Answer:
-10a-15b
Hope this helps!!!!
Answer:
-10a - 15bStep-by-step explanation:
[tex] - 5(2a + 3b)[/tex]
Expand : Use -5 to open the bracket
[tex] - 5 \times 2a = - 10a \\ - 5 \times 3b = - 15b \\ \\ - 10a - 15b[/tex]
what is x³ minus 2x pls answer me fast
Answer:
x(x^2 - 2)
Step-by-step explanation:
Madelyn is a waitress at a restaurant. Each day she works, Madelyn will make a guaranteed wage of $20, however the additional amount that Madelyn earns from tips depends on the number of tables she waits on that day. From past experience, Madelyn noticed that she will get about $8 in tips for each table she waits on. How much would Madelyn expect to earn in a day on which she waits on 18 tables? How much would Madelyn expect to make in a day when waiting on tt tables?
Answer:47
Step-by-step explanation:
1/2y - 4 = -8
y=
HELP ME PLEASE I WILL GIVE YOU BRAINLIEST PLEASEEE
Answer:
y = -8
Step-by-step explanation:
1/2y - 4 = -8 (Add 4 to both sides)
1/2y = -4 (Multiply both sides by 2)
y = -8
Solve the compound inequality 10 + x < 20 and 4x > -24
Answer:
c
Step-by-step explanation:
1.) move all terms that are not x to the right side.of the inequalities.
10+x≤20 4x≥-24
-10 -10 4 4
x≤10 x≥-6
2.) combine the two equations to make -6≤x≤10
What is the slope of the line that passes through the points (-20, 18) and (30, 14)?
25
2
5
o
2
25
Answer:
-2/25
Step-by-step explanation:
use the formula y2-y1/x2-x1
14-18/30-(-20)
-4/50
-2/25
PLEASE HELP WILL GIVE BRAINLIEST
An object is launched into the air. The projectile motion of the object can be modeled using the function
h(t) = –16t2 + 72t + 5, where t is the time in seconds since the launch and h(t) represents the height in feet of the object after t seconds. What is true about the projectile motion of this object? Check all that apply.
The initial height is 5 feet.
The initial velocity of the object is –72 feet/second.
The object will hit the ground after approximately 4.57 seconds.
After 3 seconds, the object is 173 feet high.
At t = 0, h(t) = 0.
Answer:
The initial height is 5 feet.
The initial velocity of the object is –72 feet/second.
The object will hit the ground after approximately 4.57 seconds.
After 3 seconds, the object is 173 feet high.
So t = 0, h(t) = 0
Step-by-step explanation:
Line m is a perpendicular bisector of line segment S Q. It intersects line segment S Q at point R. Line m also contains points T and V. Line segment S V is 4 x minus 1. Line segment S T is 3 x + 2.
Segment TQ is 26 units long. What is the length of QV?
8 units
26 units
31 units
32 units
Answer:
31 units
Step-by-step explanation:
just did it on edge
Answer:
C) 31 units
Step-by-step explanation:
just took the test on edg 2020
hope this helps :)
If the diameter of the Sun is about 100 times the diameter of the Earth, which of the following is the best approximation for the ratio of the volume of the Sun to the volume of the Earth? (A) 10
2
(B) 10
4
(C) 10
6
(D) 10
8
The ratio of the volume of the Sun to the volume of the Earth can be calculated using the formula for the volume of a sphere, V = (4/3)πr³, where r is the radius of the sphere.
Since we know that the diameter of the Sun is about 100 times the diameter of the Earth, we can say that the radius of the Sun is 50 times the radius of the Earth.
Therefore, the ratio of the volumes of the Sun and the Earth can be expressed as follows:
V (Sun) = (4/3)π(50r)³V (Earth)
= (4/3)πr³V (Sun) / V (Earth)
= [(4/3)π(50r)³] / [(4/3)πr³]V (Sun) / V (Earth)
= (50³r³) / r³V (Sun) / V (Earth)
= 50³V (Sun) / V (Earth)
= 125,000,000
So, the best approximation for the ratio of the volume of the Sun to the volume of the Earth is 10⁸ (which is answer choice D).
Therefore, option (D) is the correct option.
Note: A helpful tip to remember this formula is to divide the volume of a sphere by π/6, which will give you the formula for the surface area of a sphere.
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"Which expression is NOT equivalent to the sum of 36 + 54?
a) 18( 2+3 )
b) 4( 9+6 )
c) 3( 12+18 )
d) 2(18+27 )
*plzzzz helppp*
Answer:
B equals 60 and 36+54 = 90
Answer:
b
Step-by-step explanation:
4.9=36
4.6=24
36+24
The collection of whole numbers is an example of a set. OA. True O B. False
Answer:
It is false
Step-by-step explanation:
At what point does the curve have maximum curvature? y = 4ex
(x, y) =
What happens to the curvature as x → [infinity]?
We have found that the point where the curve y = 4ex has maximum curvature is (ln(√3) / 2, 4√3 / 3). We have also found that the curvature of the curve approaches zero as x → ∞.
First, let us differentiate the given equation with respect to x to obtain the value of dy/dx.
So, y = 4ex
dy/dx = 4ex* d/dx(x)
dy/dx = 4ex
Thus, the first derivative of the given function is:
dy/dx = 4ex
The second derivative of the given function is:
d²y/dx² = d/dx
(dy/dx) = d/dx(4ex) = 4ex
As we know that the curvature of a function y = f(x) is given by
K = |d²y/dx²| / [1 + (dy/dx)²]^(3/2)
Therefore, substituting the values of dy/dx and d²y/dx² in the above equation, we get
K = 4ex / [1 + (4ex)²]^(3/2)
Thus, we have found the expression for curvature of the given curve y = 4ex.
Now, we need to find the maximum curvature of the curve.
To find the maximum curvature, we need to differentiate the curvature expression with respect to x and equate it to zero.
Then, we need to solve for the value of x to get the point where the maximum curvature occurs.
dK/dx = 0 = -24e^(3x) / [(1 + 16e^(2x))^2 * sqrt(1 + 16e^(2x))]
On solving the above equation, we get
x = ln(√3) / 2
Thus, the point where the curve has maximum curvature is (ln(√3) / 2, 4√3 / 3).
Now, let us find the value of curvature as x approaches infinity. Since the denominator of the curvature expression approaches infinity much faster than the numerator, the value of curvature approaches zero as x → ∞.
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4x - 8 = 4(x-3) help please show me work for brainliest points
-1/5 divided by -2/7
Answer:
7/10
Step-by-step explanation:
Answer:
7/10
Step-by-step explanation:
since they are both negative when you cross multiply it will become positive.
1×7=7
5×2=10
what is the answer for this 2a+a(a-3)
Answer:
a^2-a
Step-by-step explanation:
If you simplify this equation, you have to multiply (2a+a) by (a-3), which will give you a^2-a. a^2 means a squared.
What is the equation of the line that passes through points (2, −6) and (−4, 3)?
Answer:
y = -3/2x - 3
Step-by-step explanation:
Slope-Intercept Form: y = mx + b
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Step 1: Find slope m
[tex]m=\frac{3-(-6)}{-4-2}[/tex]
[tex]m=\frac{3+6}{-6}[/tex]
[tex]m=\frac{9}{-6}[/tex]
[tex]m=\frac{-3}{2}[/tex]
y = -3/2x + b
Step 2: Find y-intercept b
3 = -3/2(-4) + b
3 = 6 + b
b = -3
Step 3: Rewrite linear equation
y = -3/2x - 3
Answer:
y = -1.5x - 3
Step-by-step explanation:
Find the slope using rise over run, (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are points on the line
Plug in the points:
(y2 - y1) / (x2 - x1)
(3 + 6) / (-4 - 2)
9 / -6
3/-2 or -1.5
Then, plug in the slope and a point into y = mx + b to find b:
y = mx + b
-6 = -1.5(2) + b
-6 = -3 + b
-3 = b
Plug in the slope and b into y = mx + b
y = -1.5x - 3 is the equation
Which of the following are equations for the line shown below? Check all that apply.
A. y-1 =0.4(x-5)
B. Y+3=0.4(x+5)
C. y-5=0.4(x-1)
D. y-3=0.4(x-5)
Answer:
Maybe C?.. Pls dont trust me I haven done this in a while.
Step-by-step explanation:
Solve the equation 5z-13=-3
Answer:
i think but not sure this is 16
abswer 16
Answer:
z = 2Step-by-step explanation:
[tex]5z-13=-3[/tex]
Collect like terms and simplify
[tex]5z = -3+13\\\\5z =10[/tex]
Divide both sides of the equation by 5
[tex]\frac{5z}{5} = \frac{10}{5} \\\\Simplify\\\\z = 2[/tex]
Please answerrrrrerrrrr. -5x+12=19+2x
HELPPP!!!! 110 points if you get it correct before the 4th of october!!!1
Answer:
5.7, 6.9, 5, 7.1
Step-by-step explanation:
The absolute value of a number shows its distance from 0 on the number line, meaning it must always be positive since distance is positive. You have to perform the operations indicated on each expression to the left and match it to the correct value on the right. I got 5.7, 6.9, 5, 7.1 in order from top to bottom after adding and subtracting the numbers to the left.
Answer:
the first one on the left, goes to the third one on the right. the second one on the left goes to the first one on the right. the third one on the left goes to the fourth one on the right. the first one on the left goes to the second one on the right. Sorry if this is confusing :(
Claire bought just enough fencing to enclose either a rectangular garden or a triangular garden, as
shown. The two gardens have the same perimeter. How many feet of fencing did she buy?
Answer:
the answer is 40 you are welcome
Name a linear pair.
Answer:
Hey mate here is ur answer....
Step-by-step explanation:
Angle HEF or FEH is one linear pair. A linear pair is T shape in a figure. If you take a proper look you will get 5 linear pairs in this figure.
hope it helps you,
mark me as the brainliest,
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determine the rate of change (slope) and starting point (y-intercept)
Answer:
B
Step-by-step explanation:
3) [4 pts] Calculate the pair-wise distance matrix (total number of changes) and the Neighbor-joining tree revising the matrix every time. [1 pt] How does this tree compare with the most parsimonious one? Evolution; BIOL:3172 Phylogeny Exercise. Name: Section: 3) [4 pts] Calculate the pair-wise distance matrix (total number of changes) and the Neighbor-Joining tree revising the matrix every time. [1 pt] How does this tree compare with the most parsimonious one?
The Neighbor-Joining tree generated using the pair-wise distance matrix may not be the most parsimonious one.
Let's start by calculating the pair-wise distance matrix, which represents the total number of changes between each pair of sequences. Each change can be a substitution, insertion, or deletion. Once we have the distance matrix, we can construct the Neighbor-Joining tree by iteratively joining the closest sequences.
The Neighbor-Joining tree is a commonly used method to infer phylogenetic relationships. However, it is important to note that it may not always represent the most parsimonious tree. The parsimony principle assumes that the tree with the fewest number of changes is the most likely tree. In other words, it seeks to minimize the total number of evolutionary changes required to explain the observed sequences.
The Neighbor-Joining tree, on the other hand, is based on the concept of minimizing the total branch length of the tree, which may not necessarily correspond to the fewest number of changes. Therefore, the Neighbor-Joining tree may differ from the most parsimonious tree in terms of the sequence of branching events or the number of changes required. It is always advisable to consider multiple methods and evaluate the support for different tree topologies to obtain a comprehensive understanding of the phylogenetic relationships.
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With a little care, you can find the median and the quartiles from the histogram. what are these numbers? you can also find the mean number of servings of fruit claimed per day from the histogram. first use the information in the histogram to compute the sum of the 74 observations, and then use this to compute the mean.
Complete Question
The histogram from this question is shown on the first uploaded image
Answer:
The first quartile is [tex]1st Q = 19^{th} girl (subject ) = 1 \serving\ of\ fruit\ per\ day[/tex]
The median is [tex]Median = 38 ^{th} \ girl (subject) = 2 \serving\ of\ fruit\ per\ day [/tex]
The third quartile is [tex]3rd Q = 56^{th} \ girl (subject) = 4 \serving\ of\ fruit\ per\ day [/tex]
The mean is [tex]\= x = 2.62[/tex]
Step-by-step explanation:
From the question we are told that
The total number of girls is n = 74
Generally the median is mathematically represented as
[tex]Median = \frac{\frac{n}{2} +[ \frac{n}{2} + 1] }{2}[/tex]
So
[tex]Median = \frac{\frac{74}{2} +[ \frac{74}{2} + 1] }{2}[/tex]
=> [tex]Median = \frac{37 +38 }{2}[/tex]
=> [tex]Median =37.5 \ girl [/tex]
From the histogram [tex]37.5 \approx 38^{th} \ girl[/tex] fall under 2 fruits per day
Generally the first quartile is mathematically represented as
[tex]1st \ Q = \frac{\frac{n}{4} + [\frac{n}{4} + 1] }{2}[/tex]
=> [tex]1st \ Q = \frac{\frac{74}{4} + [\frac{74}{4} + 1] }{2}[/tex]
=> [tex]1st \ Q = 19 \ girl [/tex]
From the histogram [tex]19^{th} [/tex]girl fall under 1 fruit per day
Generally the third quartile is mathematically represented as
[tex]3rd\ Q = \frac{\frac{n}{2} + n }{2}[/tex]
=> [tex]3rd\ Q = \frac{\frac{74}{2} + 74 }{2}[/tex]
=> [tex]3rd\ Q = 55.5 [/tex]
From the histogram [tex]55.5 \approx 56^{th} \ girl[/tex] fall under 4 fruits per day
Generally from the histogram table the frequency [number of subjects (girls) ] and the servings of fruit per day can be represented as
Total
x(servings per day ) 0 1 2 3 4 5 6 7 8
f (number of subjects ) 15 11 15 11 8 5 3 3 3 [tex]\sum f = 74[/tex]
xf 0 11 30 33 32 25 18 21 24 [tex]\sum xf = 194[/tex]
Generally the mean is mathematically represented as
[tex]\= x = \frac{1}{ \sum f} * [\sum xf][/tex]
=> [tex]\= x = \frac{1}{ 74} *194[/tex]
=> [tex]\= x = 2.62[/tex]
Use the applet to build cubes that result from dilating a unit cube by each scale factor shown in the table. Then, complete the table with the surface area and volume of each dilated cube. scale factor surface area in square units volume in cubic units
By using an applet, cubes can be constructed by dilating a unit cube with different scale factors. The table is then completed by calculating the surface area and volume of each dilated cube.
Dilating a cube involves scaling it uniformly in all dimensions by a certain factor. To complete the table with the surface area and volume of each dilated cube, we can use the following steps:
Use the applet to construct a unit cube, which has a side length 1 unit.
Apply each scale factor listed in the table to dilate the unit cube. This means multiplying each side length of the unit cube by the corresponding scale factor.
Calculate the surface area of each dilated cube. The surface area of a cube can be found by multiplying the area of one face by 6, as a cube has 6 equal faces.
Calculate the volume of each dilated cube. The volume of a cube is found by cubing the length of one side.
Fill in the table with the surface area and volume of each dilated cube corresponding to its scale factor.
By following these steps, we can construct cubes of different sizes by dilating the unit cube and determining their surface area and volume. The table will provide the measurements for each dilated cube based on the given scale factors.
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It cost Parker $7.11 to send 79 text messages. How much does it cost to send one text?
Answer: I am not sure but I think the answer is 0.09
What is the value of the expression below when x = 4 ? 7x^2 + 8x - 7 , Please answer !!!!!!!! Will mark brainliest !!!!!!!!!
Answer:
137
Step-by-step explanation:
7x^2+8x-7
7(4)^2+8(4)-7
7(16)+32-7
112+32-7
144-7
137
plot 5–11 the failure locus, the load line, and estimate the factor of safety by graphical measurement
To plot the failure locus and load line, we need specific data points or equations that define them. The failure locus represents the failure criterion or limit for a given material or structure, and the load line represents the applied loads or stresses. Without this information, we cannot plot them accurately.
Once the failure locus and load line are plotted, we can estimate the factor of safety by measuring the distance between the failure locus and the load line at a specific point. The factor of safety is typically calculated as the ratio of the ultimate strength or capacity of a structure to the applied loads. By measuring the distance between the failure locus and the load line, we can determine the margin of safety.
Please provide the necessary data or equations for the failure locus and load line so that we can assist you further in plotting and estimating the factor of safety.
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(9^2-2^6) -Г64 + 36/3(4)
Answer:
12
Step-by-step explanation:
Answer:
the answer is 441 because I just did it
beth is a member of the school swim team, and she specializes in distance events. today at practice, she plans to swim for 20 minutes at a constant speed of 75 meters per minute. the function d(m) represents the total distance beth has swum, in meters, during m minutes of practicing. what is the range of d(m)?
Answer:
d(m) can range up to 1500 meters
Step-by-step explanation:
multiply 20 by 75 since she will be swimming at a constant speed of 75 for 20 minutes
