Answer:1.00
Step-by-step explanation:
A=74-72/2.0
And I did it on kahn
The z - score for the Stephanie’s exam grade will be 1.
What is Standard deviation?
Standard deviation is the measure of dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.
Given that;
The grades on a physics midterm at Covington are roughly symmetric with μ = 72 and σ = 2.0.
And, Stephanie scored 74 on the exam.
Now,
The formula for the z - score = ( X - μ ) / σ
Substitute all the values, we get;
The z - score for the Stephanie’s exam grade = ( 74 - 72 ) / 2.0
= 2 / 2
= 1
Thus, The z - score for the Stephanie’s exam grade will be 1.
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not sure about this one help please
Answer:
a) -1
Step-by-step explanation:
Slope is also known as the gradient
1. assign a value to x and solve for y:
when x = 2, y = 2
when x = 4, y = 0
2. Next, use the equation of a straight line to find the gradient
y = mx + c
y is the y-coordinate, m is the gradient, x is the x-coordinate, c is the point where the line crosses the y-axis, which is found by equating y to 0 and solving for x
so y = mx + c becomes 2 = m*2 + 4, which then becomes 2 = 2m + 4
2m = -2 (take 4 away from 2)
m = -1
What is the answer to this?
Answer:
The value of x = -22
Step-by-step explanation:
Given the expression
[tex]-0.57x+0.27x=6.6[/tex]
Add similar elements: [tex]-0.57x+0.27x=-0.3x[/tex]
[tex]-0.3x=6.6[/tex]
Multiply both sides by 10
[tex]-0.3x\cdot \:10=6.6\cdot \:10[/tex]
Refine
[tex]-3x=66[/tex]
Divide both sides by -3
[tex]\frac{-3x}{-3}=\frac{66}{-3}[/tex]
[tex]x=-22[/tex]
Therefore, the value of x = -22
Which set of numbers includes only integers?
A Venn diagram. A large box is labeled rational numbers. A box inside the rational numbers box is labeled integers. A box inside the integers box is labeled whole numbers.
Negative 5, negative 3 and one-fourth, 1, one-eighth
Negative 3, negative 2, 2, 3
Negative 6, negative 4, negative 2, negative one-half
One-half, two-thirds, StartFraction 6 Over 7 EndFraction, 0
Answer:
negative 6, negative 4, negative 2, negative one half
Answer:
C
Step-by-step explanation:
round the hundredth:0.678
Answer:
0.68
Step-by-step explanation:
7 is in the hundredth place and since 8 is after and it's bigger than 5, the 7 becomes 8 so 0.68
Hope this Helps!
The grocery store has 20% off from the original price on cereal. The equation for finding the sale price would be y = x - (.20x). What is the sale price if the cereal cost $3.00?
$2.20
$2.50
$2.40
$2.30
Step-by-step explanation:
y = x - 0.2x
y = 0.8x
When x = $3.00, y = (0.8)($3.00) = $2.40.
The sale price is $2.40.
Answer:
$2.40
Step-by-step explanation:
y = x - 20% of x
where x is $3.00
20% would be 1/5 of 3.00 = 3/5
3 - 3/5 = 15-3/5 = 12/5 = $2.40
POINTS!!!!!! HELP!!!!!!!
Use quadratic regression to find the
equation for the parabola going
through these 3 points.
(2, 19) (6, 99) (-1, 1)
y=[?]^2+[?]x+[?]
Answer:
The standard form of the parabola is
y = 2 x² + 4 x + 3
Step-by-step explanation:
Step(i):-
The standard form of the parabola
y = a x² + b x + c ...(i)
The equation for the parabola is passing through the point (2 , 19 )
19 = 4a + 2b +c ...(ii)
The equation for the parabola is passing through the point (6 , 99 )
99 = 36a + 6b +c ...(iii)
The equation for the parabola is passing through the point (-1,1) )
1 = a - b + c ...(iv)
step(ii):-
subtracting (ii) and (iii) , we get
8a + b = 20 ...(a)
Subtracting (iii) and (iv) , we get
5a + b = 14 ...(b)
solving (a) and (b) , we get
subtracting (a) and (b) , we get
8a + b-( 5a + b ) = 20 - 14
3 a = 6
a = 2
substitute a=2 in equation (a) , we get
8a + b = 20
8(2) + b = 20
b =20 -16
b = 4
Substitute a= 2 ,b = 4 in equation (ii) , we get
19 = 4a + 2b +c
19 = 8 + 8 + C
c = 19 -16 = 3
Final answer:-
The standard form of the parabola is
y = 2 x² + 4 x + 3
X/10*0.24-15.5/7.5=9
Given :
[tex](\dfrac{X}{10}\times 0.24 )- \dfrac{15.5}{7.5} = 9\\\\[/tex]
To Find :
The value of x.
Solution :
[tex](\dfrac{X}{10}\times 0.24 )- \dfrac{15.5}{7.5} = 9\\\\(\dfrac{X}{10}\times 0.24 ) = 9 + \dfrac{15.5}{7.5}\\\\(\dfrac{X}{10}\times 0.24 ) = \dfrac{(9\times 7.5 )+ 15.5}{7.5}\\\\(\dfrac{X}{10}\times 0.24 ) = \dfrac{83}{7.5}\\\\X = \dfrac{83\times 10}{7.5\times 0.24}\\\\X = 461.11[/tex]
Therefore, the value of X is 461.11 .
PLS HELP FINAL QUESTION! 50 POINTS AND BRAINLIEST!
[tex]ln (x-24) + ln(x+100) = 3ln5[/tex]
Answer:
lnx-24ln+lnx+100ln=3ln5
2lnx+76ln=2ln5
Step-by-step explanation:
9i / -2 +7i what is the conjugate of the denominator
A hospital wants to survey religious participants in their city about what they seek from a hospital chaplain, so
they randomly select 5 religious meetings in the city and survey every participant in those meetings.
What type of sample is this?
Using sampling concepts, it is found that this is an example of cluster sampling.
Samples may be classified as:
Convenient: Drawn from a conveniently available pool. Random: All the options into a hat and drawn some of them. Systematic: Every kth element is taken. Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed. Stratified: Also divides the population into groups. However, only some elements of each group are surveyed.In this problem, each religious meeting is a group, and all participants are surveyed, hence, we have an example of cluster sampling.
A similar problem is given at https://brainly.com/question/25122507
please help asap no trolls!
Answer:
Angle S
Step-by-step explanation:
The angle is always proportional to the opposite side. Angle opposite to the longest side has the largest angle so since Side RT is the shortest side, the angle opposite to it (or whatever the correct term is) would be Angle S.
In a fruit punch drink, the 3 ingredients are apple juice, orange juice and cranberry juice. If 1/4 of the drink is apple juice and 3/10 is orange juice then write the ratio of cranberry juice to apple juice to orange juice in its simplest form.
Answer:
5 : 6 : 9Step-by-step explanation:
The drink has 3 ingredients
Apple juice = 1/4 = 25%Orange juice = 3/10 = 30%Cranberry juice = the rest = 100% - (25% + 30%) = 45%The ratio is:
25 : 30 : 45Simplified ratio:
5 : 6 : 93.0450 x 10^4 as an ordinary number
Answer:
30450 is the answer.
Step-by-step explanation:
Given number is [tex]3.0450 \times 10^4[/tex].
We need to write it as an ordinate number.
It is 3.0450 times 10 to the power 4.
It would mean that,
[tex]3.0450 \times 10^4=3.0450 \times 10000\\\\=\dfrac{3.0450 }{10000}\times 10000\\\\=30450[/tex]
Hence, the required answer is 30450.
Will mark the brainliest
Answer:
B. [tex] 60x^8 [/tex]
Step-by-step explanation:
[tex] 4x^2\sqrt{5x^4} \cdot 3\sqrt{5x^8} = [/tex]
[tex] = 4x^2 \times 3 \sqrt{5x^4 \times 5x^8} [/tex]
[tex] = 12x^2 \sqrt{25x^{4+8}} [/tex]
[tex] = 12x^2 \sqrt{25} \sqrt{x^{12}} [/tex]
[tex] = 12x^2 \times 5 \times x^6 [/tex]
[tex] = 60x^8 [/tex]
Which statement best describes the function below?
f(x)= x3 - X2-9x+9
O A. It is not a function.
OB. It fails the vertical line test.
O C. It is a one-to-one function.
O D. It is a many-to-one function.
pls help!!
Answer:
D. It is a many-to-one functionStep-by-step explanation:
One-to-one if every y value has exactly one x value mapped onto itMany-to-one if there are y values that have more than one x value mapped onto them.We have a function that is of degree 3, so it has 3 x-intercepts which means there are points (x₁, 0), (x₂, 0), (x₃, 0), so it is a many-to-one function
Correct option is D
In the diagram below, the lifeguard is 5 ft. tall while sitting and the angle of elevation from the man on the diving board to the lifeguard (angle 2) is 20. How far apart are the two men? Round your answer to the nearest tenth.
Answer:
d the same thing as the one that I was a great place for him to get to know the person you want and what is the answer to the
(-8/5)(2/3)(-4) as a fraction.
Answer:
9
1600
Step-by-step explanation:
i know
Which fraction is NOT equivalent to the point shown on the number line?
Answer:
10/12
Step-by-step explanation:
10/12 is not a multiple or a factor of 3/5
f(x) = 2. What is g(x)?
А. g(x) = х2 +4
В. g(x) = -4х2
ОООО
Ос. g(x) = х2 - 4
D. g(x) =-x2 - 4
Answer:
D an upside down smiley means the slope is negative. which means either b or d. then sub x = 0, if y is -4 from the graph you get the answer
Explain how the applications of inventory management for fixed quantities differ from those for fixed time periods. Give specific instances in which you would use a fixed time period model rather than a fixed quantity model. Provide real-world examples.
Answer:
The main difference between the fixed quantity and fixed time period is that the fixed quantity makes it mandatory for a fixed number of items to be ordered every time an order is made, while the fixed time period has a fixed period orders are received before the next order period.
Step-by-step explanation:
The fixed quantity model is adopted by producers of a product to maintain a package type and also to maximize the profit derived from sales. For example is when ordering or buying eggs from a store, the buyer cannot purchase five eggs since it is packaged in a dozen (12), and so must buy the whole package.
The fixed time model uses time intervals to receive and accumulate orders before delivery is made for every order interval.
The Rodriguez Family is starting to save 15% of their income per month for college savings for their children. They earn $8,540 per month. How much will the Rodriguez family save each month for future college expenses?
Answer:
1,281
Step-by-step explanation:
Find the distance between the two points in simplest radical form.
(-9,8) and (-3, -1)
Answer:
The distance between (-9, 8) and (-3, -1) will be:
[tex]\:d=3\sqrt{13}[/tex] units
Step-by-step explanation:
Given the points
(-9, 8)(-3, -1)Finding the distance between (-9, 8) and (-3, -1)
[tex]d\:=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}[/tex]
[tex]=\sqrt{\left(-3-\left(-9\right)\right)^2+\left(-1-8\right)^2}[/tex]
[tex]=\sqrt{\left(-3+9\right)^2+\left(-1-8\right)^2}[/tex]
[tex]=\sqrt{36+81}[/tex]
[tex]=\sqrt{117}[/tex]
[tex]=3\sqrt{13}[/tex] units
Therefore, the distance between (-9, 8) and (-3, -1) will be:
[tex]\:d=3\sqrt{13}[/tex] units
Help Me With This Plz?
Answer: #1 Answer is D
Step-by-step explanation: Welcome!
Can I get Brainliest?
Read each of the situations below. Write an integer that describes the situation a football player caught a 57-yard pass
Answer:
an integer that describes the situation a football player caught a 57-yard pass.
Step-by-step explanation:
WHAT? YOU TOLD ME TO WRITE THAT NOT ME!!!! T-T next time be more specific YEESH
What is the constant proportionality, y/x?
Answer:
1.4 in x.y but in y.x it 4.1
Step-by-step explanation:
so if Sarah has 10 apples and shes gives 2 to Jack, and Noah gives Sarah 8 more. How many apples does Sarah have now?
Answer:
She would have 16
Step-by-step explanation:
10-2=8
8+8=16
a teacher guessed 30 students would ask for help. However, there were actually 35 students who came to get help. What was her percent of error? Round to the nearest whole percent.
Answer:13%
Step-by-step explanation:
Lets call the Teacher Mrs.Lukens and we put the number into a calculator and subtract 35-13% you have it but as it was a guess you will never know.
There are two question please help.
7- 7x + 8 (x + 1/4 *fraction*) = 3(6x -9) - 8
8- -4x - 2(8x + 1)= -(-2x -10)
There is NO choices...Please help!!!
Choose the polynomial that is described. A trinomial in one variable of degree 3.a. 4r2-9t+7b. 3r2+4t-9 c. 4r3 d. 4r3 -9t +7
Answer:
C. 4r³
Step-by-step explanation
A trinomial is an expression having three terms. A polynomial with degree 3 that which its leading variable has a power of 3. For example an example of such polynomial in one variable is expressed as 2x³+4x²-7. This equation has 3 terms and the leading variable has a power of 3 with only x as the variable
From the given options based on the explanation, the correct answer will be 4r³. This can also be written as a trinomial as 4r³+0r²+0r
The rest contains more than one variable.
There is no trinomial.
A trinomial is a polynomial with three nonzero terms
Here we have to find trinomial in one variable of degree 3 .
Since in given four options a , b , d have equations in two variables and c have only one term so there is no trinomial.
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PLEASE ANSWER ALL QUESTIONS WILL GIVE BRAINLY!!!!!
SHOW YOUR WORK PLS
1.
2 ^ 4 = 16
16 × 6 = 96
96 + 7 = 103
2.
3 + 4 = 7
8 × 7 = 56
12 ^ 2 = 144
56 + 144 = 200
3.
14 - 6 = 8
8 ^ 2 = 64
64 × 6 = 384
4.
150 ÷ 5 = 30
30 × 6 = 180
180 + 8 = 188
hope this helps :))