Answer:
a) This is not a random sample
b) The generalization from this sample would not be valid
Step-by-step explanation:
No the sample is not random. If the questionnaire would had been send to any five students in a class irrespective of whether they are among the top five, then the sample could be referred as random sample.
The marks of top five students in any grade would give an average value that will be an outlier to the average of marks of all students with in a grade.
Hence, the generalization from this sample would not be valid
if 4 friends eat 4 cakes in 4 days then how many cakes will 10 friends eat in 10 days
Answer:
If four friends can eat four cakes in four days, then four friends will eat an average of one cake per day, so each friend will be able to eat 1/4 of a cake per day.
So 10 friends will eat 10/4 of cake per day, or two and a half cakes per day, so they will eat 2,5 * 10 = 25 (twenty-five) cakes per 10 days, assuming they will eat at the same rate
Step-by-step explanation:
Branily?
the sum of two times a number and -2 is at least 8
how can I solve it plz help
Laurie saw some stray cats in her backyard. She put out some water and a bowl with 3 cups of food. The cats drank all the water and ate half of the food. How many ounces of food did the cats eat?
Answer:
12
Step-by-step explanation:
1 cup = 8 ounces.
In total, there are 3 cups of food.
So, we do 3 × 8 which would equal 24.
24 ÷ 2 = 12.
12 is half of all the food Laurie gave to the stray cats
Therefore, 12 is the correct answer.
-kiniwih426
Can you have a triangle with two right angles?
Answer:
no
Step-by-step explanation:
because there are two angles
My Answer ↓
No. You cannot have a triangle with two right angles due to the concept that a triangle can only have 3 sides. Therefore, a triangle can only have 1 right angle.
Maggie is knitting sweaters for her family. Each day she makes 1/4 of a sweater. Which fraction shows the number of sweaters can knit in 8 days
The fraction which represent the number of sweaters Maggie knits in 8 days is 2/1 sweaters
How to solve fraction?Sweaters Maggie knits per day = 1/4Number of days = 8 daysTotal number of sweaters Maggie knits = Sweaters Maggie knits per day × Number of days
= 1/4 × 8
= (1 × 8) / 4
= 8/4
= 2/1 sweaters
Learn more about fraction:
https://brainly.com/question/2929160
Why do my teachers give me problems they can't help me with -_-
Answer:
a. False
b. True
c. True
d. False
Step-by-step explanation:
a. Is false because it says the equivalent ratios of centimeters and feet. When it is comparing centimeters and inches
b. Is true because the unit rate in this double number line is 2.54 centimeters per inch
c. Is true because it shows on the double number line that 6 inches is equal to 15.54 centimeters
d. Is false, although the fact that 0.039 inches are in a centimeter is true, it does not show that rate in the double number line
I hope this helps :)
Answer:
a. True
b. True
c. True
d. False
Step-by-step explanation:
a. 30.48 centimeters is equal to one foot (12 inches)
b. The unit rate means how many centimeters per inch
c. 6 inches on the number line is equal to 15.24 centimeters
d. If you divide 1 by 2.54 the answer is 0.39 not 0.039
What’s 5.2 times by 7.7
Answer:
The answer is 40.04
Step-by-step explanation:
5.2 x 7.7 = 40.04
a bowl has 3 red jellybeans,4 green jellybeans and 2 pink jellybeans. what is the probabilty of not choosing a red jelly beans
Answer:
1/2
Step-by-step explanation:
4+2 is green and pink jelly beans. 6. 3 is red. 3/6 is the probability, which is 1/2
Answer:
Step-by-step explanation:
Total Number of Jelly Beans = 3 + 4 + 2 = 9
There are two ways to do this. You could just add the pink and green jellybeans and put that over the total to get the probability of not red.
Sometimes it is better to find the probability of getting red and subtracting it from 1.
P(red) = 3/9 = 1/3
P(not red) = 1 - 1/3
P(not red) = 2/3
Jayreece ran 2 miles in
about 23 minutes. If he
continues at this pace,
how long will it take him
to run a half marathon
(13 miles)?
Answer:
149.5 minutes
Step-by-step explanation:
first you'll wanna take 23 divided by 2 which will be 11.5
next you multiply 11.5 by 13
I don't know what the answer is, please help me. ty!!!
She can grow 4 plants because 10/2.5 is equal to 4. So, the answer is 4 plants. Hope this helped.
m angle SRW = what degrees
Answer: 85 degrees
Step-by-step explanation: ∠URW are 80 and 15
please help me i put the two pictures there
Answer: 91 and 101 miles
Step-by-step explanation:
find the value of y (pls help me :C)
2y-8×9 = -3×9×5y+476
Hey there!
Let's solve your equation step-by-step.
[tex]\fbox{2y−(8)(9)=(((−3)(9))(5))(y)+476}[/tex]
Step 1: Simplify both sides of the equation.
[tex]\fbox{2y−(8)(9)=(((−3)(9))(5))(y)+476}[/tex]
[tex]\fbox{2y+−72=−135y+476}[/tex]
[tex]\fbox{2y−72=−135y+476}[/tex]
Step 2: Add 135y to both sides.
[tex]\fbox{2y−72+135y=−135y+476+135y}[/tex]
[tex]\fbox{137y−72=476}[/tex]
Step 3: Add 72 to both sides.
[tex]\fbox{137y−72+72=476+72}[/tex]
[tex]\fbox{137y=548}[/tex]
Step 4: Divide both sides by 137.
[tex]\fbox{137y/137 = 548/137}[/tex]
[tex]\fbox{y=4}[/tex]
Answer:
[tex]\fbox{y=\fbox{4}}[/tex]
The local grocer unpacked 34 pounds of apples and pears. The apples came in 7-1b
bags and the pears came in 2-lb bags. In all, he unpacked 7 bags of fruit. How many
bags of apples and pears did he unpack?
3 apple and 4 pear
2 apple and 5 pear
5 apple and 2 pear
4 apple and 3 pear
Answer:
last one
Step-by-step explanation:
i did 7x4 for the apples, then added 2x3 for the pears and got 34 in total.
What is the difference? StartFraction 2 x 5 Over x squared minus 3 x EndFraction minus StartFraction 3 x 5 Over x cubed minus 9 x EndFraction minus StartFraction x 1 Over x squared minus 9 EndFraction.
The expression which is equivalent to the difference of the given algebraic fraction is,
[tex]\dfr\dfrac{(x+5)(x+2)}{x(x-3)(x+3)}[/tex]
What is the difference?Difference is the mathematical operation in which the one number is subtract from another number.
To find the difference of two fraction numbers, we find the least common factor of denominator and write the all numbers as one fraction.
The given expression in the problem is,
[tex]\dfrac{2x+5}{x^2-3x}-\dfrac{3x+5}{x^3-9x}-\dfrac{x+1}{x^2-9}[/tex]
Factorize the denominator of each term as,
[tex]\dfrac{2x+5}{x(x-3)}-\dfrac{3x+5}{x(x-3)(x+3)}-\dfrac{x+1}{(x-3)(x+3)}[/tex]
Here, the least common factor of the denominators is x(x-3)(x+3), therefore, the expression can be written as,
[tex]\dfrac{(x+3)(2x+5)-(3x+5)-(x)(x+1)}{x(x-3)(x+3)}\\\dfr\dfrac{2x^2+5x+6x+15-3x-5-x^2-x}{x(x-3)(x+3)}\\\dfr\dfrac{x^2+7x+10}{x(x-3)(x+3)}\\\dfr\dfrac{(x+5)(x+2)}{x(x-3)(x+3)}[/tex]
Hence, the expression which is equivalent to the difference of the given algebraic fraction is,
[tex]\dfr\dfrac{(x+5)(x+2)}{x(x-3)(x+3)}[/tex]
Learn more about the difference of two fractions here;
https://brainly.com/question/13222
if m∠TUV=(9x+11)°, m∠TUW=(7x-9)°, and m∠WUV=(5x-11)°, find the value of x.
Answer: X = 9
Step-by-step explanation:
We know that a triangle has 3 angles that add up to 180 degrees.
9x+ 11 + 7x - 9 + 5x - 11 = 180
21x - 9 = 180
21x = 189
x = 9
Help Anyone???
A box is shaped like a rectangular prism. The box is 3 ft long, 2 ft tall, and 4 ft wide.
What is the surface area of the box?
Answer:
The total surface area would be 52 square feet
Step-by-step explanation:
2 ( 3*2+ 2*4+3*4)
Answer:
Step-by-step explanation:
What is the measure of the missing side to the nearest tenth?
9
23
х
Answer: 24.7
Step-by-step explanation:
What value of x is in the solution set of 8x 6 12+2x
O-1
O 0
O 3
O 5
Step-by-step explanation:
Just consider the inequalities an equal sign and do the usual way of solving:
8x - 6 > 12 + 2x
8x - 2x > 12 +6
6x > 18
x > 3
*The only rule that you need to remember is that when you multiply or divide a negative number on both sides, then the inequality sign would be reverse.*
Example:
-x + 3 > -2
-x > -2-3
-x > -5
Multiplying both sides by -1:
x < 5
Answer:
D.) 5
Step-by-step explanation:
Solving One-Variable Inequalities on edge
An angle measures 6° less than the measure of its complementary angle. What is the measure of each angle?
Answer:
42°, 48°
Step-by-step explanation:
Complementary angles have a sum of 90 degrees. This lets us write the relation ...
x + (x +6) = 90 . . . . . where x represents the angle; x+6 is its complement
2x = 84 . . . . . . . collect terms, subtract 6
x = 42 . . . . . divide by 2
x +6 = 48 . . . . find the complementary angle
The two angles are 42° and 48°.
Find A Cost of 5 jeans
a.) $230
b.)223
c.)200
d.)250
Answer:
46,44.6,40,50
Step-by-step explanation:
230/5=46
223/5=44.6
200/5=40
250/5=50
three times a number
"Z" is at least negative twealy four
Answer:
whats your question im confused
Step-by-step explanation:
5x-4y=19
x+2y=8
solve the simaltaneous equation
Answer:
( 5, 3/2 )
x = 5
y = 3/2
Step-by-step explanation:
5x - 4y = 19
x + 2y = 8
-------------------
2(x + 2y = 8) = 2x + 4y = 16
----------------------
5x - 4y = 19
2x + 4y = 16
7x = 35
÷7 ÷7
x = 5
-----------------------
x + 2y = 8
5 + 2y = 8
-5 -5
2y = 3
÷2 ÷2
y = ( 3/2 )
I hope this helps!
Answer:
( 5, 3/2 )
Step-by-step explanation:
PLEASE HELP ASAP WILL GIVE BRAINLIEST!!!!
Answer:
The answer you pick is right YOU SMART
Step-by-step explanation:
(Whoever answers correctly will get titled brainiest, preferably with an explanation behind in the next 24 hours)
Answer:
C=2
X=6
W=18
It is done by using power law and negative index law .
HOPE IT HELPS YOU :)
Answer:
c = 2
w = 18
x = 9
Step-by-step explanation:
When you have a power raised to a power, you multiply the exponents. If there are more than one term that are multiplied together, that exponent needs to go to both of the terms.
Also, if you have a negative exponent, you can change the sign of it by pushing that term across the fraction bar. see image.
Jennifer wants to find the area of a parallelogram.
She decomposes the parallelogram and rearranges
the parts to form a rectangle of equal area, as shown below.
Which equation can be used to find
the area of the parallelogram? show work and evidence pls and ty
6(3.6) = 21.6 cm2
2(3.6) + 2(6) = 19.2 cm2
6(3 + .63) = 39.6 cm2
6(3) = 18 cm2
6(3) = 18 cm²
Step-by-step explanation:
area of parallelogram : base * height
Here:
base: 6 cmheight: 3 cmarea of parallelogram:
6 * 3
18 cm²
There is a series of three chemical reactions (1→2→3) that form the overall chemical reaction.
How is the ΔH3 calculated if the others are known?
ΔH3 = ΔH1 + ΔH2 - ΔH4
ΔH3 = ΔH4 -( ΔH1 + ΔH2)
ΔH3 = (ΔH1)(ΔH2)(ΔH4)
ΔH3 = ΔH1 + ΔH2 + ΔH4
From the statement of Hess law, the ΔH3 is calculated when others are known from; ΔH3 = ΔH4 -( ΔH1 + ΔH2).
What is Hess law?Hess law of constant heat summation states that the total heat evolved or absorbed for a series of reactions is the sum of all the heat absorbed or evolved at all steps in the reaction sequence.
Let the heat for the overall reaction be ΔH4 while ΔH1, ΔH2 and ΔH3 designate the heat of reaction for reactions 1,2,3. It then follows that, the ΔH3 is calculated when others are known from; ΔH3 = ΔH4 -( ΔH1 + ΔH2).
Learn more about heat of reaction: https://brainly.com/question/517776
4. Draw the image of rectangle `ABCD` under dilation using center `P`and scale factor 1/2
a) Complete the table to help you by counting distances from P.
b) To complete the last column, simply MULTIPLY each distance by the scale factor.
c) Drag the points A'B'C'D' to the correct locations on the grid. Use the LAST column of the table to help you find the NEW locations of the points.
Can somebody please help me with this ?? :)
The equation is: 3x^3 = 4x + 8
The form is ax^2 + bx + c = 0
Rewrite the given equation to equal 0:
Subtract 3x^2 from both sides to get:-3x^2 + 4x + 8 = 0
Now give each letter their value:
a = -3, b = 4, c = 8
HOW EVER ANSWERS THIS WILL MARKED AS BRAINLIST AND WILL GET A FOLLOW.
In a traffic count a man recorded a 15 min video and counted the cars coming the total cars he counted were 303 cars. So how many cars drove in 1 min? and how many cars drove in 1 hours and 24 hours?