Answer:
Step-by-step explanation:
Remark
The formula for this is
Heat = m * c * Δt
Givens
Heat = unknown
m = 200 grams
c = 4.184 Joules / grams oC
Δt = the change in temperature = 35.7 - 22.3 = 13.4
Solution
Heat = 200 * 4.184 * 13.4
Heat = 11213 Joules
Heat = 11.2 Kj
It's hard to get the correct number of sig digs because the 200 is not qualified in any way.
Part 2.
This can really puzzle you until you know that heat given up = the heat taken on. The heat taken on was 11.2 Kj. The Butane lighter must have given that heat on.
Heat of Combustion = Heat Given Up / Number grams burned.
Heat of Combustion = 11.2 Kj / 0.23 grams
Heat of Combustion = 48.8 Kj / gram
Mr. Turner has two Math 2 classes, with one class, he lectured, and the students took notes.
In the other class, the students worked in small groups to solve math problems. After the first
test, Mr. Turner recorded the student grades to determine if his different styles of teaching
might have impacted student learning,
Class 1: 80, 81, 75, 70, 72, 74, 76, 77, 77, 79, 84, 88, 90, 80, 78
Class 2: 70, 90, 88, 89, 86, 86, 82, 77, 79, 84, 84, 86, 87, 88, 88
2x+20 3x-15 solve for x=?
Answer:
X = 35
Step-by-step explanation:
Since the line is crossing two parallel lines the measurements are equal then you solve for X.
2X + 20 = 3X - 15
-2X -2X
20 = X - 15
+15 +15
35 = X
Answer:
x=35
Step-by-step explanation:
The expressions are corresponding angles which are congruent.
Set the two equations equal to each other.
2x+20=3x-15
Add and subtract like terms
35=1x
Divide:
35/1=35
X=35
Hope this helps! :)
Correct me if I'm wrong!
The sum of two numbers is 25. The difference between twice the first number and the second number is -10. Find the numbers
Answer:
15 and 10
Step-by-step explanation:
Let the two numbers be x and y
x+y= 25
2x-2y=-10
A line has a slope of O and passes through the point (-8, 10). What is its equation in
slope-intercept form?
Answer:
Slope-intercept form: y = 10 Point-slope form: y − 10 = 0 ⋅ ( x + 8 )
Step-by-step explanation:
Powers of products and quotients (integer exponents)
Answer:
C
Step-by-step explanation:
Wallace walked 9/10 of a mile for 7 days last week. How many miles did he walk?
Answer:
6.3 miles
Step-by-step explanation:
9/10 x 7 = 63/10 = 6.3 miles
Hope that helps!
-Sabrina
4x + 3 = x + 2(x + 7)
step by step
Answer:
x=11
Step-by-step explanation:
4x + 3 = x+ 2x + 14
4x + 3 = 3 x + 14
4x - 3x = 14 -3
x= 14 - 3
x= 11
Answer:
x=11
Step-by-step explanation:
Distribute :
4x + 3 = x + 2( x+ 7)
4x + 3 = x + 2x + 14
Combine like terms :
4x + 3 = x + 2x + 14
4x + 3 = 3 x+ 14
Subtract 3 from both sides of the equation :
4x + 3 = 3x + 14
4x + 3-3 = 3x + 14 -3
Simplify :
what ever way you know how to subtract the numbers you should get this answer :
4x = 3x + 11
Subtract 3 from both sides of the equation :
4x = 3x + 11
4x - 3x = 3x + 11 - 3x
Simplify :
combine like terms
multiply by 1
combine like terms
x= 11
Hector made a scale drawing of the front of a
building.
• The front of the actual building is in the
shape of a rectangle with a height of
21 feet and a width of 15 feet.
• The height of the building in Hector's
drawing is 3.5 inches, and the width is
2.5 inches.
What scale factor did Hector use in his scale
drawing?
A. 1 inch : 2 feet
B. 1 inch : 4.3 feet
C.1 inch : 6 feet
D. 1 inch : 8.4 feet
Option B is correct. I did the test and it shows 100% I hope it helped!
if an is defined as a geometric sequence, is the sequence 1/an also a geometric sequence? explain your reasoning.
Answer:
Since An/An-1 = r
(1/An)/(1/An-1) = An-1/An = 1/r
so, the ratio between terms is still constant.
Step-by-step explanation:
If an is defined as a geometric sequence, is the sequence 1/an also a
geometric sequence because the ratio between terms remain constant.
What is a geometric sequence and how to find its nth terms?Suppose the initial term of a geometric sequence is a and the term by which we multiply the previous term to get the next term is r
Then the sequence would look like
[tex]a, ar, ar^2, ar^3, \cdots[/tex]
(till the terms to which it is defined)
Thus, the nth term of such sequence would be[tex]T_n = ar^{n-1}[/tex]
Since An/An-1 = r
(1/An)/(1/An-1) = An-1/An = 1/r
Therefore, the ratio between terms is still constant.
Learn more about geometric sequence here:
https://brainly.com/question/2735005
#SPJ2
Please help me with this!!!
Answer:
True
they intersect at only one point
hope it will help you
your day will full of happiness
Answer:
i think true
Step-by-step explanation:
corret because vertical Lines intersect at one point after a certain amount of time
Please help my test is tomorrow thank you god bless you all
Answer:
"(2x - 1) (x - 7)." i think
Step-by-step explanation:
Can you help me with my work don’t send no link
Answer:
A and C!
Step-by-step explanation:
a: for a just move all the terms not containing x to the right side of the equation!
c: divide each term by 4 and simplify!
-
hope this helped <3
Can someone explain this to me? I was absent today and my teacher isn’t helping.
9514 1404 393
Answer:
1. adjacent: ACB, BCD and BCD, DCE. vertical: ACB, DCE and BCD, ECA
2. adjacent: KGJ, JGI and HGM, MGK. vertical: JGI, MGL and HGM, KGJ
3. adjacent. x = 49°
4. adjacent. x = 71°
Step-by-step explanation:
As I noted in the attachment, vertical angles are formed from opposite rays (lines that cross). They share only a vertex. Each of the crossing lines makes up one side of each of the vertical angles. (You can think of each line as being made of opposite rays from the vertex of the angle.)
Adjacent angles share both a vertex and one side. (They do not overlap.) For example, in Figure 2, angles KGM and LGM are not adjacent, even though they share verex G and side GM. This is because they overlap. In that figure, angles KGL and LGM are adjacent angles.
__
1. To identify adjacent angles, choose a ray and make note of the angles on either side of it.
adjacent: {ACE, ACB}, or {BCA, BCD}, or {DCB, DCE}, or {ECD, ECA}
To identify vertical angles, choose two crossing lines and one of the 4 spaces between them. The other vertical angle will be non-adjacent, in the opposite space of the same size.
vertical: {ACB, ECD}, or {ACE, BCD}
__
2. adjacent: any of the pairs {KGJ, JGI}, {JGI, IGH}, {IGH, HGM}, {HGM, MGL}, {MGL, LGK}, {LGK, KGJ}.
Note that these are the nearest, smallest pairs of adjacent angles. This is usually what we are talking about when we refer to adjacent angles. We could add to the list pairs like {IGH, IGK}, {IGM, IGL}.
vertical: (lines IL, HK) {IGH, LGK} or {IGK, LGH}; (lines IL, MJ) {IGM, LGJ} or {IGJ, MGL}; (lines HK, MJ) {HGM, KGJ} or {HGJ, KGM}
__
3. The angles share a ray, so are adjacent. Together, they make up a right angle, so they are complementary.
x = 90° -41°
x = 49°
__
4. The angle share a ray, so are adjacent. Together, they make up a linear angle, so are supplementary.
x = 180° -109°
x = 71°
If $480 is shared in the ratio 4:3:5, the difference between the largest and the smallest share is
Answer:
80
Step-by-step explanation:
........
..
the answer is 80
Which solutions, if any, do the inequalities – 2(c – 4) = -4 and 1d-6>-4
have in common?
Find the area of each triangle . Units are not to scale .
Answer:
area of triangle = 1/2 x b x h
Step-by-step explanation:
16 x 12 = 192
192/2= 96
do the same for all
Answer:
pictures are in order of the questions
Step-by-step explanation:
Solve the system of equations by substitution.
3x+2y=10 y=3x-4
x= y=
Answer:
x=2; y=2
Step-by-step explanation:
3x+2y=10
y=3x-4
We can substitute y from the first equation with the second equation:
3x+2(3x-4)=10
3x+6x-8=10
9x=18
x=2
Now plug this in to any of the equations (i used second equation):
y=3(2)-4
y=6-4
y=2
Check your answers:
y=3x-4
2=3(2)-4
2=6-4
2=2
Number 8 plssssssssss
Answer:
It created a single African nation with many states.
1. In the expression 57, the 7 is the
a. base
b. root
c. multiple
d. exponent
If u can give me all the answers that would be amazing pls
Answer: exponent
Step-by-step explanation:
because 5 is bigger and bolder
The Stone's are driving to a family reunion that is 320.6 miles away. They
stop at a gas station and the map says they have 189.75 miles of the trip
remaining. How many miles have the Stone's driven so far?
DUE TODAY!
Answer:
Step-by-step explanation:
Formula
Driven = Total - what they need to go
Driven = 320.6 - 189.75
Driven = 130.85
If Carlos can read 100 words per minute
Answer:
the answer would be 6,000 words.
Step-by-step explanation:
if there are 60 minutes in an hour and Carlos can read 100 words per minute, all you have to do is multiply 100 by 60 to get 6,000.
Janet is designing a garden in the shape of a trapezoid which is split into three parts: two triangular
flower beds and a rectangular section of grass. Setting up the flower beds costs $3.50 per square
foot. How much will Janet have to spend to set up the flower beds?
PLS HELP
Ans) 70
Tell me if you need steps
(Am 100% sure with this answer)
Wiki
Help I’ll give Brainly est
8*1,000,000+8*1/1,000,000
Answer:
1000000000001 /125000
1000000000001 over 125000
Step-by-step explanation:
be more specific when you post questions..
Which expression is equivalent to
x2 - 8x + 13 = 0
Answer:
for 7 i believe its D
Step-by-step explanation:
Which expression is equal to x^2- y^5?
Starbucks sells 26 drinks every 2 hours. How many drinks would they sell in 12 hours?
Answer:
156 Drinks
Step-by-step explanation:
Answer:
No. of drinks sell by them in an hour=26/2=13
So,No. of drinks sell by them in 12 hours=
[tex]12 \times 13 = 156[/tex]
Hence, They sell 156 drinks in 12 Hours and 312 drinks in a day.
Gotta love these Starbucks lover, they'll tell you I'm insaneWrite the following quadratic expression in standard form: ( 2 x − 1 ) ( 3 x − 1 )
Answer:
6[tex]x^{2}[/tex] - 5[tex]x[/tex] + 1
Step-by-step explanation:
Standard form is: [tex]ax^{2} +bx+x[/tex]
To reach that you have to distribute:
(2x - 1) (3x - 1)
2x (3x - 1) = 6[tex]x^{2}[/tex] - 2[tex]x[/tex]
-1 (3x - 1) = -3[tex]x[/tex] + 1
Combine like terms:
6[tex]x^{2}[/tex] - 5[tex]x[/tex] + 1
7
A bookstore is selling books for $10 each. Which graph shows the relationship between the number of books, 2, the store sold and the total amount of money, y.
paid from the book sales?
BOOK SALES
Total Amount Paid
(dollars)
0 1 2 3 4 5
Number of Books
Sold
BOOK SALES
50
Total Amount Paid
(siepop)
20
10
0 1 2 3 4 5
Number of Books
Answer:
can you put it for clear in a sentice
Step-by-step explanation:
- For English class, George must read 168 pages in 7 days. What is the unit rate of
pages to days?
Answer:
168 pages/7 days = 24 pages/1 day
Hope that helps, dude.