Answer:
2 hours
Step-by-step explanation:
Distance = Rate * Time
If we replace these with the numbers in the problem and use "t" as the variable, it becomes:
30 miles = 15 mph * t
Now, to solve:
30 = 15t
divide both sides by 15
t = 2
add the units
time = 2 hours
5.
Find the exact value of sin 267° cos 27°
COS 267° sin 27°.
sin 267° cos 27º – cos 267° sin 27°
Enter your next step here
Evaluate the expression 2x-5 when x=3
Answer:
1
Step-by-step explanation:
as x=3
we substitute x with 3
so 2(3)-5
and 2(3) Is 6
so we do 6-5 which is 1
Answer: The answer is 1
Step-by-step explanation:
Find the theoretical probability.
Simplify completely.
Answer:
[tex] \frac{1}{8} [/tex]
Answer:
The correct answer is 1/4!
Step-by-step explanation:
On Acellus
Have a great day!
When you multiply or divide a positive and a negative number what will your answer always be?
Answer:
Step-by-step explanation:
When you multiply two negative numbers or two positive numbers then the product is always positive.
Answer:
Negative
If you multiply/divide a positive by a negative
Step by step explanation:
I need major help, I don't understand
Answer:
4, 10, 16, 22
Step-by-step explanation:
Plug in the variables according to the equation
So for the equation f(x)= 3x-2 plug if you were looking for A you would put A for f(x) and 2 where the x is so it would look like
A= 3(2)-2 which is A= 6-2 = 4
If we do the same for all of them then they would look like:
B= 3(4)-2
12-2= 10
C= 3(6)-2
18-2= 16
D= 3(8)-2
24-2=22
So youre basically replacing the f(x) and x by the table chart
I hope this helped :)
2ab+a^2b-2b-ab please factor it
Answer:
b(a+2)(a-1)
Step-by-step explanation:
b(2a+a^2-2-2-a)
Answer:
b (a + 2) (a - 1)
Step-by-step explanation:
1. First you need to factor out b from the equation because it is the one factor that they all have in common.
2ab + a²b - 2b - ab
b (2a + a² - 2 - a)
2. Then you just factor 2a + a² - 2 - a and remember the b
b (2a + a² - 2 - a)
b (a + 2) (a - 1)
check your answer:
b (a + 2) (a - 1)
b (a²- a + 2a - 2)
a²b - ab + 2ab - 2b
2ab + a²b -2b - ab
hope this helps!!
The ratio of children to adults at the football game was 23. If there were 140 children at the football game,
how many adults were there?
Answer:
Therefore, the number of adults at the football game was 6.
Step-by-step explanation:
Let A represents the number of adults and C represents the number of children.
Therefore, the ratio of children to adults is given as follows:
23:1 = C:A ....................... (1)
Since C = 140, this is substituted into equation (1) as follows:
23:1 = = 140:A ....................... (2)
Transforming equation (2) and solve for A, we have:
23 / (23 + 1) = 140 / (140 + A)
23 / 24 = 140 / (140 + A)
0.958333333333333 = 140 / (140 + A)
0.958333333333333 (140 + A) = 140
(0.958333333333333 * 140) + 0.958333333333333A = 140
134.166666666667 + 0.958333333333333A = 140
0.958333333333333A = 140 -134.166666666667
0.958333333333333A = 5.833333333333
A = 5.833333333333 / 0.958333333333333
A = 6.08695652173878
Rounding to a whole number, we have:
A = 6
Therefore, the number of adults at the football game was 6.
On the last school spirit day, 5 out of every 7 students wore school colors. Based on this information, if 560 students attend the school, write a proportion to determine how many of these students will wear school colors on the next spirit day.
Answer:400
Step-by-step explanation:
Multiply the total number of students by the ratio given
5/7(560)
5y=35+10x in standard form
Answer:
5y-10x=35
Step-by-step explanation:
The standard way to write a linear relationship between the x and y variables is through a homogeneous equation as a combination of the x and y variables with real coefficients.
Hair grows on your head faster than any other place on your body. Sue was interested in figuring out how fast her hair grows so she measured the growth. After 15 days her hair grew 3 mm. After 50 days, it grew 10 mm. If hair growth can be represented by a linear growth, then a) write a function for the growth G(x) as a function of x= number of days b) how long did it take Sue's hair to grow 17 mm?
mY HAIR dOesNt GRoW FaStEr oN My HHeAD
Which values of x are solutions to this equation?
х
= 2
O x = 4 or x = 8
O x = 2 or x = 6
O x = -2 or x = 2
OX= -8 or x = 8
Answer:
X= -8 or x= 8
Step-by-step explanation:
I took the test/quiz
Oliver shot 8 free throws at practice, making 6 free throws and missing 2 free throws. If Oliver equally likely to make a free throw as he is to miss a free throw, find the probability of this outcome by expanding (m + n)8. Round to the nearest percent if necessary.
Answer: m
8 + 8 m 7 n + 28 m 6 n 2 + 56 m 5 n 3 + 70 m 4 n 4 + 56 m 3 n 5 + 28 m 2 n 6 + 8 m n 7 + n 8
Step-by-step explanation: Just use binomial theorem
The probability of this outcome by expanding (m + n)8 is 4.
What is Probability?Probability is simply how likely something is to happen. Whenever we're unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they are.
Given:
Total free shots = 8
Oliver make free shots =6
Oliver missed free shots = 2
As, Oliver wanted the free throw and the free throw he missed turn both equal.
So,
=8 / 2
= 4.
Hence, probability of this outcome by expanding (m + n)8 is 4.
Learn more about probability here:
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please answer me after you click on the image
Answer:
2x - 3
Step-by-step explanation:
The missing side is the value of the perimeter subtract the sum of the 2 given sides, that is
? = 10x + 1 - (5x - 2 + 3x + 6)
= 10x + 1 - (8x + 4) ← distribute parenthesis by - 1
= 10x + 1 - 8x - 4 ← collect like terms
= 2x - 3
A company has 40 executives and 120 customer service representatives. If these are the only
employees, what percentage of the employees are executives? Explain how you determined the
percentage of employees are executives.
Answer:
25%.
Step-by-step explanation:
From the question given above, the following data were obtained:
Number of Executives = 40
Number of customer service representatives = 120
Percentage of the employees that are executives =?
Next, we shall determine the total number of employees in the company. This can be obtained as follow:
Number of Executives = 40
Number of customer service representatives = 120
Total number of employees =?
Total number of employees = (Number of Executives) + (Number of customer service representatives)
Total number of employees = 40 + 120
Total number of employees = 160
Finally, we shall determine the percentage of the employees that are executives as follow:
Number of Executives = 40
Total number of employees = 160
Percentage of the employees that are executives =?
Percentage = Number of Executives/ total employees × 100
Percentage = 40/160 × 100
Percentage = 0.25 × 100
Percentage = 25%
Therefore, the percentage of the employees that are executives is 25%
the graph shows the proportion of red and blue food coloring ,that taylor mixes to make purple ,what is the slope of the line ?tell what in the problem situation ,math question
Answer: nothing
Step-by-step explanation:
A) {(0,1),(1,2),(2,3),(3,4),(1,5)}
B) {(0,0),(1,1),(2,4),(3,9),(4,16)}
C) {(-2,4),(-1,1),(0,0),(2,4),(3,9)}
Which one is a function?
And which is is not Non-function?
PLZ ANSWER PLZ 15 POINTS JUST PLZ
A pilot flew a 400-mile flight in 2.5 hours flying into the wind . Flying the same rate and with the same wind speed, the return trip took only 2hours with a tailwind
Answer:
20
Step-by-step explanation:
pilot flew a 400-mile flight in 2.5 hours flying into the wind . Flying the same rate and with the same wind speed, the return trip took only 2hours with a tailwind
The speed can be defined as the ratio distance over time, but in this case the pilot is flying at the speed of the plane as well of speed of the wind. We can denote speed of plane as "s" and speed of the wind as "k"
Then the speed of the plane=(s-k) this is because it is moving in the opposite direction of the wind.
But From the question, the plane distance=400mile and the corresponding time =2.5 h
Then the speed of the plane=(s-k) =400mile/2.5
=160mph
By the time it return from trip, the speed the plane flew with is (s+k) because the wind is at the rear.
From the question, the plane distance=400mile and the corresponding time =2 h
Then (s+k)= (400/2)
(s+k)=200mph
have to find volume and surface area but idk how
Answer:
volume 1050 [tex]in^{3}[/tex]
surface area 859 [tex]in^{2}[/tex]
Step-by-step explanation:
volume is length times width times height (7*25*12)/2
surface area is area of all the sides added together
2(25*12)+(12*7)+ 2([tex]\frac{7*25}{2}[/tex])
Answer:
Volume = 1008
Surface Area = 840
Step-by-step explanation:
Find the other leg of the right triangle using the Pythagorean theorem. Answer is 24. Google formula for volume, log in answers. Google formula for surface area, log in answers.
14V + 6 = 2(5 + 7V) - 4
Answer:
0=0
Step-by-step explanation:
The input is an identity: it is true for all values
Tell me if you need an explanation :)
Answer:
V = Any Real Number
Step-by-step explanation:
14V + 6 = 10 + 14V - 4
14V = 14V
Could be any number
What is the value of x in the figure?
400
709
A.
40°
B.
70°
C.
80°
D.
120°
E.
150°
Answer:
e
Step-by-step explanation:
1
X + 5 = -10
(a)
How do I isolate x?
A Add by 5 on both sides
B Subtract by 5 on both sides
Multiply by 5 on both sides
D Divide by 5 on both sides
(b)
X=
Answer:
Subtract by 5 on both sides.
Step-by-step explanation:
x+5 = -10. if you subtract both sides by 5, you will get x+5-5=-10-5, which can be simplified to x=-15.
A square has sides that measure 6 inches each. What is the ratio of the perimeter of the square to the area of the square?
Answer:
2 : 3
Step-by-step explanation:
Given the square has a side of 6 in , then
perimeter = 4 × 6 = 24 in
area = 6² = 36 in²
Then ratio of perimeter : area
= 24 : 36 ( divide both parts by 12 )
= 2 : 3
Statistics Probability
A survey of a freshmen English class asked students whether or not they ate breakfast the morning of the survey. The results are included in the table to the right.
(a) What is the probability that a randomly selected student ate breakfast?
(b) Of all students, what is the probability that a randomly selected student is female and ate breakfast?
(c) What is the probability a randomly selected student is male, given that the student ate breakfast?
(d) What is the probability that a randomly selected student ate breakfast, given that the student is male?
(e) What is probability of "is male" or "did not eat breakfast"?
(f) What is the probability of "is male and did not eat breakfast?
Answer:
Explained below.
Step-by-step explanation:
Denote the variable as follows:
M = male student
F = female student
Y = ate breakfast
N = did not ate breakfast
(a)
Compute the probability that a randomly selected student ate breakfast as follows:
[tex]P(Y)=\frac{n(Y)}{N}\\\\=\frac{198}{330}\\\\=0.60[/tex]
(b)
Compute the probability that a randomly selected student is female and ate breakfast as follows:
[tex]P(F\cap Y)=\frac{n(F\cap Y)}{N}\\\\=\frac{121}{330}\\\\=0.367[/tex]
(c)
Compute the probability a randomly selected student is male, given that the student ate breakfast as follows:
[tex]P(M|Y)=\frac{n(M\cap Y)}{n(Y)}\\\\=\frac{77}{198}\\\\=0.389[/tex]
(d)
Compute the probability that a randomly selected student ate breakfast, given that the student is male as follows:
[tex]P(Y|M)=\frac{n(Y\cap M)}{n(M)}\\\\=\frac{77}{154}\\\\=0.50[/tex]
(e)
Compute probability of the student selected "is male" or "did not eat breakfast" as follows:
[tex]P(M\cup N)=P(M)+P(N)-P(M\cap N)\\\\=\frac{n(M)}{N}+\frac{n(N)}{N}-\frac{n(M\cap N)}{N}\\\\=\frac{n(M)-n(N)-n(M\cap N)}{N}\\\\=\frac{154+132-77}{330}\\\\=0.633[/tex]
(f)
Compute the probability of "is male and did not eat breakfast as follows:
[tex]P(M\cap N)=\frac{n(M\cap N)}{N}\\\\=\frac{77}{330}\\\\=0.233[/tex]
50 multiplied by 1,856
Answer:
92800
Step-by-step explanation:
Brainliest?
Hope this helps
9x + 11 = 110
what is x ?
Answer:
x = 11, lucky you, this stuff is easy
Step-by-step explanation:
110 - 11 = 99
9 x 11 = 99
99 + 11 = 110
Answer:
x = 11
Step-by-step explanation:
9x + 11 = 110
- Pass the 11 to the other side of the equation (grouping similar terms) and then perform the following operation:
9x = 110 - 11
9x = 99
- Now we have to obtain x by dividing 9 on both sides of the equation:
(9/9)x = 99/9
x = 99/9, which is divisible by 11.
this is a math equation, solve the inequality for x. please.
Answer:
X ≤ 0
Step-by-step explanation:
Trust
The total number of equally-sized tiles on a circular floor
A. Circumference
B.Area
Answer:
area
Step-by-step explanation:
area............
The total number of equally-sized tiles on a circular floor is Area.
Given that, the total number of equally-sized tiles on a circular floor.
What is area of a circle?The area of a circle is the space occupied by the circle in a two-dimensional plane. Alternatively, the space occupied within the boundary/circumference of a circle is called the area of the circle. The formula for the area of a circle is A = πr², where r is the radius of the circle.
The area of a circle is the amount of space enclosed within the boundary of a circle. The region within the boundary of the circle is the area occupied by the circle. It may also be referred to as the total number of square units inside that circle.
Hence, the total number of equally-sized tiles on a circular floor is Area.
Learn more about the area of a circle here:
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I need help, this is geometry
Answer:
∠P = 39º
∠Q=120º
∠R = 21º
Step-by-step explanation:
m∠P+m∠Q+m∠R=180º (sum of ∠s in a triangle)
2x-3+6x-6+x=180º (substitution)
9x-9=180º (algebra)
9x=189º (algebra)
x=21º (algebra) (this is ∠R)
(2x-3)=39º (algebra) (this is ∠P)
6x-6=120º (algebra) (this is ∠Q)
Answer:
∠R = 21°
∠Q = 120°
∠P = 39°
Step-by-step explanation:
Step 1:
6x - 6° + 2x - 3° + x = 180° Sum of a Δ
Step 2:
9x - 9° = 180° Combine Like Terms
Step 3:
9x = 189° Add 9 on both sides
Step 4:
x = 189° ÷ 9 Divide
Step 5:
x = 21°
Step 6:
2 ( 21 ) - 3 = ∠P = 39°
Step 7:
6 ( 21 ) - 6 = ∠Q = 126°
Step 8:
∠R = 21°
Answer:
∠R = 21°
∠Q = 120°
∠P = 39°
Hope This Helps :)
HELP IS FOR A TEST IF I FAIL MY MOM WILL MAKE ME MOVE SCHOOL· One gym charges an initial fee of $30 and a monthly fee of $10. · The other gym charges a monthly fee of $12. Which equation could be used to find out how many months, m, it would take for both memberships to cost the same? A. 12m + 30 = 10m + 30 C. 10m = 12m 12m + 30 = 10m B. 10m + 30 = 12m
Answer:
10m +30=12m
Step-by-step explanation:
y=10x +30
y=12x
Can someone please help me with this it would be very much appreciated
Answer:
I'm not sure what you're asking, but I got x=45
Step-by-step explanation:
x+3x+x+3x=8x=360 degrees
360/8=45 so x=45