Simplify and determine the coefficient of (-2/3x)(3y)(-2x). 4,-4,1/3,1
Answer:
4
Step-by-step explanation:
on edge
The mean income per household in a certain state is $9500 with a standard deviation of $1750. The middle 90% of incomes are between what two values
Answer: The middle 90% of incomes are between $6621.25 and $12378.75 .
Step-by-step explanation:
The critical z-value for 90% confidence = 1.645
Given: Mean income per household = $9500
standard deviation = $1750
then, middle 90% of incomes are between $(9500-(1.645)(1750)) and (9500+(1.645)(1750))
i.e. middle 90% of incomes are between $6621.25 and $12378.75.
Hence, the middle 90% of incomes are between $6621.25 and $12378.75 .
Do we flip the inequality 2x<-6
No.
When you divide by a positive value you do not flip the inequality, only when dividing by a negative value.
2x < -6
To solve for c you divide both sides by 2, which is a positive value so the inequality stays the same:
X < -6/2
X < -3
Adrian's gerbil weighed 68.59 grams at the beginning of the summer. During the summer, the gerbil gained 24.6 grams.
Estimate the weight of the gerbil at the end of the summer by rounding each value to the nearest whole number.
Answer:
94 grams
Step-by-step explanation:
Adrian gerbil weighed 68.59 grand at the beginning of the summer
During the summer the gerbil gained 24.6 grams
Therefore the weight of the gerbil at the end of the summer can be calculated as follows
= 69 + 25
= 94 grams
Therefore the weight of the gerbil at the end of the summer is 94 grams
meredith deposited $200 into an account
√3x-1=7 solve for x. What is the root? If there is no root, choose none.
b) how would
You work out 7 2/3 + 2 1/5
Answer:
9 13/15
Step-by-step explanation:
Find a common denominator which is 15
2 10. 1. 3
— = ——. —— = ——
3 15 5 15
7 + 2 = 9
10/15 + 3/15 = 13/15
9 13/15
Answer:
Step-by-step explanation:
7+2=5
I would convert 2/3 into 10/15 and convert 1/5 into 3/15 and add
10/15 + 3/15 = 13/15 and the answer would be
5 13/15
The degree of the polynomial function f(x) is 3.
The roots of the equation f(x)=0 are −4, 0, and 2.
Which graph could be the graph of f(x)?
Answer:
there is no image
Step-by-step explanation:
mang 2) Write the equation of a line that is parallel to –3x + 2y = 6 and goes through the point (-1,-4).
Step-by-step explanation:
[tex]y - y1 = m(x - x1)[/tex]
[tex]y - ( - 4) = \frac{3}{2} (x - ( - 1)[/tex]
[tex]y = \frac{3(x + 1) - 8}{2} [/tex]
[tex]y = \frac{3}{2} x - \frac{5}{2} [/tex]
An a plane flies 3.705 miles in 75 hours What is the speed of the airplane in miles per hour? Use the equation d = it, where d is distance is rate and tis time
The airplane's speed is miles per hour?
Answer:
20.243. (Rounded to the nearest hundredths)
Step-by-step explanation:
75 ÷ 3.705 = 20.24291498
HELP PLEASE I really need the answer
Answer:
1. 1.85
2. 18.5
3. 185
4. 1850
5. Kristen needs '1850' years of yarn
Step-by-step explanation:
Mandy took a total of 6 quizzes over the course of 3 weeks. At this rate, attending 5 weeks of school this quarter, how many quizzes will Mandy have taken?
Answer
2 is the unit rate
Step-by-step explanation:
6/3 =2x5=10
Answer:
2
Step-by-step explanation:
Allison buys a spool of thread for sewing. There are 10 yards of thread on the spool. She uses 9 meters. How much thread is left on the
spool in meters? Round your answer to the nearest thousandth, if necessary.
The amount of meters left is 0.144 meters
First and foremost, it should be noted that: 1 yard = 0.9144 meter
Therefore, 10 yards to meters will be:
= 0.9144 × 10
= 9.144 meters
Since Allison uses 9 meters, the amount of thread that is left on the
spool will be:
= 9.144 meters - 9 meters
= 0.144 meters
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Can somebody help me with this problem?
Answer:
You need to use y=mx+b
In this case, m=1.5 so that means that y=1.5x
Now you must find out the y intercept which is "b" in y=mx+b
I think it is the first one (y=1.5x+72)
====================================================
Explanation:
The given slope is m = 1.5
We want the line to go through (x,y) = (6,72). This means x = 6 and y = 72 pair up together.
We'll plug those m, x, and y values into the equation below to solve for b
y = mx+b
72 = 1.5*6+b
72 = 9+b
72-9 = b ... subtract 9 from both sides
63 = b
b = 63 ... y intercept
-------------------
Since m = 1.5 and b = 63, we go from y = mx+b to y = 1.5x+63
The time needed to complete a job is normally distributed with a mean of 1 hour and standard deviation of 10 minutes. Probability to complete the job in hone hour or more, but less than 70 minutes is:
Answer:
The value is [tex]P(60 < X < 70) = 0.34134[/tex]
Step-by-step explanation:
From the question we are told that
The mean is [tex]\mu = 1 \ hour = 60 \ minutes[/tex]
The standard deviation is [tex]\sigma = 10 \ minutes[/tex]
Generally the 1 hour is equivalent to 60 minutes
Generally the probability to complete the job in one hour or more, but less than 70 minutes is mathematically represented as
[tex]P(60 < X < 70) = P(\frac{60 - 60 }{10 } < \frac{X - \mu}{\sigma } < \frac{70 - 60 }{10 } )[/tex]
=> [tex]P(60 < X < 70) = P(0 < \frac{X - \mu}{\sigma } < 1 )[/tex]
[tex]\frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )[/tex]
=> [tex]P(60 < X < 70) = P(0 <Z < 1 )[/tex]
=> [tex]P(60 < X < 70) = P(Z < 1) - P(Z < 0 )[/tex]
From the z table (Z < 1) and (Z < 0 ) is
[tex]P(Z < 1) = 0.84134[/tex]
and
[tex]P(Z < 0 ) = 0.5[/tex]
=> [tex]P(60 < X < 70) = 0.84134 - 0.5[/tex]
=> [tex]P(60 < X < 70) = 0.34134[/tex]
Luis bought stock at $50.70. The next day, the price increased $17.75. This new price changed by -3-%
3
4
the following day. What was the final stock price, rounded to the nearest cent? Is your answer reasonable?
Complete the explanation.
Answer:
Starting price is $50.70.
Next day the price is $50.70 + $17.75 = $68.45
This price then changed by: [tex]-3\frac{3}{4}\%=-3.75\%[/tex].
So in order to calculate that we do: [tex]68.45 - (3.75/100*68.45)=65.883125 =\$65.88[/tex]
Therefore final price is $65.88.
Yes, this is reasonable.
3) Which of the following is the slope of a line that is parallel to the line y = 8x + 3
Answer:
8 is slope
Step-by-step explanation:
if it is parallel it is the exact same slope and this equation has a slope of 8
Write a linear equation for the line that passes
through the two points (-6, 7) and (-3, 6). Show all
work
Answer:
y=-1/3x+5
Step-by-step explanation:
to find the slope you have to use the equation y₂-y₁/x₁-x₂
which will give you 6-7/-3-(-6) --> -1/3
the product of this equation is your slope
Write a polynomial function that has a leading coefficient of 1, and the given zeros
at 3, 5, and -i.
9514 1400 393
Answer:
p(x) = x^4 -8x^3 +16x^2 -8x +15
Step-by-step explanation:
Assuming you want real coefficients, the imaginary root means its conjugate is also a root. In factored form, the polynomial is ...
p(x) = (x -3)(x -5)(x -i)(x +i) = (x^2 -8x +15)(x^2 +1)
p(x) = x^4 -8x^3 +16x^2 -8x +15
What times what equals -20 and those same numbers added together equals 8
Answer:
10 and -2
Step-by-step explanation:
Step-by-step explanation:
What is the distance form X to the rock ? Plz help
Answer:
50 or 60 feet
Step-by-step explanation:
For the number line shown, which statement is not true?
A number line shows a to the left of 0 and b to the right of 0. Point a is closer to 0 than point b.
|a| > b
–|b| a
|a| < |b|
Answer:
1a8?
Step-by-step explanation:
thi is how
The incorrect statement for the given condition is;
⇒ |a| > b
What is Number line?
Number line is a horizontal line where numbers are marked at equal intervals one after another form smaller to greater.
Given that;
A number line shows 'a' to the left of 0 and 'b' to the right of 0. Point a is closer to 0 than point b.
Now,
Since, Point a is closer to 0 than point b.
And, Number 'a' to the left of 0 and 'b' to the right of 0.
Hence,
Let the number 'a' = - 1
Then, The number 'b' = 2
So, We get;
|a| = |-1| = 1
And, |b| = 2
Clearly, |a| < b
Thus, The incorrect statement for the given condition is;
⇒ |a| > b
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Translate the sentence into an equation.
Five more than the product of a number and 2 equals 9.
Use the variable w for the unknown number.
Answer:
(w * 2) + 5 = 9
Explanation:
Product means multiplication. Five more than means adding 5. So, add five to the answer of w times 2 is 9.
(w * 2) + 5 = 9
Thus the equation is 5 + 2w = 9 and the unknown number is 2.
Given,
Five more than the product of a number and 2 equals 9.
We will use the unknown number as w.
We will form an equation.
Find the equation.
Let the unknown number be w.
"Five more than the product of a number and 2 equals 9".
we can write this as:
5 + w x 2 = 9
5 + 2w = 9
Find the unknown number.
We have,
5 + w x 2 = 9
5 + 2w = 9
Subtract 5 on both sides.
5 + 2w - 5 = 9 - 5
2w = 4
Divide both sides by 2.
w = 2
Thus the equation is 5 + 2w = 9 and the unknown number is 2.
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which ordered pair is a solution of the equation y=4x?
a-(1,3)
b-(-1,-4)
c-(-4,-1)
d-(1,-4)
When does a quadratic equation have no solutions
Answer:
A quadratic equation has solutions when the graph crosses the x-axis. There are two ways the graph can have no solution, when the "a" value is greater than 0 and is translated vertically above the x-axis, or if the opposite occurs, when the "a" value is negative and is translated vertically below the x-axis.
Simplify 2y-3x2 +6x2 - 3y
Answer:3
x2−y
Step-by-step explanation:
What is the solution to this system of equations?
y = x + 6
y = -0.5x + 3
A. (2, -1)
B. (-2,4)
C. (-1,2)
D. (4,-2)
-3= 6 +?
Help ASAP!!
Answer:
-9
Step-by-step explanation:
-3 = 6 - 9
-3 = -3
Hello please help will give brainliest!
Answer:
I'm pretty sure it's A because it's measured with Miles pH no hour per mile
Answer:
A
Hope this helped ;)
4. What is the equation of a line perpendicular to 2x - 8y = 3 that contains the point (-8, 11)?
A. 2x - 8y = 104
C. 8x + 2y = 42
B. 2x + 8y = 104
D. 8x - 2y = 86
Answer:
C
Step-by-step explanation:
It's y=-4/1-21
The equation of a line is given by:
y = mx + c
where m is the slope of the line and c is the y-intercept.
The equation of the line is y = (-1/2)x + 7
What is an equation of a line?The equation of a line is given by:
y = mx + c
where m is the slope of the line and c is the y-intercept.
Example:
The slope of the line y = 2x + 3 is 2.
The slope of a line that passes through (1, 2) and (2, 3) is 1.
We have,
Let the equation of the line is y = m(1)x + c
The line is perpendicular to 2x - 8y = 3
The means,
2x - 8y = 3
-8y = 3 - 2x
y = -(3 - 2x)
y = -3 + 2x
y = 2x - 3
This is in the form of y = m(2)x + c
m(2) = 2 and c = -3
Now,
The line y = m(1) + c is perpendicular to y = m(2) + c
So,
m(1) x m(2) = -1
m(1) = -1/2
Now,
The line contains (-8, 11) = (x, y).
This means,
y = m(1)x + c
11 = (-1/2) x -8 + c
11 = 4 + c
c = 11 - 4
c = 7
Now,
The equation of the line is y = (-1/2)x + 7
Thus,
The equation of the line is y = (-1/2)x + 7
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