A school principle wants to observe if natural light has an effect in the classroom learning. The principle randomly chooses two groups of students of the same age and grade, and places both groups in rooms on opposite sides of the school, one facing east and one facing west, during a 10am class. The test scores of both classes are compared at the end of the semester.
How could this observation be changed into a valid experiment of the effects of natural light?
A. by introducing adjustable light fixtures in each classroom
B. by tinting the windows in both classrooms
C. by including classrooms facing north and south
D. by introducing adjustable blinds in each classrooms
If beans are 10 cans for $10, how much will it be for one can?
Answer:
1 can=1 dollar
Step-by-step explanation:
10÷10=1 therefore 1 can equals 1 dollar
Answer:
1 dollar :'
b/c yes, i hope this was rhetorical
HELP I NEED HELP ASAP
Answer:A
Step-by-step explanation:
Find the equation of the line use exact numbers
Y=_x+_
Answer:
Y = 2x + 4
Step-by-step explanation:
y= mx +b
First, find m (aka the slope)
[tex]\frac{rise}{run}[/tex] = [tex]\frac{2}{1}[/tex] = 2
m = 2
Find b (aka the y-intercept)
The line touches the y-axis at (0,4). Therefore b = 4
Plug m and b into the slope-intercept equation
y = mx +b
y = 2x + 4
what is the distance from L to M?
A. 100 units
B. 14 units
C. 2 units
D. 10 units
Answer:
D. 10 units
Step-by-step explanation:
Using the distance formula:
d = √(x2 – x1)² + (y2 – y1)²
Plug in the values of the points:
d = √(3 – (-5))² + (-2 – 4)²
d = √(8)² + (-6)²
d = √64 + 36
d = √100
d = 10
I will give brainliest!
Answer:
Step-by-step explanation:
what is 4 = 4( c-18)
Answer:
c = 19
Step-by-step explanation:
Let's rephrase this equation:
4(c-18) = 4
Let's plug in 19
4(19-18) = 4
19-18 = 1
4 multiplied by 1 is 4 so therefore, c = 19
please help me!! as quick as u cann
Answer:C
Step-by-step explanation:
Write the equation of the line perpendicular to y=-1/4x-7 that passes through the point (3,-2)
Step-by-step explanation:
the equation of line is given by;
y-y1=m(x-x1)
17
A straight line passes through 0 and (2, 6)
Circle the equation of the line
[1 mark]
Answer:
y = 3x
Step-by-step explanation:
To find out what the equation is here, divide the y coordinate by the x coordinate of the point given (2, 6). Here divide 6 by 2. That would equal 3. That means that the y coordinate is 3 times as much as the x coordinate. As a result we can make the equation y = 3x out of what we now know.
pls solve both i’m begging ♀️♀️
Answer:
$17 and $3
Step-by-step explanation:
He had $ 5 right, he spent 12 so just add 12. Work backwards. Bella spent 12 dollars on 3 packs because 3 packs * $4 = 12. Hope this makes sense. You just want to use the inverse operation.
or
1. x - 12 = 5. x = 17
2. 4x = 12. x = 3
can you help me solve
Answer:
i think d
Step-by-step explanation:
Find the slope (6,-6) and (8,8)
Answer:
m=7
Step-by-step explanation:
7100 dollars is placed in an account with an annual interest rate of 7.75%. How much will be in the account after 30 years, to the nearest cent ?
$66,646.40 is the correct answer
The amount that will be in the account after 30 years, to the nearest cent is to be considered as the $66,646.40.
Calculation of a future value;Since
The interest rate be like = 7.75%
The time period = 30
The present value = $7,100
The PMT is = $0
Now the following formula is used;
So,
= -FV(RATE,NPER,PMT,PV,TYPE)
After applying it, the future value should be $66,646.40.
Learn more about rate here: brainly.com/question/24546293
. Suppose lines
←→
PQ and
←→
QR are perpendicular, and ∠RPQ = 17◦
. What is the measure of ∠QRP?
Answer:
so fh
Step-by-step explanation:
A child tosses a baseball up into the air. On its way down, it gets caught in a tree for several seconds before falling down to the ground.
Sketch a graph that represents the height of the ball, as a function of time.
Be sure to include a label and a scale for each axis.
PLEASE HELP MEEE!!!!
this is due today at 12 help!!
(image included)
Answer:
most likely asking for something like this
Step-by-step explanation:
Answer:
Read the step-by-step for the entire answer!!!
Step-by-step explanation:
Whenever you have situations like these you have to look at it from the perspective given.
If you are throwing a ball it's going to start at ground 0 where the child is, therefore the height of the child is how high off the ground the ball is at 0 seconds.
If it is thrown, and it is stuck in the tree for a few seconds, then that means on the graph you will see an incline of the graph, and then a stale line for a few seconds as the ball is stuck in the same height for a few seconds.
After the ball falls down, then so will the height of the ball.
t - a function of time, is always on the x-axis because time variables are usually on the x-axis of a graph.
I choose seconds as a measurement of time because in a realistic situation a ball will be in the air for seconds.
h - the height of the ball, will be on the y-axis of the graph because it is a dependent variable (i.e. the height of the ball is dependent on how long the ball is in the air for).
The image below is the graph.
Find the variance of the data set below. Round to the nearest tenth. 6, 5, 2, 5, 8
Answer:
s2 = 4.7
Step-by-step explanation:
2=∑=1(−⎯⎯⎯)2−1
2=−1
2=18.85−1
2=18.84
2=4.7
Subtract.
(6x2 + 5) - (4x-3)
WILL GIVE BRAINLIEST
Please help
Answer:
Remember that 6x^2 and -4x are not like terms. I drew a circle around them since those two will come first then goes the 5 and 3. Hopw this helps, thank you !!
What is equalivalent to (-3m+5) + (m-11)
Answer:
-2m - 6
Step-by-step explanation:
The park is a rectangular park with an area of 20 square miles. The park is 4 miles wide. What is the length in miles?
Answer:
5 miles.
Step-by-step explanation:
Because area is just length times width so in that sense 20/4 is 5 :)
Help I’m on a time limit
Answer:
I think everything you have selected already is correct
Step-by-step explanation:
triangle FGK is congruent to triangle FJK by the SSA Theorem
Angle GKH is congruent to JKH since they are apart of two triangles that are known to be congruent by the SSA Theorem
Angle GFH is congruent to JFH because they are on triangles that are congruent by the SSS Theorem
Then line FG and line KG cannot be proven to be congruent since they are of no correlation to each other
I hope this helps, sorry if I am incorrect
How do I calculate this?
6( 2x + 3 ) = 2 ( 5x - 3 )
Answer:
x= -33/2 or x=-16.5
Step-by-step explanation:
Expand the bracket
6(2x+3) = 2(5x-3)
12x+18=10x-15
Bring like terms together
12x-10x=-15-18
2x=-33
x=-33/2
Your television remote control has buttons for digits 0-9. If your press two buttons, how many numbers are possible if
a) the same button may be pressed twice
b) the same button may not be pressed twice
(A) I got 10(10)=100 points in remote space.
(B) I also got 10(9)=90 points in remote space
Answer:
a) 100
b) 90
Step-by-step explanation:
For the first question, the first button you press will have 10 possibilities, from 0-9. For the second button, you will still have 10 possibilities since the same button may be pressed twice. Therefore, you get 10*10=100.
For the second one, the same button may not be pressed twice. For the first button press, you have 10 possibilities, but for the second button, you have 1 less possibility since you aren't allowed to push the button you pressed before. So there will be 9 possibilities. 10*9=90.
HELPP BHFEJKFFE PLEASEE!!!!!! :))
Answer:
i would say 5
Step-by-step explanation:
4 is almost the same size as [tex]x[/tex] but [tex]x[/tex] is just a little bit longer and its slanted
I feel generous so here yall go first come first serve
Answer:
thanks
Step-by-step explanation:
thank you for points
Which of the following expressions is equivalent to (2x + 3)(x2 – 7)?
Step-by-step explanation:
what are the following expressions????
You didn't give any choices but I am still going to solve this.
First let's separate this a little bit.
(2x+3)(x^2-7)
=2x(x^2-7)+3(x^2-7)
Now we can multiply these in again.
=2x^3-14x+3x^2-21
=2x^3+3x^2-14x-21
PLS HELPPP
To create a box-and-whisker plot for
these test scores:
31, 55, 61, 75, 79, 85, 92, 94, 97
We first have to determine Q1, Q2,
and Q3.
Q1
Q2
Q3
10
20
50
60
70
80
90
100
What is the median of the data set?
Answer:
oh i hade this i got wrong but the answer is 79
Step-by-step explanation:
Write an equation of a line in slope-intercept form given the slope (m) and the y-intercept (b).
Slope, m =-
y-intercept, b = 7
Answer:
y= - _ +7
Step-by-step explanation:
A right triangle has legs that measure 8 cm and 10 cm. What would the length of the hypotenuse
be to the nearest whole number?
Answer:
around 13
Step-by-step explanation:
HELP ME PLEASEEE!!!!!!!!!