Answer:
A.)
Lower Value = 295
Upper Value = 485
B.)
Lower Value = 200
Upper Value = 580
C.)
Lower Value = 105
Upper Value = 675
Step-by-step explanation:
Given that mean (M) = 390
Standard deviation (σ) = 95
Lower Value = mean value - number of standard deviations specified
Upper Value = mean value + number of standard deviations specified
a. Μ ± 1σ of the observations lie between what two values?
Lower Value = 390 - 1(95) = 295
Upper Value = 390 + 1(95) = 485
b. Μ ± 2σ of the observations lie between what two values?
Lower Value = 390 - 2(95) = 200
Upper Value = 390 + 2(95) = 580
c. Μ ± 3σ of the observations lie between what two values?
Lower Value = 390 - 3(95) = 105
Upper Value = 390 + 3(95) = 675
A container when 3/8 full,holds 15 litres of oil.How many litres of oil would be needed to fill 5 similar containers?
Answer:
200l
Step-by-step explanation:
3/8 = 15l
1/8 = 15l/3
1/8 = 5l
1 = 5l × 8
1 = 40l
5 = 5×40l
5 = 200l
I need brainliestttttt
Please Help! Will give 15 points!!!
4. Find the sum of (0.75x - 12y) and (-5 + 6y - 0.5x)
Show each step of your work.
5. Which expression(s) is/are equivalent to 8-2(5x-3). Show your work to justify your decision.
a. 6(5x-3)
b. 8-10x+6
c. 8-(10x-6)
d. 8-10x-6
e. -10x+14
6. In math class, students are attempting to simplify the expression written on the board: 7 - 2 (3 - 8x)
Three students make an attempt at a first step:
Len writes: 5 (3 - 8x)
Monty writes: 7 - 2 (-5x)
Nailany writes: 7 - 6 - 16x
Do you agree with any of the students? Explain your reasoning for each one.
Answer:
yo i only got number 4 for you but here it goes.......: 0.70x+18y-5
Step-by-step explanation:
(0.75x - 12y) + (-5 + 6y - 0.5x)
regroup to the variables : (0.70x-0.5x) + (12y+ 6y-5)
put it together: (0.70x)+(18y-5)
you cant add unlike terms so you remove the parenthesies and your done.
will give BRAINLIEST!
Answer:
3&5
Step-by-step explanation:
Answer:
the 3rd or 4th
Step-by-step explanation:
20^2 (20 squred) = ?
Answer:
400
Step-by-step explanation:
20 squared is basically 20 x 20
20 x 20 = 400 because 2 x 2 = 4 and then move the two 0s over to get 400
Hope this helps! Have a nice day :)
Write the equation in slope intercept form (y=mx+b) of a line that passes
through the points (1,7) and (3,-5).
Answer:
y = -6x +13
Step-by-step explanation:
slope = rise over run
-12 rise for 2 run
slope = -6
y intercept = 13
help immediate i will mark you brainliest
Answer:
What's the question?
The ratio of boys to girls in Ms. Alper’s math classes is 5 ∶ 7. If there are 60 boys in all of her classes, how many girls are there ?
Plz help im so dumb ;-;
Answer:
I think it's 80 I'm sorry if I'm wrong
Answer:
the person above is incorrect I think it may or may not be 75
Question 2 (1 point)
In a football game, all for the home team's 26 points came from 7-point touchdowns and 3-point field goals. The team scores six times. Write
and solve a system of equations to find the number of touchdowns and field goals that the home team scored.
Answer:
(2,4)
Step-by-step explanation:
Equation 1:
x+y=6(for the 6 times they scored)
x=-y+6
Equation 2:
7x+3y=26 (for the 7 point touchdowns, and 3 point field goals.)
7(-y+6)+3y=26(replace x with -y+6)
7y+42+3y=26(distrubite property)
-4y+42=26
-4y= -16
y= 4
Now that we know that y is equal to 4:
x+4=6
x=2
The number of touchdowns and field goals that the home team scored are 2 and 4 respectively
Let the number of points touch down be xLet the number of -point field goals be yIf the team scored six-time, this is expressed as;
x + y = 6
y = 6 - x ........................ 1
If in the football game, all for the home team's 26 points came from 7-point touchdowns and 3-point field goals, this is expressed as;
7x + 3y = 26 ...................2
Substitute equation 1 into 2 to have:
7x + 3(6-x) = 26
7x + 18 - 3x = 26
4x + 18 = 26
4x = 26 - 18
4x = 8
x = 2
Recall that y = 6 - x
y = 6 - 2
y = 4
Hence the number of touchdowns and field goals that the home team scored are 2 and 4 respectively
Learn more on simultaneous equations here: https://brainly.com/question/6597041
For a craft each student will need five rubber bands.There.There are eight students.Rubber bands come in bags of nine. How many will be needed?How many rubber bands will be left over?
Answer:
40 rubber bands are needed
5 rubber bands will be left from 5 bags of of rubber band
Step-by-step explanation:
Each student will need five rubber bands.
There are eight students
Total rubber bands needed = rubber bands per student × number of students
= 5 × 8
= 40
Total rubber bands needed = 40
Rubber bands come in bags of nine.
Number of bags needed = Total rubber bands needed / number of rubber bands in each bag
= 40 / 9
= 4.44 bags
It is impossible to get decimal number of rubber bands bag, so, the next whole number after 4 is 5
5 rubber bands bags will be bought which = 5 × 9
= 45 rubber bands
Only 40 rubber bands are needed
Left over rubber bands = 45 - 40
= 5 rubber bands
What is the solution to the system of linear equations shown on the graph?
Group of answer choices
A)0
B)(-2, 2)
C)The system has no solution.
D)The system has infinitely many solutions.
Answer:
oof thats hard but i think it B OR C
Step-by-step explanation:
TPPC 22345 is a non-real time plan. What does non-real time mean?
I need help plz asap
================================================
Explanation:
Check out the diagram below.
Segment BD cuts angle EBC in half
So the two smaller pieces DBC and DBE are congruent. Let's call them x.
Let's make y = angle EBA.
Note how the diagram shows the angles x, x, and y forming a straight angle. So we can say
x+x+y = 180
2x+y = 180
y = -2x+180
We'll use this later.
For now, focus on triangle DEB. Angle E is 90 degrees and angle B is x.
D+E+B = 180
28+90+x = 180
x+118 = 180
x = 180-118
x = 62
Which means
y = -2x+180
y = -2*62+180
y = -124+180
y = 56
Now focus on triangle BEA. We have B = 56, E = 90 and A = z
B+E+A = 180
56+90+z = 180
146+z = 180
z = 180-146
z = 34
which is the measure of angle A.
find the measure of y
please
Answer:
y=140
Step-by-step explanation:
if it's an option
PLEASE HELP I REALLY AM BAD AT MATH. I JUST NEED THIS. NO ONE HAS ANSWERED MY PAST QUESTIONS WHILE I ANSWER THERES ;(
4ABC is isosceles with AB = AC. All three side lengths of 4ABC and also
altitude AD are positive integers.
If the area of 4ABC is 60 cm2
, determine all possible perimeters of 4ABC.
Note: You may use the fact that the altitude of an isosceles triangle drawn to
the unequal side bisects the unequal side.
Thank you for ignoring this friendly request of help :(
BTW U GET 20 POINTS IF U ANSWER ME
To calculate the perimeter of an isosceles triangle, the expression 2s + b is used, where s represents the length of the two congruent sides and b represents the length of the base.
I may not know the answer but I know how to get it just follow the rule. Sorry if I didn’t help.
Help!!!
Find the total cost to the nearest cent. $18 breakfast; 7% tax
Answer:
19.26
Step-by-step explanation:
What is the product of d – 9 and 2d2 + 11d – 4?
Answer:
yes
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
What is 1/3 divided by 2
Answer:
0.16666666666 so just put 0.16
Step-by-step explanation:
Can you explain LCM and GCD please?
(Least Common Multiple and Greatest Common Divisor)
Answer:
I got you lol
Step-by-step explanation:
Let's say you want to calculate the GCD and LCM of two numbers: 12 and 28. First, determine the prime factorizations of 12 = 2 × 2 × 3 and 28 = 2 × 2 × 7. The GCD is the string that is present in both sets of factorizations, i.e., 2 × 2 = 4. The LCM is the greatest power of all exponents; 2 × 2 × 3 × 7 = 84.
simply put, The Least Common Multiple (LCM) of two integers a and b, usually denoted by LCM (a, b), is the smallest positive integer that is divisible by both a and b.
GCD is the largest number that divides 2 numbers equally and gives remainder 0.
The height reached by a model rocket can be calculated using the equation h= -16t2 + vt +
where t is the time the rocket is in flight, vis the rocket's velocity, and n is the rocket's beginning
height.
Calculate the height, h at 3 seconds given that the rocket travels 85 feet per second and starts on a
launch pad 15 feet off the ground.
Knowns:
t = 3 seconds
v = 85 feet per second
n = 15 feet
If we plug all those values in, our Formula becomes h= (–16.32) + (85.3) + (15).
Solve for h
Answer:
Step-by-step explanation:
9.0
The height (h) reached by model rocket will be equal to 126 ft.
It is given that the height reached by a model rocket can be calculated using the equation h = - 16 [tex]t^{2}[/tex] + ( v × t ) + n
We have to calculate the height (h) at 3 seconds.
What is algebra ?
Algebra is the branch of mathematics that deals with various symbols and the arithmetic operations such as multiplication , division , etc.
As per the question ;
h = - 16 [tex]t^{2}[/tex] + ( v × t ) + n ---------- Equation 1
∵ t = time rocket is in flight = 3 seconds
v = velocity at which rocket travels = 85 ft. per second
n = height of rocket at beginning = 15 ft
Putting these values in equation 1 , we get.
h = - 16 × ( 3² ) + (85) × (3) + 15
h = - 16 × 9 + 255 + 15
h = -144 + 270
h = 126 ft.
Thus , the height (h) reached by model rocket will be equal to 126 ft.
To learn more about algebra click here ;
https://brainly.com/question/19253676
#SPJ2
i just need the last 2 boxes. PLZ HELP
Answer: first box: 1/8
second box: 4
Step-by-step explanation:
bologna is hot dog pancakes! ;)
Answer:
cool
Step-by-step explanation:
I have no idea what this means but good on u:)
Answer: haha is it weird that i want bologna now lol
Step-by-step explanation: have a nice night :)
Select the correct answer
Which statement is true about the slope of the graphed line?
A the slope is negative B the slope is positive. C the slope is negative D the slope is undefined
Answer:
the slope is positive B
Answer: The answer is B hope that helps you!!
Step-by-step explanation:
A bottle contains 3/4 gallon of fruit punch. If 6 people share the fruit punch equally, how much fruit punch does each person get ?
Answer:
each person should get 0.125 of the gallon
Step-by-step explanation:
Answer:
2/9
Step-by-step explanation:
HELP ASAP I ONLY HAVE 6 MINUTES LEFT!!
I'll give brainliest to the answer I like best!!
find the radius diameter circumference and area of the circular object (one of these measurements is given in the problem). Round all answers to the nearest whole number.
The tires on a mining truck are 14 ft tall.
Radius: _____ft
Diameter: _____ft
circumference: _____ft
area: _____ft
Step-by-step explanation:
diameter=14ft
radius=7ft
circumference=2πr
=2×3.142×7
=43.988ft
=44ft(to the nearest whole number)
Area= πr2
=3.142×7×7
=153.958ft
=154ft(nearest whole number)
Which Figure is a rotation of the Blue Figure?
A
B
C
D
I don’t understand
2(2a-7b) do we put it as 4a-18b or 4a-18
Answer:
2(2a-7b) = 4a-14b
Step-by-step explanation:
You have to multiply both the numbers inside brackets (2a,7b) with 2 .....
The sum of three consecutive integers is 108. What are the integers
Answer:
35, 36, and 37
Step-by-step explanation:
We know our answer is correct because 35 + 36 + 37 equals 108.
Answer:
35,36,and 37
Step-by-step explanation:
Write and solve an equation for this problem.
Wakaba buys some granola bars at $0.50 each and energy drinks at $2 each for a group hike. She buys twice as many granola bars as energy drinks. If she spends $27 in total, how many granola bars and energy drinks does she buy?
Let x= the number of energy drinks
Answer:
Wakaba bought 18 granola bars and 9 energy drinks.
Step-by-step explanation:
From the information given, you can write the following equations:
0.50x+2y=27 (1)
x=2y (2),where:
x is the number of granola bars
y is the number of energy drinks
You can replace (2) in (1) and solve for y:
0.50(2y)+2y=27
y+2y=27
3y=27
y=27/3
y=9
Now, you can replace the value of y in (2) to find x:
x=2(9)
x=18
According to this, the answer is that Wakaba bought 18 granola bars and 9 energy drinks.
The temperature in Australia is 95 degrees and decreasing at a rate of 4 degrees per day. The temperature in the US is 40 degrees and is increasing at a rate of 5 degrees per day. For how many days will Australia be warmer or the same as the US?
Answer:
For 6 days
Step-by-step explanation:
Here, we want to find the number of days at which Australia will have a bigger temperature or the same temperature as US
95 degrees, decreasing at 4 degrees per day
40 degrees, increasing at a rate of 5 degrees per day
let the number of days be x
In x days, temperature of Australia will be 95-4x
In x days, temperature of US will be 40 + 5x
For the temperature to be same;
40 + 5x = 95 - 4x
95-40 = 5x + 4x
9x = 55
x = 55/9
x = 6.111 which is approximately 6
For 6 days, the temperature in Australia will be warmer , on the 7th day, the US temperature becomes warmer
Addison's office recycled a total of 12 kilograms of paper over 6 weeks. After how many weeks will Addison's office recycle 10 kilograms of paper?
Answer:
5 weeks
Step-by-step explanation:
is she recycles 12 in 6 weeks that's 2 per week. So 2x5=10