Answer:
B: 48
Step-by-step explanation:
Hope It helpsss!
Point W has the coordinates (−19,−25)
. In which quadrant is W located?
A
Quadrant I
B
Quadrant II
C
Quadrant III
D
Quadrant IV
me pueden ayudar con este problema
Answer:
2.3 batches
Step-by-step explanation:
Answer:
3.75 cups of sugar and 7.8 cups.of flour
Step-by-step explanation:
1.25×3=3.75
2.6×3=7.8
In 2009 a survey of Internet usage found that 79 percent of adults age 18 years and older in the United States use the Internet. A broadband company believes that the percent is greater now than it was in 2009 and will conduct a survey. The company plans to construct a 98 percent confidence interval to estimate the current percent and wants the margin of error to be no more than 2.5 percentage points. Assuming that at least 79 percent of adults use the Internet, which of the following should be used to find the sample size (n) needed?
a. 1.96 â0.5/n = 0.025
b. 1.96 â0.5(0.5)/n = 0.25
c. 2.33 â0.5(0.5)/n =0.05
d. 2.33 â0.79(0.21)/n= 0.025
Answer:
[tex]0.025 = 2.33\sqrt{\frac{0.79*0.21}{n}}[/tex]
Option d.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
79 percent of adults age 18 years and older in the United States use the Internet.
This means that [tex]\pi = 0.79[/tex]
98% confidence level
So [tex]\alpha = 0.02[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.02}{2} = 0.99[/tex], so [tex]Z = 2.33[/tex].
Which of the following should be used to find the sample size (n) needed?
We have to find n for which [tex]M = 0.025[/tex]
So the equation is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]0.025 = 2.33\sqrt{\frac{0.79*0.21}{n}}[/tex]
Option d.
13. Bir çay bahçesinde 3 kişilik, 4 kişilik ve 6 kişilik masa-
lar vardır. Her tür masadan en az bir tanesi dolu olmak
üzere, toplam 11 masa tam dolu, diğerleri boştur.
Buna göre, çay bahçesindeki masalarda oturan kişi
sayısı en az kaçtır?
A) 37
B) 39
C) 43
D) 45
E) 47
Help I’ve been stuck on these questions
Answer:
3+4x
7-12
2x+14=18
four times a number
four times a number is added to seven
Step-by-step explanation:
i’m giving 20 points pls help ☹️
Answer:
Dark Blue
Step-by-step explanation:
The easiest way it to assume X = 0. This will make the parentheses equal to 1 in each equation. So, the Y value will be the number in front of the parentheses.
The first will make the point (0,27)
4. What is the circumference of a circle with a diameter of 70 yd? Round your answer to the nearest yard. (
O 220 yd
O 1,540 yd
210 yd
440 yd
Answer:
220 yd
Step-by-step explanation:
circumference = pie * diameter
c = pie * 70
Which two expressions have the same value?
1. 23-82
2. 23 - (8 x 2)
3. (23 -8) x 2
Answer:
Any expression doesn't have the same value
Step-by-step explanation:
1. 23-82Subtract 82 from 23.
−59
2. 23 - (8 x 2)Simplify each term.
Multiply 8 by 2.
23−1⋅16
Multiply −1 by 16.
23−16
Subtract 16 from 23.
7
3. (23 -8) x 2Subtract 8 from 23.
15⋅2
Multiply 15 by 2.
30
Hope it is helpful.....laura tiene láminas y 40 están repetidas si coloca 5 en cada página de su álbum ¿cuántas páginas completará laura?
ayudaaaaa
Answer:
8.
Step-by-step explanation:
Dado que Laura tiene 40 láminas repetidas, si coloca 5 de estas láminas en cada página de su álbum, para determinar cuántas páginas de su álbum podrá Laura completar se debe realizar el siguiente cálculo:
40 / 5 = Cantidad de páginas
8 = Cantidad de páginas
Así, colocando 5 láminas por página, Laura podrá completar 8 páginas de su álbum.
HELPPPP!!! PLEASE
find the value of x
Answer:
120
Step-by-step explanation:
90+90+x+60=360
240+x=360
x=360-240
x=120⁰
Answer:
x = 180° - 60° = 120°
Step-by-step explanation:
Because they are same side interior angles
If Kelly walks 2 miles in 80 minutes, then Kelly will walk how far in 110 minutes if she walks at the same
speed the whole time? If necessary, round your answer to the nearest tenth of a mile.
Which is the ordered pair that represents a point whose x-coordinate is the opposite of its y-coordinate and is located in Quadrant II?
(-1, 1)
(-1, 1)
(-2, -2)
(-2, -2)
(3, 3)
(3, 3)
(4, -4)
(4, -4)
Answer:
(-1, 1)
Step-by-step explanation:
-1 is the opposite of 1, and the point is located in quadrant ll.
Richard has three times as many crayons as Jordan. Together they have 60 crayons. How many crayons does
Richard have?
O 15 crayons
O 16 crayons
0 44 crayons
0 45 crayons
Answer: 44 Crayons
Step-by-step explanation:
Help please I will mark brainly answer:))
Answer:
2 times 30.
Step-by-step explanation:
Answer:
im not 100% sure this is right but i hope it helps!
total cost
100 $ for 2 visits
160 $ for 4 visits
190 $ for 5 visits
280 $ for 8 visits
cost per visit
60 $ for 2 visits
120 $ for 4 visits
150 $ for 5 visits
240 $ for 8 visits
PLEASE HELP!!!!
What is the area of this trapezoid enter your answer in the box ?
On Tuesday morning Tori went running for 40 minutes.
She knows that running for 30 minutes uses 529 kcal.
Tori thinks she used more than 700 kcal by running for 40 minutes.
(b) Is Tori correct?
Show a check of your working.
Answer:
Step-by-step explanation:
40min(529kcal/30min)=705.33kcal
So she is correct in saying she used more than 700 kcal
HURRY PLEASE
Simplify: 12k - 6 + (3k)(4)
Find the value of x. If necessary, round your answer to the nearest tenth. O is the center of the circle. The figure is not drawn to scale.
20
5
o
x
Оа
125
Ob
20.6
19.4
Od
11.2
Answer:
11.2
Step-by-step explanation:
x is the length of a radius of the circle, all radii have the same length.
the chord of length 20 is perpendicular to the segment of length 5, so the segment bisects the chord , so half of the chord is length 10.
The segment of length 10 is one leg of a right triangle while the segment of length 5 is the other leg. The hypotenuse is also a radius of the circle.
The length of the hypotenuse can be found by they Pythagorean Theorem, a^2 + b^2 = c^2, so
5^2 + 10^2 = c^2 or
25 + 100 = c^2 or
c^2 = 125 or
c = [tex]\sqrt{125}[/tex] = ≈ 11.2
so if one radius is approximately 11.2, then all radii (including the one of length x) are 11.2
solve the system of linear equations by substitution:
x+y=27, y=x+9
Answer:
you answer will be x=9 , y=18
The base of a box, built from a model, has an area that can be represented by the function B(x) = 4x^2 + 8, where x is the width of the model's base. The height of the box can be represented by the function H(x) = x + 2.
Which function best describes C(x), the capacity of the box?
A. C(x) = 4x^3 + 8x^2 + 8x + 16
B. C(x) = 4x^3 + 16
C. C(x) = 4x^3 + 16x^2 + 16
D. C(x) = 4x^3 + 32x^2 + 2x + 16
Answer:
A) C(x)=4x³+8x²+8x+16
Step-by-step explanation:
(4x²+8)(x+2)=
A) 4x³+8x²+8x+16
The capacity of the box would be the volume.
Multiply the area by the height:
4x^2 + 8 times x+2
Multiply each term by each term:
4x^2 * x = 4x^3
4x^2 * 2 = 8x^2
8 * x = 8x
8*2 = 16
Combine the terms to get:
4x^3 + 8x^2+ 8x +16
The answer is A. C(x) = 4x^3 + 8x^2 + 8x + 16
Lois loans her sister Emily $2,000 with a simple interest rate of 1.5%. How much money will Lois make in interest if it takes Emily 3.5 years to pay her back
Answer:3261.91
Step-by-step explanation: y=2000(1+.15)3.5
I need help
5th Grade: Module 2 - Lesson 23
please send me picture why bc i need do a division of that and show my work please help
Answer:okay send me a picture of your lesson
Step-by-step explanation:
Answer:
or
Step-by-step explanation:
the table shows the cost to take a ferry boat across a lake. Ferry Boat Tickets vehicle | cost cars| $52 Trucks| $75
plss take a pic of your quistion
Step-by-step explanation:
I cant understand plss
AND THIS!! IM STUCK ON THIS
Answer:
y=3x+10
Step-by-step explanation:
2=-12+b
b=10
Express 6cm as a percentage of 7.5m
Answer:
0.8%
Step-by-step explanation:
First, convert 7.5 m to cm.
There are 100 cm in one meter, so to convert this, multiply 7.5 by 100:
7.5(100)
= 750
So, there are 750 cm in 7.5 m.
To find the percent of 6 cm, divide 6 by 750, then multiply by 100:
(6/750) x 100
= 0.008 x 100
= 0.8
So, 6 cm as a percentage of 7.5 m is 0.8%
Which rate can you set 7 miles/ 1hour equal to in order to find the distance traveled in 49 hours at 7 miles per hour?
Answer:
Step-by-step explanation:
miles hour
7 : 1
*7 *7
--------------------------
49 : 7
49/7=7
Ayden earned a grade of 89% on his multiple choice history final that had a total of
200 problems. How many problems on the final exam did Ayden answer correctly?
Answer:
178
Step-by-step explanation:
Method 1: Set up a proportion
Set up an equation of the form:
\frac{\color{red}{\text{part}}}{\color{orange}{\text{whole}}}=
whole
part
=
\,\,\frac{\color{blue}{\text{percent}}}{100}
100
percent
Assign the variable xx to the unknown value:
\color{red}{x}=
x=
\,\,\color{red}{\text{part}}
part
The question asks what \textit{part}part of the total questions is 89%
Substitute the known values with the numbers given in the problem, and the unknown value with xx:
\frac{\color{red}{x}}{\color{orange}{200}}=
200
x
=
\,\,\frac{\color{blue}{89}}{100}
100
89
Solve for xx:
100\cdot\color{red}{x}=
100⋅x=
\,\,\color{orange}{200}\cdot\color{blue}{89}
200⋅89
Cross multiply
\frac{100x}{100}=
100
100x
=
\,\,\frac{17800}{100}
100
17800
Divide both sides by 100
178
Simplify
Method 2: Convert to decimal and multiply
{89}{100}=0.89
89%=
100
89
=0.89
Move decimal 2 places to the left
{Multiply result by the total:}
Multiply result by the total:
0.89{200}=
0.89⋅200=
178
number
percent
178
89%
200
100%
Answer:
178
Step-by-step explanation:
just trust meee
use associative property of multiplication to write an expression equivalent to (18*7)*y
Answer:
(7*y)*18
Step-by-step explanation
the associative property is a property of some binary operations, which means that rearranging the parentheses in an expression will not change the result
A slice of a pie weighs 8 ounces. How many pounds do 6 slices of pie weigh?
Answer:
A slice of a pie weighs 8 ounces. How many pounds do 6 slices of pie weigh?
Answer: 48 pounds
Step-by-step explanation:
Hope this helps :D
Which expression is equivalent to 4√147
A. 28√3
B. 12√7
C. 3√7
Answer:
(A) 28 squared 3
Step-by-step explanation: