Answers
Cars: 1 2 3
Trucks: 4 8 12
1 : 4 = 2 : x
4 · 2 = 1 · x
8 = x
1 : 4 = x : 12
4 · x = 1 · 12
4x = 12
x = 12 ÷ 4
x = 3
Related Questions
2+2
3x5
44+5
pels help meeeeeeee
Answers
15
49
yeaaaaaaaaaaaaa
Answer:
4 15 51
Step-by-step explanation:
if you now what I mean
You are estimating the cost of optical sensors based on the resolution of the sensor. You decide to calculate the coefficient of determination (R2) as part of determining the goodness of fit of an equation. Using the preliminary calculations below, calculate the R2 and determine its meaning.
Summation of (Yi - Ybar)2 = 147172
Summation of (Yhat - Ybar)2 = 130542
Summation of (Y - Yhat)2 = 16630
a. 88.70% of the variation in the cost is being explained by the resolution.
b. 88.70% of the variation in the resolution is being explained by the cost.
c. 11.30% of the variation in the resolution is being explained by the cost.
d. 11.30% of the variation in the cost is being explained by the resolution.
Answers
Answer:
a. 88.70% of the variation in the cost is being explained by the resolution.
Step-by-step explanation:
Given :
Summation of (Yi - Ybar)2 = 147172
Summation of (Yhat - Ybar)2 = 130542
Summation of (Y - Yhat)2 = 16630
The Coefficient of determination (R²) :
Sum of Square regression (SSR) / sum of square TOTAL (SST). It gives the percentage of the dependent variable which can be explained by the regression line.
Cost is the dependent variable in this scenario.
SSR = Summation of (Yhat - Ybar)2 = 130542
SST = Summation of (Yi - Ybar)2 = 147172
Hence,
SSR / SST = 130542 / 147172
R² = 130542 / 147172
R² = 0.8870029 = (0.8870029 * 100%) = 88.7%
help if you can please :)
Answers
What is the value of s?
units
Answers
constant proportanalities in the equation y=rx 15,5 25,8 1/3 33,11
Answers
the constant of proportionality (r) in the equation y = rx is 1/3
7. Fred had 85 marbles. After a few games, he had 120% of his original number. How many
marbles does he have now?
Answers
Answer:
102 marbles
Step-by-step explanation:
100% of 85 is 85.
20% of 85 = 17
85 + 17 = 102
Hope that helps!
pls answer, show work A jacket at a clothing store is being discounted by 10%. If the jacket was originally priced at x dollars, which of the following expressions does NOT represent the final price of the jacket before sales tax is added?
A.
x – 0.10x
B.
x(1 – 0.10)
C.
x – 1.10x
D.
0.90x
Answers
Answer:
C
Step-by-step explanation:
This is the only possible correct answer because the other three all show the final price as 0.90x, which is correct since the price is the normal one minus 10 percent. C is incorrect because it suggests the normal price has a 10% tax, or extra value on it.
Use the figure 25m circle find the circumference. Round your answer to the nearest hundredth use 3.14 for *pi sign*
Answers
Please help me, thank you!
Answers
Answer:
a = 0.3
b = 0.4
c = 40%
d = 15%
Step-by-step explanation:
There are a total of 10 tick marks. So we know that 1 tick mark = 10%
a has 3 tick marks so you can say it's 0.3
b has 4 tick marks so you can say it's 0.4
c also has 4 tick marks, but it's asking for the percentage, so you get 40%
d is 1 1/2 tick marks. It's also asking for percentage. You know 1 tick = 10% and 1/2 tick = 5* so d = 15%
HELp pls il give brainliest
Answers
Answer:
1. 25
2. 3
3. 10:00 am to 10:30
4. not letting you get all the answers. Try your best though the explain the answer is refering to number 3 Good luck!
Step-by-step explanation:
2) 3 hours
3) He traveled the fastest from 10:00 through 10:30 because the line show that is is steeper than any other line meaning a greater slope. Also he traveled 10 miles in 30 minutes which is a lot more than he drove for the rest of the drive left.
Andy works at a grocery store. The manager of the store would like Andy to set up a display of apples. Part of the display will include bags of apples. If there are 39 pounds of apples in the back of the store, how many bags of apples can Andy make for the display?
Answers
Andy can make 26 bags for the display.
Step-by-step explanation:
Quantity of apples in the back of the store = 39 pounds
Quantity of apples in one bag = pounds
Here,
Number of bags = Quantity of apples in the back of the store / Quantity of apples in one bag
So, Andy can make 26 bags for the display of apples.
If this helped mark me brainliest please!! Have a good day!!
What is the value of x in the figure? Enter your answer in the box. 145 degrees and (2x + 15) degrees
Answers
Answer:
65°
Step-by-step explanation:
2x + 15° = 145° ( being vertically opposite angles)
2x = 145° - 15°
2x = 130°
x = 65°
Hope it will help :)✔
The value of x is 65 degrees.
What is Vertically opposite angle?When two lines intersect each other, then the opposite angles, formed due to intersection are called vertical angles or vertically opposite angles.
Given:
angles are: 145 and (2x +15)
As, the pair of angle are in relation of vertically opposite angle
145 = 2x +15
2x= 130
x= 130/2
x= 65 degree.
Learn more about vertically opposite angle here:
https://brainly.com/question/18045519
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PLEASE HELP I WILL GIVE BRAINLEST!!!
Answers
Answer:
option B, 13 to the 3rd power
Step-by-step explanation:
Dennis is getting balloons for his grandmother's birthday party. He wants each balloon string to be 9 feet long. At the party store, string is sold by the yard. If Dennis wants to get 56 balloons, how many yards of string will he need?
1 foot = 1/3 yard
Answers
Answer:
168 yards
Step-by-step explanation:
3 feet = 1 yard
9 (ft for each balloon) x 56 (# of balloons.) = 504 (ft of string needed in total)
504 (ft in total) divided by 3 (three feet = 1 yard) = 168 (yards of string needed)
Is 18.4 rational or irrational ?
Answers
Answer:
It is Rational.
Step-by-step explanation:
Answer:
It 18.4 is rational
Step-by-step explanation:
........
This graph shows the value of Jessica's vehicle at different years after she purchased it.
Which answer is the best estimate for the average rate of change between year 0 and year 3
A. -$6300/year
B. -16000/year
C. -$5300/years
D. -$4000/year
Answers
Answer:
B
it goes down by $16,000 in that time frame
What is 2 1/3 divided by 1/2?
Also, I have the answer but is it 7/6 or 4 2/3?
Answers
Answer:
4 2/3
Step-by-step explanation:
hope this helps you in any way
One number is 8 times
a first number.
A third number is 100 more than the
first. If the sum of the three numbers
IS 630 find the numbers.
Answers
Answer:
Step-by-step explanation:
one number = 46.24
first number = 5.78
third number = 578
B2. Write any four alchemies of nature mentioned in the passage:
(iv)
Answers
Hi can you help me pls I would very much appreciate it!!!
Answers
Answer:87
Step-by-step explanation:
Please help me with this question!!
Answers
14 apartments on 2 floors =
apartments on 1 fioor
Answers
Answer:
7
Step-by-step explanation: You would divide 14 by 2 which then equals(=) 7.
7 Apartments for each floor.
Yo someone help i'm lost
Answers
Answer:
convert the task into ratios
(1) if $24 = 4 walks
how many $ for a walk
= (24/4) $/walk
= $6 per walk
•the first one is correct
•the second is wrong, cause it interprete $12/3 walks, which is rationalized to $3 per walk
•the third one is correct, cause it can also be rationalized ($30/5walks) to $6 per walk.
also, rationalizing this would equate to 3 miles per hour (6miles/2hrs)
• one is wrong cause it's 4 miles per hour
•two is correct, it's saying 3 miles per hour (12/4)
• third, likewise is correct 3 miles per hour (9/3) miles/hrs
Can some please explain how to solve this? Thank you. 1/2(3/2y+1/3)=-1/2(y-5/2)
Answers
First, write the equation:
1/2 (3/2y+1/3) = -1/2 (y-5/2)
First, distribute 1/2 by multiplying that by 3/2y and 1/3. At the same time, distribute -1/2 by multiplying that by y and -5/2. It should look like:
3/4y + 1/6 = -1/2y + 5/4
When solving to find a variable, you want to get the variable to only one side of the equation. Add 1/2y to both sides of the equation. However, when you have to add 3/4y + 1/2y, you’ll notice that the denominators are different, meaning you have to change them to make the denominators the same. Multiply 1/2 by 2 to get 2/4. Now, add 3/4 + 2/4 to get 5/4. This is what you should now have:
5/4y + 1/6 = 5/4
Next, you want to try and get the variable number by itself. As you can see, 1/6 prevents it from being by itself on one side of the equation. Subtract 1/6 from both sides. Once again, you cannot do this because the denominators aren’t the same. Multiply 5/4 by 6 and 1/6 by 4 to get 30/24 minus 4/24, which equals 26/24. You can now simplify that to 13/12. Now your equation should look like this:
5/4y = 13/12
Divide both sides of the equation by 5/4 to get y = 13/15. That is your final answer. Hope this helped! Sorry if this answer was rlly long lol
Answer:
Step-by-step explanation:
52y−13=−12 5 2 y - 1 3 = - 1 2. Combine 52 5 2 and y y . 5y2−13=−12 5 y 2 - 1 3 = - 1 2. Move all terms not containing y y to the right side of the equation.
What are the domain and the range of this function? f(x) = log(x + 3) - 2
A. domain: (-3, ∞); range: (∞, 2)
B. domain: (3, ∞); range: (∞, 2)
C. domain: (3, ∞); range: (∞, ∞)
D. domain: (-3, ∞); range: (∞, ∞)
Answers
Domain: (3,∞) {x∣x>3} and Range: (−∞,∞) {y∣y∈R}
What are domain and the range of a function?The domain of a function includes all possible x values of a function, and the range includes all possible y values of a function.
The domain and the range of function f(x) = log(x + 3) - 2
Domain: (3,∞) {x∣x>3} since log is undefined for 0 or negative values
Range: (−∞,∞) {y∣y∈R}
Learn more about domain and the range of function here:
https://brainly.com/question/21027387
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Convert the mixed number into a improper fraction 5 1/3
Answers
Answer:
16/3
Step-by-step explanation:
Use the diagram below to find angle KNM.
Answers
Answer:
145 degree
Step-by-step explanation:
i need help on this im strugling
Answers
Answer:
D. (2, 3, 4)
Step-by-step explanation:
Substitute the answers into the equation to see if its true. If it is true, then it works.
D is the only answer where it is true.
a bag contains 3 blue and 5 red marbles find the probability of drawing 2 blue marbles in a row without replacing the first marble write as a fraction
Answers
Answer:
Step-by-step explanation:
3 Blue + 5 Red Marbles = 8 Marbles
Now 2 Blue Marbles in a row would be:
6/3
Lauren has a purse full of dimes and quarters. She has 25 less dimes than quarters. If she has a total of $10.45, which system of equations would she write to find the number of dimes, d and quarters, q?
Answers
Answer:
D(0.10) + Q(0.25) = 10.45
Q = D + 25 (or Q - D = 25)
Step-by-step explanation:
D = number of dimes
Q = number of quarters
D(0.10) + Q(0.25) = 10.45
Q = D - 25 (or D - Q = 25)
We multiply the number of dimes she has by $0.10, because that is the worth of each dime, and we multiply the number of quarters she has by $0.25 because that is the worth of each quarter. We then set that equal to $10.45, the overall value of her coins.
Because she has 25 less dimes than quarters, the number of dimes she has should be 25 less than the number of quarters she has. So the number of quarters she has should be equal to the number of dimes she has plus 25.