Answer:
4(x + 1)= -3x - 10
on the bracket 4( x +1)
4x + 4 = -3x - 10
collect like terms
4x + 3x = -10 - 4
7x = -14
divide both sides by 7
x = -2
Jay and kevin are shoveling the snow off a driveway. working together, they can clear the driveway of snow in 14 minutes. working alone, it would take kevin 21 minutes longer to clear the driveway of snow than it would take jay working alone. when j is the number of minutes it would take jay to clear the driveway of snow when working alone, the situation is modeled by this rational equation: how long would it take jay to clear the driveway of snow working alone?
a. 7 minutes
b. 21 minutes
c. 35 minutes
d. 42 minutes
Therefore, As a result, the answer to the given equation problem is Jay would need to work alone for 21 minutes to remove the snow from the driveway.
Define equation .
A number, a variable, or a mix of both plus certain operation symbols make up an expression. An equal sign separates two expressions that make up an equation. Word illustration The product of 8 and 3 is 11.
Here,
The formula is: 1/j +1/j+ 21 = 11/ 4.
LCM = j+21+j / j(j+21)=1/14
Thus, 2j+21 / j(j+21) = 1/14 is obtained.
14(2j+21) times itself yields j(j+21).
28j+294 expanded to j²+21j
Gather comparable terms
j²+21j-28j-294=0
j²- 7j-294=0
With the use of a graphing calculator, we have:
j = 21 or j= -14
Due to the context,
j's value cannot be negative.
As a result, the answer to the given equation's problem is Jay would need to work alone for 21 minutes to remove the snow from the driveway.
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Regina has 24 inches of ribbon for a craft project. Tommy has 2 yards of ribbon. Choose the true statement below. (1 yard = 3 feet; 1 foot = 12 inches)
Regina has 22 feet more ribbon than Tommy.
Regina has 15 feet more ribbon than Tommy.
Regina has 4 feet more ribbon than Tommy.
Tommy has 22 feet more ribbon than Regina.
Tommy has 15 feet more ribbon than Regina.
Tommy has 4 feet more ribbon than Regina. plz answer quick i give extra points and brainlyest
Answer:
f
Step-by-step explanation:
because 24 inches is 2 feet and 2 yards is is 6 feet
mother spent Php 134.25 for a box of chocolate php 385.75 for a pair of slippers and php 235.50 for a shirt as her Christmas present to her family the money she had left was 269.50 how much money did she have at first?
Before buying Christmas presents for her family, Mother had Php 1,025 initially.
How to calculate total money before spending?
To calculate the initial amount before spending add the amount spent and left after spending.
According to the given question:
Mother spent 134.25 on chocolate box, 385.75 on pair of slippers and 235.50 for a shirt.
Therefore total money spent = 134.25 + 385.75 + 235.50 = 755.50
Money left after spending = 269.50
So, the total money mother had initially = 755.50 + 269.50 = 1025
The actual amount mother had was Php 1,025
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Find the value of the expression
m³ + 7 + 1 +n
for m = 2 and n = 4.
Given:-
\( \rm{m = \bold2}\)\( \: \)
\( \rm{n = \bold4 \:}\)\( \: \)
To find:-
\({\underline{ \rm { \: m³ + 7 + 1 + n \: }}}\)\( \: \)
Solution:-
\( \rm \: m³ + 7 + 1 + n\)now , put the given values in question:
\( \rm \: ( 2 )³ + 7 + 1 + 4\)\( \: \)
\( \rm \: 8 + 7 + 1 + 4\)\( \: \)
\( \rm \: 8 + 8 + 4\)\( \: \)
\( \rm \: 16 + 4\)\( \: \)
\( \underline{ \boxed{ \rm \color{lightgreen} \: 20 \: }}\)\( \: \)
━━━━━━━━━━━━━━━━━━━━━━━━━━━
hope it helps! :)
PLEASE HELP ME
i’ll mark brainliest if you’re correct
Answer:
20
Step-by-step explanation:
on timerr huryy!!!plzz
Answer:
Answer is [6 18]
Step-by-step explanation:
4 x 2 = -8
2 x 7 = 14
-8 + 14 = 6, which will become the first element in our answer matrix
4 x 5 = 20
2 x -1 = -2
20 - 2 = 18, which will become the second element in our answer matrix
thus the answer is [6 18]
If h = 8.1 inches and k = 9 inches, what is the approximate measure of angle α?
Answer:
brainliest please, i need it and it takes one click
Answer: C. 26°
Step-by-step explanation:
Right triangle: a triangle in which one of the interior angles measures 90°.
This type of angle can be solved using trigonometrical functions. As the measure of the sides given are h and k, then we will use:
In our case, it would be:
cosa = adjacent/hypotenuse
Replacing the values:
cosa = h/k
Solving for a:
cosa-1(cosa) = cos-1(8.1/9)
a = cos-1(8.1/9)
a≈ 25.8 ≈26
Answer: C. 26°
Find the surface area of the figure. Hint: the surface area from the missing prism inside the prism must be ADDED!
To find the surface area of the figure, we need to consider the individual surfaces and add them together.
First, let's identify the surfaces of the figure:
The lateral surface area of the larger prism (excluding the base)
The two bases of the larger prism
The lateral surface area of the smaller prism (excluding the base)
The two bases of the smaller prism
The lateral surface area of a prism is given by the formula: perimeter of the base multiplied by the height.
The bases of the prisms are rectangles, so their areas can be calculated by multiplying the length by the width.
To find the missing prism's surface area, we need to consider that it is a smaller prism nested inside the larger prism. The lateral surface area and bases of the missing prism should also be included.
Once we have calculated the individual surface areas, we add them together to find the total surface area of the figure.
Without specific measurements or dimensions of the figure, it is not possible to provide a numerical answer. Please provide the necessary measurements or dimensions to calculate the surface area.
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someone please please answer this I really need help
Answer:
We have ordered pairs (60,360), (120,720), (180,1080), (240,1440), and (300,1800) as the answer.
Step-by-step explanation:
The table would look like this:
Under minutes you would place 60, 120, 180, 240, and 300.
Under calories you would place 360, 720, 1080, 1440, and 1800.
y = 6x
Multiply 60, 120, 180, 240, and 300 by 6 for 6 calories. This gives us the ordered pairs above.
HELP ME PLEASE I AM DESPERATE THIS IS ALMOST DUE!!!!!
What is the slope for this graph?
Answer: The answer is 2
Step-by-step explanation:
Please mark me as Brainiest
Answer: The answer is 2
Step-by-step explanation:
An American motor company is releasing a new car model. There will be 2 body styles (2 or 4 door) from which to choose. They also offer 3 interior packages (deluxe, luxury, or special edition) and an option of 2 drive trains (front-wheel or four-wheel drive). If a local dealer wanted one of each possible model on her sales lot, how many cars would she need to order?
Answer:
She needs to order 12 cars
Step-by-step explanation:
To find the total number of models, we just need to multiply the number of options for each choice:
body style: 2 options
interior package: 3 options
drive train: 2 options
So the number of different models is:
2 * 3 * 2 = 12 different models
So in order to have all the possible models, she needs to order 12 cars.
A company decides to examine the number of points its employees have accumulated in the last two years on their driving record point system. A sample of twelve employees yields the following observations: 0, 0, 0, 0, 1, 2, 3, 3, 4, 4, 5. 8
Find the interquartile range of this dataset.
The interquartile range of the given dataset is 3.5.
The interquartile range represents the spread or dispersion of the middle 50% of the data. To find the interquartile range, we need to calculate the first quartile (Q1) and the third quartile (Q3).
In this dataset, the first quartile (Q1) is 1 and the third quartile (Q3) is 4. The interquartile range is obtained by subtracting Q1 from Q3: 4 - 1 = 3. Therefore, the interquartile range is 3.5, indicating that the middle 50% of the employees have accumulated driving record points between 1 and 4.
To find the interquartile range, we first need to sort the dataset in ascending order: 0, 0, 0, 0, 1, 2, 3, 3, 4, 4, 5, 8. The median (Q2) is the middle value, which in this case is 3. To find Q1, we take the median of the lower half of the dataset, which is 1. To find Q3, we take the median of the upper half of the dataset, which is 4. Subtracting Q1 from Q3 gives us the interquartile range of 3.5.
This range represents the spread of the middle 50% of the data, indicating that half of the employees have accumulated driving record points between 1 and 4.
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Name 21 and 22 another way.
Answer:
B
Step-by-step explanation:
Jaquan and Chelsea make cubes during math class. The surface area of Jaquan's cube is 150 square units, and the surface area of Chelsea's cube is 96 square units.
How much larger is the volume of Jaquans cube than Chelsea’s cube
Answer:
Step-by-step explanation:
A cube has six faces, so, if the area is 96cm2, then, the Area of one of the faces will be 96cm2 ÷ 6 = 16cm2
since Area = L x W = L2, then L = √16cm2 = 4cm.
A sports store made a display by stacking baseball bats in a pile. The bottom row of the pile has 20 bats, and the top row has 14 bats. Each row has 1 fewer bat than the row below. How many bats are used in the display?
112 119 133 161
Show Work!!
Answer:
B. 199
Step-by-step explanation:
The number of the bast is 119. Then the correct option is B.
What is the area of the trapezoid?A trapezoid is a quadrilateral having two parallel sides and the other two non-parallel sides. The area of a trapezoid is the number of unit squares that can be fit into it and it is measured in square units.
The area of the trapezoid is calculated by the formula given below:-
A = ( a + b )/2 x h
Here a and b are the lengths of the two parallel sides and h is the height of the trapezoid.
Given that the bottom row of the pile has 20 bats, and the top row has 14 bats. Each row has 1 fewer bat than the row below so it will become a trapezoid with a = 14 and b = 20 and the height is 7.
The number of bats will be equal to the area of the trapezoid.
A =( a + b )/2 x h
A = ( 14 + 20 ) / 2 x (7)
A = 119 Bats
Hence, the correct option is B.
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Which is the graph of the equation y-1=- f (x-3)?
Under which circumstance can a very small treatment effect still be statistically significant?
If the sample size is small and the sample variance is large then
small treatment effect still be statistically significant.
As we know that,
Statustical significance refers to claim that a result from data generated by testing or experimentation is likely to be attributable to specific cause.
Sample size is the total number of individuals or items that comprise a sample.
And, the variance is a descriptive statistic, which falls under the category of a measure of spread.
The circumstance in which a very small treatment effect can be found to be significant is best described by option A: If the sample size big and the sample variance is small.
A large sample size will increase the probability that the results of a statistical test will yield significant results. This is why most statistical tests are accompanied by a measure of effect size. A statistically significant result associated with a very large sample size, will likely have a small effect size, an undesirable result for a researcher, as it implies one of the only reasons significant results were obtained was due to the large sample, not necessary the magnitude of the experimental effect.
Likewise, if variance is small, this will also increase the probability that the results of a statistical test will yield significant results. Variance is simply another word in statistics for the error. A decrease in error will lead to an increased probability of obtaining significant results, hence the idea that a small amount of variance will lead to an increased probability of significant results.
Hence, if the sample size is small and the sample variance is large then
small treatment effect still be statistically significant.
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Im gonna need help on this because I aint good at math LOL
The segment FG is reflected by the rule (x, y) → (-x, y). Hence, option C is the correct answer.
What are transformations?Transform the shapes on a coordinate plane by rotating, reflecting, or translating them. Felix Klein introduced transformational geometry, a fresh viewpoint on geometry, in the 19th century. In geometry, object transformations constitute the foundation for the majority of proofs. Transformations allow us to change any image in a coordinate plane. The rules of transformations can be utilised to better understand the images used in video games.
The transformation, or f: X X, is the name given to a function, f, that maps to itself. After the transformation, the pre-image X becomes the picture X. Any operation, or a combination of operations, such as translation, rotation, reflection, and dilation, can be used in this transformation.
FG has points at F(-6, -3) and G(-3, 6), and F'(6, -3) and G'(3, 6).
It is reflected by the rule (x, y) → (-x, y).
Hence, option C is the correct answer.
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no content. just help. no thoughts. just babi
Answer:
68cm²
Step-by-step explanation:
6+11=17
17÷2=8.5
8.5×8=68
Answer:
68 sq cm
Step-by-step explanation:
11+6=17
17/2=8.5
8.5*8=68
-14 could NOT be which type of number
Hey there!
ANSWER: positive
Explanation:
-14 could NOT be which type of number?
The number -14 is a negative number. A negative number has a negative sign. A positive number is just a number without any sign. Therefore, the number 14 is not a positive.
Hope this helps!
\(\text {-TestedHyperr}\)
The cost of renting a moving van is $25 a day, plus $0.35 per mile driven. Which function can be used to find the total cost in dollars of renting a van for a day and driving x miles? PLZ HELPPPP
Answer:
25+0.35x
Step-by-step explanation:
The function which can be used to find the total cost in dollars of renting a van for a day and driving x miles is total cost = 25 + 0.35x.
The total cost of renting a moving van can be calculated using the following function:
Total Cost = Daily Rental Cost + (Miles Driven × Cost per Mile)
The daily rental cost is $25 and the cost per mile driven is $0.35.
So, the function to find the total cost in dollars of renting a van for a day and driving x miles would be:
Total cost(x) = 25 + 0.35x
Where, "x" represents the number of miles driven.
Plugging in the value of "x" will give you the total cost for renting the van for a day and driving that number of miles.
Hence, total cost = 25 + 0.35x is the function which can be used to find the total cost in dollars of renting a van for a day and driving x miles.
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Kay and Karen went on a fishing trip.Kay caught 20 fish and Karen caught 12 fish. What is the value of the ratio
suppose that two dice are rolled determine the probability that the sum of the numbers showing on the dice is 8
what is the probability that the sum of the numbers showing on two rolled dice is 8 is 5/36.
To find this probability, we need to first determine the total number of possible outcomes when two dice are rolled. Each die has six possible outcomes, so there are 6 x 6 = 36 possible outcomes when two dice are rolled. To determine how many of these outcomes have a sum of 8, we can create a table or list all the possible combinations:
- 2 + 6 = 8
- 3 + 5 = 8
- 4 + 4 = 8
- 5 + 3 = 8
- 6 + 2 = 8
There are 5 possible combinations that result in a sum of 8. Therefore, the probability of rolling a sum of 8 is 5/36.
In conclusion, the probability of rolling a sum of 8 when two dice are rolled is 5/36.
The probability that the sum of the numbers showing on the dice is 8 is 5/36.
To calculate the probability, we need to find the number of favorable outcomes and divide it by the total possible outcomes. When rolling two dice, there are 6 sides on each die, so there are 6 x 6 = 36 possible outcomes.
Now, let's find the favorable outcomes where the sum is 8. The possible combinations are:
1. (2, 6)
2. (3, 5)
3. (4, 4)
4. (5, 3)
5. (6, 2)
There are 5 favorable outcomes. So, the probability of the sum being 8 is:
Probability = Favorable outcomes / Total possible outcomes
Probability = 5 / 36
The probability that the sum of the numbers showing on the dice is 8 is 5/36.
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Find the value of x in the figure below and give the reason.
Answer:
167
Step-by-step explanation:
180-130-37
=13 (sum of angles in a triangle)
180-13
=167 (angles on a straight line)
a class has 30 students. what is the probability that at least two people in this class share the same birthday?
To calculate the probability that at least two people in a class of 30 share the same birthday, we can use the complement rule, which states that the probability of an event happening is equal to one minus the probability of the event not happening.
If we assume that birthdays are uniformly distributed throughout the year (i.e., each day is equally likely to be someone's birthday), then the probability that no two people in the class share the same birthday is:
365/365 * 364/365 * 363/365 * ... * 336/365
This is because the first person can have any birthday (probability of 365/365), the second person must have a different birthday (probability of 364/365), the third person must have a different birthday than the first two (probability of 363/365), and so on, up to the 30th person, who must have a different birthday than the first 29 (probability of 336/365).
Calculating this probability gives us:
(365/365) * (364/365) * (363/365) * ... * (336/365) ≈ 0.2937
So the probability that no two people in the class share the same birthday is approximately 0.2937.
Using the complement rule, the probability that at least two people in the class share the same birthday is:
1 - 0.2937 = 0.7063
Therefore, the probability that at least two people in a class of 30 share the same birthday is approximately 0.7063, or 70.63%.
dose anyone know????
answer:
R -> R' (2,1)
T -> T' (0,2)
I -> I' (4,4)
reflection across the x axis
I need help please!!!
Answer:
56
Step-by-step explanation:
First you want to multiply -7 and -8. after you do that you'll get your answer of 56 and you can check your answer by doing 56/-7 which equals -8.
what is the value of 36x-8y^2 when x=3 and y= -6?
please explain how (-6)^2 in canceled out ):
Answer:
-6 gets canceled out because it gets squared. When you square a number, you multiply it by itself. Any negative number times a negative number results in a positive number. So instead of -36 its just 36
the variance is equal to the . a. squared value of the standard deviation b. inverse value of the standard deviation c. absolute value of the standard deviation d. square root of the standard deviation
The variance is equal to the squared value of the standard deviation.(Option a)
The variance is a measure of how spread out a set of data is. It is calculated by taking the average of the squared differences of each data point from the mean. The standard deviation, on the other hand, is the square root of the variance and measures the spread of data in relation to the mean.
Therefore, the variance is equal to the squared value of the standard deviation. Mathematically, Var(X) = σ^2, where Var(X) is the variance and σ is the standard deviation.
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HURRY PLS
2x − 3y − z if x = −2, y = 3, and z = −2
-11
11
-15
15
Answer:
-11
Step-by-step explanation:
Given:
2x − 3y − z
x = −2, y = 3, and z = −2
Solve:
Since, it given that :
x = -2
y = 3
z = -2
Thus we can substitute:
2(-2)-3(3)-(-2)
-4-9 + 2
-13 + 2
- 11
Hence, the answer is -11
Kavinsky