Answer:
95%
Step-by-step explanation:
Do the math it's pretty easy.
When the weight of laboratory grasshoppers follows a normal distribution, with a mean of 90 grams and a standard deviation of 2 grams, 95% of grasshoppers weigh between 86 and 94 grams.
What is normal distribution?Normal distribution, also known as the Gaussian distribution, is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.
Let W be the sample of weight of laboratory grasshoppers.
W follows N(90, 2)
To calculate P(86 < W < 94)
[tex]P ( 86 < W < 94 ) \\\\P ( \frac{86 - 90}{2} < \frac{W - 90}{2} < \frac{94 - 90}{2} )\\\\P(-2 < Z < 2)\\[/tex]
= 95% (approximately)
(using excel function NORM.S.DIST(2,TRUE)-NORM.S.DIST(-2,TRUE))
Learn more about normal distribution here
https://brainly.com/question/15103234
#SPJ2
Will mark as brainleist
Please help!
Answer:
y=10x-2
Step-by-step explanation:
-2 is the y-intercpt
Answer:
y=4/3x-2
Step-by-step explanation:
Round the number shown to the underlined place value 7.657
Answer choices
a.7.66
B.7.66
C. 7.67
D.7.68
Tell whether the function y = 5x − 2 is linear.
Answer:
Step-by-step explanation:
Yes, it is a linear equation
Answer:
Yes, it is Linear
Step-by-step explanation:
This is the answer because A linear equation is an equation of a straight line, which means that the degree of a linear equation must be 0 or 1 for each of its variables. In this case, the degree of variable y is 1 and the degree of variable x is 1.
Hope this helps!
what is 7/9 divided by 1/3? A.2 B.2 1/9 C.2 1/3. D.3
Answer:
It would be 2 1/3!
Step-by-step explanation:
Which expression is equivalent to: (x +9)(x+3)
a. x2 + 6x + 6
b. x2+27x+12
c. x2+ 12x+27
d. x2+ 12x + 12
Answer:
c
Step-by-step explanation:
x*x=x^2
x*9=9x
x*3=3x
9x+3x=12x
9x3=27
x^2+12x+27
Answer:
C
Step-by-step explanation:
To solve use the FOIL method, First, Outside, Inside, Last. This means to multiply the first terms, the ones on the outsides, the ones on the insides, and finally the last ones.
First, multiply x*x= [tex]x^{2}[/tex]
Then, multiply x*3= 3x
Next, multiply 9*x= 9x
Finally, multiply 9*3= 27
To simplify put all of the products together, [tex]x^{2}[/tex]+3x+9x+27, then add like terms [tex]x^{2}[/tex]+12x+27, so the answer is C.
Pleaseeeee help me with number 7 I will give Brainly to whoever comments the answer right
Answer:
- to find r3 multiply 1700 by itself 3 times
- r3 is 4913000000
- multiply by pi
- the units are kilo meters cubed
Step-by-step explanation:
ugh i suck at math but here goes, sorry if it was wrong :)
r - 5 = 4
I
Pls help I’m still in test
Answer:
R = 9
Step-by-step explanation:
Find the lengths of the sides of the triangle if the vertices of EFG are E(-2,-3), F(-2,2) and G(3,2). Find the lengths of FG
Answer:
FG=5
Step-by-step explanation:
Use distance formula FG=√(3+2)² +(2-2)²=√25=5
help me out with these questions please? 5+ 3x = 8 and also 3x - 6 =9
Answer:
1st problem-X=1, 2nd problem-X=3
sorry if this isn't right..
Answer:
x=1 and x=5
Step-by-step explanation:
5+3x=8
-5 -5
(3x=3)/3
x=1
________
3x-6=9
+6 +6
(3x=15)/3
x=5
Excellence Middle School charges $7.50 for students from all grade levels to attend the school dance. If s represents the number of seventh grade students who came to the dance and g represents the number of eighth grade students at the dance, which expression best represents the total amount of money collected for attendance at the dance?
a 7.5s+g
b s+7.5g
c 15(s+g)
d 7.5(s+g)
Answer:
the answer is c
Step-by-step explanation:
Can y’all help me please
Answer:
What is the question and possible answers
Step-by-step explanation:
Answer:
What you need help with
Step-by-step explanation:
Tell me in the comments below so i can answer like do you need help solving? help learning how to solve? Tell me.
A square has a perimeter of 52ft. What is the length of each side?
2) Anna bought 31 items at the grocery store. There was a glitch in the
computer system that caused the processing of the payment to take
longer than usual. If the total time for Anna's transaction took 2
minutes, how much time did the processing of the payment (p) take?
A)
60 seconds
B)
58 seconds
50 seconds
Eliminate
D) 45 seconds
See
Answer:
B
Step-by-step explanation:
Can someone please help me with this ill mark you as brainlist
Isosceles: side
Right: angle
obtuse: angle
scalene: side
acute: angle
equilateral: side
Hope this helps!
Segment AB with length 2.4 cm is dilated with a scale factor of 3. What is the new length of segment AB?
A. 0.8 cm
B. 2.4 cm
C. 5.4 cm
D. 7.2 cm
FREE BRAINLIEST TO EVERYONE TO ANSWERS RIGHT
Using the graph below, answer the following question.
Which of the following statements is false?
Group of answer choices
Luke can mow 5 lawns in 2.5 hours.
The graph shows a proportional relationship.
The constant of proportionalty is 2 lawns per hour.
The constant of proportionality is 1.5 lawns per hour.
Answer:
the constant of proportionality is 2 lawns per hour is the true one
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
The constant of proportionality is actually 2 lawns per hour, not 1.5
PLEASE HELP ME
9. A water pail in your backyard has a small hole in it. You notice that it has drained a total of 3.5 liters in 4 days. What is the average change in water volume each day?
10. The price of one share of ABC Company declined a total of $45.75 in 5 days. What was the average change in the price of one share per day?
11. To avoid a storm, a passenger-jet pilot descended 0.44 miles in 0.8 minutes. What was the plane’s average change of altitude per minute?
Answer: 9-11 below
Step-by-step explanation:
9. Well, we're given that the hole drains color(red)(3.5color(white)(l)"L" in color(green)(4color(white)(l)"d", so we can write the rate as
(color(red)(3.5color(white)(l)"L"))/(color(green)(4color(white)(l)"d"))
Now we perform this division, and afterward the denominator will be 1 and thus it will tell us the number of liters drained per day:
(color(red)(3.5color(white)(l)"L"))/(color(green)(4color(white)(l)"d")) = color(blue)(ulbar(|stackrel(" ")(" "(0.875color(white)(l)"L")/(1color(white)(l)"d")" ")|)
Therefore, color(blue)(0.875color(white)(l)"liters" are drained every day on average.
10. $
9.25
decrease per day
Explanation:
We can divide the total price decrease by the number of days it took to reach that decrease to find the average decrease per day:
$
45.75
5
=
$
9.25
decrease per day
11. The average change of altitude per minute would simply be the ratio of distance descended over time. That is:
average change of altitude = distance / time
average change of altitude = 0.44 mile / 0.8 minutes
average change of altitude = 0.55 mile / minute
If f(x)= -1x2+3, find f(1)
Someone help me, I'm so confused ;-;
Answer:
-1×(1)×2+3=1 This is the answer I think
What is the rate of change for the table to the right?
A)7
B)12
C)17
D)19
-6/-3 please give explanation
Answer:
2
Step-by-step explanation:
Remember the rule with negatives. -x/-y=x/y
So -6/-3=6/3
6/3=2
-6/-3= 2......................................
Write an equation in slope-intercept form of each line.
Answer:
y=2x-3
Step-by-step explanation:
formula: y=mx+b
since it is a partial variation use b in formula
help pleaseee , don’t really know how to do this :)
Answer:
x= -p+q+y
Step-by-step explanation:
-x on each side
y-x=p-q
-y on each side
-x=p-q-y
÷everything on both sides by ‐1
We have to divide by -1 because x can't be negative
x = -p+q+y
I really hope this is right because I don't want to let you down.
-LampteyJ
Factor and find the zeros k^2+7k+12
Answer:
(k+3)(k+4)
The zeros are -3 and -4
Step-by-step explanation:
k2+7k+12
The middle number is 7 and the last number is 12.
This means we need two numbers that:
Add together to get 7
Multiply together to get 12
to fit in this equation (k+_)(k+_)
in this equation, it would be 3 and 4
3+4 = 7
3*4 = 12
Now we fill in the blanks to get
(k+3)(k+4)
To get the zeros, use the equations
k+3=0 and k+4=0
You end up with
k=-3 and k=-4
John is stuck downtown Atlanta and has used is cell phone to order an Uber. The pick up fee is $20 with an additional charge of 0.25 cents per mile driven. Which equation below could be used to find out the total cost for a 30 mile trip? What is the total cost of the 30 mile trip?
Answer:
$25 + (0.25 * 30)
Step-by-step explanation:
Given that :
Cost of Uber :
Pick up fee = $25
Additional charge = 0.25 cent per mile driven
Cost of 30 mile trip :
Pickup fee + (additional charge * number of miles)
$25 + (0.25 * 30)
25 + 7.5
= $32.5
HELP ASAP, ILL GIVE BRAINLIET BUT PLEASE BE RIGHT
Given the graph below draw a line of best fit.
Gve two points on the line.
Answer:
(1,4) and (9,9)
Step-by-step explanation:
they form a straight line -- you can check with a ruler when going through these points.
7/9 - 5/6 - (-1/3) =
Which scatterplots have clusters? Check all that apply.
Answer:
the second one
there like all togehter
Step-by-step explanation:
Answer:
B and D
Step-by-step explanation:
Just did on edge2021
Match the correct graph to the story below.
You get two movies free, but then you get charged at a fixed rate per movie.
x = the number of movies seen.
y = the total money spent in dollars.
Answer:
D
Step-by-step explanation:
you have seen 2 movies before starting to go up in spending money
a bag of popcorn contains 483 calories and serves 3.5 people. How many calories are there per serving
Answer: 138 calories.
Step-by-step explanation:
Answer:
138 calories per serving
Step-by-step explanation:
Part 1
A scale drawing of a rectangular park is 5 inches wide and 7 inches long. The actual park is 250 yards long. How many yards is the length of the park?
Part 2
Use your answer from part 1 to solve the following problem.
A scale drawing of a rectangular park is 5 inches wide and 7 inches long. The actual park is 250 yards long. What is the area of the actual park?
someone please anwser ASAP its due today
Answer:
Part 1
If the actual park is 250 yards LONG, I think it means that its LENGTH is also 250 yards
Part 2
It's a proportion:
5=x
7=250
5*250:7=178.6 yards
The area is 178.6 yards wide and 250 yards long
Step-by-step explanation:
