5/8 ÷ 1/4 help I will give brainalest
Answer:
your answer is 2.5 or 2 1/2
Answer:
Result in decimals: 2.5
Result in fractions 2 1/2
Step-by-step explanation:
A researcher claims that the variation in the salaries of elementary school teachers is greater than the variation in the salaries of secondary school teachers (the claim). A random sample of 30 elementary school teachers has a variance of $ 8324, and a random sample of 30 secondary school teachers has a variance of $2862. At α= 0.05, can the researcher conclude that the variation in the elementary school teachers' Salaries is greater than the variation in the secondary teachers' salaries? Use the P-value method.
Assume that all variables are normally distributed.
a. State the hypotheses and identify the claim.
b. Find the critical value.
c. Compute the test value.
d. Make the decision.
e. Summarize the results.
Answer:
a
The null hypothesis is [tex]H_o : \sigma^2_1 = \sigma^2 _2[/tex]
The alternative hypothesis is [tex]H_a : \sigma_1 ^2 > \sigma^2_2[/tex]
b
[tex]F_{critical} = 1.8608[/tex]
c
[tex]F = 2.9085[/tex]
d
The decision rule is
Reject the null hypothesis
e
There is sufficient evidence to support the researchers claim
Step-by-step explanation:
From the question we are told that
The first sample size is [tex]n_1 = 30[/tex]
The sample variance for elementary school is [tex]s^2_1 = 8324[/tex]
The second sample size is [tex]n_2 = 30[/tex]
The sample variance for the secondary school is [tex]s^2_2 = 2862[/tex]
The significance level is [tex]\alpha = 0.05[/tex]
The null hypothesis is [tex]H_o : \sigma^2_1 = \sigma^2 _2[/tex]
The alternative hypothesis is [tex]H_a : \sigma_1 ^2 > \sigma^2_2[/tex]
Generally from the F statistics table the critical value of [tex]\alpha = 0.05[/tex] at first and second degree of freedom [tex]df_1 = n_1 - 1 = 30 - 1 = 29[/tex] and [tex]df_2 = n_2 - 1 = 30 - 1 = 29[/tex] is
[tex]F_{critical} = 1.8608[/tex]
Generally the test statistics is mathematically represented as
[tex]F = \frac{s_1^2 }{s_2^2}[/tex]
=> [tex]F = \frac{8324 }{2862}[/tex]
=> [tex]F = 2.9085[/tex]
Generally from the value obtained we see that [tex]F > F_{critical }[/tex] Hence
The decision rule is
Reject the null hypothesis
The conclusion is
There is sufficient evidence to support the researchers claim
A store had 50 bottles of olive oil. Each week, 40% of the olive oil bottles were sold and 20 new bottles arrived in shipments. Which recursive function best represents the number of bottles in the store, given that f(0) = 50?
Answer:
f(n) = f(n-1)*.6 + 20
Step-by-step explanation:
f(0) = 50
f(n) = f(n-1)*.6 + 20
In fact, since f(0) = 50, f(n) = 50.
For question 15-16, find the value of x that would prove y || z. State the conserve used to support your answer.
Answer:
There is not enough information, but in any case, rephrase.
ABCDE is a
regular pentagon
find the angles of ADC?
Answer:
Since this regular polygon has 5 vertices (implied from the ABCDE), it's a regular pentagon. (This means an equilateral, equiangular pentagon.) So, 360 deg./5 =72 deg., and 180 - 72 = 108).
Step-by-step explanation:
Parallel lines r and s are cut by two transversals, parallel lines t and u. Lines r and s are crossed by lines t and u to form 16 angles. Clockwise from top left, at the intersection of r and t, the angles are 1, 2, 3, 4; at the intersection of s and t, 5, 6, 7, 8; at the intersection of u and s, 9, 10, 11, 12; at the intersection of u and r, 13, 14, 15, 16. Which angles are alternate interior angles with angle 3? Angle5 and Angle13 Angle7 and Angle15 Angle6 and Angle16 Angle8 and Angle14 Mark this an
Answer:
5 and 13
Step-by-step explanation:
I got it right on edge
Answer:
5 and 13, got in right in edge 2020
Step-by-step explanation:
A triangle has interior measures of 20° and 90°. What is the measure of the third angle?
pls answer my question
Answer:
x = 23
Step-by-step explanation:
Exterior angles equals the sum of opposite interior angles.
2x+ 3 + 51 = 100
Combine like terms.
2x + 54 = 100 {Subtract 54 from both sides}
2x = 100 - 54
2x = 46 {Divide both sides by 2}
x = 46/2
x = 23
Kendra is buying a Nintendo Switch with a price tag of $300. The sales tax rate where Kendra is purchasing the
Switch is 9.5%. How much will Kendra pay altogether for the Switch?
Answer: So for the 9.5% percent I'm not sure if you mean by 9.5% off the price or more for the price so Ill just do both
If you subtract $300 from 9.5% you get 271.5 US$
But if you add $300 to 9.5% you get 328.5 US$
I NEED HELP ,PLEASEEEE!!!!!
Shonda goes to a restaurant with no more than $15 to spend. She buys a burger that costs $10.50 and one other item. Write an equation to express how much money Shonda spent at the restaurant.
Answer:
she spent $10.50 sense she didnt buy anything she has $4.50 left
Step-by-step explanation:
What is the factor of х+8x+7
Answer:
(x + 7) (x + 1)
Step-by-step explanation:
Product = 7
Sum = 8
Factors = 1 , 7
x² + 8x + 7 = x² + 7x + x + 7
= x(x + 7) + (x + 7)
= (x + 7) (x + 1)
a vase costs $2 bridget has some money if she gets $4.45 more she can buy 5 vases how much money does she have
Answer:
Bridget has $5.55.
Step-by-step explanation:
First let's find how much money Bridget needs to buy 5 vases. To do this, multiply the cost per vase by the amount of vases she wants to buy:
2 * 5 = 10
It would cost $10 to buy 5 vases.
Bridget needs $4.45 in order to buy 5 vases. So, to find how much money she already has, subtract the amount of money she needs from the total cost of the 5 vases:
10 - 4.45 = 5.55
Bridget has $5.55.
Answer:
$ 5.55
Step-by-step explanation:
Find the price of 5 vases
Cost of 5 vases = 5 * 2 = $ 10
She needs $4.45 to buy 5 vases. If we subtract this 4.45 from $10, the result will be the money she has already with her
Money Bridget has = 10 - 4.45
= $ 5.55
WHAT IS THE ANSWER PLZ I WILL MARK BRAINLIEST!!!
Answer:
There is something already at the positive 2 place and you are just subtracting 2 because of (-2)
I hope that helps :)
Step-by-step explanation:
plz mark B R A I N L I E S T
Part A and Part B for Max's car together cost $1,693 dollars, Part A cost $58 dollars
more than twice what Part B cost. How much did each part cost?
Answer:
Part A: 1148
Part B: 545
Step-by-step explanation:
Part A: 2x + 58
Part B: x
2x + 58 + x = 1693
3x + 58 = 1693
3x = 1635
x = 545
Part A: 2x + 58 = 2(545) + 58 = 1148
Part B: x = 545
11 ^ 2 power equals what
A number raised to a power is the same as multiplying the number by itself the number of times of the power.
11^2 = 11 x 11 = 121
The answer is 121
PLEASE HELP!
Find x - y less than 0.
A. - y - x
B. x - y
C. - x + y
can anyone answer number 2? Thank you
ANSWER:
2570000
Step-by-step explanation:
0.003 * 7
0.021 + 1
1.021
2,520,000 * 1.021
2572920
rounds to
2570000
192.4-(52+3) times 2
Answer:
82.4
Step-by-step explanation:
412/5,82 2/5 ︎ ︎ ︎ ︎ ︎ ︎ ︎
︎ ︎ ︎︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎
︎ ︎ ︎︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎
Answer:
274.8
Step-by-step explanation:
( 192.4 - ( 52 + 3 ) ) * 2
Simplify, remember the order of operations;
( 192.4 - ( 52 + 3 ) ) * 2
( 192.4 - ( 55 ) ) * 2
( 192.4 - 55 ) * 2
( 137.4 ) * 2
274.8
Solve the attached image
Answer: Gabby and Gianna needs to isolate the variable by dividing each side by factors that don't contain the variable. In the inequality form, the answer is x<–7 or x>–3.
Step-by-step explanation:
You are canning 40 cups of applesauce. You have 20 glass jars, each of which will hold 134 cups of applesauce. Choose the correct explanation(s) that explain why you do not have enough jars.
You do not have enough jars because 20 jars will only hold 35 cups of applesauce.
You do not have enough jars because you have enough applesauce left to completely fill 2 more jars, and almost fill a third jar.
You do not have enough jars because you need a total of 40×134=70 jars.
You do not have enough jars because the 20 jars would need to hold 2 cups each, but each holds 14-cup less than that.
Answer:
B
Step-by-step explanation:
took the test
he first five multiples for the numbers 4 and 6 are shown below.
Multiples of 4: 4, 8, 12, 16, 20, . . .
Multiples of 6: 6, 12, 18, 24, 30, . . .
What is the least common multiple of 4 and 6?
2
4
12
24
Answer:
12
Step-by-step explanation:
Answer: 12
Step-by-step explanation:
rate of change of 15
Answer:A General Note: Rate of Change
The average rate of change between two input values is the total change of the function values (output values) divided by the change in the input values.
Step-by-step explanation:
Find the amount of interest to be paid.
Principal: $780
Annual Rate of Interest: 12 1/2%
Time: 6 months
Use the formula: i = prt (principal, rate, time)
Answer:
P = 780
R = 12 1/2%
T = 6
780 x 12 1/2% x 6 = $2808.005
I need help with this please
Is the relation shown in the arrow diagram a function? Explain. *
(NEED HELP ASAP)
Answer:
It is a function.
Step-by-step explanation: Each input has only one output.
PLZ HELP ME I BEG YOU !!!!!!!!!!!!!!
An elevator started at the first floor and went up 18 floors. It then came down 11 floors and went back up 16. At what floor was it stopped?
Answer:
24th
Step-by-step explanation:
1+18=19
19-11=8
8+16=24
The problem is in the picture
HELLLPPPP PLEASSSSEEE &&& THANK UUUU
Answer:
y = -1/2x + 1
General Formulas and Concepts:
Algebra I
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define variables
Slope m = -1/2
y-intercept b = 1
Step 2: Write linear function
y = -1/2x + 1
Please help!!!!! Can show work I’m stuck !!!!!!!!!