Are there any other numbers to this question? I will be glad to help.
There is an ice cream cake in the freezer. On Monday, the family eats 1/2 of
the cake. On Wednesday, they eat 1/4 of the cake. How much did the family
eat altogether?
Answer: 2/4
Step-by-step explanation: Easy 2 + 2 = 4
A researcher reports that 80% of high school seniors would pass a driving test, but only 45% of high school freshmen would pass the same driving test. Assume that the researcher’s claim is true. Suppose a driving test is given to a random sample of 90 high school seniors and a separate random sample of 85 high school freshmen. Let and be the sample proportions of seniors and freshmen, respectively, who pass the test. What are the shape and mean of the sampling distribution of ? skewed left with mean –0.35 skewed right with mean 0.625 exactly Normal with mean 0.35 approximately Normal with mean 0.35 approximately Normal with mean 0.625
Answer:
approximately Normal with mean 0.35
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]
A researcher reports that 80% of high school seniors would pass a driving test, but only 45% of high school freshmen would pass the same driving test.
This means that [tex]p_1 = 0.8, p_2 = 0.45[/tex]
Subtraction of Variable 1 by Variable 2:
By the Central Limit Theorem, the shape will be approximately normal.
The mean is the subtraction of the means of each proportion. So
[tex]p = p_1 - p_2 = 0.8 - 0.45 = 0.35[/tex]
So the correct answer is given by:
approximately Normal with mean 0.35
hi please help!!! i’ll give you a brainless answer (question in picture)
Answer:
Oh easy here is the answer m=21
Help now ____________[_
Point P is (1,2)
Point Q is (7,6)
Which of the following best represents the length of segment PQ?
11 times the sum of 8 and 14, divided by 5
Answer:
See below, please!
Step-by-step explanation:
[tex]\frac{11(8+14)}{5}[/tex]. Use PEMDAS. Sum of 8 and 14 is 22, multiply that by 11, and then divide by 5. Your answer is 48.4.
Hope this helped!
needdddd help pls ill mark brainlist
Step-by-step explanation:
correct answer 2) y> 3x+2
The expression 52,260 + 2Sh represents the annual salary for a graphic artist. This includes the base salary and $25 per hour for work on special projects, where h = number of hours. If the artist spends 160 hours on special projects throughout the year, how much in total will the artist earn? $55,260 548, 260 $8,365,000 $56, 260
Answer:
56,260
Step-by-step explanation:
plug in h = 160 into the equation:
52,260 + 25h --> 52,260 + 25 * 160 = 52,260 + 4000 = 56,260.
The artist will earn in total $56, 260.
What is an expression?An expression is a number, or a variable, or a combination of numbers and variables and operation symbols.
The given expression that represents the annual salary for a graphic artist is,
52,260 + 25h
where, h = number of hours
Now If the artist spends 160 hours on special projects throughout the year, put h = 160 in the given expression,
52,260 + 25h = 52,260 + 25*160
or, 52,260 + 25h = 52,260 + 4000
or, 52,260 + 25h = 56,260
which is the required amount an artist will earn in an year.
Thus, the artist will earn in total $56, 260.
The correct expression in the question is,
52,260 + 25h
To learn more about expression:
https://brainly.com/question/15759125
#SPJ2
The length of a classroom is 43 feet. What is this measurement in yards and feet?
Answer: 43 ft = 14.333333 yd/and/or/43 ft = 14 yd 1 ft
Step-by-step explanation:
To convert a foot measurement to a yard measurement, divide the length by the conversion ratio.Since one yard is equal to 3 feet, you can use this simple formula to convert:
yards = feet ÷ 3
The length in yards is equal to the feet divided by 3.
Answer:14.3333 yards equals 43 feet 1 foot is equivalent to .333 yards
Step-by-step explanation:
find the value of x
thanks!
Answer:
x=90
Step-by-step explanation:
a triangle that is made inside of a triangle makes a right angle. The angle that is opposite of the hypotenuse is the one that is a right angle
Triangle Inequalities help please
Answer:
No, you can't
Step-by-step explanation:
Given
[tex]Side\ 1 =4[/tex]
[tex]Side\ 2 =9[/tex]
Required
Is a perimeter of 26 possible?
First, calculate the possible side 3
[tex]Side\ 3 = Perimeter - Side\ 1 - Side\ 2[/tex]
[tex]Side\ 3 = 26 - 4 - 9[/tex]
[tex]Side\ 3 = 13[/tex]
Triangle inequalities states that:
Sum of two sides > the third side
So:
[tex]4 + 9 > 13[/tex] --- False
[tex]13 + 9 > 4[/tex] --- True
[tex]4 + 13>9[/tex] ---- True
Since one of the inequalities is false, then a perimeter of 16 is not possible
What is the correct answer?
Answer:
The point moves 3 units down and 3 units to the right
Step-by-step explanation:
need help on geometry question
Step-by-step explanation:
sin 65=p/h
0.906=4/x
0.906x=4
x=4/0.906
x=4.41
hope it helps.
Answer:
x=9.46
Step-by-step explanation:
a = b·sin(A)/sin(B) = 9.46481
Which expression is equivalent to LaTeX: \left(7x^3\right)^2\left(x^8\right)^{^{\frac{1}{2}}}\:( 7 x 3 ) 2 ( x 8 ) 1 2?
what is the slope of the line? (khan academy) please help
Answer: m=-3/2
Step-by-step explanation: Rise/Run
Rise is 3
Run is -2
So it would be -3/2
Answer:
-3/2
Step-by-step explanation:
from khan
The prism below is made of cubes which measure of a centimeter on one side. What is the volume?
Please answer this question and I will give you brainliest and 15 points
Answer:
45/8 cubic cm
Step-by-step explanation:
The volume of a prism can be determined using the formula below.
Volume = length × width × height
Since each cube measures of a centimeter on one side, then the dimensions of the prism are shown below.
Length = 5 x 1/2 cm
Width = 3 x 1/2 cm
Height = 3 x 1/2 cm
Answer:
5/3
Step-by-step explanation:
x2y when x = - 3/4 and y = 8/15
Answer:
-4/5
Step-by-step explanation:
x2y
(-3/4)(2)(8/15)
(-3/2)(8/15)
-4/5
PLEASE HURRY! I WILL MARK BRAINLIEST!
The total profit function, P(x), for a company producing x thousand units is given by P(x)=−2x²+38x−120. Find the values of x for which the company makes a profit. [Hint: The company makes a profit when P(x)>0.] Explain and justify your answer.
Answer:
4 < x < 15.
Step-by-step explanation:
Solve -2x^2 + 38x -120 = 0 This gives x = 4 and x = 15. So the company makes a profit when the range of x is greater than 4 and less than 15. The graph of function is a flipped U which pass through x axis at 4 and x = 15. Above the x-axis is the area of profit.
Carlos, Julio and Ricky were born in consecutive years Carlos was the oldest of the three and Ricky was the youngest. In 1990, after their birthday, the sum of their ages was 129. In what years were they born?
Answer:
Carlos born in 1944
Julio born in 1945
Ricky born in 1946
Step-by-step explanation:
x = Carlos age
x+1 = Julio age
x+2 = Ricky age
x + x+1 + x+2 = 129
3x + 3 = 129
3x = 126
x = 42 (Carlos age)
x+1 = 43 (Julio age)
x+2 = 44 (Ricky age)
1990 - 42 = 1944 (year Carlos born)
1990 - 43 = 1945 (year Julio born)
1990 - 44 = 1946 (year Ricky born)
Can you help me image is here which 2 Should I drag
Answer:
3 = 9
4 = 10
Step-by-step explanation:
Answer:
3,9
4,10
Step-by-step explanation:
Hey There
The equation is saying that f goes up by 1 when y s goes up by 1
so when s = 3 f = 9
when s = 4 f = 10
Enter an
algebraic expression that represents the sum of fifty-seven and x cubed.
The answer is x³+57 or (x³+57)
The train station clock runs too fast and gains 11 minutes every 10 days.
How many minutes and seconds will it have gained at the end of 8 days?
I need help fast! The measures of the angles of a triangle are shown in the figure below. Solve for x.
David can type a 50-page paper in 8 hours. Last month, David and Andy together typed a
50-page paper in 6 hours. How long would Andy take to type a 50-page paper by himself?
Answer:
12.5pages
Step-by-step explanation:
50pages ×6hours=300 and then we divide by 8 to get 37.5(the number of pages printed by david in 6 hours)
subtract 37.5 from 50 to find the number of pages printed by andy
What is a unique fraction whose decimal form repeats? ( give a fraction that decimal repeats)
round the repeating decimal to the ten thousandths place
Answer:
1/9 0.1111
Step-by-step explanation:
1/9 = 0.11111111111....
Jessica has just purchased a new purse in the shape of a rectangular box to match her favorite shoes. The purse has a length of 15 cm, a width of 6.4 cm, and a height of 8 cm. What is the volume of the purse?
Rationalize the denominator 18/3root2+1
Answer:
[tex]\dfrac{18(3\sqrt2-1)}{17}[/tex]
Step-by-step explanation:
The given expression is :
[tex]x=\dfrac{18}{3\sqrt2+1}[/tex]
We need to rationalize the denominator.
Multiplying and dividing both sides by [tex]3\sqrt2+1[/tex] as follows :
[tex]x=\dfrac{18}{3\sqrt2+1}\times \dfrac{3\sqrt2-1}{3\sqrt2-1}\\\\=\dfrac{18(3\sqrt2-1)}{(3\sqrt2)^2-1}\\\\=\dfrac{18(3\sqrt2-1)}{(18-1}\\\\=\dfrac{18(3\sqrt2-1)}{17}[/tex]
So, the answer is [tex]\dfrac{18(3\sqrt2-1)}{17}[/tex].
Answer for x.
1. 3x - 10 = -21
2. -22 - 4x = 12
Answer:
3x - 10 = -21
add 10 on both side
3x-10+10=-21+10
3x=-11
divide both side by 3
3x/3=-11/3
x=-11/3
Step-by-step explanation:
2. -22 - 4x = 12
add 22 on both side
-22+22-4x=12+22
-4x=36
divide both side by -4
-4x/-4=36/-4
c=-9 is your answer
I will give brainliest to the first one that does it correctly
Answer:
180-138
=42, is the answer
Using the same triangle as above, provide a value for the measure of angle A. Use this value, along with the values you have provided in question 3, to calculate the length of side c and the measure of angle B. The value of A should be between 20 and 70 and cannot be the same as angle C.
Answer:
Step-by-step explanation:
Since the triangle is a right triangle, we know angle B is 90
Then, we know A and C have to make 90 to
so if A has to be between 20 and 70, we can pick 21
as long as A and C make 90, if A is 21, then C is 69
since 21 + 69 = 90
Since it's a right triangle, we can use pythagoran theorem to find c
a² + b² = c²
c = [tex]\sqrt{a^{2} + b^{2} }[/tex]
then you put in the numbers from question 3 (you didn't say what numbers those have to be) and you can find out whats c
