oranges were measured. Thirteen randomly selected plots of land were treated with fertilizer A, and 8 randomly selected plots were treated with fertilizer B. The number of pounds of harvested fruit was measured from each plot. Following are the results.
Fertilizer A
445 510 464 472 441 480 403 460 448
457 437 505 417
Fertilizer B
398 380 368 393 424 387 378 415
Required:
Construct a 95% confidence interval for the difference between the mean yields for the two types of fertilizer.
Answer:
The 95% confidence interval for the difference between the mean yields for the two types of fertilizer is approximately 92.5536 pounds < [tex]\bar{x}_{1}- \bar{x}_{2}[/tex] < 35.39 pounds
Step-by-step explanation:
The harvest from each plot treated with fertilizer A and fertilizer B are presented as follows;
Fertilizer A
445, 510, 464, 472, 441, 480, 403, 460, 448, 457, 437, 505, 417
Fertilizer B
398, 380, 368 393, 424, 387, 378, 415
The number of trials of fertilizer A, n₁ = 13
The number of trials of fertilizer B, n₂ = 8
The confidence level = 95%
α = 1 - 0.95 = 0.05
∴ α/2 = 0.025
The degrees of freedom, df = 8 - 1 = 7
[tex]t_{\alpha /2}[/tex] = 2.365
From Microsoft Excel, we get;
The standard deviation of the pounds of harvested fruits for the plots treated with fertilizer A s₁ = 30.71603
The mean of the pounds of harvested fruits for the plots treated with fertilizer A, [tex]\overline x_1[/tex] = 456.8462
The standard deviation of the pounds of harvested fruits for the plots treated with fertilizer B s = 18.99201
The mean of the pounds of harvested fruits for the plots treated with fertilizer B, [tex]\overline x_2[/tex] = 392.875
The 95% confidence interval, C.I. for the difference between the mean yields for the two types of fertilizer can be constructed with the following formula
[tex]C.I. = \left (\bar{x}_{1}- \bar{x}_{2} \right )\pm t_{\alpha /2} \cdot \sqrt{\dfrac{s_{1}^{2}}{n_{1}}+\dfrac{s_{2}^{2}}{n_{2}}}[/tex]
By variable substitution, we get;
[tex]C.I. = \left (456.8462- 392.875 \right )\pm 2.635 \times \sqrt{\dfrac{30.71603^{2}}{13}+\dfrac{18.99201^{2}}{8}}[/tex]
The 95% confidence interval for the difference between the mean yields for the two types of fertilizer [tex]C.I. \approx 63.9712 \pm28.5824[/tex], which can be expressed as 92.5536 lbs. < [tex]\bar{x}_{1}- \bar{x}_{2}[/tex] < 35.39 lbs.
Which expression is equivalent to ?
Find the errors and correct the following mathematical sentences.
Answer:
This is your answer ☺️☺️☺️
The scientist measured the wingspans of another random sample of hawks in the national park. There were 100 hawks in the sample, and the number of hawks in the park is about 2,750. There were 82 hawks in the random sample that had a wingspan less than 50 inches. Which value best estimates the number of hawks in the national park that have a wingspan less than 50 inches?
Answer:
Step-by-step explanation:
a
Giving everything. Plzz help.
The answer in this picture is B(143)
Answer:
A
Step-by-step explanation:
180 _80 =100
180_65= 115
180_72 = 108
Then :
108 + 115 + 100 = 323
Then :
360 _ 323 = 37
Then :
180 _37 = 143
X _7 =143
X =150
To pour the concrete sidewalk shown in the figure, approximately how many cubic feet of topsoil will you need to remove for the 4"-thick sidewalk if the owner wants the finish surface of the sidewalk to be level with the adjacent topsoil? ROUND YOUR ANSWER TO THE NEAREST CUBIC FOOT. _____ cu ft
Answer: 109 cu ft
Step-by-step explanation: had it on a test
What is the answer i need helppp
48 ÷ 2(9 + 3)
Answer:
288
Step-by-step explanation:
Answer:
288
Step-by-step explanation:
I just did the math
The answer was 288
someone please help me with this
Answer:
x= y/10
Step-by-step explanation:
recheck ans:
(2)= y/10
20= y
Can someone please help?
In a newspaper, it was reported that yearly robberies in Springfield were up 40% to 154 in 2012 from 2011. How many robberies were there in Springfield in 2011?
Answer:
110
Step-by-step explanation:
The inverse of 7/5 is 5/7
5/7 times 154 equals 110
Translate this sentence into an inequality:
Five subtracted from c is less than −17
Answer:
-17 < c < 5
Step-by-step explanation:
I think that's the answer
I can't confirm anything
What’s the answer and how to get it done without me
Answer:uhmmmmm
Step-by-step explanation:
16 cans of soda. Two-eights of the cans are sprite. How many Sprites?
The answer is that there are 4 sprites. Because eight is half of sixteen so i add the numerator together and 2+2=4
1) How many ink cartridges can you buy with 77 dollars if one cartridge costs 11 dollars ?
What is the area of the shaded region Gena will tile?
*WILL MARK BRAINLIST*
Answer:
the answer should be 74cm^2
Step-by-step explanation:
1.36105 redondeó hasta las décimas
Answer:
Step-by-step explanation:
hola agradable para conocerte la respuesta a esta pregunta es 136105 esperanza que ayuda a marcar como brainliest si adiós correcto
19NBoli
Write the basic solution for the simplex tableau determined by setting the nonbasic variables equal to 0.
Answer:
same question, you can solve this like this
.
Triangle ABC was transformed to create triangle A'B'C'.
А
B
с
x
3
4
5
67
A
AN
A
В'
C
Which rule best describes this transformation?
А
(x, y) = (x,y - 7)
B
(x, y) (x, y)
С
(x, y) - (x - 7,Y)
D
(x, y) - (-x, y)
Answer:
A
Step-by-step explanation:
Hello There!
The y value of ABC was subtracted by 7 to get to the figure A'B'C'
So the rule for the given transformation would be
(x,y) ---> (x,y-7)
factor the trinomial below. 6x^2-9x-6
A. 3(2x+6)(x-1)
B. 3(2x+1)(x-2)
C. 3(2x+2)(x-1)
D. 3(2x+2)(x-6)
all my points are yours for your answer
Answer:
B. 3(2x+1)(x-2)
Step-by-step explanation:
For this case we have the following trinomial:-
6x^2-9x-6
Rewriting we have:-
3(2x^2-3x-2)
Factoring we have:-
3(2x+1)(x-2)
So this is ur answer.. mark me as brainliest if answer is comfortable
QUICK PLEASE HELP!!!
I’LL MARK BRAINLIEST!!!!
Answer:
c.vertical angle is the answer
Answer:
c
Step-by-step explanation:
vertical
correct answer is c
Need help with math homework, anyone know the answers/how to do these?
The average of 15 test scores is 80. If the average of first eight test scores is 65 and that of the last eight test scores is 70, then the eighth score is 80.
True or False?
Answer:
FalseStep-by-step explanation:
The average of 15 test scores is 80.
The total is:
15*80 = 1200The average of first eight test scores is 65.
The total is:
8*65 = 520The average of last eight test scores is 70.
The total minus 8th score is:
8*70 - 80 = 480The sum gives us the total of 15 scores:
520 + 480 = 1000 < 1200The answer is FALSE
Which is the product of 5/18 and 6?
List the key features of the quadratic function y = –x2 + 4x – 3.
The key features of the quadratic function are
vertex is (2, 1)Axis of symmetry: x = 2The domain of the function is the set of all real valuesDetermining the key features of the quadratic functionFrom the question, we have the following parameters that can be used in our computation:
y = -x² + 4x - 3
A quadratic function is represented as
y = ax² + bx + c
By comapring the equations, we have
a = -1, b = 4 and c = -3
For the key features
Axis of symmetry: x = -b/2a
So, we have
x = -4/(2 * -1)
x = 2
The domain of the function is the set of all real values
For the vertex, we have
(h, k) = (symmetry, f(symmetry))
So, we have
y = -2² + 4(2) - 3
y = 1
So, the vertex is (2, 1)
Read more about quadratic equation at
brainly.com/question/1214333
#SPJ1
Given the data, as shown in the image below, determine if the distribution is uniformly distributed, symmetrically distributed,
skewed right, or skewed left.
Pet Preferences in Grade 11
025
02+
0.15 +
L.
0.1
0.05
Dog
Cat
Snake
Rabbit
Mice
a.
skewed left
symmetric
c. uniform
d. skewed right
b.
Dlouco colect the hactancintor from the choices provided
Save and Exit
Next
Submit
Mark this and return
Answer:A
Step-by-step explanation:
HELP PLEASE!!!! LOOK AT THE PIC!!!
Triangle A'B'C' is the image of Triangle ABC under a dilation.
What is the scale factor of the dilation?
Answer:
3
Step-by-step explanation:
i took the quiz lol
Answer:
3
Step-by-step explanation:
Please help this is due in 30 minutes
Answer:
Step-by-step explanation:
linear functions are straight lines, got it from here?
Answer:
It is the last option.
Step-by-step explanation:
It is the last option, bnecausen order for a graph to be linear it must a straight line, but Pablo is saying it is not linear, so it should not have a straight line.
Solve this using substitution method. Many many thanks
Answer:
y=2 and x=1
Step-by-step explanation:
sub 2 into 1
3(15-7y) + 4y= 11
45 - 21y +4y =11
-21y+4y= 11-45
-17y= - 34
y=2
Therefore sub y into x equation
x=15-7(2)
x= 1
Answer:
3x + 4y = 11
x = 15 -7 y
3 (15-7y) = 11
45 - 21y + 4y = 11
45 - 17 y = 11
-17 y =11 -45
-17y ÷ -17 = -34 ÷ -17
y = 2
x = 15 - 7y
x = 15 - 7(2)
x = 15 - 14
x = 1
there for y = 2 and x = 1 is the solution