Find the equation for 12.8x + 22.9
Answers
Answer: 1.7890625
Step-by-step explanation: If you are looking for x, there are multiple ways to find it. I think the easiest way to find it is by dividing. If you divide 22.9 by 12.8 you would get 1.7890625 (which is the answer). Hope this helped :).
Related Questions
I have 60% on my iPad and my brother has 90% on his how much more percentage I need as a fraction.
Answers
Answer:
1/3
Step-by-step explanation:
just convert it?
3/10
Step-by-step explanation:
60% is the same as 60/100
90% is the same as 90/100
90-60=30
30/100
30/100 is divided by 10 on each side to simplify it to 3/10
**The following scenario is for #12, #13, and #14 on this test.** A school chorus has 90 sixth grade students and 75 seventh grade students. The music director wants to make groups of performers, with the same combination of sixth and seventh grade students in each group. She wants to form as many groups as possible. Is this a GCF or LCM question?
A school chorus has 90 sixth grade students and 75 seventh grade students. The music director wants to make groups of performers, with the same combination of sixth and seventh grade students in each group. What is the largest number of groups that could be formed?
Answers
Answer:
The music director can make 15 groups of performers with 6 sixth grade students and 5 seventh grade students in each group.
Step-by-step explanation:
A school chorus has 90 sixth-grade students and 75 seventh-grade students.
Factor these two numbers:
Find GCF(90,75):
Now,
Therefore, the music director can make 15 groups of performers with 6 sixth grade students and 5 seventh grade students in each group.
The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.
Mountain View School Seaside School
0 5, 8
9, 8, 2, 0 1 0, 1, 2, 5, 6, 8
8, 7, 6, 5, 5, 4, 4, 3, 1, 0 2 5, 5, 7, 7, 8
0 3 0, 6
Key: 2 | 1 | 0 means 12 for Mountain View and 10 for Seaside
Part A: Calculate the measures of center. Show all work. (2 points)
Part B: Calculate the measures of variability. Show all work. (1 point)
Part C: If you are interested in a smaller class size, which school is a better choice for you? Explain your reasoning. (1 point)
Answers
For Mountain View School:
Data: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 0 + 1 + 2 + 3 + 4 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 8 + 8 + 8 + 9) / 19
= 100 / 19
≈ 5.26
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
For Seaside School:
Data: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 1 + 1 + 2 + 2 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 7 + 8 + 8 + 8 + 9) / 19
= 80 / 19
≈ 4.21
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
Now let's calculate the measures of variability, specifically the range and interquartile range (IQR).
Range: The range is the difference between the largest and smallest values in the dataset.
For Mountain View School:
Range: 9 - 0 = 9
For Seaside School:
Range: 9 - 0 = 9
Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1) and measures the spread of the middle 50% of the data.
For Mountain View School:
Q1 = 3
Q3 = 7
IQR = Q3 - Q1 = 7 - 3 = 4
For Seaside School:
Q1 = 2
Q3 = 7
IQR = Q3 - Q1 = 7 - 2 = 5
To determine which school is a better choice for a smaller class size, we can consider both the mean and the median.
Both the mean and median for Mountain View School are higher than those for Seaside School. This suggests that, on average, the class sizes at Mountain View School are larger than those at Seaside School. Therefore, if you are interested in a smaller class size, Seaside School would be a better choice
For Mountain View School:
- Median: The median class size is the middle value, which is 25.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (29 + 28 + 28 + 27 + 25 + 24 + 24 + 23 + 21 + 20 + 19 + 18 + 15 + 13 + 10) / 15 = 21.27.
For Seaside School:
- Median: The median class size is the middle value, which is 20.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (25 + 25 + 27 + 27 + 28 + 28 + 28 + 30 + 31 + 35 + 36 + 38 + 40 + 43 + 45) / 15 = 31.13.
Part B:
For Mountain View School:
- Range: The range is the difference between the largest and smallest values, which is 29 - 10 = 19.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 20 and Q3 is 28. Therefore, the IQR is 28 - 20 = 8.
For Seaside School:
- Range: The range is the difference between the largest and smallest values, which is 45 - 25 = 20.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 27 and Q3 is 38. Therefore, the IQR is 38 - 27 = 11.
Part C:
If you are interested in a smaller class size, Mountain View School is a better choice for you because it has a lower mean and median class size than Seaside School.
What is this number in standard form?
(7×100)+(4×1/100)+(8×1/1,000)
please help asap-
Answers
Answer:
9.31 * 10^4. Hope that helps
Step-by-step explanation:
Answer:
7.00048 × 102
Step-by-step explanation:
By simplifying your equation, we get 700.048.
From there, we convert it into a Standard Form Number, therefore getting 7.00048 × 102
60% of the students in class are girls. If there are 15 girls, how many students are in class?
59
Answers
If 15 is 60% of a number, it is 3/5 of the whole. Since 5 goes into 25 5 times, and 5 goes into 15 3 times, 15 is the 3/5 of 25.
I NEED THIS NOW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
For each of the figures, write Absolute Value equation in the form
|x−c=d|, where c and d are some numbers, to satisfy the given solutions:
Answers
PLEASE HELP!!!!!!! I'll give brainlest
Answers
the first one would be: circumference= 37.68 diameter= 12 area= 113.04. hope the helps!
(SAT Prep) Find the value of x.
NEED ANSWER ASAP!!
Answers
Please give me a brainliest plss
Eight Boxes each hold the same number of machine parts. Only one answer below shows the total number of parts for all eight boxes. circle your answer
A. 135
B. 128
C. 136
D.133
PLEASEE HELPP ASAP!! PLEASE HELPPPPP
Answers
Answer:
I think it is B
Step-by-step explanation:
Number line with open circle on 9 and shading to the left.
Which of the following inequalities best represents the graph above? (3 points)
a) x < 9
b) x > 9
c) x ≤ 9
d) x ≥ 9
Answers
Answer:
a) x<9
Step-by-step explanation:
Since x is all the numbers less than 9, but not including 9 (since it's an open circle instead of a filled in one), then:
a) x<9
At a recent football game of 8,450 in attendance, 150 people were asked what they prefer on a hot dog. The results are shown.
Ketchup Relish Chili
54 36 60
Based on the data in this sample, how many of the people in attendance would prefer ketchup on a hot dog?
4,225
3,380
3,127
3,042
Answers
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Answer:
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Step-by-step explanation:
round 83 960.to the nearest hundred
Answers
Answer: it is 8400
Step-by-step explanation:Find the number in the hundred place
9
and look one place to the right for the rounding digit
6
. Round up if this number is greater than or equal to
5
and round down if it is less than
5
.
84000
if u need more math answers there is a cool website free of use called "mathaway" and i use it on all of my assignments and it really helps, i hope that i was useful!
Answer:
84,000
Step-by-step explanation:
whats the surface area?
Answers
Answer:
1108 in²
Step-by-step explanation:
You want the total surface area of the pentagonal prism shown.
Base areaThe area of each of the two pentagonal bases is the sum of the area of the yellow rectangle and the area of the triangle above it. That sum is ...
A = LW +1/2bh
A = 5(12) +1/2(12)(9) = 12(5 +9/2) = 114 . . . . square inches
Lateral areaThe lateral area of the prism is the sum of the areas of the 5 rectangles. That sum will be the product of the perimeter of the pentagonal base and the distance between bases.
LA = (12 +5 +11 +11 +5)(20) = (44)(20) = 880 . . . . square inches
Total areaThe total surface area of the figure is the sum of the two base areas and the lateral area:
SA = 2(114 in²) +880 in² = 1108 in²
The surface area of the composite figure is 1108 in².
<95141404393>
PLEASE HELLPPPP!!!! I HAVE NO IDEA WHAT IM DOING
Answers
Answer:
A
Step-by-step explanation:
I think A is the answer because Its the closest one to the plot and what question is asking for
solve the correct answer and add an explanation on how jeb got his answer pls
Answers
(60 - x) + (2x - 6) + 90 = 180
x + 54 = 90
x = 36
Therefore, choice B is the value of x and Jeb’s answer is wrong.
Hope this helps!
Evaulate each expression when n = 2.3
N + 8n2 - 17=
Answers
Answer: 27.62
Step-by-step explanation:
plug in 2.3 wherever 'n' is
I'm assuming that the '2' in 8n2 is an exponent
2.3 + 8(2.3)² - 17 =
Using PEMDAS
start out with exponent since there isn't any parenthesis
(2.3)² = 5.29
2.3 + 8(5.29) - 17
move on to multiplication
8(5.29) = 42.32
2.3 + 42.32 - 17
with addition and subtraction, you do whichever comes first and since this equation starts with addition we'll start there
2.3 + 42.32 = 44.62
then the subtraction
44.62 - 17 = 27.62
Answer:
Step-by-step explanation:
The answer is 27.62
plsss help!!
150 students in Years 10 and 11 visit a school canteen.
Some students have packed lunches.
Some students have a cooked lunch.
56 out of the 89 students who have packed lunch are in Year 10.
There are 72 Year 11 students.
Work out how many Year 10 students have a cooked lunch.
Answers
Someone help me with this ASAP!
Answers
Answer:
48.1 somewhere around 36 and 57
Step-by-step explanation:
Answer:
36-57
Step-by-step explanation:
18.50 x 2.6 = 48.10, which is between those two numbers
Mackey invested some money in an account paying 6% interest for one year. She invested $1000 more than this amount in an account paying 8.5%. How much did she invest in total if the total interest earned in the year was $737.50?
Answers
Step-by-step explanation:
Let's assume the amount Mackey initially invested in the 6% account is x dollars.
According to the given information, Mackey invested $1000 more than x in the 8.5% account, which means she invested (x + $1000) dollars in that account.
The total interest earned from the 6% account would be 0.06x dollars, and the total interest earned from the 8.5% account would be 0.085(x + $1000) dollars.
The total interest earned in the year is given as $737.50, so we can set up the equation:
0.06x + 0.085(x + $1000) = $737.50
Simplifying the equation:
0.06x + 0.085x + 0.085($1000) = $737.50
Combining like terms:
0.145x + $85 = $737.50
Subtracting $85 from both sides:
0.145x = $737.50 - $85
0.145x = $652.50
Dividing both sides by 0.145:
x = $652.50 / 0.145
x ≈ $4500
Therefore, Mackey initially invested approximately $4500 in the 6% account, and she invested $1000 more, which means she invested a total of $5500.
$4500
$4500
$4500
$4500
Which scenario can be modeled by the linear function
y = -15x + 500?
A. The temperature on Jupiter is
15℉ and increases by 500℉ every day.
B. There is a population of 500 giraffes in Western Africa that decreases by 15 giraffes each year.
C. A carpet cleaning service charges $500 plus an additional $15 for every hour.
D. A membership fee for a movie streaming service is free, but each rental costs $15.
Answers
Pls help me to find the median and mode, with solution pls
Answers
Answer:
Mode=32
Mean=32
Median=32
Step-by-step explanation:
Mode=highest frequency
Mode=10
Mean=£fx
£f
Mean=1280
40
=32
Median=n/2
=40/2
=20
median=32
Median-32
Hope this helpsssss
Find the value of x please :)
Answers
Answer:
32 degrees
Step-by-step explanation:
The sum of all angles in a triangle is 180 degrees.
A right angle (The one marked by a small square on the bottom left) measures 90 degrees.
You're given that the other two angles in the triangle measure 58 and x degrees.
To find x, we'll find the sum of all angles, and equate it to 180.
The sum of all angles = 90 + 58 + x = 148 + x degrees
\(148 + x = 180 \text{ // -148}\\\cancel{148 -148} + x = 180 - 148\\x = 32^{\circ}\)
Sorry, my lighting is bad! I need the answer to this question ASAP!
Answers
Answer:
it should be 130
Step-by-step explanation:
triangles equal 180 degrees and two angles equal 50 so 180-50=130
Sorry if it’s incorrect good luck
4-5g>39
The answer???
Answers
Answer:g<-7
Step-by-step explanation:
4-5g>39
-4 from both side
-5g>35
divide -5 from both side
g<-7
if you divide the negative number the sign will switch <
You can also explain what makes it different by representing each width and height pair with a ratio.
In one version of a trail mix, there are 3 cups of peanuts mixed with 2 cups of raisins. In another version of trail mix, there are 4.5 cups of peanuts mixed with 3 cups of raisins. Are the ratios equivalent for the two mixes? Explain your reasoning.
For this object, choose an appropriate scale for a drawing that fits on a regular sheet of paper:
A person
1 in : 1 ft
1: 1000
1 ft: 1 mile
1: 100,000
1: 10,000,000
1 mm: 1 km
1 cm : 1 m
For this object, choose an appropriate scale for a drawing that fits on a regular sheet of paper:
A football field (120 yards by 53 yards)
1: 100,000
1 cm : 1 m
1: 1000
1: 10,000,000
1 in : 1 ft
1 ft: 1 mile
1 mm: 1 km
For this object, choose an appropriate scale for a drawing that fits on a regular sheet of paper:
The state of Washington (about 240 miles by 360 miles)
1: 1000
1 mm: 1 km
1 cm : 1 m
1: 10,000,000
1 ft: 1 mile
1 in : 1 ft
1: 100,000
For this object, choose an appropriate scale for a drawing that fits on a regular sheet of paper:
The floor plan of a house
1 ft: 1 mile
1 in : 1 ft
1: 1000
1: 10,000,000
1 mm: 1 km
1 cm : 1 m
1: 100,000
For this object, choose an appropriate scale for a drawing that fits on a regular sheet of paper:
A rectangular farm (6 miles by 2 mile)
1: 10,000,000
1: 1000
1 cm : 1 m
1: 100,000
1 ft: 1 mile
1 mm: 1 km
1 in : 1 ft
Which scale is equivalent to 1 cm to 1 km?
1 to 1000
10,000 to 1
100,000 to 1
1 to 1,000,000
1 to 100,000
Answers
Answer:
Ratios are Equivalent
Step-by-step explanation:
In first one there are 3 cups of peanuts mixed with 2 cups of raisins.
Ratio of peanut to raisins is 3:2 or 1.5
For second trail mix there is 4.5 cup of peanuts mixed with 3 cups of raisins
Ratio of peanuts to raisins is 4.5:3 or 1.5
They are both 1.5
BC = ?
Round your answer to the nearest hundredth
Answers
1) sin50=x/3
2) 3 * sin50
3) 2.298133329 ≈ x
Which list orders the numbers from least to greatest?
Negative 2.4, negative 1.5, negative 2 and one-fourth, negative 3, negative 1 and one-eighth
A number line going from negative 4 to positive 4.
Negative 1 and one-eighth, negative 1.5, negative 2 and one-fourth, negative 2.4, negative 3
Negative 3, negative 2.4, negative 2 and one-fourth, negative 1.5, negative 1 and one-eighth
Negative 3, negative 2 and one-fourth, negative 2.4, negative 1 and one-eighth, negative 1.5
Negative 1.5, negative 1 and one-eighth, negative 2.4, negative 2 and one-fourth, negative 3
Answers
Negative 3, negative 2.4, negative 1.5, negative 2 and one-fourth, negative 1 and one-eighth
Hope my answer helps you✌️
if a * b = a^2 - b^3, then what is the value of 3 * -2
Answers
Answer: -6
Step-by-step explanation:
3*-2=-6
25 1/4 divided by 3/4 simplified and as a fraction
Answers
please write a function for the points (1/3,0) (-2 3/4,0) and (0,-5) and explain the steps.
thank you!
Answers
The function for the points are y = -15x - 5
How to determine the functionFrom the information given, we have that;
The points are;
(1/3,0) (-2 3/4,0) and (0,-5)
Using the point-slope form of a linear equation, we have;
y - y₁ = m(x - x₁)
Such that;
m is the slope of the liney - y₁ and (x - x₁) are the pointsUsing (1/3, 0) and (0, -5), we have that the slope is;
m = (0 - (-5))/0 -1/3)
expand the bracket
= 5 / (-1/3)
= -15
Now, take any of the given points and substitute the values
Using (1/3, 0), we get;
y - 0 = -15(x - 1/3).
y = -15x - 5.
Learn more about functions at: https://brainly.com/question/25638609
#SPJ1
The function for the points solved by (1/3,0) (-2 3/4,0) and (0,-5) solved by point slope form is \(a=-15b-5\)
We have given the points:
(1/3,0) (-2 3/4,0) and (0,-5)
Using the formula of linear equation
\(a-\)\(a_{1}\)\(=x[b-b_{1}]\)
Where we will consider (1/3,0) = \(a-a_{1}\) and (0,-5) = \(b-b_{1}\)
that is 1/3 = \(a\), 0 = \(a_{1}\) and
0 = \(b\), -5 = \(b_{1}\)
\(x\) refers to the slope of line (take any variable)
Now for finding the value of \(x\),
\(x=a-a_{1}/b-b_{1}\)
inserting the values,
\(x=[0-[-5]]/[0-1/3]\\x= -15\)
Substitute the value of \(x\) in the equation
\(a-0=-15[b-1/3]\)
By simplifying the equation, we get
\(a=-15b-5\)
To know more about functions and points:
https://brainly.com/question/30721594