solve for b: -3b-6=18
Answer:
b= -8
Step-by-step explanation:
Answer:
-8
Step-by-step explanation:
-3b - 6 = 18
+6 +6
-3b = 24
-3b/-3 = 24/-3
b = -8
Helpppppppppppppppppppppppppppppppppppppppppp
Answer:
Please check explanations for answer
Step-by-step explanation:
Here, we want to check the given list and state the true values;
1. This is true
Compound interest has the exponent nt; simple interest has no exponent
2. This is false
Simple interest is only earned on the principal which is the amount deposited
3. True
Due to its multiplication chain, it earns more money as we can compound more than once within the given time frame
4. This is false; check explanations above
5. This is true
Its value is only based on the amount invested originally
6. This is false
simple interest earns the same amount annually based on rate
7. This is false
Both considers the time factor t in their formulas
8. This is true
The interest and principal forms the principal for another compounding time
32, 43, 38, 28, 51
What is the mean absolute deviation of the numbers in the list?
Answer:
The answer is 6.88.
Step-by-step explanation:
The mean absolute deviation for the given data will be equal to 6.9.
What is the mean absolute deviation?The average of the absolute deviations from a central point makes up the average absolute deviation of a data collection.
It is a statistical summary of statistical variability or dispersion.
The formula used to calculate MAD is given below:-
MAD = 1/n ∑ |xi-m|
The given data set is 32, 43, 38, 28, and, 51. First, calculate the mean of the given data.
Mean = ( 32 + 43 + 38 + 28 + 51 ) / 5
Mean = 192 / 5 = 38.4
The MAD will be calculated as below:-
MAD = ( 1 / 5) [ | ( 32 - 38.5 ) | + | ( 43 - 38.5 ) | + | ( 38 - 38.5 ) | + | ( 28 - 38.5 ) + | ( 51 - 38. 5 ) | ]
MAD = ( 6.5 + 4.5 + 0.5 + 10.5 + 12.5 + ) / 5
MAD = 6.9
Therefore, the mean absolute deviation for the given data will be equal to 6.9.
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Find the slope from the table.
What is an algebraic expression for the product of a number and 17? *
Answer:
Step-by-step explanation
Since it says and that can mean add 17.
The product of a number is a number that was multiplied. So 30 is a product of 5 and 6.
So maybe the answer might be
x+17
Can someone help with this
Answer:
I hope this helps you
Step-by-step explanation:
50.2654824574
PLEASE HELP! This is over due please help ASAP! I’ll give brainliest! please!
Solve the inequality. Graph your solution.
2x-1/3/3 +3 <= -4 OR 8x-2/2 -1 => 6
A. X <= -10 or x => 2
B. X <= -2 or x => 2
C. X => -10 or => 2
D. Z <= -4 or x=> 9/8
(I’m sure it was obvious but im just letting you know I used =><= for the “ greater/less than or equal to” signs)
Answer:b
Step-by-step explanation:
someone please help me, it’s for my math homework! :)
Evaluate the following expression:42/12 - 85/25 + 117/30
Answer:
4
Step-by-step explanation:
Let's first simplify all terms, then convert them to /10:
42/12 = 7/2 = 35/10
85/25 = 17/5 = 34/10
117/30 = 39/10
Then the final addition is:
(35-34+39)/10 = 40/10 = 4
43.82 feet 50.02 feet What is the difference between the two distances?
The difference between the distances 43.82 feet and 50.02 feet is 6.2 feet.
How to find the difference between two numbers?
Subtract the greatest from the smallest value of two numbers to determine the difference between them. The difference between the two numbers is the sum's product.
Given,
The two distances:
x = 43.82 feet
y = 50.02 feet
We have to determine the difference between x and y.
That is,
y – x. This is because y > x.
y – x = 50.02 feet – 43.82 feet = 6.2 feet.
Therefore,
The difference between the distances 43.82 feet and 50.02 feet is 6.2 feet.
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Kelly scored 56.73 points and Karen scored 74.92 points on an exam. How many points less did Kelly score than Karen?
PLEASE HELPPP!!!
San Francisco is well known for its fog: very thick, low-lying clouds that hide its hills. One foggy day, Penelope is practicing kicking a football. Once she kicks the football so high that it disappears into the fog! The height of the ball (in feet) can be represented at time (in seconds) by the equation h(t)=−16t2+64t . The ball disappears into the fog when it is 40 feet high.
a) Write an inequality that represents the times during which the ball was not visible.
b) Solve the inequality and represent your solution algebraically and on a number line. Also, write a sentence explaining your answer in the context of the problem.
c) How high does Penelope kick the football?
d) When does it reach its maximum height?
Answer:
a) [tex]-16t^{2}+64t\geq40[/tex]
b)[tex][2-\frac{\sqrt{6}}{2} , 2+\frac{\sqrt{6}}{2}][/tex]
(see attached picture for the number line)
This interval means that from about 0.78s to about 3.22s the ball will not be visible because it will be higher than 40 feet high.
c) [tex]h_{max}=64ft[/tex]
d) t=2s
Step-by-step explanation:
a)
Basically the ball will disappear when it is higher than 40 ft, so we can build the inequality like this:
[tex]-16t^{2}+64t\geq40[/tex]
this is because the function represents it's height, so when the function is greater than or equal to 40, then the ball will disappear.
b) to solve the inequality, first we need to turn the ≥ symbol to an = symbol and solve for t, so we get:
[tex]-16t^{2}+64t =40[/tex]
we can move the 40 to the other side of the equation so we get:
[tex]-16t^{2}+64t-40=0[/tex]
we can factor the equation so it's easier to solve, so we get:
[tex]-8(2t^{2}-8t+5) =0[/tex]
which simplifies to:
[tex]2t^{2}-8t+5=0[/tex]
and we can use the quadratic formula to solve this equation, so we get:
[tex]t=\frac{-b\pm\sqrt{b^{2}-4ac}}{2a}[/tex]
so we get:
[tex]t=\frac{-(-8)\pm\sqrt{(-8)^{2}-4(2)(5)}}{2(2)}[/tex]
which yields:
[tex]2\pm \frac{\sqrt{6}}{2}[/tex]
and next we need to test the posible intervals to see which one makes the inequality true, the possible intervals are:
[tex](-\infty, 2-\frac{\sqrt{6}}{2}][/tex] for a test value of 0
[tex][2-\frac{\sqrt{6}}{2},2+\frac{\sqrt{6}}{2}][/tex] for a test value of 1
[tex][2+\frac{\sqrt{6}}{2},\infty)[/tex] for a test value of 4
so next we test each of the values in the original inequality and see if the inequality is true:
[tex](-\infty, 2-\frac{\sqrt{6}}{2}][/tex] for a test value of 0
[tex]-16(0)^{2}+64(0)\geq40[/tex]
[tex]0\geq40[/tex] false
so this is not an answer.
[tex][2-\frac{\sqrt{6}}{2},2+\frac{\sqrt{6}}{2}][/tex] for a test value of 1
[tex]-16(1)^{2}+64(1)\geq40[/tex]
[tex]48\geq40[/tex]
true, so this is an answer.
[tex][2+\frac{\sqrt{6}}{2}, \infty)[/tex] for a test value of 4
[tex]-16(4)^{2}+64(4)\geq40[/tex]
[tex]-16(16)+64(4)\geq40[/tex]
[tex]-256+256\geq40[/tex]
[tex]0\geq40[/tex]
false, so this is no answer.
So the answer is the interval:
[tex][2-\frac{\sqrt{6}}{2},2+\frac{\sqrt{6}}{2}][/tex]
This interval means that from about 0.78s to about 3.22s the ball will not be visible because it will be higher than 40 feet high.
c) In order to find how high Penelope kick the football, we must find the vertex of the parabola which is gotten when graping the given function (see attached picture)
so we can use the following formula to find the t-value for this maximum height:
[tex]t=-\frac{b}{2a}[/tex]
so we substitute the corresponding values:
[tex]t=-\frac{64}{2(-16)}[/tex]
which yields:
t=2s
next, we can substitute this time into the original function to find the maximum height, so we get:
[tex]h=-16(2)^{2}+64(2)[/tex]
which yields:
h=64 ft
d) We found the answer for d on the previous part where we got that t=2s
Answer this question please and thank you
Answer:
I think it's 62 :D
Step-by-step explanation:
52 - (-10)= 62
Find the distance between the two points in simplest radical form.
(-5,8) and (-3, 1)
Given:
The two points are (-5,8) and (-3,1).
To find:
The distance between the given two points in simplest radical form.
Solution:
Distance formula: The distance between two points is
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
Using distance formula, the distance between (-5,8) and (-3,1) is
[tex]d=\sqrt{(-3-(-5))^2+(1-8)^2}[/tex]
[tex]d=\sqrt{(-3+5)^2+(-7)^2}[/tex]
[tex]d=\sqrt{(2)^2+(-7)^2}[/tex]
[tex]d=\sqrt{4+49}[/tex]
[tex]d=\sqrt{53}[/tex]
Therefore, the distance between two points (-5,8) and (-3,1) is [tex]\sqrt{53}[/tex] units.
Find the surface area of a cylinder with a height of 9 inches and a base radius of 4 in ches
1.Find the product. Simplify as low as possible
5/19 × 2 8/15
50 points and brainlist!
Help plz! If u can’t read the answer and question I’ll type it.
Consider the points 3,4 and 3,-4 when the two points are compared which statement is not true?
a. The x -coordinate have the same value
B. The y-cordanites have the same absolute value
C. The y- coordinates are opposite numbers
D. Both points are three units above the x-axis
Answer:
D
Step-by-step explanation:
Answer:
the y coordinates are opposite numbers
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELP SHOW YOUR WORKKKKKKKKKKK PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
Solve the inequality below.
Answer:
6.8
Step-by-step explanation:
In order to do this equation you must find out what -6/5u+8 is which has to equal greater than -10.
-6/5 as a decimal is -1.2
-1.2+8= 6.8
So it is 6.8>-10
3 + 5f - (24 - 9g) for f= 6.2 and g= 2.1
Answer:
28.9
Step-by-step explanation:
3+5(6.2)-(24-9(2.1))
3+31-(5.1)
34-5.1
28.9
Answer:
28.9
Step-by-step explanation:
draw moels for two gardens, one that is 6 ftx 3 ft and one that is 6 ft x 4ft.
Both the garden are in the shape of rectangles.
A rectangle is a quadrilateral with four right angles in the Euclidean plane. It can alternatively be described as a parallelogram with a right angle or an equiangular quadrilateral, where equiangular denotes that all of its angles are equal. A square is a rectangle with four equally long sides.
The dimension of the two gardens are given as:
6 ft ×3 ft and 6 ft × 4 ft
From the dimension, we can conclude that the gardens are in the shape of a rectangle.
For the first garden 6 ft ×3 ft,
The length of the garden is l = 6 ft and;
The breadth of the garden is b = 3 ft.
Similarly,
For the second garden 6 ft × 4 f,
The length of the garden is l = 6 ft and;
The breadth of the garden is b = 4 ft.
The models for the two gardens:
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The population of a city increased by 140 people last year. Which situation, when combined with that increase in population, results in a zero overall change in population?
A. The population of the city decreases by 140 during the next year.
B. The population of the city decreases by 10 people per month during the next year,
C. The population of the city stays constant during the next year.
D. The population of the city increases by 140 during the next year.
Rita runs 3 miles in 25 minutes. At the same rate, how many miles would she run in 20 minutes?
Answer:
2.4
Step-by-step explanation:
v=3/25
d=3/25 * 20=12/5=2.4
hope this help
If M is the centroid of triangle ABC, AM = 44, CE =54, and DM
= 23, find each missing measure.
FM=?
Answer:
FM = 22
Step-by-step explanation:
Centroid of a triangle divides the median in the ratio 2 : 1
Therefore, AM : FM = 2 : 1
Let AM = 2x and FM = x
Since, AM = 44
Therefore, 2x = 44
x = 44/2
x = 22
FM = 22
Someone please help, I have a midterm and I have no idea what I’m doing ♀️
Answer:
7% of 100 is 7 so 100 + 7 = 107
Step-by-step explanation:
whats the square root of 9?
Answer:
The answer is 3
Step-by-step explanation:
The length of a pencil is 7½ inches. What is the combined length of 9 pencils that are this size?
Answer:
67.5
Step-by-step explanation:
7.5 (the lenght of the pencil) multiplied by 9 (the number of pencils) is 67.5
Answer:
7in
Step-by-step explanation:
A piece of paper has an area of 80 square inches. A person cuts off of the piece of
paper. Then a second person cuts off of the remaining paper. A third person cuts
off what is left, and so on.
The remaining paper after the nth person cuts off their fraction is given by:
n A(n)
0 80
1 60
2 45
3 33.75
What is an arithmetic sequence?An arithmetic sequence can be defined as a series of real and natural numbers in which each term differs from the preceding term by a constant numerical quantity.
How to calculate an arithmetic sequence?Mathematically, the nth term of an arithmetic sequence can be calculated by using this expression:
aₙ = a₁ + (n - 1)d
Where:
d represents the common difference.a₁ represents the first term of an arithmetic sequence.n represents the total number of terms.After the first person cuts off 1/4, the piece of paper left is given by:
Fraction = 1/4 × 80
Fraction = 20
Remainder = 80 - 20 = 60 square inches.
After the second person cuts off 1/4, the piece of paper left is given by:
Fraction = 1/4 × 60
Fraction = 15
Remainder = 60 - 15 = 45 square inches.
After the second person cuts off 1/4, the piece of paper left is given by:
Fraction = 1/4 × 45
Fraction = 11.25
Remainder = 45 - 11.25 = 33.75 square inches.
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Complete Question:
A piece of paper has an area of 80 square inches. A person cuts off 1/4 of the piece of paper. Then a second person cuts off 1/4 of the remaining paper. A third person cuts off 1/4 what is left, and so on.
Complete the table where A(n) is the area, in square inches, of the remaining paper after the nth person cuts off their fraction.
Please help will mark the brainliest
Answer:
y=-x-2 this is the answer
15x=5(4-x)
X=?
Merry Christmas and Happy New Year!
Answer:
Merry Christmas!!!! :D
Step-by-step explanation:
The awnser is 1 :D
Answer:
x=1
Step-by-step explanation:
15x=5(4-x)
15x=20-5x
20x=20
x=1
Happy Holidays! Please give me brainliest!
Last week the number of bacteria in a petri dish was 2.25×102. This week the number of bacteria in the petri dish is 2.75×105. How many times more bacteria are in the petri dish this week?
Round the decimal to the nearest tenth.There are
____ × 10____
times more bacteria in the petri dish this week compared to last week.
Answer:
Step-by-step explanation:
2.75 x 10⁵ ) / (2.25 x 10² )= (2.75 / 2.25) x 10⁵⁻²= 1.2 x 10³ times .(That's 1,200 times as many.)
Factor each expression into its simplest form
2x+8
Answer:
2(x+4)
Step-by-step explanation:
common denominator is 2
Answer:
2(x+4)
Step-by-step explanation:
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