Answer:-10m+10x
Step-by-step explanation: add -8m plus -2m which gives you -10m and then add 3x plus 7x which gives you 10x so the final answer is -10m+10x.
A contractor removed 357 cubi c ya rds of earth from a building site. If the contractor’s trucks can haul 17 cubic yards per load, how many truckloads of earth were moved?
Answer:
21 loads
Step-by-step explanation:
357/17=21
I need you help, help me pleaseeeee
Answer:
y=4x+2 is answer .......
help, i was out sick for most of the week before and didnt learn this materal, i really need help
Answer:
example 1 is correct
a^2 - b^2 factors as (a+b)(a-b)
that is a form that math teachers want you to memorize
it is called the "difference of squares" factoring
Step-by-step explanation:
Sample annual salaries (in thousands of dollars) for employees at a company are listed.
41 54 61 48 27 27 41 54 61 31 48 41 47
(a) Find the sample mean and sample standard deviation.
(b) Each employee in the sample is given a 5% raise. Find the sample mean and sample standard deviation for the revised data set.
(c) To calculate the monthly salary, divide each original salary by 12. Find the sample mean and sample standard deviation for the revised data set.
(d) What can you conclude from the results of (a), (b), and (c)?
Answer:
Down
Step-by-step explanation:
List from low to high
27 27 31 41 41 41 47 48 48 54 54 61 61
a. Mean = sum of sample/2
Mean = 581 / 2 = 290.5
b. Mean + 5%
290.5 + 5% = 305.025
c. 305.025 / 12 = 25.41875
d. Mean is ratio. Thus the adding and dividing with anything will affect the mean overall
If ;= -7, what is the value of 13?
-1
i
1
-i
Answer:
B r a i n d o e s n o t c o m p r e h e n d
Step-by-step explanation:
m e n o u n d e r s t a n d
Answer:
M E N E I T H E R ! ! ! !
Step-by-step explanation:
U H h h H H H H H H !!!!!!!!!
PLEASE HELP!!! How does the multiplicity of a zero affect the graph of the polynomial function?
9514 1404 393
Answer:
2, 4, 61crossStep-by-step explanation:
Consider a zero at x=1.
If it has multiplicity 1, the corresponding factor is (x -1). Now consider the sign of that factor for x = 1.1. The value is (1.1 -1) = 0.1, a positive number.
When the value of x is 0.9, the factor is (0.9 -1) = -0.1, a negative number.
This tells you that values to the left of a zero make the factor(s) associated with that zero be negative. For x-values to the right of the zero, the factor(s) will be positive.
If the multiplicity is even, the product of those factors is positive on either side of the zero. (A negative number to an even power is a positive number.) That is, the graph will not change sign from one side of an even-multiplicity factor to the other. At an odd-multiplicity factor, the graph changes sign.
__
For the problem at hand, the only even-multiplicity factor is (x -1), so the graph will not change sign at x=1. It will touch the axis (be tangent to the x-axis), but will not cross. The other zeros have odd multiplicity (1 or 3), so the graph will change sign there.
It is worthwhile to note that the higher the multiplicity, the "flatter" the graph is at the zero. You can see this in the attachment by comparing the shape of the graph at x=6 with the shape at x=2 (also an upward zero crossing).
_____
Additional comment
You may wonder why the curve is below the x-axis at x=1 when the product of the factors in that neighborhood is always positive. The reason is that there are an odd number of zeros to the right of x=1, so the product of those factors is negative.
Evaluate (3x + 5) - (2x + 7) when x = 5.
A. 30 - 34 = -4
B. 20 - 17 = 3
C. 20 - 10 + 7 = 17
D. 30 + 34 = 64
13 of 13
Answer:
The answer is B. 20 - 17 = 3
Step-by-step explanation:
( 3x + 5) - (2x + 7)...... x = 5
( 3(5) + 5) - ( 2(5) + 7)
( 15 + 5) - (10 + 17)
20 - 17 = 3
Thank you :)
Answer:
The answer is 20 - 17 = 3 [Choice B.]
Step-by-step explanation:
Put x = 5 into the formula (3x + 5) - (2x + 7)
[3(5)+5] - [2(5)+7]
= [15 + 5] - [10 + 7]
=20 - 17
= 3
what is 7.04 trillion in scientific notation?
Answer:
According to Answers.com the answer is 7.04 1012
And according to AnswerGuru its 7.04 trillion = 7.04 x 10¹²
HELP MEE !!!!!!!!!!!!!!
Answer:
I got you
Step-by-step explanation:
your answers are
2. 5/14
3. 5/9
4. I can't see it so I'm going with 8/15
brainliest pls (>m<)
The perimeter of a rectangle is 92 cm. If the length is 22 cm, how wide is the rectangle?
A) First write an equation you can use to answer this question. Use w as your variable in the equation.
Answer:
W = 24cm
Step-by-step explanation:
p of a rectangle = 92
L = 22cm and W = ?
p = 2(L+W)
92 = 2(22+W)
92 = 44 + 2W
2W = 92 - 44
2W = 48
W = 48/2
W = 24cm
Can someone help me (Geometry)
Answer:
sum of angles on a straight line =180 degrees
DAB=180-36-35=109 degrees
Evaluate the expression.
6(3 + 5)
26.
4
HELP
Answer =1267.2
Step-by-step explanation:
6(3+5)26.4
6×8×26.4
48×26.4
1267.2 is the answer
Kakuro is like a crossword puzzle with numbers.
9514 1404 393
Answer:
[[. . 3 6 .][1 3 4 9 .][9 2 . 7 1][. 1 2 8 3][. 4 9 . . ]]
Step-by-step explanation:
It is helpful to remember that the first four digits {1, 2, 3, 4} total 10, and the last four digits {6, 7, 8, 9} total 30. It is also worthwhile to note that the smallest sum of two digits is 3 = 1+2, and the largest sum of 2 digits is 17 = 8+9. Some sums can only be made one way: 4 = 1+3, 16 = 7+9.
Here, we will refer to rows 1-5 from the top down, and columns 1-5 from the left to right.
__
Based on the above, column 5 can only be made one way: 1+3. Column 4 can only be made one way: 9+8+7+6. Then the choices for row 3B will be 1+7 or 5+3. We know it can't be 5+3 because 5 is not part of column 4. This makes our first fill-in (row, column) be (3,4)=7, (3,5)=1, (4,5)=3.
The sum of the remaining cells in row 4 must be 14-3 = 11, and cell (4,4) must be 6, 8, or 9. It cannot be 9, because that would require the remaining two cells to have a sum of 2, which they cannot. So, cell (4,4) is 6 or 8.
Cell (1,4) cannot be 9, either, because we cannot use 0 in cell (1,3). Then the only place for 9 in column 4 is in cell (2,4)=9.
With cell (1,4) being restricted to 6 or 8 (the two remaining numbers in column 4, cell (1,3) must be 3 or 1, and cell (2,3) must be 4 or 6. It cannot be 6 because that would require a sum of 2 in the first two cells of row 2, so (2,3)=4, (1,3)=3, and (1,4)=6. This makes (4,4)=8 and the remaining two cells of row 4 must be 1 and 2. 1 cannot go in (4,3), so we must have (4,3)=2 and (5,3)=9, (5,2)=4, (4,2)=1. That leaves 2 and 3 for rows 2 and 3 of column 2. The first two cells of row 2 must total 4, so must be 1 and 3. Cell (2,2) cannot be 1, so must be 3, leaving (2,1)=1, (3,1)=9, (3,2)=2 and that completes it.
The fill-ins are ...
[. . 3 6 .]
[1 3 4 9 .]
[9 2 . 7 1]
[. 1 2 8 3]
[. 4 9 . . ]
The angle made by circle is ______.
Answer:
Step-by-step explanation:
360 degrees
Answer:
No angle is made
Step-by-step explanation:
According to me an angle is a point where two or more lines meet and apparently a circle has no meeting lines expect with given radii , diameters or chords
Which two integers is 91 squared by 3 between
Answer:
9 and 10
Step-by-step explanation:
Find the nth term for the following sequences, 100,96,90,82,72.(an^2+bn+c)
9514 1404 393
Answer:
t(n) = -n^2 -n +102
Step-by-step explanation:
We can use the first 3 terms to find a, b, c.
a(1)^2 +b(1) +c = 100
a(2)^2 +b(2) +c = 96
a(3)^2 +b(3) +c = 90
Subtract the first equation from the other two:
3a +b = -4 . . . . . . [eq4]
8a +2b = -10 . . . . [eq5]
[eq5] can be reduced to
4a +b = -5 . . . . . . [eq6]
Subtracting [eq4] from [eq6] gives ...
(4a +b) -(3a +b) = (-5) -(-4)
a = -1 . . . . . . . . simplify
Filling that into [eq4], we get
3(-1) +b = -4
b = -1 . . . . . . . add 3
Putting the values for 'a' and 'b' into the first equation gives ...
-1 +-1 +c = 100
c = 102
Then the n-th term t(n) of the sequence is ...
t(n) = -n^2 -n +102
_____
Additional comment
As you might guess, there is a generic solution for quadratic sequences. In terms of the first term (a1), first first difference (d1), and second difference (d2), the coefficients can be written as ...
a = d2/2b = d1 -3ac = a1 -d1 +d2This sequence has first differences of -4, -6, -8, -10, and second differences of -2. Putting the sequence values into the above formulas, we find ...
a = -2/2 = -1b = -4 -3(-1) = -1c = 100 -(-4) +(-2) = 102 . . . . . as abovefind the value of x of parallelogram fast
In this figure to find value of x ,length of AC should be given...I dont see the length of AC in the picture..
inductive reason what is next number in sequence 400, 200, 300, 150, 250
Answer:
125
Step-by-step explanation:
400÷2 = 200
300÷2 = 150
so,
250÷2 = 125
Write the equation of the line that
Passes through (-9,4) and 10,-2)
Answer:
y = -6/19x - 2
Step-by-step explanation:
First we need to find the slope and we can do that by using slope-intercept form [ y2-y1/x2-x1 ].
-2-4/10-(-9)
-6/19
Second we can find the y-intercept using slope intercept form [ y = mx + b], the slope, and a given point.
y = -6/19x + b
4 = -6/19(-9) + b
4 = 54/19 + b
-2 = b
Third we will input all the data we solved for back into the formula.
y = -6/19x - 2
Best of Luck!
In the last year,a total of 14,905 earthquakes occurred in a country. Of these,88.8% were minor tremors with magnitude of 4.9 or less on the Richter scale. How many minor earthquakes occurred in the country in the last year?
Answer:
13,236 minor earthquakes occurred
Step-by-step explanation:
[tex]\frac{Part}{Total}[/tex]
"x" part amount of earthquakes
14,905 total amount of earthquakes
88.8 % part percentage of earthquakes
100% total percentage of earthquakes
[tex]\frac{x}{14905}[/tex] = [tex]\frac{88.8}{100}[/tex]
x = 14,905 × [tex]\frac{88.8}{100}[/tex]
x = 14,905 × 0.888 = 13,235.64 ≈ 13,236 minor earthquakes occurred
68. Evaluate - 2a + 6b when a = 6 and b = -3
-2a + 6b
= -2(6) + 6(-3)
= -12 + (-18)
= -30
[tex]\huge\textsf{Hey there!}[/tex]
[tex]\huge\textsf{-2a + 6b}[/tex]
[tex]\huge\textsf{= -2(6) + 6(-3)}[/tex]
[tex]\huge\textsf{= -12 + (-18)}[/tex]
[tex]\huge\textsf{= -12 - 18}[/tex]
[tex]\huge\textsf{= -30}[/tex]
[tex]\huge\textsf{Therefore, your answer is: -30}[/tex]
[tex]\huge\textsf{Good luck on your assignment \& enjoy your day! }[/tex]
~[tex]\huge\textsf{Amphitrite1040:)}[/tex]8) Carol earns $5.25 per hour. She worked 15 hours
last week. How much did he earn?
A. $82.50
B. $78.75
B. $52.15
D. $25.85
the answer is $78.75 i did the math to this problem
a circle has a radius of 4m. find the circumference of the circle show your worth and strictly answering used 3.14 for pi
Answer:
25.12
Step-by-step explanation:
Circumference (C) = 2πr
Where r = radius
We want to find the circumference of a circle with a radius of 4m ( this means that r = 4 )
To do so we simply plug in the value of r into the circumference formula
Formula: C = 2πr
r = 4 ( note that it says use 3.14 for π )
plug in values
C = 2(3.14)(4)
Simplify
C = 25.12
Piano lessons cost 30 dollars for 3/4 hour how much for an hour
Answer:
40
Step-by-step explanation:
Divide 30 by 3 to find 1/4. You get 10.
Multiply 10 by 4 to find 4/4. You get 40.
When one number is divided by another, the result
80 is diviser , 240 is dividend and 3 is quotient
[tex]-2b-(-7)=11[/tex]
[tex] - 2b - ( - 7) = 11 \\ \\ - 2b + 7 = 11 \\ \\ - 2b = 11 - 7 \\ \\ - 2b = 4 \\ \\ b = \frac{4}{ 2} \\ \\ b = 2[/tex]
Hope it help youAnswer:
b = -2
Step-by-step explanation:
[tex] - 2b - ( - 7) = 11[/tex]
[tex] - 2b + 7 = 11[/tex]
[tex] - 2b + 7 - 7 = 11 - 7[/tex]
[tex] - 2b = 11 - 7[/tex]
[tex] - 2b = 4[/tex]
[tex]b = 4 \div( - 2) = - 4 \div 2 [/tex]
[tex]\boxed{\green{b = - 2}}[/tex]
Integers bigger than 3 and smaller than 10
Answer:
There are 6 integers in-between 3 & 10
Explanation:
Integers are simply whole numbers.
4,5,6,7,8,9.
A triangle with a perimeter of 30 inches has sides of x+3, 2x+5, and x. find the value of x
Answer:
x = 5.5 inches.
Step-by-step explanation:
The perimeter is the sum of the 3 sides, so:-
x + x + 3 + 2x + 5 = 30
4x + 8 = 30
4x = 22
x = 5.5.
7. Jonathan rolled a 5,1, and 3 on a number cube. He made the greatest number possible. He estimated his number to the nearest 100. What is his number?
Answer:
500
Step-by-step explanation:
Greatest possible number with digits 5,1,3 is 531.
round to hundred =500
23 + 3.54 ÷ 3 − 1.089
Answer:
23.089
Step-by-step explanation:
Always divide first then continue with subtraction then addition.
Hey there!
Just do PEMDAS
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
23 + 3.54 / 3 - 1.089
= 23 + 3.54 / 3 - 1.089
3.54 / 3 = 1.18
= 23 + 1.18 - 1.089
23 + 1.18 = 24.18
= 24.18 - 1.089
= 23.091
Answer: 23.091
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
