Answer:
[A] 9 minutes to complete one task
[B] 6 tasks completed, with 2/3rds of another task completed.
Step-by-step explanation:
5 tasks in 45 mins is equal to one task in 9 minutes
60 minutes in an hour, 9 minutes per task = 6 tasks completed, with 2/3rds of another task completed.
Question 4 of 5
Select the correct answer.
Sebastian randomly surveyed 25 people in his neighborhood to find out which electric company they use. In his survey, he found that
16% of the sample use Reliable Energy
What would most likely happen if he decided to randomly survey 50 people instead?
A. There is not enough information to determine how the sample proportion would be affected.
B.The sample proportion would less closely model the population proportion.
C. The sample proportion would not be affected.
D The sample proportion would more closely model the population proportion.
Answer:
D The sample proportion would more closely model the population proportion.
Step-by-step explanation:
The more people surveyed, the more accurate the information.
Please Help! locks in 30 min! Will give brainlest!
Answer:
First option [tex]0, \frac\pi2, \pi, \frac{3\pi}2[/tex]
Step-by-step explanation:
first of all, let's replace the lhs with the equivalent in sine (from the pythagoran identiy on sine and cosine)
[tex]1-sin^2\theta =1-sin\theta[/tex]
At this point we take 1 from both side, and change signs just out of convenience.
[tex]\sin^2\theta =sin\theta[/tex]
Now we have 2 options. If [tex]sin \theta =0 \leftrightarrow \theta = k\pi[/tex] the equation is verified, and we got two solutions [tex]\theta =0; \theta = \pi[/tex]. Else, we can divide by [tex]sin\theta[/tex] and we get
[tex]sin\theta = 1 \leftrightarrow \theta = \frac\pi2+k\pi[/tex].
We can add everything together and write
[tex]\theta = k\frac\pi2; k\in\{0,1,2,3\}[/tex] or, in our case, the first answer.
A bag contains 15 marbles. Six are red, three are blue, and the rest are green or yellow. If the ratio of green marbles to blue marbles is 2 to 3, what is the ratio of yellow marbles to red marbles?
Question 2 options:
3/6
4/6
4/15
6/4
ill give brain for the first one
Answer:
3/6
Step-by-step explanation:
15 - (6+3) = 6
6 ÷ 2 = 3
number of red is 6
and green is 3
3/6
WILL GIVE BRAINLIEST!!!!
1. What is the length of BD?
Ansanswer choice b
Step-by-step explanation:
Can you help me please
Answer:
No, the slope's are not the same
Short-cut explanation:
Simply count the spaces between the two lines at the very top then compare to the number of space between at the very bottom of the graph.
There are 2 spaces between the two lines at the top. There seems to be 1 and 1/2 spaces at the very bottom.
[tex]2\neq 1.5[/tex] , therefore, not parallel.
If they are the same, then it is parallel. Although, in this case, it is not(Shown on the graph).
Answer:
Basic Concept:
A criterion for parallel lines is that they should have equal slopes. If the slopes of these lines is equal, these lines are parallel and are intersecting if the slopes are not equal
let the line on the left be 'line 1' and the line on the right be 'line 2'
Slope of Line 1:
We are given 2 points on the line and we will use them to get its slope
We know that the slope of a line is the change in its y-ordinate divided by its change in x - ordinate
The points given are: (-3 , -5) and (0 , 4)
Change in x:
The change in x of these 2 coordinates can be calculated by subtracting their x- ordinates
Change in x (Δx) = x1 - x2
Δx = -3 - 0
Δx = -3
Change in y:
The change in y of these 2 can similarly be calculated by subtrating the y-ordinates
change in y (Δy) = y1 - y2
Δy = -5 - 4
Δy = -9
Slope of the line:
Since the slope = Δy / Δx
Replacing the known values:
Slope = -9 / -3
Slope = 3
Therefore, the slope of 'line 1' is 3
Slope of Line 2:
We are given 2 points on the line and we will use them to get its slope
We know that the slope of a line is the change in its y-ordinate divided by its change in x - ordinate
The points given are: (0 , -6) and (4 , 4)
Change in x:
The change in x of these 2 coordinates can be calculated by subtracting their x- ordinates
Change in x (Δx) = x1 - x2
Δx = 0 - (4)
Δx = -4
Change in y:
The change in y of these 2 can similarly be calculated by subtrating the y-ordinates
change in y (Δy) = y1 - y2
Δy = -6 - 4
Δy = -10
Slope of the line:
Since the slope = Δy / Δx
Replacing the known values:
Slope = -10 / -4
Slope = 5/2
Therefore, the slope of 'line 2' is 5/2
Conclusion:
We have calculated the slope of both the lines.
now, we will compare the slopes to find out if the lines are parallel or not
Slope 1 = 3
Slope 2 = 5/2
Since the slopes are NOT equal, the lines are not parallel
Obtain two numbers such their HCF is 20 and their LCM is 300....... By steps... Plzzzzzz answer fast
Answer:
60 and 100
Step-by-step explanation:
Look for 2 multiples of 20 which are also factors of 300
No long explanation needed
How many ounces are in 43 pounds?
Group of answer choices
Find the L.C.M of the given pair of numbers using the prime factors method. 70 and 84
Answer:
420
Step-by-step explanation:
Prime Number: a whole number greater than 1 that cannot be made by multiplying other whole numbers
First prime numbers: 2, 3, 5, 7, 11, 13, 17, ...
Prime Factorization: prime numbers that multiply together to make the original number.
LCM = least common multiple: smallest positive number that is a multiple of two or more numbers
Start by finding the prime factorization of each number.
Start with the smallest prime number: 2
70 ÷ 2 = 35
35 is not divisible by 2 or 3, but is divisible by 5:
35 ÷ 5 = 7
7 is a prime number, so cannot be divided any further
So 70 = 2 × 5 × 7
Start with the smallest prime number: 2
84 ÷ 2 = 42
Again divide by 2:
42 ÷ 2 = 21
Now divide by 3:
21 ÷ 3 = 7
So 84 = 2 × 2 × 3 × 7
Write each number as a product of primes, matching primes vertically when possible
84 = 2 × 2 × 3 × 7
70 = 2 × 5 × 7
Now bring down the primes in each column. The LCM is the product of these factors.
LCM = 2 × 2 × 3 × 5 × 7 = 420
Please help me asap !!
Answer:
3.5
Step-by-step explanation:
(42 - 14)/(12 - 4) = 28/8 = 7/2 = 3.5
1 What is the remainder when 245 is divided by 9?
2 A bridge in the park is 84 feet long. The length of the bridge is 6 times the width of the bridge. How wide is the bridge?
3 Dylan gets home from school at 4:05 p.m. He spends 20 minutes on his homework and 15 minutes practicing the drums. How many minutes does he have left before leaving for soccer practice at 5:15 p.m.?
Answer:
245÷9 =0 witt remainder 9
Laura is walking quickly and finds that she travels 54 feet in a span of 12 seconds. Which of the following is the speed at which Laura is walking? (1) 4.5 feet per second
(2) 4.75 feet per second
(3) 5.25 feet per second
(4) 5.5 feet per second
Answer:
(1) 4.5 feet per second
Step-by-step explanation:
Given;
distance traveled by Laura, d = 54 feet
time to taken for Laura to cover this distance, t = 12 seconds
Laura's speed is given by the following equation;
speed = distance / time
Laura's speed = 54 ft / 12 s
Laura's speed = 4.5 feet per second
Therefore, the speed with which Laura is walking is 4.5 feet per second.
2(4x - 8y) - 9x + 7 as a simplifying expression.
Answer:
2(4x - 8y) - 9x + 7
8x - 16y - 9x + 7
-1x - 16y + 7
PLEASE HELP!!!! TELL ME HOW TO DO IT
Please help mark as brainliest
Answer:
the answer is an group tens
Step-by-step explanation:
BRAINLIEST PLEASE
Evaluate 2d - 3n divided by four n = 2 and d = 3
Answer:
0 is your answer..........
Identify the premise. Choose the correct answer below.
O A. Men are better qualified for high office than women.
B. Men in high office.
C. All the mayors of my hometown have been men.
© D. Mayors of a certain town.
In the figure below,
What is the value of x?
Answer: 16 degrees
Step-by-step explanation:
(3x - 18) = 66
Because vertically opposite angles are equal
66 - 18 = 48
48 divided by 3 = 16
The 6 games Kelly's team played took a total of 7 hours. How many minutes total did they play softball?
( THE SUM OF THE MEASURES OF THE ANGLES BELOW IS 180* ) I will give brainlst for whoever gets this right and fills it out
Answer:
2x-10+x+x+10=180, or 4x=180
Step-by-step explanation:
So since the total is 180, you add them all up like an equation.
So,
2x-10+x+x+10
Combine like terms
4x=180
x=45
Then plug it back in to the equations.
x=45
(2x-10)=80
(x+10)=55
1) Suppose Emily randomly turns on 2 of the 7 computers. Which
expression could you use to determine the probability that both
computers will be infected with a virus?
A 2/7*1/6
B) 1/7* 1/7
C)2/7*1/6
D)2/7*5/7
Help me please
Answer:
b jdjjsgd
Step-by-step explanation:
edge 2020hianhisis
if one cup of flour is $0.44, How much will 1/2 cup cost?
Answer:
$0.22
Step-by-step explanation:
$0.44 -1/2 cup = $0.22
What is 94.239 rounded to the nearest thousandth?
94.239 is already rounded to the nearest thousand as the no. of digits after the decimal place is three.
What is rounding off of numbers?We round off numbers to make them easier to remember and it also keeps their value approximately to the place it has been rounded off.
To round off any number to any place we'll look for the digit next to that place and if it is equal to or greater than 5 we'll add one to the previous digit and make all the digits after it zeroes and if the digit is less than 5 we do not add one to the preceding digit and simply make all the digit after it to zeroes.
Given, 94.239 rounded to the nearest thousandth it is already rounded to the nearest thousand the no. of digits after the decimal place is three.
learn more about rounding off numbers here :
https://brainly.com/question/1285194
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if Penelope's car has an average fuel consumption of 3 miles per gallon and she uses 9.5 gallons how far did she drive
Answer:
approximately 3.16 repeated
Step-by-step explanation:
Given parameters:
Average fuel consumption of Penelope's car = 3miles per gallon
Amount of fuel used = 9.5 gallons
Unknown:
Distance of her drive = ?
Solution:
Since her rate of fuel consumption per miles is known, we can simply solve for the distance she covers.
Distance covered = Rate of fuel consumption per miles x amount of fuel used
Distance covered = 3 x 9.5 = 28.5miles
The distance covered by Penelope's car is 28.5miles
Find the sine ratio of angle -. Hint: Use the slash symbol (/ ) to represent the fraction
par, and enter the fraction with no spaces.
Answer:
4/5
Step-by-step explanation:
The sine ratio is defined as the opposite leg/hypotenuse. The opposite leg is 4 and the hypotenuse is 5.
One angle in a triangle has a measure that is three times as large as the smallest angle. The measure of the third angle is 45 degrees more than that of the smallest angle. Find the measure of the LARGEST angle.
Answer:
the largest angle are 90 degree
Step-by-step explanation:
let x is the smallest angle
the angles are
x+x+2x=180
4x=180
4x/4=180/4
x=45 degree
2x=90
simplify the surd square root 12 x square root 8
The simplification of square root 12 x is [tex]\mathbf{2 \sqrt{3x}}[/tex] and the square root of 8 is [tex]\mathbf{2 \sqrt{2}}[/tex]
What is Surds?Surds is a mathematical expression of numbers in square roots that cannot be changed to real numbers but be further simplified into irrational numbers.
From the given information.
The simplification of [tex]\mathbf{\sqrt{12x}}[/tex] is:
[tex]\mathbf{= \sqrt{4 \times 3x }} \\ \\ \mathbf{= 2\sqrt{ 3x }}[/tex]
The simplification of the [tex]\mathbf{\sqrt{8 }}[/tex] is determined by factoring 8:
i.e.
[tex]\mathbf{= \sqrt{4 \times2 }} \\ \\ \mathbf{= 2\sqrt{ 2}}[/tex]
Learn more about surds here:
https://brainly.com/question/24700530
2 inches is approximately 5 centimeters. Kevin is 66 inches tall. How many centimeters (cm) tall is he?
A triangle has sides with lengths of 60 feet, 63 feet, and 87 feet. Is it a right triangle?
Answer:
Yes
Step-by-step explanation:
We can use the Pythagorean Theorem to check if this triangle is a right triangle:
[tex]a^2+b^2=c^2[/tex]
Note that [tex]a[/tex] and [tex]b[/tex] are the legs of the triangle and [tex]c[/tex] is the hypotenuse:
Substitute the lengths of the sides into the equation:
[tex]60^2+63^2=87^2[/tex]
[tex]3600+3969=7569\\7569=7569[/tex]
Therefore this triangle is a right triangle.
Which of the binomials below is a factor of this trinomial?
x^2 - 5x - 36
A. x - 7
B. x + 4
C. x^2 + 7
D. x - 4
answer:
B
Step-by-step explanation:
x² - 5x - 36 = (x - 9)(x + 4)
x² + (a + b)x + ab = (x + a)(x + b)
find the difference between the actual and estimated values of 55 - 21
Answer:
Actual: 34 Estimated: 40
Step-by-step explanation:
The difference between these values is that the actual difference is more accurate. If you're asking for the difference as in subtracting, then 7 is the answer. Hope this helps :)
Answer:
6
Step-by-step explanation:
Actual values = 55 - 21
= 34
Estimated values = 60 - 20 = 40
Difference between actual and estimated values = 40 - 34 = 6