Answers
Related Questions
Express 6cm as a percentage of 7.5m
Answers
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%
PLEASE HELP!!!!
What is the area of this trapezoid enter your answer in the box ?
Answers
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
Answers
Answer: 44 Crayons
Step-by-step explanation:
A slice of a pie weighs 8 ounces. How many pounds do 6 slices of pie weigh?
Answers
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
Recall from Exercise 1-16 the experiment that investigated the effectiveness of a nicotine lozenge for subjects who wanted to quit smoking (Shiffman et al., 2002). Before the treatments began, subjects answered background questions, including how many cigarettes they smoked per day. Among the 1818 subjects in the study, the average was 22.0 cigarettes per day, and the standard deviation was 10.8 cigarettes per day. a. Identify the population and parameter of interest.
Answers
Solution :
The population of the interest is : All smokers
The parameters of the interest is : population mean number of the cigarettes per day.
Population of interest :
The population interest is defined as the group or the population form the sample from which the experimenter or the researcher draws results or the conclusion of the experiment.
In the context, the researcher wants to draw the results from all the smokers in the study, so the population of interest is the smokers.
Parameter of interest :
The parameters of interest is the set of all unknown numbers which describes the population from which the researcher wishes to test with the estimator.
In the context, the interest parameter is the mean or the average population number of the cigarettes per day.
HURRY PLEASE
Simplify: 12k - 6 + (3k)(4)
Answers
24k-6 (collect like terms)
Final answer is 24k-6
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?
Answers
Answer:
Step-by-step explanation:
miles hour
7 : 1
*7 *7
--------------------------
49 : 7
49/7=7
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
Answers
use associative property of multiplication to write an expression equivalent to (18*7)*y
Answers
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
solve the system of linear equations by substitution:
x+y=27, y=x+9
Answers
Answer:
you answer will be x=9 , y=18
me pueden ayudar con este problema
Answers
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
HELPPPP!!! PLEASE
find the value of x
Answers
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
AND THIS!! IM STUCK ON THIS
Answers
Answer:
y=3x+10
Step-by-step explanation:
2=-12+b
b=10
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.
Answers
Answer:
Step-by-step explanation:
40min(529kcal/30min)=705.33kcal
So she is correct in saying she used more than 700 kcal
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.
Answers
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
Answers
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
Answers
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
Help please I will mark brainly answer:))
Answers
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
Which expression is equivalent to 4√147
A. 28√3
B. 12√7
C. 3√7
Answers
Answer:
(A) 28 squared 3
Step-by-step explanation:
laura tiene láminas y 40 están repetidas si coloca 5 en cada página de su álbum ¿cuántas páginas completará laura?
ayudaaaaa
Answers
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.
the table shows the cost to take a ferry boat across a lake. Ferry Boat Tickets vehicle | cost cars| $52 Trucks| $75
Answers
plss take a pic of your quistion
Step-by-step explanation:
I cant understand plss
Find the first partial derivatives of the function. f(x, t) = e−9t cos(πx)
Answers
Answer:
[tex]f_{x}(x,t) = -\pi e^{-9t} \sin{(\pi x)}[/tex]
[tex]f_{t}(x,t) = -9\cos{(\pi x)} e^{-9t}[/tex]
Step-by-step explanation:
We are given the following function:
[tex]f(x,t) = e^{-9t} \cos{(\pi x)}[/tex]
First derivatives:
We find the first derivatives in function of x and of t.
Function of x:
The exponential is only a function of t, so it is treated as a constant.
[tex]f_{x}(x,t) = e^{-9t} \frac{d}{dx](\cos{(\pi x)}) = -e^{-9t} \sin{(\pi x)} \frac{d}{dx}(\pi x) = -\pi e^{-9t} \sin{(\pi x)}[/tex]
Function of t:
Same logic as above, the cosine as treated as a constant.
[tex]f_{t}(x,t) = \cos{(\pi x)} \frac{d}{dt}(e^{-9t}) = \cos{(\pi x)} e^{-9t} \frac{d}{dt}(-9t) = -9\cos{(\pi x)} e^{-9t}[/tex]
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
Answers
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.
Which two expressions have the same value?
1. 23-82
2. 23 - (8 x 2)
3. (23 -8) x 2
Answers
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.....Help I’ve been stuck on these questions
Answers
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 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
Answers
Answer:okay send me a picture of your lesson
Step-by-step explanation:
Answer:
or
Step-by-step explanation:
What is the equation, in slope-intercept form, of the line that is perpendicular to the line
y-4 =-{(x – 6) and passes through the point (-2, -2) ?
o
v=-x-10
y=-x+ 10
y=zx-1
y=x+1
Next
Mark this and return
Save and Exit
Submit
Answers
Answer:
Step-by-step explanation:
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
Answers
Answer:3261.91
Step-by-step explanation: y=2000(1+.15)3.5
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
Answers
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
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
Answers
Answer:
220 yd
Step-by-step explanation:
circumference = pie * diameter
c = pie * 70