A researcher is interested in understanding whether the number of people in a room affects how much a person eats. During the experiment, the researcher varies the number of people in the room and records how much each participant eats. This is an example of:
Answer:
quantitative manipulation of the independent variable
Dan and Paul share some money in the ratio 13:5.
Dan decides this is unfair so he gives Paul £32 of his share to make the ratio 1:1.
How much did Paul originally have?
Answer:
Dan had $104
Paul had $40
Step-by-step explanation:
13x-32=5x+32
8x=64
x=8
8*5=40
13*8=104
using the number 2, 4, 6 and 8 write an expression that equals 60
Answer:
(8-2)(4+6)
Step-by-step explanation:
1. (8-2)(4+6)
6x(4+6)
2. 6x10
3. =60
BRAINLIEST
Solve for X. Round to the nearest tenth.
Answer:
a=180-(45+37)
b=180-(9+24)
c=180-(42+64)
d=180-(70+13)
This scatter plot shows the height of a card tower and the amount of time used to build it (in minutes).
Based on the information in the scatter plot, what is the best prediction for the height of a card tower at 10 minutes?
Answer:
It’s 7 inches
Step-by-step explanation:
I hope this helps
Following the trend line of the scatter plot, the height of a card tower at 10 minutes, the best prediction that can be made given the answer options is:
5 inches.Recall:
A scatter plot can be used to make prediction as it shows how two variables are related.From the scatter plot given, it shows that as the amount of time increase, the height of the card tower also increases.
Therefore, following the trend line of the scatter plot, the height of a card tower at 10 minutes, the best prediction that can be made given the answer options is: 5 inches.Learn more about scatter plot on: https://brainly.com/question/20647477
What is a scalar quantity ?
Answer:
A scalar quantity is defined as the physical quantity with only magnitude and no direction.
84 = 4(1– 49)
please give an explanation
Answer:
give me more information on this
hey guys did I get any of these right, if not pls help me.
Answer:Yep! All of them are right! Great job!
Step-by-step explanation:
Round 8,213 to the nearest thousand
Answer:
yes
Step-by-step explanation:
because 8213 its come to 10000 also
Consider the two triangles.
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To prove that the triangles are similar by the SAS
similarity theorem, it needs to be shown that
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Answer:
By Both
Step-by-step explanation:
You have all 3 corresponding sides are proportional so you have SSS. That is
24/8=15/5=18/6
You also have SAS because 15/5=18/6 and you have the angle between the sides that I'm referring to in that proportion.
To prove that the triangles are similar by the SAS similarity theorem the two sides and angles are proportional.
What is Triangle?A triangle is a three-sided polygon that consists of three edges and three vertices.
Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion .
From definition of similar triangles the 3 corresponding sides are proportional so you have SSS.
Such that 24/8=15/5=18/6
We also have SAS because 15/5=18/6 and you have the angle between the sides.
Hence, to prove that the triangles are similar by the SAS similarity theorem the two sides and angles are proportional.
To learn more on Triangles click:
https://brainly.com/question/2773823
#SPJ7
Elisha is renting a limo to take her friends out for her birthday. The limo company charges a reservation fee of $129 and $65 per hour. Her total bill was $584. Write and solve an equation to find the number of hours, h, Elisha rented the limo
50 POINTS! The fifth term of an arithmetic sequence is 11 and the tenth term is 41. What is the first term?
The common difference d is
(41–11) / (10–5) = 6.The first term is
11 - 6(5–1) = -13.so , the first term is -13
Answer:
-13Step-by-step explanation:
The fifth term:
[tex]a_5=a+4d = 11[/tex]The 10th term:
[tex]a_{10}=a+9d=41[/tex]Subtract side-by-side and find d:
9d - 4d = 41 - 115d = 30d = 6Find the first term:
a = 11 - 4*6 a = 11 - 24a = - 13can somebody please help me
Answer:
b
Step-by-step explanation:
6 weeks to 12 days answer?
Judy is trying to stack books on a shelf that is 20 inches tall. If each book is 4/5 inches thick, how many
books can she stack on the shelf?
George bought 2.45 pounds of tofu and 1.62 pounds of fish. How many more pounds of tofu did he buy than fish.
Answer:
0.83 pounds
Step-by-step explanation:
2.45 take away 1.62
Option A charges $500 for the year and $65 each time she visits the doctor. Option B charges only $300 for the year but $95 for each doctor's visit. How many visits will she have to make in a year for Option A to be the better deal?
Answer:
6 visits will she have to make in a year for Option A to be a better deal
Step-by-step explanation:
Marian is making accessories for the soccer team. She uses 666.12 inches of fabric on headbands for 36 players and 3 coaches. She also uses 310.68 inches of fabric on wristbands for just the players. How much fabric was used on a headband and wristband for each player?
I need help with this
Answer:
answe is about 23. something
Step-by-step explanation:
What is the midpoint between points (4, 7) and (1, 1)?
Enter your answer down below
Answer:
(2.5, 4)
Step-by-step explanation:
(4, 7) (1, 1)
midpoint formula is ( (x1 + x2) / 2 , (y1 + y2) / 2 )
=>( (4 + 1)/2 , (7 + 1)/2 )
=> (5/2, 4)
=> (2.5, 4)
Evaluate the expression m+np−q if m=1/15, n=−1/3, p=−0.4, and q=2 1/3. Express your answer as a decimal. Use bar notation if necessary.
Answer:
-2.4, or -72/30 or -2 4/10
Step-by-step explanation:
m + np - q
m = 1/15
n = -1/3
p = -0.4
q = 2 1/3
1/15 + (1/3)(-0.4) - 2 1/3
1/15 + (-4/30) - 2 1/3
2/30 - 4/30 - 70/30
-2/30 - 70/30 = -72/30
-72/30 = -2.4
-Chetan K
can someone pls give me an example of an area of a trapezium
Answer:
I got this from one of my textbook for the previous years
Hope this helps:)
Could somebody help n explain pls thx
Answer:
lines are perpendicular
Step-by-step explanation:
• Parallel lines have equal slopes
• The product of the slopes of perpendicular lines = - 1
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Rearrange the given equations into this form and extract the slope
3x - 2y = - 6 ( subtract 3x from both sides )
- 2y = - 3x - 6 ( divide through by - 2 )
y = [tex]\frac{3}{2}[/tex] x + 3 ← in slope- intercept form
with slope m = [tex]\frac{3}{2}[/tex]
----------------------------------
4x + 6y = 2 ( subtract 4x from both sides )
6y = - 4x + 2 ( divide through by 6 )
y = - [tex]\frac{4}{6}[/tex] x + [tex]\frac{2}{6}[/tex] , that is
y = - [tex]\frac{2}{3}[/tex] x + [tex]\frac{1}{3}[/tex] ← in slope- intercept form
with slope m = - [tex]\frac{2}{3}[/tex]
--------------------------------------
[tex]\frac{3}{2}[/tex] ≠ - [tex]\frac{2}{3}[/tex] , then lines are not parallel
[tex]\frac{3}{2}[/tex] × - [tex]\frac{2}{3}[/tex] = - 1
Thus the lines are perpendicular to each other
there are between 30 and 40 sweets in a bag . ben and daisy share the sweets in the ratio of 4:5. there are no sweets remaining in the bag .
how many sweets were in the bag to begin with
Answer: 36.
Step-by-step explanation:
4+5 = 9
Please help me The point D,E,F and G all lie on the same segment, in that order, such that ratio of DE:EF:FG is equal to 4:1:4. If DG=36, find EG
Answer:
4+1+4+g=36
g=27
dg=32
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
DE : EF : FG = 4 : 1 : 4
DG = 36
DG = DE + EF + FG
-> 4x + x + 4x = 36
9x = 36
x = 4
so EG = EF + FG
= x + 4x
= 5x
= 20
9. What are all the values for y?Plug in the x value into the equation to find 1 point
y. Equation is y=-2x + 1*
Answer: C
Step-by-step explanation: see picture
i need help with two questions please, guathmath doesn't seem to help!
Pls solve this, it’s math
And only if you know the answer pls
Since the unit circle has a radius of 1 we know that r = 1 and that our angle is 60 degrees. Using sin and cos functions we can then find the x and y coordinates of point A. since [tex]cos(\alpha ) = \frac{x}{1}[/tex] and [tex]sin(\alpha ) = \frac{y}{1}[/tex] (where [tex]\alpha[/tex] = the angle)
[tex]A = (x,y) = (cos(a),sin(a))[/tex] because of the identity that cos(a) = x and sin(a) = y
Using the angle and the previously described identity we can find the coordinates with cos(60) = x = 1/2 and sin(60) = y = [tex]\frac{\sqrt{3} }{2}[/tex] to get A =(x,y) = [tex](\frac{1}{2},\frac{\sqrt{3} }{2})[/tex].
From here we can work backwards and find that BC = x = [tex]\frac{1}{2}[/tex] and that AC = y =[tex]\frac{\sqrt{3} }{2}[/tex] and finally we know that AB = r = 1 because it is a radius of the unit circle and must be 1.
-This probably isn't the way you were taught to solve this problem, but it is how we do it in physics and real-life.
PLZ HELPP I NEED THIS ASAP ROUND TK THE NEAREST TENTH HELP ASAP GIVING BRAINLEST
Answer:
3.9
Step-by-step explanation:
Find the y-intercept and then write the linear equation for the line passing
through (-12, 5) with m = -2/3,
Answer:
Y-intercept: -3
Equation: y = -2/3x -3
Step-by-step explanation:
Slope intercept equation: y = mx + b, m is the slope and b is the y-intercept
Substitute m with -2/3, your equation should now be y = -2/3x + b
To find the y-intercept, plug in the point (-12,5) and solve for b.
1. 5 = -2/3(-12) + b
2. 5 = 8 + b
3. b = 8 - 5
4. b = 3
f(x)=2x-6 answer please
Answer:
well that's already the slope and your i-intercept would be -6
Step-by-step explanation:
