A. Testing the effectiveness of a new reading program by allowing a
classroom to use it and comparing the results with another classroom that doesn't use it
What is an experiment?An experiment is a technique used to confirm or deny a hypothesis, as well as assess the likelihood or effectiveness of something that has never been tried before. Experiments show what happens when a specific factor is modified, which sheds light on cause-and-effect relationships.
To learn more about experiments refer to:
https://brainly.com/question/25303029
#SPJ2
6*x= 18
Pls answer I will give brainliest
Answer:
[tex]x=3[/tex]
Step-by-step explanation:
[tex]6x=18~(Given)\\\\\frac{6x}{6}=\frac{18}{6}~(Divide~6~on~both~sides)\\\\x=3~(Simplify)[/tex]
Answer:
If the question is 6x = 18 meaning 6 multiplied by X is the same as 18, then the answer is 2
If the question is 6 to the power of X is the same as 18, the answer is 1.61314719
So I think your question is the first one lol
Step-by-step explanation:
6 multiplied by what number is 18?
6 multiplied by 2 is 18
So X must equal 2
I hope this helped! Brainliest if it did? No pressure!
have a great day! :D
Maintaining the chlorine balance in the pool prevents bacteria from growing in the water. The basic
balance of chlorine to water is a concentration of 3 mg/Liter ( 3PPM).
John has a pool 16 meters long, 5 meters wide and 2.4 meters deep. How much chlorine does John
need to pour into the pool?
Answer:
Step-by-step explanation:
The volume of the pool:
16 * 5 * 2.4 = 192
1 liter = 0.001 cubic meters
There are 192 cubic meters in the pool.
Therefore, John needs to pour 0.192 liters of chlorine into the pool.
Hope this helped!
Hiking trail is 9 tenths mile long. There are 7 markers evenly posted along the trail to direct hikers. This results in 6 spaces of the same length between the markers. How far apart are the markers?
Answer:
0.1286 miles
Step-by-step explanation:
.9/7=.1286 [rounded]
Find the slope of the line containing the pair of points.
(2,0) and (0, -4)
The slope of the line is
(Type an integer or a simplified fraction.)
Last year there were 249 pies baked for the bake sale. This year, there were c pies baked. Using c, write an expression for the total number of pies baked in the two years
Answer:
249 + c
Step-by-step explanation:
The total of the 2 years is 249 from last year plus c from this year.
249 + c
Indicate which property is illustrated in step 1
The line segment goes from -7 to 1.
-7 to 0 is 7 units.
0 to 1 is 1 unit.
7 + 1 = 8 units in total
The length of the red line segment is 8 units.
Hope this helps!
Geometry, Unit 2, Lesson 6)
Triangles ACD and BCD are isosceles. Angle DBC has a measure of 84 degrees and angle
BDA has a measure of 24 degrees. Find the measure of angle BAC.
ADAC and BDBC
A
D
+
B
C
Type the answer in the box below.
Angle BAC has a measure of
degrees
Answer:I think the answer is 18 degrees.
Step-by-step explanation:in the picture.
Please help with this postulate! :)
Answer:
C. ASA postulateStep-by-step explanation:
We observe two angles and the included side of ABC are congruent to two angles and the included side of DBE:
∠A ≅ ∠D∠C ≅ ∠ EAC ≅ DEThis is called ASA
Answer:
ASA postulate
Answer C is correct
Step-by-step explanation:
<ACB = < BED (Angle)
AC = DE (Side)
<CAB = < BED = 90° (Angle)
Therefore,
ABC triangle is congruent to DBE triangle according to ASA postulate.
Hope this helps you.
Let me know if you have any other questions :-):-)
The amount Shari earns at her job is represented by the equation below. When r is her hourly rate and x is her number of hours she works in a week and she earns in dollars that week. If she earns $281.25 for working 25 hours in a week, what is her hourly rate?
Answer:
Shari's hourly rate is $11.25
Step-by-step explanation:
$281.25/x=r
= $281.25/25=r
= $11.25
whats the smallest natural number that has exactly 6 factors and isn't divisible by 2,3 or both
Answer:
- 25
Step-by-step explanation:
Tonya saved $564 in one year. If she saved the same amount each month, how much did Tonya save in two months?
Please help >.< (image below)
Answer:
blue and red :>
Step-by-step explanation:
Evaluate and match each expression on the left to its value on the right, when x = 9 and y = 6.
12 - x
x + 3y
4y - 10
1/3xy
Answer:
12 - x= 3
x + 3y = 27
4y + 10 = 34
1/3xy = 18
Step-by-step explanation:
evaluating where x = 9 and y = 6
12 - x
12 - 9 = 3
x + 3y
9 + 3(6) = 9 + 18 = 27
4y + 10
4(6) + 10 = 24 + 10 = 34
1/3xy
1/3(9* 6 ) = 54 / 3 = 18
The values of the expressions are given below:-
12 - x= 3
x + 3y = 27
4y + 10 = 34
1/3xy = 18
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Evaluating where x = 9 and y = 6
1) 12 - x
12 - 9 = 3
2) x + 3y
9 + 3(6) = 9 + 18 = 27
3) 4y + 10
4(6) + 10 = 24 + 10 = 34
4) 1/3xy
1/3(9* 6 ) = 54 / 3 = 18
Therefore, the values of the different expressions are solved above.
To know more about an expression follow
https://brainly.com/question/723406
#SPJ2
Roberta makes $9 an hour plus a 12.5% commission selling jewelry. How much does she
earn on an 8 hour shift in which she sells $380 worth of jewelry?
Answer:
404.5 dollars
Step-by-step explanation:
8x9+(0.875x380)=404.5
QUESTION 2.1 POINT
If the probability that a randomly chosen college student takes statistics is 0.44, then what is the probability that a randomly
chosen college student does not take statistics? Give your answer as a decimal.
Provide your answer below:
P FEEDBACK
Content attribution
Answer: 99.56%
Step-by-step explanation:
Well assuming we're working with a full poll of all 100% of students, and only 0.44%, so 100 - .44 is 99.56
Hey can anyone help please and thank you !
Answer:
x = 2
Step-by-step explanation:
Answer:
X=2
Step-by-step explanation:
9x+4=3x+16
9x-3x=6x
6x+4=16
16-4=12
12/6=2
If x=-2 and y= √12, then 2(3x³+2y²)=
Answer:
2%283x%5E3+%2B+2y%5E2%29
2%283%28-2%29%5E3+%2B+2%28sqrt%2812%29%29%5E2%29
2%283%28-8%29+%2B+2%2812%29%29
2%28-24+%2B+24%29
2%280%29
0
So 2%283x%5E3+%2B+2y%5E2%29=0 when x=-2 and y=sqrt%2812%29
Answer:
0
Step-by-step explanation:
The solution is in the attached file
London is standing in a stadium and has the option of running up a staircase or down a staircase for exercise. The function f(x)=\frac{1}{25}\big(\left|6x\right|+4x\big)f(x)= 25 1 (∣6x∣+4x) will determine how many calories London will burn if she runs up xx steps. Use a negative value for xx if she runs down the stairs. Find and interpret the given function values and determine an appropriate domain for the function.
The domain of a function is the set of input values, the function can take.
The domain of the function is: [tex]\mathbf{(-\infty,\infty)}[/tex]
The function is given as:
[tex]\mathbf{f(x) = \frac{1}{25}\big(\left|6x\right|+4x\big)}[/tex]
The above function represents the number of steps she runs or up down from her current position.
Because she can move in either directions (i.e. up or down), then it means that, the domain of the function is: [tex]\mathbf{(-\infty,\infty)}[/tex]
Read more about domain at:
https://brainly.com/question/4767962
Please show all your work! Tysm if u do :-)
I will give brainilest!
Answer:
3 2/3= 11/3
Step-by-step explanation:
3x3/3=9/3+ 2/3=11/3
If rolling a pair of dice, which result has the highest probability?
A) sum of 2
B) sum of 7
C) sum of 9
D) sum of 12
Answer:
7
Step-by-step explanation:
Negative three times a number plus 4 is no more than the number minus 8 find the number
i believe the equation is -3x+4≤x-8
the answer would be x≥3
HELP PLEASE ILL MARK AS BRAINLIEST
Answer:
hey where I sent I solved it in my notebook
Simplify.
Square root of - 24 (imaginary numbers)
Answer:
[tex]2*\sqrt{-(2*3)}[/tex]
Evaluate. 4^3 x 4^7 (4^2)^6
PLEASE HELP
will mark brainliest!!!
Answer:
f(x) = 8x
Step-by-step explanation:
The linear equation given in the form of a table is shown as:
[tex]\left[\begin{array}{ccc}x&f(x)\\3&24\\4&32\\5&40\\6&48\end{array}\right][/tex]
Because the equation is linear, in order to find the equation written in slope-intercept form, divide the rise (f(x)) by the run (x):
24 ÷ 3 = 8
32 ÷ 4 = 8
40 ÷ 5 = 8
48 ÷ 6 = 8
Because the quotient for each relation is 8, the linear equation can be written as f(x) = 8x.
maya placed a 25-foot ladder is 6 feet from the wall, how far up the wall is the top of the ladder
Evaluate the expression.
-2(12 – 2(-4))?
What is the value of the expression
Answer:
-40
Step-by-step explanation:
-4 * 2 = -8
-8*-1= 8
12+8 = 20
20*(-2) =-40
Answer:
The answer is -40.
Step-by-step explanation:
Use PEMDAS and the distributive property.
PLEASE MARK AS BRAINLIEST!!!!!HELP ME OUT PLEASE
What is the slope of this line?
Answer:
-3/4 I think sorry if i'm wrong i can't see the rest of the graph to make sure it's totally correct.
Step-by-step explanation:
l really need help plz i will mark brainliest plz help
[tex]\\ \sf\longmapsto x+5+x-5=80[/tex]
[tex]\\ \sf\longmapsto 2x=80[/tex]
[tex]\\ \sf\longmapsto x=40[/tex]
Angles are
180-80=100°x+5=40+5=45°x-5=40-5=35°No sean was wrong
Answer:
Sean is not correct. The answers are 100°, 35° and 45°.
Step-by-step explanation:
In my working, I labeled the part without a variable as a°.
Step 1: a° + 80° = 180° ( angles on a straight line sum up to 180° )
Step 2: a° = 180° - 80°. This is because 80 moves from the left side of the equation to the right side of the equation which affects it's sign( from + to -)
Step 3: a° = 100° . Subtract 80 from 180.
So we know that 100 is correct. Let's find the remaining angles.
Step 4: a° + ( x - 5 )° + ( x + 5 )° = 180° ( angles in a triangle sum up to 180°)
Step 5: 100° + x - 5° + x + 5° = 180°. Fix in the values of each variable correctly. Here we only know the value of variable a.
Step 6: (100° - 5° + 5°) + (x + x) = 180°. Group like terms to make calculations easier.
Step 7: 100° + 2x = 180°. -5+5 is the same as 5-5 which would give you 0. 0 + 100° is 100°.
Step 8: 2x = 180° - 100°. Move like terms to one side.
Step 9: 2x= 80°. Subtract 100° from 180° to get 80°
Step 10: 2x/2 = 80°/ 2. Divide both sides by 2.
Step 11: x= 40°. But this isn't the final answer. This is just the answer for all the x you see in the diagram. So fix in the values correctly.
Step 12: ( x-5° ). State it for your teacher to know which question you are given an answer to. From our calculations, we know that x = 40°.
Step 13: (40° - 5°)
Step 14: ( 35°). 40 minus 5 is 35.
Step 15: 35°. multiply the figure in the bracket by one. We can't leave our answer in the bracket.
Step 16: (x + 5). Using the same knowledge, fix in the values and do as the operation sign says.
Step 17: ( 40° + 5 °)
Step 18: (45°)
Step 19: 45 °
Step 20: Sean is not right because the angles in the triangle are 100°, 35° and 40°.
Simplify these expressions a) 5x +3x + 2y + 4y b) 6x - 2x + 8y - 6y
Answer:
[tex]a) \: 5x + 3x + 2y + 4y \\ = 8x + 6y[/tex]
[tex]b) \: 6x - 2x + 8y - 6y \\ = 4x + 2y[/tex]
I hope I helped you^_^