Answer:
2.7/8×16
(2.7×16)/8
43.2/8
5.4
Pleasee helpp
Choose the variable expression that matches this phrase.
... the difference between the number of leaves on the tree and the 520
leaves on the ground.
A. t + 520
B. 5200
C. 520/t
D. t - 520
Answer:
the answer is D because "difference" is a key word for subtraction
Step-by-step explanation:
Find all the values of x where the tangent line is horizontal.
f(x) = 2x^3 + 42x^2 + 270x + 11
Answer:
If I calculated correctly, the tangent line is horizontal where x ≈ -5.3 + 9.3i, and -5.3 - 9.3i
I'm somewhat concerned at having gotten complex numbers, and strongly recommend going through the steps to see if I missed anything. I checked it myself and don't see any errors.
Step-by-step explanation:
You can do this by taking the derivative of the function and solving for zero:
f(x) = 2x³ + 32x² + 220x + 11
f'(x) = 6x² + 64x + 220
f'(x) = 2(3x² + 32x + 110)
We can't factor that further, so let's do it the long way, starting by letting f'(x) equal zero:
0 = 2(3x² + 32x + 110)
0 = 3x² + 32x + 110
0 = 9x² + 96x + 990
0 = 9x² + 96x + 256 + 734
0 = (3x + 16)² + 734
(3x + 16)² = -734
3x + 16 = ± i√734
3x = -16 ± i√734
x = (-16 ± i√734) / 3
x ≈ (-16 + 27.9i) / 3, and (16 - 27.9i) / 3
x ≈ -5.3 + 9.3i, and -5.3 - 9.3i
I'm always wary when I end up with complex numbers. I'd suggest double checking everything here, but I'm fairly certain I did everything correctly.
Measure of ANGLES. NEED HELP QUICK PLZ
Answer:
Angle 1 is 69°. Angle 2 is 111°
Explanation:
Simplify the expression 2(7*-3)
Answer: 11 + x
HOPE THIS HELPS
What is the average rate of change for this quadratic function for the interval
from x = 2 to x = 4?
Answer:
B. -6
Step-by-step explanation:
Average rate of change = [tex] \frac{f(b) - f(a)}{b - a} [/tex]
Where,
b = 4, f(b) = -15
a = 2, f(a) = -3
Plug in the values
[tex] \frac{-15 - (-3)}{4 - 2} [/tex]
[tex] = \frac{-12}{2} = -6 [/tex]
The average rate of change of the given quadratic function in the given interval is -6.
How to get the average rate of change?On the graph, we can see that:
f(4) = -15
f(2) = -3
Then the average rate of change on that interval will be:
[tex]y = \frac{f(4) - f(2)}{4 - 2} = \frac{-15 + 3}{2} = -6[/tex]
Then we conclude that the average rate of change of the given quadratic function on the given interval is -6.
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The volume of this prism is
blank cubic inches.
a.171
b.20
c.140
Answer:
c
Step-by-step explanation:
length times width times height so 8 times 5 times 3.5 equals 140
Please help with #s 8, 9, 10
Answer:
8. y=-1/2-7
9. Parallel
10. Neither
Hope this helps!
Answer:
1. y = -1/2x - 7
2. Parallel
3. Neither
Exponential form of 1/8
I believe its 2 ^ -3
because
1/8 = 1/2^3 = 2^-3
PLS HELP ASAP!! I WILL GIVE BRAINLIEST TO FIRST RIGHT ANSWER!!
Move words to the blanks and equations to the boxes to prove that vertical angles <1 and <3 are congruent
Answer:
Answer below :)
Step-by-step explanation:
Hi there!
1. supplementary
2. m<1 + m<2 =180, m<2 + m<3 = 180
3. Supplementary; congruent
It goes in this order^
I hope this helps!
Help please, I don’t get it
9514 1404 393
Answer:
£66
Step-by-step explanation:
I like to work problems involving ratios by considering the value of each "ratio unit." Before we get that far, we need to finish the division ratios.
Dan : Eva = 3 : 4
There are two remaining divisions, each getting half Eva's amount. That is, each of those gets 4/2 = 2 "ratio units." Then the full division ratios are ...
Dan : Eva : Freddie : Gok = 3 : 4 : 2 : 2
for a total of 11 ratio units. Those 11 units represent £242, so each one represents £242/11 = £22. That makes Dan's 3 units worth ...
3×£22 = £66 . . . the amount Dan gets
What are the terms in the expression 2w + 11t + 4y
A 2, 11, and 4
B w, t, and y
C 17
D 2w, 11t, and 4y
9514 1404 393
Answer:
D. 2w, 11t, and 4y
Step-by-step explanation:
The terms are what are separated by + or - signs. They generally consist of a product of numbers and variables, or they may be a number or variable by itself.
_____
Additional comment
When you're learning about terms, you are generally concerned with polynomials. For that purpose, a "term" is as described above.
More generally, any designated expression or part of an expression can be referred to as a "term". For example, we might refer to √(b²-4ac) in the expression ...
[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]
as "the radical term", or we might refer to 2a as "the denominator term". In this expression, the term (b²-4ac) is given the name "discriminant".
72 + (43 -11) i need help plz
Answer:
104
Step-by-step explanation:
43 - 11 = 32
32 + 72 = 104
DIRECTIONS: WRITE A MULTIPLICATION NUMBER SENTENCE
(EQUATION) FOR EACH OF THE FOLLOWING:
6). YOU LOST 3 FIVE DOLLAR BILLS. HOW MUCH DID YOU LOSE?
7). JAMES LOST 7 POUNDS EACH MONTH FOR 4 MONTHS. HOW
MUCH DID HE LOSE?
Answer:
6. $15
7. 28 pounds
Step-by-step explanation:
6. 3 x 5 = 15
7. 7 x 4 = 28
Are the graphs of the lines in the pair parallel? Explain.y=−32x+2
3x+2y=8
Answer:
no
Step-by-step explanation:
if to re-write the second equation:
y= -3/2 x+8
and to compare it with the first one, then -3/2≠-32.
It means, the given lines are not parallel.
There is a line that includes the point (-5, 2) and has a slope of -3. What is its equation in slope-intercept form?
Answer:
y=-3x-13
Step-by-step explanation:
Answer:
1 .
Step-by-step explanation:
select the exspreshion that is equivalent to 45x+10
A 1(9x+2)
B 5(5x+2+4x)
C 5(10+4x+5x)
D 3(3x+2)
Answer:
B
Step-by-step explanation:
A Bloomberg BusinessWeek North American subscriber study collected data from a sample of 2861 subscribers. Fifty-nine percent of the respondents indicated an annual income of $75,000 or more, and 50% reported having an American Express credit card.
1.What is the population of interest in this study?
2.Is annual income a qualitative or quantitative variable?
3.Is ownership of an American Express card a qualitative or quantitative variable?
4.Does this study involve cross-sectional or time series data?
5. Determine whether the following two statistical inferences may be made based on the sample data collected.
An estimated 59% of the population of subscribers has an annual income of $75,000 or more.
An estimated 60% of the population of subscribers has an American Express credit card.
Answer:
Bloomberg Business week NorthAmerica Subscribers
; Quantitative ; Qualitative ; No ; Yes ; No
Step-by-step explanation:
Sample size = 2861
Percentage respondent with annual income ≥ 75000 = 59%
Percentage having an American Express credit card
1.What is the population of interest in this study?
Bloomberg business week NorthAmerica Subscribers
2. Quantitative
Annual income is quantitative because it is numeric, that is repress red by numbers which can be used to perform sensible numerical computation such as additions, mean, multiplication and so on.
3.Qualitative
No ; ownership of an American express card is a Qualitative variable as it will take responses as (yes or no), even when represented or coded as numbers, it will make no numerical sense to peform mathematical calculations with it.
4.
No ; time series data has to do with data collected with respect to a particular month, year or seasonal data.
5. Determine whether the following two statistical inferences may be made based on the sample data collected.
An estimated 59% of the population of subscribers has an annual income of $75,000 or more.
Yes ;
An estimated 60% of the population of subscribers has an American Express credit card.
No ; the research says 50% and not 60%
A diagonal of a quadrilateral is a line segment that joins two ……………… vertices
of the quadrilateral.
Answer:
We conclude that a diagonal of a quadrilateral is a line segment that joins two opposite vertices of the quadrilateral.
Step-by-step explanation:
Please check the attached diagram.From the attached diagram, it is clear that the line segment AC of the parallelogram quadrilateral joins two opposite vertices A and C.
It is also clear that the other line segment BD of the parallelogram quadrilateral joins two opposite vertices B and D.
Therefore, we conclude that a diagonal of a quadrilateral is a line segment that joins two opposite vertices of the quadrilateral.
Need help ASAP
Will Mark, you brainlist
Answer:
(4,-1)
Step-by-step explanation:
Yell at me if im wrong.
Answer:
¼
Step-by-step explanation:
Compare the coordinates of two points to find the rate of change.
Using (0,-5) and (4,-6):
Δy/Δx = ((-6)-(-5))/(4-0) = (-1)/4 = -¼
1) sin 102
in standard position
Answer:
What are you asking? Whats the problem?
Answer:
sin 102 cant be put into standard position its already in standard position if you want to covert to rectangular it would be sin (102).
Step-by-step explanation:
A principal of 2200 is invested at 9% interest, compounded annually. How much will the investment be worth after 6 years?
Answer:
it would be worth 3388
Step-by-step explanation:
9% of 2200 is 198
198×6=1188
1188+2200=3388
5. If f(x) = -x2 - 7x +4 and g(x) = -5x - 3, what is the value of f(-2)-g(6)
We are getting a solution of negative 19 is that correct?
9514 1404 393
Answer:
47
Step-by-step explanation:
Evaluate the functions and find the required difference.
f(-2) = -(-2)^2 -7(-2) +4 = -4 +14 +4 = 14
g(6) = -5(6) -3 = -33
Then the difference is ...
f(-2) -g(6) = 14 -(-33) = 14 +33 = 47
3
John sold 750 tickets to a concert for $6,300. If the price of a student ticket was
$8 and the price of an adult ticket was $10, how many adult tickets did John sell?
6
The number of the tickets sold by john is 150.
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that John sold 750 tickets to a concert for $6,300. If the price of a student ticket was $8 and the price of an adult ticket was $10. The number of the tickets will be calculated as below:-
s and a are the numbers of student and adult tickets, respectively.
s+a = 750
s = 750-a
8s + 10a = 6300
8(750-a) + 10a = 6300
6000-8a + 10a = 6300
2a = 300
a = 150
Therefore, the number of tickets sold by john is 150.
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Dewayne is thinking of a number n, and he wants his sister to guess the number. His first clue is that seven less than five times his number is between thirteen and eighteen. Write a compound inequality that shows the range of numbers that Dewayne might be thinking of.
Answer:4<n<5
Step-by-step explanation: 13<5n-7<18
20<5n<25
4<n<5
Inequalities help us to compare two unequal expressions.The compound inequality that shows the range of numbers that Dewayne might be thinking of is 8<(5n-7)<13.
What are inequalities?Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.
The given clue by Dewayne can be written in the form of inequality as shown below. Therefore, we can write,
Five times the number → 5nSeven less than five times a number → 5n-7Seven less than five times his number is between thirteen and eighteen → 8 < (5n - 7) <13.Hence, the compound inequality that shows the range of numbers that Dewayne might be thinking of is 8<(5n-7)<13.
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If (3, -2) is a solution of the linear equation 3x – py – 7 =0, then find the value of p.
Answer:
-1
Step-by-step explanation:
So to solve this, it tells you that (3, -2) is a solution so you can substitute x = 3 and y = -2 into the equation which would look like this:
[tex]3*3-p*-2-7 = 0[/tex]
Then, you solve the equation for p:
first, simplify the left side
[tex]9 +2p-7=0\\2+2p=0[/tex]
subtract 2 from both sides
[tex]2p=-2[/tex]
divide both sides by 2
[tex]p=-1[/tex]
Now, you have p = -1!
hope that makes sense :D
Can you do the math please
Answer:
The answer is A.
x-3 1/2=8.25
im working on: Solving Equations Addition/Subtraction
Answer:
x = 11.75
Step-by-step explanation:
hope this was helpful!
Answer:
11.75
Step-by-step explanation:
The number of shots taken and points scored by 8 players in a basketball game are shown in the table.
Number of shots taken 1 4 7 8 10 11 11 14
Number of points scored 0 4 8 9 14 12 15 22
A basketball coach is investigating whether the number of shots taken can be used to predict the mean number of points scored. Assuming the conditions for inference have been met, which of the following inference procedures is the most appropriate to estimate the mean change in the number of points scored for each increase of 1 shot taken?
a. A one-sample t-interval for means.
b. A linear regression t-interval for slope.
с. A two-sample t-interval for a difference between means.
d. A matched-pairs t-interval for a mean difference.
e. A two-sample z-interval for a difference between proportions
Answer:
d. A matched-pairs t-interval for a mean difference.
Step-by-step explanation:
d. A matched-pairs t-interval for a mean difference.
There are many situations in which two samples are not independent. This happens when the observations are found as pairs and the observations are related in pairs.
When the observations from two samples are paired either naturally or by design , the difference between two observation of each pair is treated as normal population with mean ud= u1=u2 and unknown standard deviation, one sample t- test can be performed on them.
This is called matched pairs t- interval for a mean difference.
In this experiment the basketball coach is investigating whether the number of shots taken can be used to predict the mean number of points scored.
We want to estimate the mean change in the number of points scored for each increase of 1 shot taken.
The two samples are not independent.
solve this equation for x: 1/4 x = 7
Answer:
28
Step-by-step explanation:
because if 28 divide by 4, it gets 7
z mark the brainliest
Is 1/2 equivalent to 7/12
Answer: No because 1/2 is equal to 6/12 because 1 x6=6 and 2x6 =12 which makes 1/2 equivalent to 6/12 not 7/12
Answer:
no this is false
Step-by-step explanation:
7 is not half of 12
