Answer:
The answer is 122 1/2 minutes.
Step-by-step explanation:
I got this answer by first subtracting 5.25-3.50=1.75 and that was how many minutes it took per mile then I multiplied 1.75x70=122.50 to get my answer.
If my answer is wrong im sorry this is my first one on this site.
3x^2+x-6
Can you factor this?
Answer (it stays the same):
[tex]3x^{2} + x - 6[/tex]
I hope this helps!
Can you please help me
Answer:
3. D
4. I
5. E
6. G
7. J
8. B
9. A
10. H
For questions 2 and 3. It is known that the mean diameter of pine trees in a national forest is 9.6 (inches) with a standard deviation 2.4 (inches). Assuming that the tree diameters are distributed normally. If a pine tree is to be selected randomly from this forest, what is the probability that its diameter will fall between 7.2 inches and 14.4 inches?
Answer: 0.8185
Step-by-step explanation:
Let X represents the tree diameters that are distributed normally.
Given: Mean [tex]\mu=9.6\text{ inches}[/tex], Standard deviation [tex]\sigma=2.4\text{ inches}[/tex]
The probability that its diameter will fall between 7.2 inches and 14.4 inches will be:
[tex]P(7.2<X<14.4)=P(\dfrac{7.2-9.6}{2.4}<\dfrac{X-\mu}{\sigma}<\dfrac{14.4-9.6}{2.4})\\\=P(-1<Z<2)\ \ \ \ [Z=\dfrac{X-\mu}{\sigma}]\\\\=P(Z<2)-P(Z<-1)\\\\=P(Z<2)-(1-P(Z<1))\\\\=0.9772-(1-0.8413)=0.8185\ [\text{By p-value table}][/tex]
Hence, required probability = 0.8185
Solve the following inequality.
2P - 3 > P + 6
Answer:
P>9(P is bigger than 9 )
Step-by-step explanation:
2P-P>6+3
P>9
HELP PLEASE WILLMARK BRAINLIEST
Answer: D
Step-by-step explanation:
Solve the equation.
512^x= 8
O {3}
O {1/3}
O {-1/3}
O {-3}
Answer:
it's the 2nd one
Step-by-step explanation:
its 1/3
g The probability of rolling a single die and obtaining a two is one-sixth. The probability of rolling a single die and obtaining a five is one-sixth. What is the probability of rolling a single die and obtaining either a two or a five
Answer:
33.33% or [tex]\frac{2}{6}[/tex]
Step-by-step explanation:
A single die has a total of six different possible outcomes (1, 2, 3, 4, 5, 6). Since the numbers two and five are only two of the six possible outcomes that means that the possibility of getting one of these two numbers on a single roll is [tex]\frac{2}{6}[/tex] . If we divide this fraction and multiply the result by 100 (0.333 * 100 = 33.33) we see that there is a 33.33% chance of you rolling either a two or a five.
Subtract 2(1/2) - 4(1/4)
A. -2(1/4)
B. -1(3/4)
C. 1(3/4)
D. 7(3/4)
Thirty-six students go on a field trip. The students are divided into groups of 7 students. How many groups of 7 will there be?
Answer:
There will be 5 full groups of 7 with 1 person left over so you can make it 6 if you want
Step-by-step explanation:
7 times 5 equals 35 plus 1 equals 36
URGENT HELP I'M DUMB
if a store sells 4lb or apples for 6 dollars how much for money is it for 1lb of apples
Answer:
1.5 dollars
Step-by-step explanation:
just divide 6 by 4 lol.I also am bad at math too dw
Answer:
1.50 is my answer that I would put so
A manufacture has been selling 1300 television sets a week at $390 each. A market survey indicates that for each $25 rebate offered to a buyer, the number of sets sold will increase by 250 per week. a) Find the demand function p ( x ) , where x is the number of the television sets sold per week.
Answer:
P = - 0.1x+520
Step-by-step explanation:
Finding the demand function p ( x ) , where x is the number of the television sets sold per week.
each $25 rebate offered to the buyer, the number of sets sold will increase by 250 , hence slope = -25/250 = -1/10 Equation will be
P-390/x-1300 = -25/250
Cross multiplying
250(P-390) = -25(x-1300)
250p-97500 = -25x+32500
250p = -25x+32500+97500
250p = -25x + 130000
Divide both sides by 250
250p/250 = (25x + 130000)/250
P = - 0.1x+520
Hence, the demand function p(x) is
= - 0.1x+520
brainliest will be awarded
Answer:
-5x+6-3x=22 is x = -2
10-9x+6=34 is x = -2
Step-by-step explanation:
13 + ( 4 ÷ 2) × 5 - 17 =? The 4 the number 3 is next to it but it's suppose to look like the small one.
Answer:
6
Step-by-step explanation:
13 + (4÷2) * 5 - 17
= 13 + 2* 5 - 17
= 13 + 10 - 17
= 23 - 17
= 6
plz help plzzz WILL GIVE BRAINLEST
Answer:
1.2876 is the answer I got.
What is the equation of the graphed line written in
standard form?
O x=-3
O y=-3
O x + y = -3
O x-y=-3
Answer: y=-3
Step-by-step explanation:
The capacities (in ampere-hours) were measured for a sample of 120 batteries. The average was 178 and the standard deviation was 12. Find a 95% lower confidence bound for the mean capacity of this type of battery. Round the answer to two decimal places. The lower confidence bound is .
Answer: A 95% lower confidence bound for the mean capacity of this type of battery = 175.85
Step-by-step explanation:
Given: The capacities were measured for a sample : n= 120 batteries.
[tex]\overline{x}=178[/tex] and [tex]\sigma=12[/tex]
lower confidence bound= [tex]\overline{x}-z^c\times\dfrac{\sigma}{\sqrt{n}}[/tex]
Critical z value for 9%% confidence = 1.96
So, a 95% lower confidence bound for the mean capacity of this type of battery will be :
[tex]178-(1.96)\dfrac{12}{\sqrt{120}}\\\\=178-(1.96)(1.0954451)\\\\=(1.96)(1.0954451)\approx175.85[/tex]
Hence, a 95% lower confidence bound for the mean capacity of this type of battery = 175.85
The measures of two vertical angles are 58° and (3x + 4)". Find the value of x.
Answer:
x = 18°
Step-by-step explanation:
Vertical angles can be defined as a pair of angle formed when two (2) lines intersect. These angles formed during the intersection of the two (2) lines are opposite to each other.
Hence, vertical angles are always equal to one another.
From the question, we have;
58° = (3x + 4)°
Rearranging the equation;
[tex] 3x = 58 - 4[/tex]
[tex] 3x = 54[/tex]
[tex] x = \frac{54}{3}[/tex]
x = 18°
Therefore, the value of x is 18 degrees.
12 coaches and 30 player how many groups can be forms
Answer:
The biggest number of groups that can be formed is 6, because six is the greatest common factor of 12 and 42. There will be 2 coaches in each group because 6 x 2 = 12 and 7 players in each group because 7 x 6 = 42.
Step-by-step explanation:
hope that helped
A. K=3/2 and y=15
B. K=1/4 and y=5
Answer:
A.K= 2/3 Y=15
SORRY I ONLY DID A
Using exponents, what is the simplified form of 15x6/3x2
F. 5x"
G. 5x3
H. 5x
I. 5
Answer:
[tex] \frac{15 {x}^{6}}{3 {x}^{2} } = 5 {x}^{4} [/tex]
If f(x)=6x2-4, what is f(1)?
Answer:
f−1(x)=√6(x+4)6,−√6(x+4)6
Plz let me know if im wrong!!!
Answer:
are u sure this is written correctly?
3x - 6 = 8x + 14 Please help me and thank you.
Answer:
x = -4
Step-by-step explanation:
3x - 6 = 8x + 14
-6 = 5x + 14
-20 = 5x
-4 = x
x = -4
the sum of 2 numbers is 21 the second number is six times the first
Answer:
[tex]\huge\boxed{\text{Numbers: 3, 18}}[/tex]
Step-by-step explanation:
We can create two equations and solve the system of equations to find both the numbers. Let's represent the numbers as a and b.
We can create two equations:
[tex]a+b=21[/tex]
[tex]b=6a[/tex]
We can now substitute the value of b (6a) into the first equation.
[tex]a + (6a) = 21[/tex]
Combine like terms:
[tex]7a=21[/tex]
Divide both sides by 7:
[tex]a=3[/tex]
Now we know the first number is 3. We can plug this value into one of the equations to find b. Let's plug it into [tex]b=6a[/tex].
[tex]b = 6 \cdot 3\\\\b = 18[/tex]
So our numbers are 3 and 18.
Hope this helped!
Step-by-step explanation:
We can create two equations and solve the system of equations to find both the numbers. Let's represent the numbers as a and b.
We can create two equations:
a+b=21a+b=21
b=6ab=6a
We can now substitute the value of b (6a) into the first equation.
a + (6a) = 21a+(6a)=21
Combine like terms:
7a=217a=21
Divide both sides by 7:
a=3a=3
Now we know the first number is 3. We can plug this value into one of the equations to find b. Let's plug it into b=6ab=6a .
b=6⋅3
b=18
So our numbers are 3 and 18.
Hope this helped!
All of the following expressions are equivalent to 12w + 6, except:
(3 + 6 w)2
6(1 + 2 w)
-1(-12 w - 6)
-1(12 w - 6)
Answer:
Except for -1 (12w - 6).
The arrow on each of the spinners with be spun one time .which of the following shows all the possible outcome when each spinner is spun once .
Answer:
Option (2)
Step-by-step explanation:
If we spin spinner 1, the possible outcome on this spinner for a single spin will be either RED (R) or GREEN (G).
Similarly, if we spin spinner 2, possible outcomes for a single spine will be 1 or 2 or 3 or 4.
If we spin both the spinners possible outcomes from both the spinners in a single spin will be,
Red with 1 Or Red with 2 Or Red with 3 Or Red with 4,Or
Green with 1 Or Green with 2 Or Green with 3 Or Green with 4
Symbolically,
R1, R2, R3, R4, G1, G2, G3, G4
Therefore, Option (2) will be the answer.
A shoe store provides women’s shoes for sizes 5 to 11. Write a compound inequlity for shoes sizes they do not
provide for.
Answer: x<5 or x>11
Step-by-step explanation:
The expression on the left side of an equation is shown below.
-6x+6-0
If the equation has an infinite number of solutions, which expression can be written in the box on the other side of the
equation?
-6
1
-6x
- 6x+6
D: -6x +6
Step-by-step explanation: Told ya.............
How many ways can a store manager arrange a group of 1 team leader and 3 team workersfrom his 25 employees
Answer:
2300 waysStep-by-step explanation:
in this problem, we are expected to use commination to arrive at a solution
Given data
number of employee= 25
number of team=3
The expression for combination is given as
C(n,r)=(nr)=n!/(r!(n−r)!)
C(25,3)=25!/(3!(25−3)!)
C(25,3)=25!/(3!(22!)
C(25,3)=25*24*23*22!/3!(22!)
C(25,3)=25*24*23*/3!
C(25,3)=25*24*23*/3*2*1
C(25,3)=25*24*23*/6
C(25,3)=13800/6
C(25,3)=2300 ways
The number of ways where a store manager arranges a group is 50,600.
Given that,
There is a group of 1 team leader and 3 team workers from his 25 employees.Based on the above information, the calculation is as follows:
[tex]= ^25C_4 \times 4C_1\\\\= \frac{25!}{4!(25-4)!} \times \frac{4!}{1!(4-1)!} \\\\= \frac{25!}{4! \times 21!} \times \frac{4!}{1! \times 3!} \\\\= 12,650 \times 4[/tex]
= 50,600
Therefore we can conclude that the number of ways where a store manager arranges a group is 50,600.
Learn more: brainly.com/question/16115373
Find equation for a vertical line passing through the point (-12,-4)
Answer:
x = -12
Step-by-step explanation:
This is a vertical line, so the equation will be of the form x = k, where k is any x-value.
The conclusion that x = -12 was found because the x-value in the point was -12.
A population has a mean of 200 and a standard deviation of 50. Suppose a random sample of 100 people is selected from this population. What is the probability that the sample mean will be within /- 5 of the population mean
Complete Question
A population has a mean of 200 and a standard deviation of 50. Suppose a random sample of 100 people is selected from this population. What is the probability that the sample mean will be within [tex]\pm 5[/tex] of the population mean
Answer:
The value is [tex]P(195 < X < 205 ) = 0.6827 [/tex]
Step-by-step explanation:
From the question we are told that
The mean is [tex]\mu = 200[/tex]
The population standard deviation is [tex]\sigma = 50[/tex]
The sample size is [tex]n = 100[/tex]
Generally the standard error of sample mean is mathematically represented as
[tex]s = \frac{ \sigma }{\sqrt{n} }[/tex]
=> [tex]s = \frac{50 }{\sqrt{100} }[/tex]
=> [tex]s =5[/tex]
Generally the limits of [tex]\pm 5[/tex] within the population mean is mathematically represented as
[tex]a = \mu - 5[/tex]
=> [tex]a = 200 - 5[/tex]
=> [tex]a = 195[/tex]
and
[tex]b = \mu + 5[/tex]
=>[tex]b = 200 + 5[/tex]
=>[tex]b = 205[/tex]
Generally the probability that the sample mean will be within [tex]\pm 5[/tex] of the population mean is mathematically represented as
[tex]P(a < X < b ) = P(\frac{a - \mu }{s} < \frac{X - \mu }{s} < \frac{b - \mu }{s} )[/tex]
=> [tex]P(195 < X < 205 ) = P(\frac{ 195- 200 }{5} < \frac{X - \mu }{s} < \frac{205 - 200 }{5} )[/tex]
[tex]\frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )[/tex]
=> [tex]P(195 < X < 205 ) = P(-1< Z<1 )[/tex]
=> [tex]P(195 < X < 205 ) = P(Z < 1) - P(Z<-1 )[/tex]
Generally from the z -table the probability of (Z < 1) and (Z<-1 ) is
[tex]P(Z < 1)= 0.84134[/tex]
and
[tex] P(Z<-1 ) = 0.15866 [/tex]
So
[tex]P(195 < X < 205 ) = 0.84134 - 0.15866 [/tex]
[tex]P(195 < X < 205 ) = 0.6827 [/tex]
