Answers
Answer:
is it not the plus sign? (+)
Step-by-step explanation:
Related Questions
A teacher administers a standardized math test to his class of 75 students. The mean score (out of 300 possible points) is 235. From previous studies, you know the population standard deviation is 28. Using the sample data given, calculate a 95% confidence interval for the population mean.
Answers
Answer:
(228.663 ; 241.337)
Step-by-step explanation:
Given that:
Mean (m) = 235
Standard deviation (s) = 28
α = 95%
Zcritical at 95% = 1.96
Sample size (n) = 75
The confidence interval of the population mean can be obtained using the relation :
Mean ± Error
Error = Zcritical * (s/sqrt(n))
Error = 1.96 * (28/sqrt(75))
Error = 1.96 * 3.2331615
Error = 6.33699654
Error = 6.337
Lower boundary = 235 - 6.337 = 228.663
Upper boundary = 235 + 6.337 = 241.337
(228.663 ; 241.337)
17 divided by 1/3 pls help me
Answers
Answer:
51
Step-by-step explanation:
just the denominator with the numerator
Does anyone know the answer?
Answers
b. True
c. False
d. True
e. True
f. True
g. False
h. False
i. False
j. False
k. (I can’t see the whole picture)
l. ( same with this one)
Horatio bought a new bicycle on layaway. He made a $45 initial payment to the
bike shop, and then agreed to pay $10 each week until the bike was paid for. Which
equation represents the relationship between x, the number of weekly payments,
and y, the total amount paid to the bike shop?
Answers
Answer:
100
Step-by-step explanation:
The sum of two numbers is negative thirty-two. One number is two less than the other.
Call the numbers m and n.
Answers
Answer:
-15 and -17
Step-by-step explanation:
9 by the power of 2 x 2-4 by the power of 2
I AM IN THE NEED OF HELP ASAP THIS QUESTION IVE BEEN STUCK ON THIS ONE FOR HOURS!!!!
Answers
Answer:
1
Step-by-step explanation:
PART 2
HELPPPPPPPPPPPPPPPPPPPPPPPPPP
Answers
Answer:
54 hours
Step-by-step explanation:
So, first of all subtract the money she has from the total amount.
540-60=480 She still needs $480. So divide this number by the amount she gets in an hour. (9)
480/9 =53.33333 since she can't work half hours, i rounded up.
please help meeee the blue line is what I have to find please show your work
Answers
Answer:
So we have to satisfy the equation so let us simplifyLet the empty space be n N-16+4n+9+1= 10n-6 N-4n=10nn=14n So the missing value is 14N to statify the equationSo now the equation is n-16+4n+10=10n-6
Collect like terms
5n-6= 10n-6
Move 6 to the other side as a positive
5n=10n
Move 10n to the other side as a negative
5n-10n=0
-5n=0
Divide both sides by -5
So, n is equal to 0
help me pleaseeeeee
Answers
Answer:
the 4th one, 5 7/9
Step-by-step explanation:
Answer:
–5 7/9
Step-by-step explanation:
Follow my account ^^
Please help with all three
Answers
Answer:
1)1/3 x3=9
2)The didvsion equation is the smae because you would get the same answer.
3) it would be 9
Step-by-step explanation:
What is the probability of picking a purple marble and spinning green?
Answers
Write equations in slope-intercept form for three different lines that intersect at (-2,3).
Answers
Answer:
y = 3/2x + 6
y = -1/4x + 5/2
y = -x + 1
Step-by-step explanation:
I used the point (-2, 3) with a variety of slopes (3/2, -1/4, -1) and plugged the point and slope into y=mx+b to get 'b' (the y-intercept).
PLEASE HELP EASY MATH PLEASE ASAP
What is the Ax + By =C form (where A > 0, and A, B, and C are integers with
factors) of the equation of the line that passes through (-4,9) with a slope of -3/2
Answers
Answer:
Step-by-step explanation:
I don't really know what your question is asking for but I can tell you there's a quadratic formula that solves for x-ints. There's a quadratic equation which is Ax + bx + c = 0.
The shortest route from London to York is 200 miles.
A lorry is expected to take 4 hours to travel this route.
The lorry actually travels by a different route which increases the distance by 20%, but it still arrives in 4 hours.
By how many more mph than the expected speed does the lorry travel?
Answers
Answer: The lorry is traveling 10 mph over the expected speed.
Step-by-step explanation:
If 200 miles takes 4 hours, the speed is 200mi/4hr which is 50 mph.
If the distance is increased by 20%, the distance is 240 miles.
240mi/4hr = 60mph
The difference is 10mph
Complete the number sentence.
0.30 ÷ 0.06
Answers
Answer:
5
Step-by-step explanation:
Answer:
0.30 ÷ 0.06 = 5
Step-by-step explanation:
which ordered pair is the solution set of -6x+2y>6
Answers
Answer:
C-(-3,4)
Step-by-step explanation:
Mr. kim travels 32 weeks a year for work. He is home the other 20 weeks. There are 7 days in a week. Which of the following basic facts can Mr. Kim use to help find the number of days he is home.
A. 2x7
B. 3x7
C. 32+7
D. 20+7
Answers
Answer:20 * 7 (20 times/ multiplied by 7)
Step-by-step explanation: home is 20weeks with 7 days each. So, 20 times 7
In other words
Count seven days 20 times
Please help answer the first 2 boxes for brainslt
> for brainslt
Answers
y=mx+b
From a Graph:
m=3/2 b=3
Equation: y=3/2x+3
Non-Proportional
Negative Slope
2nd From a Graph:
m=5/2 b=4
Equation: y=5/2x+4
Non-Proportional
Negative Slope
Help anyone I’ll appreciate it thank you
Answers
Answer:
150
Step-by-step explanation:
the total angle of a flat line is 180
since one side is 30 180-30 is 150
What is the perimeter of the parallelogram?
units
Answers
Answer:
P = 36 units
Step-by-step explanation:
perimeter of the given diagram: (see attached)
P = 8 + 8 + 10 + 10
P = 36 units
Forced vital capacity (FVC), a standard measure of pulmonary function, is the volume of air a person can expel in 6 second. The standardized FVC follows approximately a standard normal distribution. A child is considered to have a normal long growth if his or her standardized FVC is within 1.5 standard deviation of the mean. The probability that a child is within the normal range of long growth is ______________.
Answers
Answer: the probability that a child is within the normal range of long growth is 0.8664
Step-by-step explanation:
Given that;
A child is considered to have a normal long growth if his or her standardized FVC is within 1.5 standard deviation of the mean.
he probability that a child is within the normal range of long growth = ?
so we need to find
P( -1.5 < z < 1.5)
which can also be represented as;
⇒2 × ( 0 < z < 1.5)
so we have
⇒ 2 × 0.4332
= 0.8664
Therefore the probability that a child is within the normal range of long growth is 0.8664
Helppppppppppp plzzz
Answers
Answer:
4
Step-by-step explanation:
hope this helps......
anyone up that can help me
Answers
Answer:
Step-by-step explanation:
reflection
Find the value of x
Answers
Answer:
x=39 degrees
Step-by-step explanation:
x + 31 equals 2x - 8 because both pair of expressions must add up to 180
Which shows two possible values for a number represented by the point?
A number line going from 0 to 1. There are 4 equal spaces between 0 and 1. A point is half-way between 0 and 1.
StartFraction 2 Over 4 EndFraction and One-third
StartFraction 2 Over 4 EndFraction and One-half
2 and StartFraction 2 Over 4 EndFraction
2 and One-half pls help im timed
Answers
Answer:
B-2/4 and 1/2
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
In tuv y is centroid if yw=5b and ty=4b+14 find tw
Answers
your right Step-by-step explanation:
The measure of TW from the given triangle TUV is 35 units.
What is centroid of a triangle?The point in which the three medians of the triangle intersect is known as the centroid of a triangle. It is also defined as the point of intersection of all the three medians.
Given that, in triangle TUV, Y is centroid if YW=5b and TY=4b+14.
The centroid is positioned inside a triangle. At the point of intersection (centroid), each median in a triangle is divided in the ratio of 2:1.
Now, TY/YW =2/1
(4b+14)/5b =2/1
10b=4b+14
6b=14
b=14/6
b=7/3
Now, TW=YW+TY
TW=5b+4b+14
TW=9b+14
Substitute, b=7/3 in TW=9b+14, we get
TW=9×7/3+14
= 21+14
= 35
Therefore, the measure of TW is 35 units.
Learn more about the centroid here:
brainly.com/question/10708357.
#SPJ2
The length of the base of an isosceles triangle is x. The length of a leg is 3x - 4. The perimeter of the triangle is 76. Find x.
X=
Answers
Answer:
12
Step-by-step explanation:
Hi!
We're given that the perimeter is 76. A triangle's perimeter is given by the sum of all of the sides. So, we'll find the lengths of the sides of the triangle and add them.
This is an isosceles triangle. The legs of an isosceles triangle are equal. In this problem, we're given the length of one leg: 3x-4. That means that the length of the other leg is also 3x-4. Now, the last side of the triangle is x ("base is x).
2(3x-4) + x = 76
6x-8+x=76
7x-8=76
7x=84
x=12
Let's check our answer.
3(12) - 4 =36-4 = 32
32 times 2 = 64 +12 =76
Correct!
predict whether the product is greater than, less than, or equal to 7/10. What is the product? 10/10 x 7/ 10
Answers
Answer:
7/10 *10/10 is 70/100 or 7/10 so equal
Step-by-step explanation:
the product is 7/10.
it is 10/10which simplifies to 1(divide by 10)
so it wouldn't change
Hope this helsp zpl hit hte crown :D
Suppose that a population parameter is 0.3 and many samples are taken from the population. If the size of each sample is 40, what is the standard error of the distribution of sample proportions?
A. 0.095
B. 0.055
C. 0.072
D. 0.032
Answers
Answer:
0.072
Step-by-step explanation:
A P E X
Here are the monthly charges for Jo's mobile phone
Monthly charge 616
150 free minutes, then 18p per minute
150 free texte, then 18p per text
During one month, Jo makes 170 minutes of calls and sends 182 texte,
Work out the total charge for the month
Answers
Answer:
The correct answer is - 625.36.
Step-by-step explanation:
Given:
Fixed mothly plan - 616
free minutes - 150
Used minutes - 170
Free text - 150
Used text - 182
Charging amount over free limit - 18p
Solution:
Number of minutes over the limit - 170 - 150 = 20
Number of text over the limit - 182 - 150 = 32
So the extra amount that will be add to the monthly charge would be -
(20*0.18) +(32*0.18)
and the total charge of the month would be -
= 616+(20*0.18) +(32*0.18)
= 616+3.60+5.76
= 625.36
Thus, the correct answer would be - 625.36