whats the formula?
Step-by-step explanation:
Mrs. Lofton created a histogram of her first two test grades for her class. if the combines the two tests, what percentage of the grades were below 70. (image below)
Answer: the answer is 84
Step-by-step explanation:
Televisions are on sale for 40% OFF the original price of $600. After tax (8.5%) is applied, what is the final price?
First, determine what is 40% of $600. Multiple 40 (as a decimal) by 600.
0.4 x 600 = 240
Therefore, the discount is $240 off $600.
Subtract the two values to find price (before tax): 600 - 240 = 360
So the TV will cost $360 before tax.
The tax is 8.5%. Multiply 8.5 as a decimal by 360 to find the amount of tax added.
0.085 x 360 = 30.6
Add 30.6 and the price before tax to find the final price.
30.6 + 360 = 390.60
Therefore, the final price of the TV is $390.60
How do you solve a 3x3 system of equations.
Answer: well it depends on what comes first but 9
Step-by-step explanation:
Rewrite in simplest terms: 4(-5u +3) – 4(8u - 1)
Answer:
You distribute then combine
your answer is -52u+16
Step-by-step explanation:
Does anyone stan Twice??
Answer:
This is literally me.
Step-by-step explanation:
2. What is the difference?
Complete the subtraction sentence.
5-5=
Answer:
0
Step-by-step explanation:
(-1) + (-1) + (-1) + (-1) + ... 500 times =
(a) 500
(b) 1
(c) -1
(d) -500
Answer:
D
Step-by-step explanation:
(-1) + (-1) = -2... so 500 times... it would be -500.
I need to know if it’s parallel, perpendicular or neither please explain as well.
Analysing the Question:
We are given the following equations:
x - y = 4
x + y = 9
writing these equations in slope-intercept form
y = x - 4
y = -x + 9
the general form of the slope-intercept equation is : y = mx + b (where m is the slope and b is the y-intercept)
Hence, we can say that the for Equation 1:
Slope = 1
y-intercept = -4
For equation 2:
Slope = -1
y-intercept = 9
Finding if the lines are Perpendicular, parallel or neither
If the slope of the lines is equal, the lines are parallel
If the slope of the lines is the additive inverse (negative) of each other, the lines are perpendicular
Since the slopes of the 2 lines are the additive inverse (negative) of each other, the lines are perpendicular [slope 1 = 1 , slope 2 = -1]
For a biology project, you measure the weight in grams and the tail length in millimeters of a group of mice. The correlation is r = 0.52. If you had measured tail length in centimeters instead of millimeters, what would be the correlation?
Answer:
The correlation coefficient is r = 0.52
Step-by-step explanation:
From the question we are told that
The correlation coefficient is r = 0.52
Generally correlation has no unit and is not affected by unit (i.e it show the ratio between two quantities )
Hence a change of the unit of measurement of length from cm to mm will not affect the correlation coefficient r hence the value will still remain r = 0.52
Answer:
Step-by-step explanation:
____
Solve √3x+4 −2=3
Answer:
[tex]\sqrt[/tex]3x+4=5
Step-by-step explanation:
3x+4=25
3x=21
x=7
Gordon types 2,448 words in 36 minutes. Find the unit rate.
Answer: 68 words
Step-by-step explanation: 2448 / 36 = 68
Answer:
68 Words
Step-by-step explanation:
68 words in a minute if you divide 2448 by 36
PLEASE ANSWER ASAP I ONLY HAVE 30 MINUTES please
Which of the following have a value equal to |37|? Select all that apply.
A. –37
B. |–37|
C. 0
D. –(–37)
E. 37
Answer:
B, D, E
Step-by-step explanation:
Absolute value is always positive so the absolute value of 37 is 37.
and |-37| would equal 37.
HOpe this helps!!
Please help ASAP this is timed
Answer:
the answer is 30 with 75 kids voting for drinks in total
Answer:
30 students
Step-by-step explanation:
45 divided 3 (the numerator of 3/5) is 15 so 1/5 is 15. 5 minus 3 =2. so 2/5 students picked sprite. and 15 times 2 equals 30. easy
Kent earns $12.75 per hour at his part time job. Kent worked 18 hours last week. This week he spent 1/3 of his money on car repairs. How much did the repairs cost?
ANSWERS TO THE WHOLE QUIZ:
1. 13.23
2. 1/2
3. 0.25
4. 31.16
5. 76.50
Your Welcome and have a great day!
( I had to fail the quiz to give the answers)
ms.khan ask her math students to find an equation of a line which has a graph parallel to line y=-2x+1 and which passes through the point (4,-2) n
2x+y=0
2x+y=6
x-2y=-10
x-2y=8
Answer:
y=-2x+b
-2=-8+b
6=b
y=-2x+6
so
2x+y=6
anybody know this and can help me ?
How much difference do a couple of weeks make for birth weight? Late‑preterm babies are born with 3434 to 3636 completed weeks of gestation. The distribution of birth weights (in grams) for late‑preterm babies is approximately ????(2750,560).N(2750,560). What is the probability that a randomly chosen late-preterm baby would have a very low birth weight, less than 15001500 grams? (Use technology and enter your answer rounded to four decimal places.)
Answer:
0.0128
Step-by-step explanation:
(Use technology and enter your answer rounded to four decimal places.)
We apply the z score formula to this question
z = (x-μ)/σ,
where x is the raw score
μ is the population mean
σ is the population standard deviation.
We are given: N(2750,560)
x = 1500 grams, μ = 2750 grams, σ = 560 grams
= z = 1500 - 2750/560
z = -2.23214
Determining the Probabilty value from Z-Table:
P(x < 1500) = P(z = -2.23214)
= 0.012803
Approximately to four decimal places = 0.0128
The probability that a randomly chosen late-preterm baby would have a very low birth weight, less than 1500 grams is 0.0128.
How would you write 2 × 2 × 2 using exponents?
Answer:
2³
Step-by-step explanation:
2×2×2...there are 3 2s which is 2³
Help please ASAP I’m not good at this
Answer:
y = 0.7x + 12
Step-by-step explanation:
Divide and check your answer. 6/938
what is the rectangular prism of 2 units and 7 1/3
Answer:
it could be 14 2/6 units squared
Step-by-step explanation:
idkI don’t know but for area is units squared and for volume it has units cubed
Write 45%of m as an expression
Answer:
nh
Step-by-step explanation:
How can you represent a rate with 100 as the whole?
Please need help
Answer:
How to Calculate a Rate. "Rate" simply means the number of things per some other number, usually 100 or 1,000 or some other multiple of 10. A percentage is a rate per 100. Infant mortality rates are calculated per 1,000.
Step-by-step explanation:
write an equivalent fraction of 4/5 with the denominater 25
Answer:
20/25
Step-by-step explanation:
to get to a dinominator of 25, we have to multiply 5 by 5. so then we do 4 x 5 so now it is 20/25
In one problem, he gave her a store receipt that listed 72 identical items, each the
same price, for a total cost of
$ * 67.9*
Bryn's Grandpa covered the first and last digits of the total price on the receipt
with stars.
Determine the values of the digits that Bryn's Grandpa covered.
Answer:
The first covered digit = x = 3
The last covered digit = y = 2
The total price on the receipt = $367.92
Step-by-step explanation:
Given data:
total cost = $ * 67.9*
First we check for the multiples of 72
9 × 8 = 72
Let
the first covered digit be denoted by x
the last covered digit be denoted by y
Solution
First we find the last covered digit
If a number should be divisible by 8,
It must be a multiple of 8
From the given price:
The last 3 digits = 79*
number in multiples of 8
7.9* = 7.20 + 0.64+ 0.08
7.9* = 7.92
Therefore, the last two digit is 2.
Next We find the first covered digit.
If a number is divisible by 9, it is a multiple of 9
The first digit = x would be determined as:
= x + 6 + 7 + 9 + 2
= x + 24
= x + 24
multiple of 9 nearer to 24 = 27
27 = x + 24
x = 27 - 24
x = 3.
Who can help me with 9th grade math and got zoom?
Answer:
Me, I'm in 12th grade so sure. ^‿^
Step-by-step explanation:
!!!!!1ILL GIVE 25 POINTS AND BRAINLIEST JUST PLEASE B((((((((((((((!!!!!
It takes Daphne 25 minutes to assemble a model plane. During her work
minutes for lunch and one 15 minute break. Which inequality could Daphne use to determine the number
of model planes, p, she can assemble in her 8 hour work day?
A. 25p – 45 > 8
B. 25p + 45 2 8
C. 25p – 45 < 480
D. 25p + 45 < 480
Answer:
C
Step-by-step explanation:
Answer:
25p+45<480
Step-by-step explanation:
Question 1
1 pts
A high school gym teacher records how much time each student requires to complete a one-mile run.
This
is an example of measuring a continuous variable.
Answer:
True : It is an example of a continuous variable
Step-by-step explanation:
Numerical variables acn be classed as either being discrete or continuous based on whether the values in the data set are finite and countable or not.
Discrete variables are characterized by possessing a finite number of possible values which are countable and usually do not involve decimal numbers in between successive whole numbers.
On the other hand continuous variables are non finite and usually contains a lot of points in between possible whole numbers such as in the scenario above, the race time for the students take up any number within minutes, seconds and milliseconds. Hence, making the possible Numner of values impossible to predict or state.
Number 2 : How old is Geraldo?