Answer:
Perform the binomial multiplication to determine the value of the letters in the table.
A = –3x
B = 14x
C = –21
Which letters from the table represent like terms?
A and B
Answer:
The one above me is 100% correct
Step-by-step explanation:
I just did the assignment and it's correct.
please help me wth this
NEED HELP ASAP WILL GIVE BRAINLIEST
Answer:
B
Step-by-step explanation:
Set the equation by adding 34 to each side
Use the quadratic formula: x = -b± [tex]\sqrt{b^2-4ac} \\[/tex] over 2*a
1 =a
-10 = b
34 =c
Insert these values into the quadratic formula
Mike measured the height of an art frame as 6.33 feet, but the actual height was 7 feet. What is the percent of error in Mike's measurement? (5 points)
a
9.45%
b
9.57%
c
10.58%
d
13.33%
Step-by-step explanation:
Difference between measured vs actual
= 7ft - 6.33ft = 0.67ft.
Percent of error = (0.67ft/7ft) * 100% = 9.57%. (B)
Answer:
9.57%
Step-by-step explanation:
A zookeeper took a random sample of 30 days and observed how much food an elephant ate on each of those days. The sample mean was 350 kg and the sample standard deviation was 25 kg. Find the 95% confidence interval for how much food the elephant eats.
Answer:
341.95≤x≤358.95
Step-by-step explanation:
The confidence interval formula is expressed as;
CI = xbar±(z×s/√n)
xbar is the mean sample
s is the standard deviation
z is the z score at 95% confidence interval
n is the sample size
xbar = 350kg
z = 1.96
s = 25kg
n = 30
Substitute
CI = 350±(1.96×25/√30)
CI = 350±(1.96×4.564)
CI = 350±(8.946)
CI = (350-8.946, 350+8.946)
CI = (341.05, 358.95)
Hence the 95% confidence interval for how much food the elephant eats us 341.95≤x≤358.95
The original cost of an item is $64 but you have to pay $78.08. What is the markup of the item as a percent
Answer:
22%
Step-by-step explanation:
$78.08 - $64 = $14.08
$14.08 * 100% / $64 = 22%
Solve for n.
d=4m + 7n
n
Answer:
n = [tex]\frac{d-4m}{7}[/tex]
Step-by-step explanation:
Given
d = 4m + 7n ( subtract 4m from both sides )
d - 4m = 7n ( isolate n by dividing both sides by 7 )
[tex]\frac{d-4m}{7}[/tex] = n
Answer:
n = d - 4m ÷ 7
Step-by-step explanation:
d = 4m + 7n
d - 4m = 7n
7n = d - 4m
n = d - 4m ÷ 7
Thus, n = d - 4m ÷ 7
-TheUnknownScientist
inverse laplace of L^-1 {5s/s^2 + 3s - 4}
Answer:
[tex]L^{-1} (\frac{5s}{s^{2}+ 3 s -4 } )[/tex] = [tex]4e^{-4t} + e^{t}[/tex]
Step-by-step explanation:
Step(i):-
Given
[tex]L^{-1} (\frac{5s}{s^{2}+ 3 s -4 } )[/tex]
Factors of s² + 3s - 4
= s² + 4s - s -4
= s( s +4 ) -1 (s +4)
= (s-1)(s+4)
[tex]L^{-1} (\frac{5s}{s^{2}+ 3 s -4 } )[/tex]
= [tex]L^{-1} (\frac{5s}{s+4)(s-1) } )[/tex]
By using partial fractions
[tex](\frac{s}{s+4)(s-1) } ) = \frac{A}{s+4} + \frac{B}{s-1}[/tex] ..(i)
s = A ( s-1) + B( s+4) ....(ii)
Put s= 1 in equation (ii) , we get
1 = B(5)
[tex]B = \frac{1}{5}[/tex]
s = -4 in equation (ii) , we get
-4 = -5A
[tex]A =\frac{4}{5}[/tex]
Step(ii):-
now the equation (i) , we get
[tex](\frac{s}{s+4)(s-1) } ) = \frac{4}{5(s+4)} + \frac{1}{5(s-1)}[/tex]
[tex]L^{-1} (\frac{s}{s+4)(s-1) } ) = 5( L^{-1} \frac{4}{5(s+4)} + 5L^{-1} \frac{1}{5(s-1)}[/tex]
By using inverse Laplace transform formula
[tex]L^{-1} (\frac{1}{s-a} ) = e^{at}[/tex]
[tex]L^{-1} (\frac{1}{s-1} ) = e^{t}[/tex]
[tex]L^{-1} (\frac{1}{s+4} ) = e^{-4t}[/tex]
[tex]L^{-1} (\frac{s}{s+4)(s-1) } ) = 5( L^{-1} \frac{4}{5(s+4)} + 5L^{-1} \frac{1}{5(s-1)}[/tex]
= [tex]4e^{-4t} + e^{t}[/tex]
If I do my maths homework at a rate of 1.6 questions per minute, it will take me 47 minutes to complete. What rate is needed to complete it in 34 minutes?
Give your answer correct to 1 decimal place.
Answer:
Step-by-step explanation:
reqd. rate=(1.6)×47÷34≈2.2 questions per minute.
The required rate to complete the question in 34 minutes is given as 2.2 questions per minute.
What is the rate of change?Rate of change is defined as the change in value with rest to the time is called rate of change.
As mentioned in the question, in homework rate of doing questions is 1.6 questions per minute.
It took 47 minutes to complete the whole expression,
Total questions in the homework given by,
Total question = rate × time
Total question = 1.6 × 47
Total questions ≈ 75 questions
Now,
If the time to complete the question is 34 minutes, the rate required is given by,
Rate = total question/time
Rate = 75/34
rate = 2.2 questions per minute.
Thus, the required rate to complete the question in 34 minutes is given as 2.2 questions per minute.
Learn more about the rate of change here: https://brainly.com/question/13103052
#SPJ2
Helpppppppppppppppppppppplppoollooppp
Answer:
I wouldn't advise putting answers from test on brainly its against the honor of code and you will get warned.
Step-by-step explanation:
What is the slope of the line y=3
A. 3
B. -3
C. 0
D. Undefined
Answer:
0
Step-by-step explanation:
Slope is the rise (change in y) over the run (change in x).
y=3 is simply a horizontal line.
hope this helps!
2. The graph below shows how the water level of a swimming pool changes as the pool is
filled with water. What does the slope of the graph represent?
7
6
Depth of Water In
Swimming Pool (In foot)
N
1 2 3 4 5 6 7
Time (in hours)
A the time it takes to fill the pool completely
B. the maximum depth of the water in the pool
C. the rate at the pool fills in feet per hour
D. the rate at which the pool fills in hours per foot
Answer:
C. the rate at the pool fills in feet per hour
Step-by-step explanation:
Given
The attached graph
Required
What does the slope represent?
The slope of any graph can be calculated using:
[tex]Slope = \frac{Rise}{Run}[/tex]
Where:
Rise = The change in the vertical axis
Run = The change in the horizontal axis within the same interval as the Rise
The vertical axis measures depth in feet and the horizontal axis measures time in hour.
So:
[tex]Slope = \frac{Depth}{Time}[/tex]
or
[tex]Slope = \frac{Feet}{Hour}[/tex]
This means that the slope measures rate in feet per hour
equation of the line through point (5,4) and perpendicular to y=−4/3x−2.
Answer:
y=3/4x+1/4
Step-by-step explanation:
Perpendicular lines have slopes that are negative and reciprocal. If you multiply them together, the result is -1.
So, to find the slope of the new line, we can use this equation:
-4/3m=-1
multiply both sides by 3/-4
m=3/4
So the slope of the new line is 3/4
Here's the equation so far:
y=3/4x+b (b is a placeholder)
we can substitute the point (5,4) into the equation, since the line is going to pass through it.
4=3/4(5)+b
4=15/4+b
1/4=b
So the line is y=3/4x+1/4
Hope this helps!
Drag and drop each number to its correct position on the number line.
PLEASE HELP!
Answer:
where is the numberline miss
Answer:
you forgot the picture
:-(((
Evaluate b - y for b= -13 and y= -50.
Answer:
37
Step-by-step explanation:
because you are basically adding -13 to 50 because the minus and the -50 cancel eachother out
simplify -8z^8+(-14z^8)
Answer:
-22x^8
Step-by-step explanation:
-8z^8 + (-14z^8)
z^8 = z^8
-8 - 14 = -22
-22z^8
Could someone help with me his before I go to sleep and I hope when I wake up the answer is here pls
50!!! Points Paul needs 27 plants to fill his garden and has $99 to
spend. Lilies cost $5 each and tulips cost $2 each. Which
system represents the number of lilies (1) and tulips (t)
Paul can buy?
[tex]\boxed{\boxed{\pink{\bf \leadsto Option \ A \ is \ correct .}}}[/tex]
Step-by-step explanation:Given that , Paul needs 27 plants to fill his garden and has $99 to spend. Lilies cost $5 each and tulips cost $2 each.
Tulips are represented by t .Lilies are represented by l .Now we need to find which set of linear equations represent the above situation. So ,
Sum of number of lilies and tulips is 27 .
[tex]\implies \bf n( Tulips) + n(Lilies ) = 27 \\\\\bf\implies \boxed{ \bf l + t = 27 }[/tex]
Now , cost of each lily is $5 and tulip is $2 . And he has $99 in total . So ,
[tex]\bf\implies n_{tulips} \times cost_{tulip} + n_{lilies} \times cost_{lilies} = Money \ that \ Paul \ has. \\\\\bf \implies t\times \$2 + l \times \$5 = \$ 99 \\\\\implies \boxed{\bf 2t + 5l =\$ 99 }[/tex]
Hence we can see that our ans matches with option (a) which is ,
[tex]\red{\bf Option \ A}\begin{cases} \bf l + t = 27 \\\\\bf 2t + 5l = 99 \end{cases}[/tex]
Hence option (A) is correct .Find the value of 0 and round to the nearest whole degree
Answer:
57°
Step-by-step explanation:
[tex] \theta = {sin}^{ - 1} \bigg( \frac{36}{43} \bigg) \\ \\ \theta = 56.846591584 \degree\\ \\ \theta \approx 57 \degree\\ \\ [/tex]
Exam Guidelines
Exam Instructions
Question 15 of 20:
Select the best answer for the question.
15. Simplify: (3 x 22) = 6 + [28 – (4)?1
A. 55
B. 23
ООО
C. 32
D. 46
What is special about y coordinate that goes with the x coordinate of 1on a proportional gragh
Answer:
The first coordinate (usually the x-coordinate) is called the domain and the second (usually the y-coordinate) is called the range. If tou remember from earlier chapters the domain contains values that correspond to the independent variable whereas the range contains values corresponding to the dependent variable.
Step-by-step explanation:
I majored in Mathematics
6,6,5,5, 4, 7,4,8, 4, 6, 5, 7,8
Find the modes of this data set.
what’s the mode?
Answer: 6, 5, 4
Step-by-step explanation:
The mode is the number that you see the most. 6, 5, and 4 appear 3 times in the set.
Answer:
6,5,4
Step-by-step explanation:
the all tie in repeating 3 times. The mode is what repeats the most. since 6,5,4 all repeats 3 times they tie for mode.
Josslyn needs to earn at least $420 a week during her summer break to pay for college. She works two jobs, one at a restaurant that pays $18 an hour and the other tutoring for $16.50 per hour.
Let x be the number of hours she works at the restaurant and let y be the number of hours she works tutoring. Write an inequality that models this situation.
Answer:
x+y[tex]\geq[/tex]420
18x+16.50y[tex]\geq[/tex]420
Step-by-step explanation:
Answer:
18x + 16.50y ≥ 420
Step-by-step explanation:
The scatter plot shows the heights x (in inches) and the weights y (in pounds) of 10 people. Find the weight of the person who is 70 inches
tall. Then find the height of the person who weighs 125 pounds.
Answer:
70 inches weighs 160
125-pound person is 66 inches tall
Step-by-step explanation:
A druggist has two mixtures of a certain chemical and water, one containing 10% of the chemical and the other containing 40% of the chemical. How much of each mixture should he use to make 10 ounces that contain 25% of the chemical? How many ounces of chemical are in the final mixture? 1 2.5 7.5
Answer:
the answer is= 2.5
Step-by-step explanation:
good luck!
Please help me ASP with this I got 2 minutes to do it
Answer: 5/6
Step-by-step explanation:
Answer:
I believe the answer is 1 1/6
Step-by-step explanation:
Here is how I got 1 1/6
4 1/3 - 3 1/2
4 - 3 = 1
1/3 - 1/2 = 2/6 - 3/6 = 1/6
Answer = 1 1/6
1) Integers get bigger the further left they are located on a number line.
True
False
I need help!!!!!!!
Answer:
False
Step-by-step explanation:
Answer:
False
Step-by-step explanation:
The left of the number line is the domain of negative numbers. As you go left on the number line, the integers are smaller.
Help please! I’ll give brainliest!
Find the first six terms of the sequence.
a1 = 4, an = 2 • an-1
Answer:
p
Step-by-step explanation:
Best and Correct answer gets Brainliest!!!
Answer:
Line A
Step-by-step explanation:
Line A crosses 5 at y when it hits 1 at x, meaning that constant of proportionality is 5. Trust me ; D.
help asap i’ll give brainliest
Answer:
answers in this order
5
4
3
2
1
6
Step-by-step explanation:
i kno that the way these numbers are are kinda sus but this is correct
hope this helps <3