Answer:
R
Step-by-step explanation:
1/2(2r+4)-1/4(16-8)
r+2 - 1/4(8)
r+2-2
r
Most thermal conductors are made of which material?
plastic
glass
rubber
metal
Most thermal conductors are made up of metal material.
We have to determine, most thermal conductors are made of which material?
According to the question,
It is one of the three concepts by which heat and energy can be transferred from one place to the other within a material or from one material to another.
Conduction occurs by direct contact whereas Convection occurs by movement or flow of heat.
Radiation on the other hand occurs with the help of electromagnetic waves.
Conduction mostly occurs in metals and the conductivity of metal is different from one another.
When it comes to the best metal for thermal conductivity, ideally it is Silver but Copper is used instead.
The reason for it is that Silver is too expensive and is infeasible to use. Copper, on the other hand, is available in abundance, is affordable, and can be used in any application.
Hence, Most thermal conductors are made up of metal material.
For more details refer to the link given below.
https://brainly.com/question/1033537
A phone company offers two monthly plans. Plan A costs $20 plus an additional $0.07 for each minute of calls. Plan B costs $16 plus an additional $0.11 for each minute of calls.
Question A) For what amount of calling do the two plans cost the same?
Question B)What is the cost when the two plans cost the same?
which expression means to subtract 8 from 64 then divide by 4
Answer:
(64-8) +4
Step-by-step explanation:
hope this helps :))
1.) An elephant's heart beats 75 times in 3 minutes.
It will beat 325 times in how many minutes?
I
Answer: 13 minutes
Step-by-step explanation: common sence every minute the heart beats 25 times so 25 times 3 equals 75 so if that s true then 25 times 13 equals 325 ;)
Answer:
12.99 - 13 min.Step-by-step explanation:
It is 12.99 - 13 min. because 325 divided by 75
equals 4.33 and so on. If you times 4.33 by 3
you get 12.99, if your teacher said to round it
then do 13 Min. Hope this helps! <3
g(x) = 4x^2 – 16x +3
Answer:
https://brainly.com/question/18832765
Step-by-step explanation:
PLZ need serious HELP! No fake or dumb answers
Find the intersection point for the following linear functions.
f(x) = 2x + 3
g(x) = -4x − 27
A. (5,-7)
B. (5,13)
C. (-5,-10)
D. (-5,-7)
Answer:
D) (-5, - 7)
Step-by-step explanation:
Because both lines intersect, they must share a point (have same x and y coordinates).
[tex]2x + 3 = - 4x - 27[/tex]
[tex]2x = - 4x - 30[/tex]
[tex]6x = - 30[/tex]
[tex]x = - 5[/tex]
Substite x for - 5 in any of the equations to find the y coordinate.
[tex]y = 2( - 5) + 3 [/tex]
[tex]y = - 10 + 3[/tex]
[tex]y = - 7[/tex]
The x coordinate for the intersection point is - 5 and the y coordinate is - 7. The intersection point is (-5, - 7)
An elevator goes up 12 floors. I need help with this to I’m confused.
Answer:
Because, the situation is going up, the integer is +12 or 12.
identify the slope of the line for the equation 1/6 x + 1/4
Answer:
y = 1/6x - 8/3
Step-by-step explanation:
The equation of a line in slope-intercept form is.
y = mx + b
where m represents the slope and b, the y-intercept.
Rearrange y + 2 = 1/6 (x - 4) into this form
distribute bracket and simplify.
y + 2 = 1/6x - 2/3
⇒ y = 1/6x - 2/3 - 2
⇒ y = 1/6x - 8/3 ← in slope-intercept form
Write an algebraic expression for the word expression.
the sum of 3 and a number x
The expression is .
Answer:
3 + x
Step-by-step explanation:
Sum means to add, so you would just add 3 and x (since they haven't given an actual number and only a variable).
The sum of the number 3 and the variable x will be (x + 3).
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
In the linear expression, the degree of the variable is one.
The sum of 3 and a number x.
Then the expression will be
⇒ 3 + x
The number 3 is a constant number and the term x is a variable.
The expression (x + 3) is a linear expression because the degree of the expression is one.
The number of the variable is one, then the expression is linear expression of one variable.
Thus, the sum of the number 3 and the variable x will be (x + 3).
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ2
If y = 32 when x = 8, find y when x = 30.
Answer:
The answer would be y = 120.
Step-by-step explanation:
If x is always 1/4 of y, then if x equals 30, y would be 4 times the amount of x. I hope this helps you! :)
Carnival M charges an entrance fee of $5.00 and $0.65 per ticket for the rides. Carnival P
charges an entrance fee of $10.00 and $0.45 per ticket for the rides. How many tickets must
be purchased in order for the total cost at Carnival M and Carnival P to be the same?
A nursery owner buys 9 panes of glass to fix some damage to his greenhouse. The 9 panes cost $22.05 Unfortunately, he breaks 4 more panes while repairing the damage. What is the cost of another 4 panes of glass?
Answer: $9.80
Step-by-step explanation:22.05/9=2.45x4= 9.80
Answer:
$4.30
Step-by-step explanation:
Two panes of glass cost $4.30.
Explanation
First find the cost of one pane of glass (the "unit cost")
7 panes of glass cost
$
15.05
, so one pane of glass costs
15.05
÷7∩
$2.15 ← cost of one pane of glass
Then use that answer to find the cost of two panes of glass
If one pane of glass costs $2.15, then 2 panes cost 2× $2.15 $4.30 ← cost of two panes of glass
Answer:
Two panes of glass cost $4.30.
Find the exact rotation in revolutions per minute with the angular speed below:
Answer:
The exact rotation in revolutions per minute is 1.125 revolutions per minute
[tex]\omega = 1.125 \ \dfrac{Revolution}{minute}[/tex]
Step-by-step explanation:
The given angular velocity is expressed as follows;
[tex]\omega = 135 \cdot \pi \ \dfrac{rad}{h}[/tex]
Therefore, we have;
[tex]\omega = \dfrac{135 }{60} \cdot \pi \ \dfrac{rad}{minute} = \dfrac{9}{4} \cdot \pi \ \dfrac{rad}{minute} = 2.25 \cdot \pi \ \dfrac{rad}{minute}[/tex]
One (1) revolution = 2·π radian
Therefore;
π radian = 1/2 revolution
2.25·π radian = 2.25 × 1/2 revolution = 1.125 revolution
Which gives;
[tex]2.25 \cdot \pi \cdot \dfrac{rad}{minute} = 1.125 \ \dfrac{Revolution}{minute}[/tex]
The exact rotations in revolutions per minute is 1.125 revolutions per minute.
Manny and Zack are hosting events that are catered by the same company. Manny plans to have 66 adults and 27 children attend, so the total projected cost of his meals is $3,651. Zack has 77 adults and 43 children on his guest list, so he will pay the caterer $4,409. How much does the caterer charge for each meal?
Answer:
The caterer charged $50 for an adult's meal and $13 for a child's meal
Step-by-step explanation:
Let the cost of an adult meal be $x
and the cost of a child meal be $y
From the question,
Manny plans to have 66 adults and 27 children and the total cost of his meals is $3,651.
We can write that
66x + 27y = 3651 ...... (1)
Also, from the question,
Zack has 77 adults and 43 children and the total cost he will pay the caterer is $4,409.
We can also write that
77x + 43y = 4409 ...... (2)
Multiply equation (1) by 7, so that we get
462x + 189y = 25557 ...... (3)
Multiply equation (2) by 6, so that
462x + 258y = 26454 ...... (4)
Now, subtract equation (3) from equation (4), so that
69y = 897
∴ y = 897/69
y = 13
Put the value of y into equation (1) to get x
66x + 27y = 3651
∴ 66x + 27(13) = 3651
66x + 351 = 3651
66x = 3651 - 351
66x = 3300
x = 3300/66
x = 50
Therefore,
The cost of an adult's meal is $50
and the cost of a child's meal is $13
Hence, the caterer charged $50 for an adult's meal and $13 for a child's meal.
My question is, on Sunday, 77,098 fans attended a New York Jets game. The same day, 3,397 more fans attended a New York Giants game than attended the Jets game. Altogether, how many fans attended the games? Round each number to the nearest thousand to find an estimate of how many fans attended the games.
Answer:
Total number of fan = 80,495
Step-by-step explanation:
Given:
Number of fans attended = 77,098
Additional number of fans attended = 3,397
Find:
Total number of fan
Computation:
Total number of fan = Number of fans attended + Additional number of fans attended
Total number of fan = 77,098 + 3,397
Total number of fan = 80,495
Determine the equation with the given graph.
Answer: C
Step-by-step explanation:
I used a graphing calculator to find the answer to your problem.
do i use mean and standard deviation or median and interquartile range?
Answer: median and interquartile range
Step-by-step explanation:
I’ll mark brainliest
Which of the following are “high energy” bonds that contain such a large amount of stored chemical energy that the molecule they are part of can burn? Select all that apply
A) C-N
B) C-C
C) C-O
D) C-H
Answer:
cn
Step-by-step explanation:
jjbo;
Can someone tell me what means this formula?, i dont know what means this parentheses whitout a division :(
Answer:
Hello:
Step-by-step explanation:
It means 'choose'. I would advise you to search up 'combinatorics' on YT and learn from there because I don't think i can explain it as well as them on them.
ASAP!!! if my grade is a 91% and i get a 74% what will my grade be
Answer:
70
Step-by-step explanation:
If the point (x, y) is on the x-axis, which of the following must be true?
x = 0
y=0
-66 = -9n + 16n + 4
Solve these step by step pls
Answer:
n= -10
Step-by-step explanation:
-66=7n+4
-7n=4+66
-7n=70
n=70/-7
n= -10
Answer:
n = -10
Step-by-step explanation:
-66 = -9n + 16n + 4
1. I started by subtracting 4 on both sides of the equation this gives you -70 = -9n + 16n
2. I then combined the like terms 16n and -9n on the right side of the equation. We do this by subtracting 9n from 16n. Which gives you -70 = 7n
3. We then divide both sides by 7 in order to get -10 = n
This gives you your final answer of n = -10
Which relation is a function of x?
Answer:
first one
Step-by-step explanation:
a number cant be repeated on the Y axis
Answer:
Table D
Step-by-step explanation:
Water can exist in three states:
solid Ice, liquid water, and
gaseous water vapor. It takes a
certain amount of heat before
water can change state. Use the
following information to sketch the
graph of the function representing
the temperature of water as a
function of the amount of total
heat added in Joules (1). Explain
why this situation involves
piecewise function.
Answer:
The graph illustrates the process of changing ice at –50°C to steam at 150°C.
At the beginning of the month, Shiloh made 65 servings of trail mix. By the end of the month, she had 48 servings of trail mix left. Which equation could be used to find x, the number of servings of trail mix that had been eaten during the month?
Answer:
c
Step-by-step explanation:
Answer:
The answer is 65 - x = 48
Step-by-step explanation:
Write a conditional statement for Marla has a piano lesson every Tuesday.
a. If it is Tuesday, Marla has a piano lesson.
b. If Marla has a piano lesson, then it is Tuesday.
c. If Marla doesn't have a piano lesson, then it is not Tuesday.
d. If it isn't Tuesday, then Maria isn't playing the piano.
I need help! Plz someone help me
Answer:
B
Step-by-step explanation:
If you subtract 13 from my number and multiply the difference by -2 , the result is -44." What is 's number
Answer:
n = 35
Step-by-step explanation:
n - 13 x -2 = -44
distribute:
(n x -2) - (13 x -2) = -44
-2n - (-26) = -44
two negatives in front of a number makes it a positive number
so rewrite -2n + 26 = -44
-2n = -44 -26
-2n = -70
n = [tex]\frac{-70}{-2}[/tex]
n = 35
calc check (35 - 13) x -2 = 22 x (-2) = -44
2 of 5
Jacob spent 6 hours skiing and snowboarding. He skied for 2 hours 45 minutes.
How long did he spend snowboarding?
hours
minutes
A nutrition label states that there are 36 grams of carbohydrates in each serving. This accounts for 12% of the daily value. How many grams of carbohydrates are recommended per day?
Answer:
300 grams of carbohydrates are recommended per day
Step-by-step explanation:
First, convert 12% daily value into decimal: 12/100=0.12
Since this is a word problem and we have 36 grams and 12% daily value, we should make an equation first.
We are looking for how many grams of carbs should be taken a day, so lets use x as the unknown. We need to find x!
0.12 x= 36 g
Now: divide 36 grams by 0.12
x= 36g/0.12= 300g
x= 300 grams of carbohydrates are recommended per day.
