Answer:
- increase the sample size
- choose students from different grade levels
- choose every fourth student in all language arts classes
Your welcome :]
The three options are
increase the sample sizechoose students from different grade levelschoose every fourth student in all language arts classesThe following information should be considered:
For increasing the result validity, the sample size should be increased. The students should be selected from the distinct grade levels.Also every fourth student for all types of language should be selected.Learn more: https://brainly.com/question/10309631?referrer=searchResults
find the value of sin 0 in each of the following figures.
Answer:
[tex]\displaystyle \sin\theta=\frac{4}{5}[/tex]
Step-by-step explanation:
Trigonometric Ratios
The ratios of the sides of a right triangle are called trigonometric ratios.
The longest side of a right triangle is called the hypotenuse and the other two sides are the legs.
Selecting any of the acute angles as a reference, we identify an adjacent leg and an opposite leg. The trigonometric ratios are defined upon those sides.
Sine Ratio
[tex]\displaystyle \sin\theta=\frac{\text{opposite leg}}{\text{hypotenuse}}[/tex]
Let's focus on the angle θ. Its opposite leg is 8 cm and the hypotenuse is 10 cm, thus:
[tex]\displaystyle \sin\theta=\frac{8}{10}[/tex]
Simplifying:
[tex]\boxed{\displaystyle \sin\theta=\frac{4}{5}}[/tex]
A runner's distribution of times for running 1,000 meters has a mean of 4.5 minutes with a standard deviation of 0.75 minutes. One of the runner's times has a z-score of –1.76. What is the runner's time?
Answer:
The runner’s time is 3.18 minutes
Step-by-step explanation:
Mathematically;
z-score = (x-mean)/SD
In this question, we have the z-score but we want to calculate x
From the question
z-score = -1.76
mean = 4.5 minutes
SD = 0.75 minutes
x = ?
Substituting these values, we have that
-1.76 = (x-4.5)/0.75
0.75(-1.76) = x - 4.5
-1.32 = x - 4.5
x = 4.5 -1.32
x = 3.18
Answer:
3.18
Step-by-step explanation:
edg
Andrew paid $40 for a pizza. He forgot that he had a coupon for 10% off the pizza. What would the sale price have been if he used his coupon?
Answer:
The pizza would have been $36
Answer:
The pizza is 36 dollars if he had used the coupon.
Step-by-step explanation:
2x+3y=12 Complete the missing value in the solution to the equation. (_,8) I NEED HELP QUICK
Answer:
-6 is the missing value.....
Answer:
(-6, 8); the missing value is -6
Step-by-step explanation:
First, you need to solve the given equation for x
1: 2x + 3y = 12 (Given)
2: 2x = -3y + 12 (Subtract 3y from both sides to isolate x)
3: x = -1.5y + 6 (Divide both sides by 2)
Now, you can solve for the missing x in the solution set (x, 8):
where x = -1.5y + 6 and y = 8,
x = -1.5(8) + 6
x = -12 + 6
x = -6
So, the missing value is -6
Rectangle ABCD has a width of 8 yards and a length of 20 yards. Rectangle QRST, which is similar to rectangle ABCD, has a length of 40 yards.
Find the scale factor of ABCD to QRST and the perimeter of each rectangle.
Answer: 16 yards would be your answer
The scale factor of ABCD to QRST is 1:2
The perimeter of rectangles ABCD and QRST are 56 yards and 112 yards respectively.
Rectangle ABCD has a width of 8 yards and a length of 20 yards.
Rectangle QRST is similar to rectangle ABCD.
Rectangle QRST has a length of 40 yards.
Scale factor:Therefore, the scale factor of ABCD to QRST can be calculated as follows:
let
x = width of rectangle QRST
8 / x = 20 / 40
8 / x = 1 / 2
x = 16
The scale factor of ABCD to QRST is 1:2
Perimetersperimeter ABCD = 2(8 + 20) = 56 yards
perimeter QRST = 2(16 + 40) = 112 yards.
learn more on similar rectangles here: https://brainly.com/question/8956702?referrer=searchResults
is 8 greater than -8
Answer:
yes
Step-by-step explanation: bc 8 is positive and -8 in negitive. 8 has a greater vealu bc its posivtive. -8 i has a leere vealu bc it negitive.
the price of a computer was decreased by 20% to £136. what was the price before it was decreased
Answer:
170
Step-by-step explanation:
Let x be the original price
x* .20 is the decrease
x - .20x = new price
.80x = new price
.8x = 136
Divide each side by .8
.8x/.8 = 136/.8
x =170
Answer:
7
Step-by-step explanation:
Help, I need help plz. Like NOW!!
Answer:
2nd one
Step-by-step explanation:
Answer:
the second answer
Step-by-step explanation:
( multiply and divide left to right , add and subtract left to right)
A tree casts a 249 centimeter shadow. A person next to the tree casts a 91 centimete
shadow. If the person is 169 centimeters tall, how tall is the tree to the nearest
centimeter?
HELP PLS BRAINLIEST AND POINTS!!!!
Answer:
C
Step-by-step explanation:
Since a triangle's area is half as much as a rectangle or square, considering that they have the same width and length, you can basically eliminate choices a and b.
Choice d doesn't make sense because it's a square, now you are left with choice c.
Answer:
I think it might be d.
what are the roots of the equation -3x + 19 = -x^2+1
Answer:
(3 ± 3√7i)/2Step-by-step explanation:
-3x + 19 = -x^2+1x^2 - 3x + 19 - 1 = 0x^2 - 3x + 18 = 0x = (3 ± √9 - 72)/2 x = (3 ± √-63)/2x = (3 ± 3√7i)/2It has no real solutions and two complex roots
Explain and Show the equation of line perpendicular to y=-1x+2 going through the point (6, 3)
Answer:
y = x-3 is the equation
Step-by-step explanation:
If two lines are perpendicular, the product of their slopes is -1
The general equation form of a straight line is;
y = mx + b
Fro the equation;
y = -1x + 2
The slope is -1
So the equation of the perpendicular line is as follows;
-1 * m = -1
m = 1
so we can use the point-slope equation form
That would be:
y-y1 = m(x-x1)
y-3 = 1(x-6)
y-3 = x-6
y = x-6+3
y = x-3
the sum of all digits of some number is 210. That number is always divisible by ?
Answer:
if the sum of digits is divisible by 3 ,the number is also divisible by 3. Since 210 is divisible by 3, the given number is also divisible by 3.
The ratio of children to adults in a supermarket is 1 : 5
There are 15 children in the supermarket.
How many adults are in the supermarket?
pls answer quickly thanks :)
Answer: There are 75 Adults in the supermarket ask me why if you want a full on explanation. The full on reason of why it is 75 is because if you have a ratio of 1:5 and you now the one is for the kids and it is 15. Then you add 15 from 1 until you get to the 5th ratio. Hence, it brings you all the way to 75 adults. I hope this helped you, and anyone else
Step-by-step explanation:
Is this correct?
:'(
Answer:
I think that's right cus I did this test
What is the value of x when 9( x - 9)= -11
Answer:
x = 70/9
Step-by-step explanation:
9x - 81 = -11
move it to the right
9x = -11 +81
calculate
9x = 70
divide both sides
x = 70/9
PLS HELP WILL GIVE BRAINIEST
A student drops a rubber ball onto a surface.
Answer:
I’m not sure I am correct but I think it is either c or d.
Step-by-step explanation:
Answer:
Its C my guy
Step-by-step explanation:
ANSWER NOW AND U GET !5 and ill answer one of urs
solve (−8x−12)+(9x+4)=
What is an equation of the line that passes through the point (–1,5) and is parallel
to the line x - y = 6?
Answer:
y = - x + 4
Step-by-step explanation:
The first step is to find the slope-intercept form, which is:
y=x-6.
Then, y=x+6
y=-x+4 should be the answer since it passes through the point (-1, 5)
Answer:
y=x+6
Step-by-step explanation:
the other guy was wrong
-8 + (6/7) plz help i need hlep
Answer:
The answer is -0.14
Answer:
0.14 is correct i looked it up to make sure
Step-by-step explanation:
Select the correct answer.
Which table represents a linear function?
NEED ASAP
Answer:
C
Step-by-step explanation:
the rate of change is constant in y (adding 3) and x (adding 2)
$7,600.00 is to be divided in the ratio 5:6:8 respectively for three siblings Joseph, Mike
and Aaron. Calculate how much money each sibling will get.
Answer:
I’ll take 7,6000 dollars
Step-by-step explanation:
Which expression is equivalent to (-7m* + 15m2 – 12m?) + (3m® – 12m* -zma),
m-6
O 3m*+mo+2m2
O 3m5 - 19m+ +8m3 - 12m2
3m4-ma+2m2
3m4 - 19m2 +8m2 - 12m
Answer:
[tex]3m^4-m^3+2m^2[/tex]
Step-by-step explanation:
Given the expression:
[tex]\frac{(-7m^4 + 15m^3-12m^2)+(3m^5-12m^4-7m^3)}{m-6} \\\\Firstly\ simplify\ the\ bracket\ should\ be\ :\\\\=\frac{-7m^4 + 15m^3-12m^2+3m^5-12m^4-7m^3}{m-6}\\\\collect\ like\ terms\ together:\\\\=\frac{3m^5-7m^4-12m^4 + 15m^3-7m^3-12m^2}{m-6}\\\\=\frac{3m^5-19m^4 + 8m^3-12m^2}{m-6}\\\\=\frac{m^2(3m^3-19m^2+8m-12)}{m-6}\\\\=\frac{m^2(m-6)(3m^2-m+2)}{m-6} \\\\=m^2(3m^2-m+2)\\\\=3m^4-m^3+2m^2[/tex]
Answer:
c
Step-by-step explanation:
Simplify the following surd expressions-
Answer:
[tex]\sqrt{2}[/tex] and 4[tex]\sqrt{11}[/tex]
Step-by-step explanation:
To simplify like surds, add/ subtract the coefficients.
(a)
[tex]\sqrt{2}[/tex] (6 - 5)
= [tex]\sqrt{2}[/tex] (1)
= [tex]\sqrt{2}[/tex]
(b)
[tex]\sqrt{11}[/tex] ( 1 + 3)
= [tex]\sqrt{11}[/tex] (4)
= 4[tex]\sqrt{11}[/tex]
Find x =
-47
-27
-73
-33
Mrs . Kerr is going to pack 9 carrots, 12 crackers, and 18 grapes into lunch boxes. How many of each food item will be in a lunch box if she pack the into the greatest number of identical lunch boxes
Answer:
3 carrots, 4 crackers, and 6 grapes.
Step-by-step explanation:
The greatest common factor of 9, 12, and 18 is 3, so we know that we can make at most 3 identical lunchboxes. Now we have to divide each number by 3 to figure out how much of each item is in each lunchbox. 9/3=3, 12/3=4, and 18/3=6 so there will be 3 carrots, 4 crackers, and 6 grapes in each lunchbox.
A newly planted tree is supported with a 6-m wire. The wire is attached 3
m up the tree. How far from the base of the tree is the wire secured to the
ground? Express your answer to the nearest tenth of a metre.
PLEASE HELP
ILL GIVE BRAINLIEST AND LOTS OF POINTS BTW
Answer:
I have the same question but no one will help me they are mean
Step-by-step explanation:
Which of the following has the least value?
A. 13/15
B. 7/8
C. 2/3
D. 3/4
(I also need the work if not its ok!)
Answer:
its c
Step-by-step explanation:
Answer:
C. 2/3
Step-by-step explanation:
To solve this, we should come up with a common denominator first.
The least common denominator (LCD) of the four fractions would be 120.
So, first multiply each fraction's denominator to get 120, and multiply the numerator by the same amount.
ex. 3/4
4 x 30 = 120
3 x 30 = 90
We get 90/120.
After doing this with each fraction, we get;
13/15 = 104/120
7/8 = 105/120
2/3 = 80/120
3/4 = 90/120
Now, it is easier to see which fraction has the least value (or the one that is the smallest. Your answer is 2/3, since 80/120 is the smallest out of the four.
HELP PLZ
What connections can we make between finding the slope of a line connecting two points and the distance between those same two points?
Answer:
Using two of the points on the line, you can find the slope of the line by finding the rise and the run. The vertical change between two points is called the rise, and the horizontal change is called the run. The slope equals the rise divided by the run: Slope =riserun Slope = rise run .
Step-by-step explanation:
hope this helps