Solve 8 = 2x + 4.
X = -4
X=-1
x = 0
X=7
Answers
Answer:
x = -1
Step-by-step explanation:
Write it in exponential form, 2^3 = 2^x+4
Since base is the same, Set the exponents equal, 3 = x + 4
Move the terms, variable goes to the left side and change the sign -x + 3 = 4
Subtract and calculate, -x = 1
Change the signs on both sides, x = -1
Answer:
x=-1
Step-by-step explanation:
i took the test
Related Questions
PLEASE HELP ASAPPP WILL MARK BRAINLIEST!!!
Polygon ABCD with vertices at A(−4, 6), B(−2, 2), C(4, −2), and D(4, 4) is dilated using a scale factor of one eighth to create polygon A′B′C′D′. If the dilation is centered at the origin, determine the vertices of polygon A′B′C′D′.
Answers
Answer:
The third option
Step-by-step explanation:
Multiply all coordinates by 1/8 or 0.125
So
A(−4, 6) → A(-0.5, 0.75) when both points are multiplied by 0.125
B(−2, 2) → B(-0.25,0.25) when both points are multiplied by 0.125
We could go on and find all the values but the third option is the only one that has the right values so it has to be correct
Vertex A′: (x', y') = (kx, ky) = (1/8) * (-4,6) = (-1/2, 3/4)
Therefore, the coordinates of A′ are (-1/2, 3/4)
Vertex B′: (x', y') = (kx, ky) = (1/8) * (-2,2) = (-1/4, 1/4)
Therefore, the coordinates of B′ are (-1/4, 1/4)
Vertex C′: (x', y') = (kx, ky) = (1/8) * (4,-2) = (1/2, -1/4)
Therefore, the coordinates of C′ are (1/2, -1/4)
Vertex D′: (x', y') = (kx, ky) = (1/8) * (4,4) = (1/2, 1/2)
Therefore, the coordinates of D′ are (1/2, 1/2)
So, the vertices of dilated polygon A′B′C′D′ are (-1/2, 3/4), (-1/4, 1/4), (1/2, -1/4), and (1/2, 1/2).
Which of the following situations models a geometric sequence?
~The amount of cell phone users increases by 33% every year.
~Amount of cakes in a bake sale increases by 3 each year the fundraiser is held
~Uranium loses half of its weight every 415 years.
~A family of rabbits doubles in size every 3 months.
~A car drives at a constant speed of 58 mph.
~The number of students in a school increases by 122 each year.
~The number of pieces of chalk in a classroom decreases by 10 throughout the school year.
(If you can explain what geometric sequences are that'd be really helpful too)
Thanks~ :D
Answers
Answer:
1,3 and 4 because the amount of change between the amount of time differs
Step-by-step explanation:
Answer:
1.The amount of cell phone users increases by 33% every year.
2.Uranium loses half of its weight every 415 years.
3.A family of rabbits doubles in size every 3 months.
Step-by-step explanation:
We will check each and every option given here.
1) Amount of cell phone users increases by 33% every year.
Its a geometric sequence because the number of users are increasing exponentially every year.
2) Amount of cakes in bake sale increases by 3 each year the fundraiser is held.
amount of cakes is increasing with a common difference of 3 so it's an arithmetic sequence.
3).Uranium loses half of its weight every 415 years.
Exponential decay in every 415 years. So geometric sequence with a common ratio of 1/2.
4).A family of rabbits doubles in size every 3 months.
Exponential series again so geometric sequence with a common ratio of 2.
5).Car drives at a constant speed of 58 mph.
Its a linear function representing an arithmetic sequence with a common difference of 58 mph.
6). Number of students increases by 122 every year.
An arithmetic sequence with a common difference of 122.
7). Number of pieces of chalk in a class room decreases by 10 throughout the school year.
It's an arithmetic sequence having common difference of 10.
mark me as the brainliest please
A car is traveling at a constant speed. It travels 3 1/2 miles in 5 1/4 minutes. How long will it take to travel 70 miles.
Answers
Answer: 122 1/2 minutes
Step-by-step explanation:
I got this answer by first subtracting 5.25-3.50=1.75 and that was how many minutes it took per mile then I multiplied 1.75x70=122.50 to get my answer.
Give brainliest please thank you.
PLEASE HELP ASAPP!!! WILL MARK BRAINLIEST
Triangle D has been dilated to create triangle D′. Use the image to answer the question.
Answers
Answer: 4
Step-by-step explanation:
Divide the sides of triangle D' by their corresponding sides on triangle D (like 32 divided by 8 and 40 divided by 10). The answer every time is 4 which means the scale factor is 4.
Answer:
The answer is 4
Step-by-step explanation:
In triangle D the top side length is 8 and in triangle D' the top side length is 32. 32 is 4 times 8, and therefore D' was factored by a scale of 4 from D.
This can be done with each side:
8x=32 --> x=4 therefore the scale factor is 4
6x=24 --> x=4 therefore the scale factor is 4
10x=40 --> x=4 therefore the scale factor is 4
PLEASE ANSWER IN DETAIL ( WILL GIVE BRAINLIEST )
Answers
Answer:
GIVEN : magnitude of angle B = 68°
magnitude of angle C = 70°
So the value of angle A (interior) be A
We know A + angle B + angle C = 180° [ Sum of all three interior angles of a triangle = 180°]
=> A + 68° + 70° = 180° [By linear equation we can find the value of A]
=> A + 138° = 180°
=> A = (180 - 138)°
=> A = 42°
A(interior) + A(exterior) = 180° [ Sum of all adjacent angle on a straight line =180°]
42° + A(exterior) = 180°
=> A(exterior) = (180-42)°
=> A(exterior) = 138°
As because A(exterior) = x = 138° (ans)
Answer:
that's all
Step-by-step explanation:
good day for u
7. Consider the diagram below. Find the value of w.
Answers
Answer:
It would be 40 degrees
Step-by-step explanation:
It is a right triangle so that means it will equal 90 degrees. 90-50 = 40 so that is your answer
Answer:
yeah its 40
Step-by-step explanation:
Help please, due tomorrow
Answers
Answer:
The missing top number is 48 and the bottom numbers are 1, 2, 4, 5
Step-by-step explanation:
2 x 24 = 48
96/24 is 4
120/24 = 5
The top row (Inches on airplane) is multiplying the number below it by 4
You end up getting
24,48,96,120
1,2,4,5
3(y-2x) = 9
x - 4 = 0
PLSSS HELPPP
Answers
Answer:
(x, y) = (4, 11).
Step-by-step explanation:
We have two equations:
3(y-2x) = 9
x - 4 = 0
From equation 2, we have x = 4. We can substitute this value into equation 1 and solve for y:
3(y-2x) = 9
3(y-2(4)) = 9 (substitute x = 4)
3(y-8) = 9
3y - 24 = 9
3y = 33
y = 11
Therefore, the solution to the system of equations is (x, y) = (4, 11).
Answer
x=4
Step-by-step explanation:
help im just doing this for my brother :C
Answers
Answer:
578
Step-by-step explanation:
118 + 560 = 678
678 - 100 = 578
578 is your answer
Answer:
578
Step-by-step explanation:
Add 18 to 560 and you get 578. Reason why is because they subtracted 18 from 118 and now you got to add it to 560. Hope that made sense
Match the simplified expression with the correct problem.
Answers
Answer: 3(x+2) +4=3x+10
x-2x+4=-x+4
1/3(12x-6) = 4x - 2
4x-3-6x+2 = -2x-1
-2(x+4) = -2x-8
Step-by-step explanation:
promise they are right
second one: -x + 4
third one: 4x - 2
fourth one: -2x - 1
fifth one: -2x - 8
r∕5 - 15 = 18
help me pls
Answers
Answer: r= 165
5−15+15=18+15
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.
Which two factors would give a product of 8.34?
Answers
Answer: 0.06 and 1.39 B 0.06 and 13.9 C 0.6 and 1.39 D 0.6 and 13.9.
Step-by-step explanation: Which two factors would give a product of 8.34? 0.06 and 1.39 B 0.06 and 13.9 C 0.6 and 1.39 D 0.6 and 13.9.
0.6 and 13.9
WHY?:
A makeup artist purchased some lipsticks and wants to wrap them individually with gift wrap. Each lipstick has a radius of 0.4 inch and a height of 2.2 inches. How many total square inches of gift wrap will the makeup artist need to wrap 3 lipsticks? Leave the answer in terms of π.
2.08π square inches
6.24π square inches
8.32π square inches
19.59π square inches
Answers
Answer:
\(6.24\pi \: {in}^{2} \)
Step-by-step explanation:
Given:
r (radius) = 0,4 in
h (height) = 2,2 in
n (the number of lipsticks) = 3
Find: A (total surface area) - ?
First, we have to find how much gift wrap will the makeup artist need to wrap one lipstick:
\(a(surface1) = 2\pi {r}^{2} + 2\pi \times r \times h\)
\(a(surface1) = 2\pi \times ({0.4})^{2} + 2\pi \times 0.4 \times 2.2 = \frac{52\pi}{25} \)
Now, let's multiply this number by the quantity of lipsticks the makeup artist has to wrap:
\(a(total) = \frac{52\pi}{25} \times 3 = \frac{156\pi}{25} = 6.24\pi \: {in}^{2} \)
6.24t in?
Step-by-step explanation:
Given:
r (radius) = 0,4 in
h (height) = 2,2 in
n (the number of lipsticks) = 3
Find: A (total surface area) - ?
First, we have to find how much gift wrap will the makeup artist need to wrap one lipstick:
a(surfacel) = 27/2 + 27 xrx h
a(surface1) = 27 × (0.4)? + 27 x 0.4 x 2.2 = 525
Now, let's multiply this number by the quantity of lipsticks the makeup artist has to wrap:
a(total) = 55 × 3=46 = 6.24rin? R is pi
The graph of y = f(x) is shown in the attached image.
For each point (a,b) that is on the graph of y = f(x), the point (2a +1, 3b) is plotted, forming the graph of another function y = g(x). As an example, the point (0,2) lies on the graph of y = f(x), so the point (2*0 + 1, 3*2) = (1, 6) lies on the graph of y = g(x).
I need help expressing g(x) in terms of x and describing the transformations that can be applied to the graph of y = f(x) to obtain the graph of y = g(x). I would like an explanation.
Answers
The calculated expression of function g(x) in terms of x is g(x) = 3f((x-1)/2)
Expressing the function g(x) in form of xTo express g(x) in terms of x, we need to use the relationship given between the points on the graph of y=f(x) and the corresponding points on the graph of y=g(x).
Specifically, if a point (a,b) is on the graph of y=f(x), then the point (2a+1,3b) is on the graph of y=g(x).
Using this relationship, we can write:
g(x) = 3f((x-1)/2)
Read more about transformation at
https://brainly.com/question/1548871
#SPJ1
please help 40 POINTS
Answers
Answer:
2 2/3 bottles of soda
Step-by-step explanation:
(2/9)*12=
24/9=
2 6/9=
2 2/3
Need help with this question please:
Answers
Answer:
If the data is collected in a biased manner, or the number of observations is too small, the graph could be skewed. To ensure the data is not skewed, collect a large representative unbiased sample. Hope this helps
Step-by-step explanation:
Which of the following phrases represents n ÷ 5?
the sum of five and a number
a number decreased by five
the quotient of a number and five
five divided by a number
Answers
Give reasoning for the answer and I will give brainy to whoever is correct!
Answers
Answer:
1. The graph is non-proportional because it starts from (0, 2).
2. The slope of the line is 3.
3. y=3x+2
Step-by-step explanation:
The graph is non-proportional since it didn't start from the origin (0, 0). If the graph starts from the origin, then it's proportional.
To find the slope of the line, use this equation, \(m=\frac{y2-x2}{y1-x1}\) or \(\frac{rise}{run}\) to solve for slope. Pick any two points on the line and use the equation that I mentioned to solve for slope m.
\(m=\frac{5-2}{1-0} =\frac{3}{1} =3\) I chose (0, 2) and (1, 5) to find the slope
Once you find the slope, write the equation in y=mx+b form to find what b is with one of the points given.
\(2=3(0)+b\)
\(-0\) \(-0\)
----------------------
2 = b
Equation of the line: y=3x+2
HELP WILL MARK BRAINIEST
What is the median for the set of data?
71
70
72
74
Answers
Answer:
Step-by-step explanation:
To find the median, we need to arrange the data in ascending order:
70, 71, 72, 74
Since the data set has an even number of values, the median is the average of the two middle values. In this case, the two middle values are 71 and 72. Therefore, the median is:
(71 + 72) / 2 = 143 / 2 = 71.5
So, the median for the given set of data is 71.5.
Which is equivalent to h⋅h⋅h⋅j⋅j⋅h⋅j?
h4⋅j3, 4h⋅3j, 7(h⋅j), or (h⋅j)7?
Answers
Answer: h^4*j^3
Step-by-step explanation:
h*h*h*h = h^4
j*j*j = j^3
thus answer is h^4 * j^3
Explanation:
There are 4 H’s being multiplied by themselves meaning it’s H to the 4th power then it’s the same process with J; J to the 3rd power. Finally you’d multiply H to the 4th and J to the 3rd. I hope this helps :)
Which statement about ocean water density is true? (Science)
a) Ocean water that is lower in temperature and has a lower salinity has a higher density.
b) Ocean water that is lower in temperature and has a higher salinity has a lower density.
c) Ocean water that is lower in temperature and has a higher salinity has a higher density.
d) Ocean water that is higher in temperature and has a higher salinity has a lower density.
Answers
Answer:C
Step-by-step explanation:
Suppose you bought a house for $467,520 and the value has increased by 19%. What is the new value of the house in dollars? Round your answer to the nearest hundredth.
please explain
Answers
Answer:
19÷100×467520=88828.8
88828.8+467520=556348.8
Nearest hundred=$556300
HELP ASAP!! questions are in the pic
Answers
Answer:
1: 13 and 12
2: 9 and 10
3: 8 and 9
4: 5 and 6
5: 7 and 8
6: 4 and 5
Step-by-step explanation:
Hope this helps.
Pablo has 20 balloons for his party. He will either take 2 for a stack or 3 for a stack. How many more stacks will Pablo need if he takes 3 on each stack?
Answers
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:
If an object travels at a speed of 6 km/h for 2 hours, how far does it travel?
Answers
PLEASE HELP if you can
they might be mixed up but portland, missippi, then questions
(file below)
Answers
Answer:c
Step-by-step explanation:
Which pair of angles in the figure below are vertical angles
Answers
Answer:
letter a and letter c
Step-by-step explanation:
vertical angles are angles that are equal and diagonal to each other
For each ride, a taxi service charges an initial fee plus an additional fee based on the number of kilometers of the trip. The graph shows the cost for taxi rides. Select a true statement. The rise is 4 while the run is 2. The selection of answers are:
A: The slope is 2.1. This means that each kilometer costs $2.10.
B: The slope is 5. This means that each kilometer costs $5.
C: The y-intercept is 2.1. This means that the initial fee is $2.10.
D: The y-intercept is 5. This means that the ride lasts 5. kilometers.
Which one is right and why?
Answers
THIS MIGHT NOT BE WHAT YOU ARE LOOKING FOR AND MIGHT NOT BE CORRECT! READ FIRST!
The answer is A. The slope of the line is rise/run = 4/2 = 2.1. This means that each kilometer costs $2.10. The y-intercept is 2.1, which means that the initial fee is $2.10. So the correct statement is: The slope is 2.1. This means that each kilometer costs $2.10.
The other statements are incorrect. The slope is not 5, so each kilometer does not cost $5. The y-intercept is not 5, so the ride does not last 5 kilometers. The y-intercept is the value of the function when the input is 0, which in this case is the initial fee of $2.10.