Answer:
5,790.0425
Step-by-step explanation:
Does anyone know the answer???
Answer:
That's the right answer
Step-by-step explanation:
Hope to help
mark me as brainlinest plss
A motorboat travels 82 miles in 2 hours going upstream. It travels 106 miles going downstream in the same amount of time. What is the rate of the boat in still water and what is the rate of the current
let's recall d = rt, or namely distance = rate * time.
b = speed of the boat in still water
c = speed of the current
when going Upstream, the boat is not really going "b" fast, is really going slower, is going "b - c", because the current is subtracting speed from it, likewise, when going Downstream the boat is not going "b" fast, is really going faster, is going "b + c", because the current is adding its speed to it.
[tex]\begin{array}{lcccl} &\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\ \cline{2-4}&\\ Upstream&82&b-c&2\\ Downstream&106&b+c&2 \end{array}\hspace{5em} \begin{cases} 82=(b-c)2\\\\ 106=(b+c)2 \end{cases} \\\\[-0.35em] ~\dotfill[/tex]
[tex]\stackrel{\textit{using the 1st equation}}{82=(b-c)2}\implies \cfrac{82}{2}=b-c\implies 41=b-c\implies \boxed{41+c=b} \\\\\\ \stackrel{\textit{substituting on the 2nd equation}}{106[~(41+c)+c~]2}\implies \cfrac{106}{2}=41+2c\implies 53=41+2c \\\\\\ 12=2c\implies \cfrac{12}{2}=c\implies \blacksquare~~ 6=c ~~\blacksquare~\hfill \blacksquare~~ \stackrel{41~~ + ~~6}{47=b} ~~\blacksquare[/tex]
Of 750 people surveyed, 440 were male and 345 had cell phones. Of those with cell phones, 205 were female. What is the probability that a person surveyed was male or had a cell phone?
before i continue my keyboard is malfunctioning so bear with me
answer:
25/68
Step-by-step explanation:
total number-750
males-440
females-750-440=310
those with Cell -345
females with cell -205
males-345-205=140
male with cell -140/345
=25/68
Answer:
25/68
Step-by-step explanation:
total number=750
Male=440
Female=750-440
=310
People with cell phone= 345
Female with cell phone=205
Male=345-205
=140
Male with cell phone=140/345
=25/68
Solve the following equation:-
2x(3+5)+6 x4
Answer:
40
Step-by-step explanation:
Using BODMAS
[tex](2 \times (8)) + (6 \times 4)[/tex]
[tex]16 + 24 = 40[/tex]
Answer:
40
Step-by-step explanation:
Using PEMDAS
ParenthesesExponentsMultiplicationDivisionAdditionSubtractionSimplify terms in the parentheses.
2 × (3 + 5) + 6 × 42 × 8 + 6 × 4Multiplying
2 × 8 + 6 × 416 + 24Adding
16 + 2440
What is the range of the data set?
Answer:
In statistics, the range is the spread of your data from the lowest to the highest value in the distribution.
Step-by-step explanation:
Answer:
The range of a set of data is the difference between the highest and lowest values in the set.
From the diagram below, choose the correct letter for each of the following parts of
a circle:
a) a major arc
b) a minor sector
c) a major segment
F
A
D
B
E
E
Answer:
A) F
B) B
C) C
Step-by-step explanation:
F is a major arcB is a minor sector C is a major segmentscircle AB represents sectors
circle CD represent segments
circle EF represent arcs
у= 1/5x -4 #1
у= -4/1х + 3 | #2
X
y
у
the left is number 1 graphed. middle is number 2.
right is number 3.
There are 72 6th graders, 18 chose popularity, what is the percentage of 6th graders that chose popularity?
How many solutions are there to the equation below?
6x +33 = 6(x+6)
Answer:
no solution
Step-by-step explanation:
6x + 33 = 6x + 36
33 ≠ 36
Answer:
no solutions
Step-by-step explanation:
6x + 33 = 6(x + 6) ← distribute parenthesis
6x + 33 = 6x + 36 ( subtract 33 from both sides )
6x = 6x + 3 ( subtract 6x from both sides )
0 = 3 ← not possible
This indicates the equation has no solution
]
Pls help! I'm a bit confused!!
Answer:
Step-by-step explanation:
So whenever you see alphabets in math, these are called variable. Like the word suggests, variables can have different values depending on the problem.
For the first problem, the variable k equals 10, and the question asks you when k=10, what does that make k+26. All you do is substitute the value of k with the given value of k=10, and you get 10 + 26 = 36.
This way you can solve the rest of them.
Ask me if you get confused and we can work on rest of them.
Answer:
36529412.5112Step-by-step explanation:
Q1
k = 1010 + 2636Q2
n = 134(13)52Q3
a = 27 and b = 327/39Q4
x = 63(6) - 1418 - 144Q5
z = 2(2)² + 8.54 + 8.512.5Q6
x = 4 and y = 84(36 - 8)4(28)112Help, what do I do here?
Answer:
draw the 2 lines
Step-by-step explanation:
take the first equation, start with X =1 and calculate y , then plot the point. repeat for other X values. join the points up with a ruler you can extent beyond the first and last points
repeat for second equation
where the lines cross is your intersection, the coordinates of this point is the answer.
good luck
Multiply. 2 5/8⋅(−4 3/4)
A. −12 15/32
B. −8 15/32
C. −7 3/8
D. −2 1/8
option b
see attachment for solution
hope it helps...!!!
The length of a rectangular poster is 9 more inches than two times its width. The area of the poster is 161 square inches. Solve for the dimensions (length and width) of the poster.
Answer:
Width = 7 inches
Length = 23 inches
Step-by-step explanation:
Let :
length = 2x + 9width = xEquating to area :
(2x + 9)(x) = 1612x² + 9x = 1612x² + 9x - 161 = 02x² - 14x + 23x - 161 = 02x(x - 7) + 23(x - 7) = 0x - 7 = 0x = 7Dimensions are :
Width = 7 inchesLength = 2(7) + 9Length = 23 inchesAnswer:
Length: 23 inches
Width: 7 inches
Explanation:
Width: wLength: 2w + 9Area of rectangle: Length × Width(2w + 9) × (w) = 1612w² + 9w - 161 = 02w² + 23w - 14w -161 = 0w(2w + 23) -7(2w +23) = 0w = 7, -11.5As length measure cannot be negative. Width is +7 inches
Length: 2w + 9 = 2(7) + 9 = 14 + 9 = 23
Pls answer I’ll mark brainly
Answer:
52 miles
Step-by-step explanation:
since 1 unit is 26 miles and the distance from Daytona beach to Orlando on the map is 2 units just multiply 26 by 2 to get 52 miles
What critical value of t* should be used for a 95% confidence interval for the population mean based on a random sample of 21 observations
To find the degrees of freedom in the given question, we have to take into consideration of the confidence interval as well as degrees of freedom. The critical t-value in this data set is 2.086
What is Confidence Interval?This is the range of values that we observe in our sample and for which we expect to find the value that accurately reflects the population.
We can also say that it is a range of values so defined that there is a specified probability that the value of a parameter lies within it.
Data;
sample size (n) = 21degree of freedom (df) = n-1 = 21 - 1 = 20At a 95% confidence level, the t is
α = 1 - 0.95
The critical t-value in this data set is 2.086
Learn more on t-value here;
brainly.com/question/4079902
#SPJ1
X/3 + 1 = ×/8 + 1/11
solve the question please pls
Answer:
x/3+3=x/8+1/11
x+9/3=11x+8/88
88(x+9)=3(11x+8)
88x+729=33x+24
88x-33x=729-24
55x=705
x=705/55
x=12.80
Mike paid $\$1.25$ for a stamp three years ago. He was just offered double that amount for the stamp. Assuming the stamp's offer price doubles every three years, how many dollars will he be offered in 12 more years
Answer: $40
Step-by-step explanation:
If the worth of the stamp is double that of its original price 3 years ago ($1.25), the current price of the stamp should be $2.50. If that doubles every 3 years the answer should look something like this:
3 years: $5 (2.50X2=5)
6 years: $10 (5X2=10)
9 years: $20 (10X2=20)
12 years $40 (20X2=40)
In 12 years the stamp will be worth $40.
If Kate has an apple, an orange, a pear, a banana, and a kiwi at home and she wants to bring three pieces of fruit to school, how many combinations of fruit can she bring?
125
3!
10
5!
Answer:
it 5
Step-by-step explanation:
|z-7|-|z-9| if z<7
PLSSS QUICKLY HELP
Answer:
-2
Step-by-step explanation:
If you please tell me what this I will give 15 points and of thanks!
Answer:
y = x+8
Step-by-step explanation:
You find the difference between the value of y and value of x which is 8 so no matter what x is you always add 8 to get the y value. :)
Answer:
y = x + 8
Step-by-step explanation:
Find the difference between each x and y-value :
Let's take the pair (18, 26)
y = x + _26 = 18 + __ = 8Verify (x-2) is a factor
of Q(x)=x²-3x²-4x+12
Answer:
(x - 2) is not a factor of Q(x)
Step-by-step explanation:
if (x - h) is a factor pf f(x) then f(h) = 0
if (x - 2) is a factor of Q(x) then Q(2) = 0
Q(2) = 2² - 3(2)² - 4(2) + 12
= 4 - 3(4) - 8 + 12
= 4 - 12 + 4
= - 8 + 4
= - 4
since Q(2) ≠ 0 then (x - 2) is not a factor of Q(x)
However , if the polynomial was meant to be
Q(x) = x³ - 3x² - 4x + 12 , then
Q(2) = 2³ - 3(2)² - 4(2) + 12
= 8 - 12 - 8 + 12
= 0
then (x - 2) is a factor of Q(x) = x³ - 3x² - 4x + 12
PLEASE HELP ME IVE BEEN SITTING HERE FOR HOURS
Answer:
0-9: 4
10-19: 4
20-29: 1
30-39: 4
40-49: 2
Step-by-step explanation:
Since frequency means how many times it showed up in the list
this all adds up to 15, making it an easy check.
hope this helps:)
Which of the following is an equation of a line perpendicular to the equation
y =3x + 1?
O A. y = 3x + 5
O B. y=x+5
X
3
O C. y = -3x+5
OD. y - 3x+5
O 5
3
WILL MARK BRAINLIEST . PLEASE HELP . Pigeons can fly at a rate of 168ft every 6 minutes, and ravens can fly at a rate of 472ft every 12.5 mins. Which unit rate, per hour, represents the speed of the faster bird?
Answer:
2,265.60 ft/hr
Step-by-step explanation:
168ft/6min = 28ft/min * 60min= 1,680ft/hr
472ft/12.5min= 37.76ft/min * 60min= 2,265.60ft/hr
is 5/10 Equivalent to 1/4?
No
[tex] \frac{5}{10} = \frac{5 \times 1}{5 \times 2} = \frac{1}{2} \\ [/tex]
The following box plot shows the number of years during which 40 schools have participated in an interschool swimming meet:
At least how many schools have participated for more than 1 year and less than 6 years?
4 schools
8 schools
10 schools
20 schools
Answer:
about 4 or 8
Step-by-step explanation:
Answer: 4 schools
Step-by-step explanation:
prove that √5 + 7 is irational
Explanation:
What are irrational numbers?
Irrational numbers include numbers like: π, 12π, ∛2, √11, √12, 4√2
Note: √4 = ± 2, √16 = ± 4 and others which completely square root are still rational numbers as they can be written as whole number integers.
Here given number: √5 + 7
It is an irrational number as it cannot be simplified further to a whole number. In decimals: 9.236067977... and keeps repeating. It is an example of non-recurring decimals. Hence, it is an irrational number.14. A store was selling packs of paper for $1.82 a pack. Rosa spent $12.74 on the
packs of paper.
a. Write an equation to find the number of packs of paper, p. Rosa bought.
Answer:
she bought 7 packs of paper
Step-by-step explanation:
12.74/p = 7
Find the length of ST. ST=?
Answer:
ST = 7
Step-by-step explanation:
By the theorem of intersecting secants outside of a circle, we have:[tex]RS(RS +ST) = RQ (RQ+QP)[/tex][tex]\implies 11(11 +ST) = 9 (9+13)[/tex][tex]\implies 11(11 +ST) = 9 *22[/tex][tex]\implies 11 +ST =\frac{ 9 *22}{11}[/tex][tex]\implies 11 +ST =18[/tex][tex]\implies ST =18-11[/tex][tex]\implies\huge\orange{\boxed{ ST =7}}[/tex]Solve the following systems of equations. To unlock puzzle three
find the product of each solution (ordered pair -x and y value)
and then find the mean of all five products.
Answer:
Step-by-step explanation:
1,)
3x+y=4 <-Equation 1
2x-y=6 <-Equation 2
Step 1 Eliminating Y Multiply negative both side
-[3x +y = 4 ] -
-3x-y = -4 <-Equation 3
Equation 2 to Equation 3
2x-y=6
-
-3x-y = -4
= 5x = 10
x =2
Substituting X to Equation 1
3x+y=4
3(2) + y =4
6 + y = 4
y = -2
Therefore x =2 and y = -2
