Answer:
B. A one-sample z-interval for a sample proportion
Step-by-step explanation:
In this experiment we are only given the sample. Neither the population nor the two samples nor difference between two samples is given .
So we are left only with the option B which satisfies the required conditions.
We will estimate the sample proportion and then perform, the test.
The test are performed on the basis of the statistics given.
We have the sample and the proportion that it is not longer than 35 centimeters.
Therefore option B is the correct choice.
B. A one-sample z-interval for a sample proportion
Solve the system of linear equations by multiplying. Check the answer by graphing the system of equations. –2x + 2y = 10 -4x + 5y = 27
Answer:
x=2, y=7 (2,7)
Explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Nancy and Billy collect coins. nancy has x coins. Billy has 9 coins fewer than 2 times the number of coins Nancy has. Write and simplify an expression for the total number of coins Nancy and Billy have
. ayo be g
Write an equation that represents the word problem.
A wooden railing is 82 m long. It is to be divided into four pieces. Three pieces
will be the same length, and the fourth piece will be 2 m longer than each of the
other three. Find the length of each piece.
Answer:
hope that helps that you're correct answer
Step-by-step explanation:
let each piece be x, and the fourth piece x+2:
3x + x +2 = 82
4x = 80
x = 20
3 pieces will be 20m each and the 4th will be 20+2 = 22m long
Which term is an example of a coefficient? *
x + y
4x
8
35 + x
Answer:
4x
Step-by-step explanation:
it will always be the Number beside the variables
4x I guess I don't really know
Anna earned 22 points on her last test. If there were 40 possible points, what was her percent grade?
Answer:
55%
Step-by-step explanation:
Since Anna earned 22 points, and there was a total of 40 points, this means that she scored 22 out of 40 points. You can simplify this by dividing the denominator and numerator by 2. Then, you can multiply both the numerator and denominator by 5 to get a number out of 100.
[tex]\frac{22}{40} = \frac{11}{20}=\frac{55}{100}*100%=55%[/tex]
Casey ran out of time while taking a multiple-choice test and plans to guess on the last 101010 questions. Each question has 555 possible choices, one of which is correct. Let X=X=X, equals the number of answers Casey correctly guesses in the last 101010 questions.
Which of the following would find P(X=2)P(X=2)P, left parenthesis, X, equals, 2, right parenthesis?
Answer:
P(X=2)=
(10/2) (1/5)^2 (4/8)^8
Step-by-step explanation:
This has the correct binomial coefficient for 2 successes in 10 trials, the correct probabilities for success and failure, and the correct exponents for the number of successes and failures.
Point O is the center of the given circle. What is the measure of yz?
54°
A. 27°
B. 108
C. 54
O D. 72°
SUBMIT
Answer:
B. 108°Step-by-step explanation:
XO = YO equal as radius, therefore
m∠X = m∠Y = 54°∠YOZ is exterior angle of the triangle OXY and equal to sum of non-adjacent interior angles
m∠YOZ = 54° + 54° = 108°Arc YZ is 108°
Correct option is B
Triangle Q T S is shown. Angle A T S is a right angle. An altitude is drawn from point T to point R on side Q S to form a right angle. The length of T S is 3 x, the length of Q R is 6, and the length of R S is 12.
What is the length of side TS?
2 StartRoot 6 EndRoot units
6 StartRoot 6 EndRoot units
24 units
8 units
Answer:
6sqrt6 = 14.69 sqrt14,69 = 3.83
closest divider to 4.12 as <4.5 TS <3.5
Step-by-step explanation:
RS can be formed as a square so that = 12 can be used for other sides of that square to find the diagonal
Where diagonal square = TS side
12^2 x 12^2 = sqrt 144 + sq rt 144 = TS^2
TS^2 = sq rt 288 = 16.9705627 = 17
We then look at the choice answers 1, 2, 3, 4
sq rt 16.97 = 4.12310563 sq rt 17 = 4.11 where
2 sqrt 6 = 4.898989 so is incorrect.
Answer:
B. 6[tex]\sqrt{6}[/tex]
Step-by-step explanation:
Edge 2021
pls helppppppppppppppppppppppppwill mark brainliest
Multiply each pair of numbers -4.25x(-1.25)=
who was located on the Yucatan Peninsula? A.Olmec B.Mayan C.Aztec D.Inca
Solve the problem by entering and solving an equation.
A rectangular picture frame has a perimeter of 52 inches. The height of the frame is 16 inches. What is the width of the frame?
9514 1404 393
Answer:
52 = 2(16 +w)width = 10 inchesStep-by-step explanation:
The perimeter formula can be used.
P = 2(L +W)
Filling in the given values, we obtain an equation that can be solved for width:
52 = 2(16 +W)
26 = 16 +W . . . . divide by 2
10 = W . . . . . . . . subtract 16
The width of the frame is 10 inches.
[tex]\huge\star{\underline{\mathtt{\red{A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}\star[/tex]
52 2(16 +w)
width = 10 inches
The perimeter formula can be used.
P 2(L +W
Filling in the given values, we obtain an
equation that can be solved for width:
52 2(16 +W)
26 16 +W.... divide by 2
10 W........ subtract 16
The width of the frame is 10 inches.
The thickness (in millimeters) of the coating applied to hard drives is one characteristic that determines the usefulness of the product. When no unusual circumstances are present, the thickness (x) has a normal distribution with a mean of 2 mm and a standard deviation of 0.04 mm. Suppose that the process will be monitored by selecting a random sample of 25 drives from each shift's production and determining x, the mean coating thickness for the sample.
Required:
Describe the sampling distribution of X (for a sample of size 16).
Answer:
The sampling distribution of X, for a sample of size 16, will be approximately normal with mean 2 mm and standard deviation 0.01 mm.
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For the population:
Mean 2 mm, standard deviation 0.04 mm
Describe the sampling distribution of X (for a sample of size 16).
Sample of size 16 means that [tex]n = 16[/tex]
By the Central Limit Theorem, approximately normal with mean 2 and standard deviation [tex]s = \frac{0.04}{\sqrt{16}} = 0.01[/tex]
Plz I rlly need help!!!!
Answer:
C. 20 C
I used an online converter or it is possible to Substitute F for 68 and then solve the equation
Solve for x
please help!
Answer:
Step-by-step explanation:
As these are alternate angles hence we got that ,
both angles will be equal ,
7x+5 = 47
x= (47-5)/7
x=6 degree
Answer:
x = 6°
Step-by-step explanation:
7x + 5° = 47°, because of alternate exterior angles (We can use this because the lines are parallel). Since we know this, we can solve for x.
Solving this equation:
7x + 5 = 47 and if you subtract by 5 on both sides you would get that 7x = 42. From here, you divide 42 by 7 to get your answer. 42/7 = 6 so x = 6 degrees.
Note: I assumed that the angle 7x + 5 was 7x + 5°
What’s the distance between 79 and -37
Answer:
116
Step-by-step explanation:
What does
-2 indicate about the position of -
and -2 on the number line? (1 point)
>
- is located on the right of-2
O-is located on the left of -2
O - s located on the right of 0 and -2 Is located on the left of 0
is located on the left of0 and -2 is located on the right of 0
Answer:
A. -⅗ is located on the right of -2.
Step-by-step explanation:
-⅗ > -2 means -⅗ is greater than -2. This implies that, on a numberline, -⅗ is closer to 0 than -2.
-¾ and -2 are both located left of 0.
However, -⅗ which is closer to 0 than -2, would be located on the right of -2.
PLS ANSWER!!
14.975 ➗ 9.5
Answer:
14.975÷9.5=1.57631578947
Free?????????????????????????????????????????????????????????????????????????????????????????
Answer:
THX OK
Step-by-step explanation: OK
Answer:
tysm
Step-by-step explanation:
I WILL MARK BRAINLIEST PLEASE HELP FIND ANGLE DEB
ITS DUE AT 12 PLEASE HELP PLEASE
Answer:
[tex]\boxed {\boxed {\sf \angle DEB = 111 \textdegree}}[/tex]
Step-by-step explanation:
We want to find angle DEB. We know AB is perpendicular to AC, CD is congruent to CE and angle B is 48 degrees.
ABC is a triangle. The angles in a triangle must add up to 180 degrees. Therefore:
∠A+∠B+∠C= 180°We know two angles: ∠B= 48° and ∠A= 90° (the little square denotes a right angle).
90°+48°+ ∠C= 180° Substitute values in.138°+ ∠C =180° Add 138°-138° ∠C= 180°-138° Subtract 138 from both sides. ∠C= 42°Note that angle C is part of another triangle. It is isosceles because the two legs (CD and CE) are congruent. Therefore, the two base angles (E and D) are congruent.
∠C+∠D+∠E= 180°∠C+ 2∠D= 180° Angles D and E are congruent42°+ 2∠D= 180° Substitute 42 in for angle C42°-42° +2∠D= 180°-42° Subtract 42 from both sides.2∠D= 138°2∠D/2= 138°/2 Divide both sides by 2.∠D= 69°∠D and ∠E equal 69 degrees.
Angle CED (∠E) and DEB are on a straight line together. Therefore, they are supplementary and equal 180 degrees.
∠CED+ ∠DEB= 18069° +∠DEB= 180° Substitute 69 for angle CED69°-69° +∠DEB= 180°-69° Subtract 69 from both sides∠DEB=111°Angle DEB is equal to 111 degrees
Plz help me this is 7th grade math
Answer:
both are 75 degrees ok
Step-by-step explanation:
c= 180-105 = 75
same with b
Which is the best estimate of -14 1/9(-2 9/10)?
O-42
O -28
O 28
O42
Answer:
The best estimate for the given calculation is 2.8.
Step-by-step explanation:
To determine the correct option regarding the result of this calculation, the mathematical resolution of the same must be developed:
-14 x 1 /9 x (-2 x 9/10) = X
-14 x 1 / 9 x (-18 / 10) = X
-14 x 1 / 9 x -1.8 = X
-14 / 9 x -1.8 = X
-1.555555 x -1.8 = X
2.8 = X
Therefore, the best estimate result for this mathematical operation is 2.8.
Show Your Knowledge
Molly has 18 coins, all dimes and nickels. The total value of the coins
is $1.05. How many of each type of coin does Molly have?
9514 1404 393
Answer:
15 nickels3 dimesStep-by-step explanation:
Let d represent the number of dimes Molly has. Then she has 18-d nickels, and the total value (in cents) of her coins is ...
5(18 -d) +10d = 105
5d +90 = 105 . . . . . . simplify
5d = 15 . . . . . . . . . . . subtract 90
d = 3 . . . . . . . . divide by 5; number of dimes
18-d = 15 . . . . . number of nickels
Molly has 3 dimes and 15 nickels.
Molly has 18 coins, all dimes and nickels. The total value of the coins
is $1.05. How many of each type of coin does Molly have?
[tex]\huge\star{\underline{\mathtt{\red{A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}\star[/tex]
15 nickels
3 dimes
Let d represent the number of dimes
Molly has. Then she has 18-d nickels, and
the total value (in cents) of her coins is ..
5(18-d) +10d = 105
5d +90 105.... simplify
5d 15...
. . subtract 90
d 3.. ... divide by 5; number of
dimes
18-d 15... . . number of nickels
Molly has 3 dimes and 15 nickels.
Find the common ratio for the geometric sequence with the given information.
ai = 4374; a4 = 162
3
1/3
1/4
3/2
3/4 of the pupils in the class passed an examination. if 60 pupils passed ,how many pupils were the class
y=2^x+6 domain and range
Answer:
Find the Domain and Range
Find the domain by finding where the equation is defined. The range is the set of values that correspond with the domain.
Domain:
( − ∞ , ∞ ) , { x | x ∈R }
Range:
( 6 , ∞ ) , { y | y > 6 }
Step-by-step explanation:
(−8,8)left parenthesis, minus, 8, comma, 8, right parenthesis and (1,-10)(1,−10)left parenthesis, 1, comma, minus, 10, right parenthesis.
Answer:
Step-by-step explanation:
What is the question? Are you looking for the distance between the points?
distance = √((Δx)² + (Δy)²) = √((1-(-8))² + ((-10)-8)²) = √(9²+(-18)²) = √405 ≅ 20.12 units.
40 = 2 x 2 x 2 x 5
Write the number 60 as a product of its prime factors in the same way.
Write the factors in order, from smallest to largest.
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Answer:
Step-by-step explanation:
60 = 2×2×3×5
Solve the equation and check your solution. (If all real numbers are solutions, enter REALS. If there is no solution, enter NO SOLUTION.)
5y + 1 = 8y − 5 + 2y
Answer:
y=6/5 or 1 1/5
Step-by-step explanation:
combine like terms
5y+1= 10y-5
subtract 5y from both sides
1=5y-5
add 5 to both sides
6=5y
divide by 5 on both sides
6/5=y
A $250 suede jacket is on sale for 1/5 off. Which choice shows how to find the sale price of the jacket?
Answer:
$200
Step-by-step explanation:
1/5 = 20 % 1.00/5=.20=20%
20 % 0r 250 = 50
250- 50=200
