Answer:
13
..................
38% adults favor the use of unmanned drones by police agencies. Twelve U.S. adults are randomly selected. Find the probability that the number of U.S. adults who favor the use of unmanned drones by police agencies is (a) exactly three, (b) at least four, (c) less than eight.
Question:
7x^2 + 8x = x^2
Answer:
x1= -4/3 and x2= 0
Step-by-step explanation:
Scientists want to estimate the mean weight of mice after they have been fed a
special diet. From previous studies, it is known that the weight is normally
distributed with standard deviation 4 grams. How many mice must be weighed so
that a 95% confidence interval will have margin of error of 0.4 grams?
Write only an integer as your answer.
Answer:
n = 484
Step-by-step explanation:
If Confidence Interval CI = 95 % then α = 5% and α/2 = 2,5 %
α/2 = 0,0125
MOE for normal distribution is:
MOE = z * σ/√n
For α/2 = 0,0125 ⇒ z(score) = -2,2
MOE = |-2,2| * 4/√n
0,4*√n = 8,8
√n = 8,8 / 0,4
√n = 22
n = 484
Can you help me please
A number is 4 more than 2 times another number. If their sum is 52 then find the
value of each number.
I
Answer:
16 and 36
Step-by-step explanation:
x + (2x+4) = 52
3x+4=52
3x=48
x=16
Youve been hacked by hidden06 OwO
Answer:
0w0
Step-by-step explanation:
A new Youth activity center is being built in Hadleyville . The perimeter of the rectangular playing field is 262 yards. The length of the field is 4 yards less than double the width. What are the dimensions of the playing field?
Answer:
irdk
Step-by-step explanation:
A population’s instantaneous growth rate is the rate at which it grows for every instant in time. Function r gives the instantaneous growth rate of a fruit fly population x days after the start of an experiment.
r(x) = 0.05(x^2 + 1)(x - 6)
Consider the graph of function r.
Function r has (blank) and (blank). Based on the instantaneous growth rate, the population decreased (blank) hours and the population increased (blank) hours.
Answer:
Decreased 4 days-96 hours
Increased 6 days-144 hours
Step-by-step explanation:
In order to solve this you just have to look at the graph and after the start of the experiment which is basically the origin of the graph and as you can see immidiately goes down after the start and it reaches the turning point in the day four which is when the graph starts to go up in the Y axis, so that day it would start the increase, and it increases from day 4 to 10 that would be 6 days, and the decrease would be from the origin to day 4.
Simplify (4.5)(5)(−2).
Group of answer choices
45
4.5
−4.5
−45
Answer: -45
Steps: 4.5 × 5 × -2 = -45
Plz mark brainliest:)
Select the postulate of equality or inequality that is illustrated. 5=5 addition postulate of inequality the multiplication postulate of inequality the symmetric postulate of equality the transitive postulate of equality comparison postulate the reflexive postulate of equality the transitive postulate of inequality
Answer:
Reflexive postulate of equality
Step-by-step explanation:
Given
[tex]5 = 5[/tex]
Required
Which option answers the question
From the list of given options, the correct answer is: reflexive postulate of equality
This is so, because:
Reflexive postulate of equality implies that: [tex]a = a[/tex]
So, take [tex]a = 5[/tex]
This gives:
[tex]a = a[/tex]
[tex]5 = 5[/tex]
Hence:
Reflexive postulate of equality answers the question
which equation could be used to solve for the Value of n +2 =6
Answer:
i think that it is an algebraic equation
Step-by-step explanation:
You can use 6-2=4. (N would equal 4.)
The sum of two numbers is 64 and the difference is 6. What are the numbers?
Larger number:
Smaller number:
x
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Check
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Answer:
29 and 35
Step-by-step explanation:
x+y=64
x-y=6
Solve by substitution.
x=6+y
6+y+y=64
6+2y=64
y=29
Then plug in 29 for y.
x+29=64 ......35
The two numbers that have a sum of 64 and a difference of 6 will be 29 and 35.
What is the solution to the equation?The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.
The sum of the two numbers is 64 and the difference is 6.
Let the two numbers be 'x' and 'y', and y is greater than x. Then the equations are given as,
x + y = 64 ...1
y - x = 6 ...2
Add both equations, then we have
y + y = 64 + 6
2y = 70
y = 35
Then the value of 'x' will be given as,
x + 35 = 64
x = 29
The two numbers that have a sum of 64 and a difference of 6 will be 29 and 35.
More about the solution of the equation link is given below.
https://brainly.com/question/545403
#SPJ2
One lap around the track at Kathleen’s school is 0.4 kilometer. If Kathleen ran 3.5 laps, how many kilometers did she run?
Answer:
Kathleen ran 2 3/16miles
Answer:
The correct answer is option B
(9x+5)+(-2x^2+10x)
(9x+5)+(−2x
2
+10x)
Answer:
If i´m correct and read the answer correct it should be:
-18x³+80x²+65x+5
Step-by-step explanation:
Hopefully this is correct, I couldn't understand if (-2x 2+10x) was spaced or if it was being multiplied.
6th grade math i mark as brainliest
Answer:
A and D
Step-by-step explanation:
-14 is less than -8 because is further away from 0
A triangle abc has angle measures of 45,45 and 90 and two congruent (equal sides. How would this triangle be classified ?
An isosceles triangle is one with two equal-length sides. ΔABC is an isosceles right angled triangle.
What is an isosceles triangle?An isosceles triangle is one with two equal-length sides. It is sometimes stated as having exactly two equal-length sides, and sometimes as having at least two equal-length sides, with the latter form containing the equilateral triangle as a particular case.
An isosceles right angled triangle has two equal sides, and those two equal sides make 90 degrees (right angle) internally. While the other two angles of the triangle measure 45°.
Hence, ΔABC is an isosceles right angled triangle.
Learn more about Isosceles Right Angled Triangle here:
https://brainly.com/question/27190025
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Some one please help it’s subtracting fractions
Convert any mixed numbers to fractions.
Then you get your initial equation
Applying the fractions formula for subtraction
Simplifying 72/16, the answer is
4 1/2
Water flowed out of a tank at a steady rate. A total of 18 and one-half gallons flowed out of the tank in 4 and one-fourth hours. Which expression determines the quantity of water leaving the tank per hour?
Answer:
D. 37/2 divided by 17/4
Step-by-step explanation:
Answer:
D) 37/2 / 17/4
Step-by-step explanation:
Change 18 1/2 and 4 1/4 into improper fractions.
18 1/2 = 37/2
4 1/4 = 17/4
So the answer is 37/2 / 17/4.
Please correct me if I am wrong, have a great day! :)
FIND THE UNIT RATE OF EACH SCENARIO.
TYPE YOUR ANSWER IN THE TEXT BOX BELOW.
0
2
Daxton is paid $48 in 6
hours. How much IS Daxton
Palld per hour?
Allison types 900 words in 20
Minutes. How many words
can she type per minutter
3
4
A Printing company can
print 15,000 flyers in 10
minutes. How many flyers
can be printed per minutes
Jeff traveled 300 miles and
Used 12 gallons Of gas. HOW
many mlies did he travel per
gaion Of gas?
You just got off the Haunted Mansion ride and the next ride you want to go
on is Splash Mountain. You have a fast pass that requires you to arrive at
Splash Mountain in 7 3⁄4 minutes. Splash Mountain is 1 3/5 miles away. You are able to cover 2/7 of a mile every minute. Can you make it to Splash Mountain?
Answer:
You can make it to Splash Mountain
Step-by-step explanation:
From the question,
The distance you need to cover to Splash Mountain is 1 3/5 miles, and the time you have to arrive there is in 7 3/4 minutes.
Also, from the question,
You are able to cover 2/7 of a mile every minute, that is
Your speed is 2/7 mile per minute
To determine if you can make it to Splash Mountain, we will determine the distance you can cover, traveling at this speed of 2/7 mile per minute for 7 3/4 minutes. If the distance you can cover is more than 1 3/5 miles, then you can make it; but if the distance you can cover is less than 1 3/5 miles, then you cannot make it.
From
Speed = Distance / Time
Distance = Speed × Time
Speed = 2/7 mile/minute
Time = 7 3/4 minutes = 31/4 minutes
∴Distance = 2/7 × 31/4
Distance = 31/14 miles = 2 3/14 miles
The distance you can cover traveling 2/7 of a mile every minute for 7 3/4 minutes is 2 3/14 miles, since this is more than 1 3/5 miles, then you can make it to Splash Mountain.
Hence, you can make it to Splash Mountain.
Rewrite in simplest terms: 4(-5u +3) – 4(8u - 1)
Answer:
You distribute then combine
your answer is -52u+16
Step-by-step explanation:
How can I solve this ?
Answer:
985.25
Step-by-step explanation:
An easy way to divide by larger numbers is to see if the divisor fits into the thousands, hundreds, tens, and ones place.
8 doesn't go into 7, so you'd bring down the number in the hundreds place and so on and so forth.
Answer:
you start by seeing how many times 8 goes into (7) which is zero Then you add the (8).
how many times does 8 go into 78 = 9 with 6 left over.
you bring the 6 down and the next 8 giving you (68) = 8 with 4 left over
so you bring the 4 and the two down giving you (42) = 5 with 2 left over.
so your answer is 985 remainder 2
Step-by-step explanation:
Tracy wants to buy some pies for her sisters and she has a budget of $82 to spend on $5
apple pies, $4.5 banana pies, and $5.5 chocolate pies. She wants to buy 16 pies for her
sisters and must buy as many chocolate pies as apple pies and banana pies combined.
How many of each item should she buy?
Answer:
5 of each item is how much she should buy
Step-by-step explanation:
Write the equation of the line the that is parallel to 21x-7y=12 and goes through the point (1, -3).
Please help, I'm not sure how to do this one!
The average teacher salary in a certain state is $52,300. If the standard deviation is $8,260, find the standard score for the following teacher salaries.
Teacher A: $56,236
Teacher B: $36,875
Question
A line with a positive slope Is parallel to one of the lines shown. What is its slope? Use the graph shown
below.
The slope is
Answer:
¼
Step-by-step explanation:
The slope of the line which is positive, will be the same as the slope any of the given line that has a positive slope also.
Thus, how do we know which line we should we calculate the slope for? The line that shows a positive slope would be the line we are to calculate the slope.
The blue line shows a positive slope. We know this because positive slope usually slants up as from our left to our right.
The red line has a negative slope. It slants down from left to right.
Next, find the slope of the blue line using the coordinates of any two points on the line. Let's use the following points, (0, 2) and (4, 3)
[tex] slope(m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{3 - 2}{4 - 0} [/tex]
[tex] slope(m) = \frac{1}{4} [/tex]
The slope of the line that is parallel to the blue line is ¼.
what is the sum of all even integers between 9 and 39?
Answer:
360
Step-by-step explanation:
10+12+14+16+18+20+22+24+26+28+30+32+34+36+38=360
it is very easy
hope it helps you
If the point (7, 3) is on the graph of an equation, which statement must be true?
A. There are solutions to the equation for the values X= 7 and x= 3.
B. The values x= 3 and y= 7 make the equation true.
C. The values x= 7 and y= 3 are the only values that make the equation true.
D. The values x= 7 and y= 3 make the equation true.
Answer:
D
Step-by-step explanation:
A graph of an equation is the set of all points that make an equation true. X = 7, and Y = 3 are on that graph, so they are values that make the equation true.
Answer:
D
Step-by-step explanation:
At Nancy's Newsstand, 3 magazines cost $18.00. How many magazines could you buy with $72.00?
Answer:
12
Step-by-step explanation:
if 3 magazines = $18
$72/$18 = 4 sets of 3
4 x 3 = 12 magazines
11.
Look at the graph.
Which describes an interval where the function is increasing?
A -00< X <-4
B-2 < x < 0
C -4 < x < 0
D5< x < 00
Answer:
i hiiiiiiiiii
Step-by-step explanation:
can i have brainlest answer