Answers
Answer: The answer you selected in the picture is correct.
Step-by-step explanation:
There will be no heat transfer from the nickel to the water in the glass since heat transfer is purely a function of temperature difference.
there will be no transfer of heat from the nickel to the water in the glass
Related Questions
come get a brainliest
Answers
Answer:
the answer of first one is19
the answer of second is14
What is the height, x, of the equilateral triangle shown?
Answers
Answer:
C. 10in
Step-by-step explanation:
[tex]\frac{sinA}{a} = \frac{sinB}{b}[/tex]
[tex]\frac{sin60}{10} = \frac{sin60}{x}[/tex]
[tex]x[/tex]sin60 = 10 × sin60
[tex]x[/tex]sin60 = [tex]5\sqrt{3}[/tex]
[tex]x[/tex] = [tex]\frac{5\sqrt{3} }{sin60}[/tex]
[tex]x[/tex] = 10in
∆DEF is similar to ∆ABC and the scale factor from ∆ABC to ∆DEF is 2. In ∆ABC, the largest angle measures 82º. Which measurements below could represent the largest angle in ∆DEF? Select all that apply.
Answers
Answer:
B
Step-by-step explanation:
the scale factor of 2 means the sides of Δ DEF are twice those of Δ ABC.
However, corresponding angles remain congruent , then
largest angle in Δ DEF is also 82°
Bryan brought his series set of Rowan and the Dragon Quest to a secondhand store to sell. He was paid cash for all 5 books in the set. Before he left, Bryan used $29.75 of his earnings to purchase a used e-reader. He had $2.75 remaining. What was the value of each book in the set?
Answers
The value of each book in the set will be $6.5 when he sold his books to the second hand store.
What is profit and loss?When we sell any product above its cost price then there will be profit if the selling price is less then the cost price then there will be loss on the product.
here the total cost of the books sold will be given as:-
[tex]\$29.75+ \$2.75 =\$ 32.5[/tex]
The cost of the each book will be
[tex]=\dfrac{32.5}{5}=\$6.5[/tex]
Hence the value of each book in the set will be $6.5 when he sold his books to the second hand store.
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Answer:
$6.50
Step-by-step explanation:
A store has an item listed for $48.95. On Saturday they are having a 20% off sale where they give a 20% discount to all items in the store. What is the sale price of this item on Saturday? Round appropriately.
(A) None of these
(B) $58.74
(C) $9.79
(D) $28.95
(E) $39.16
Answers
Answer:
(E) $39.16
Step-by-step explanation:
listed price = $48.95
discounted price on saturday = $48.95 x 80% = $39.16
Srekar needs to increase the length, width, and height of the prism below by 2 inches. The original prism has a length of 3 inches, a width of 2 inches, and a height of 1 inch.
A prism has a length of 3, height of 1, and width of 2.
Which statements about the new prism are true? Select three correct answers.
The new prism will have a length of 5 because 3 + 2 = 5.
The new prism will have a width of 4 because 2 + 2 = 4.
The new prism will have a height of 2 because 1 times 2 = 2.
The volume will increase by 6 because 2 times 3 = 6 and each of the 3 dimensions is increased by 2.
Srekar could increase the volume by the same amount by just adding 6 to the height instead of 2 to each side.
The volume of the new prism will be 20 times 3 = 60 because there will be 20 cubes in each layer and the height will be 3 so there will be 3 layers of 20 cubes each.
Answers
The statement first, statement second, and statement sixth are true.
What is volume?It is defined as a three-dimensional space enclosed by an object or thing.
We have:
The original prism has a length of 3 inches, a width of 2 inches, and a height of 1 inches.
The new length = 3+2 = 5 inches
The new width = 2+2 = 4 inches
The new height = 1+2 = 3 inches
The volume of the old prism = 3×2×1 = 6 cubic inches
The volume of the new prism = 5×4×3 = 60 cubic inches
Srekar, could increase the volume by the same amount by just adding 6 to the height instead of 2 to each side is false becasue:
Volume = 3×2×(1+6) = 42 cubic inches
The volume of the new prism will be 20 times 3 = 60 because there will be 20 cubes in each layer and the height will be 3 so there will be 3 layers of 20 cubes each is true.
Thus, the statement first, statement second, and statement sixth are true.
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what’s the better deal? pls help
Answers
Answer:
the equations they're equal
Step-by-step explanation:
3.75 divided by 5 = 0.75
7.50 divided by 10 = 0.75
12.00 divided by 16 = 0.75
what is x in 2(1-5x)+4=-8
Answers
Answer:
Fraction Form: x = 7/5
Decimal Form: x = 1.4
Mixed Number Form: x = 1 1/2
Step-by-step explanation:
Step-by-Step Explanation:
2(1 - 5x) + 4 = -8
2 * 1 - 2 * 5x + 4 = -8
2 - 10x + 4 = -8
2 - 10x = -8 - 4
-10x = -8 - 4 - 2
-10x = -14
10x = 14
x = 14/10
=> x = 7/5
Therefore, x = 7/5
What is the range of f(x)=5/x^4
Answers
Answer:
(0,∞) , {y|y>0}
Step-by-step explanation:
A pie shop sells 32 apple pies, 33 pumpkin pie,20 cherry pies, and 15 chocolate pies.What percentage of pies were sold were apples or cherry
Answers
The percentage of pies sold that were apples or cherry is 52%
How to determine the percentage of apples or cherry?The given parameters are:
Apple = 32Pumpkin = 33Cherry = 20Chocolate = 15The total number of pies is:
Total = 32 + 33 + 20 + 15
Evaluate
Total = 100
The percentage of apples or cherry is calculated as:
Percentage = (Apple + Cherry)/Total
So, we have:
Percentage = (32 + 20)/100
Evaluate the quotient
Percentage = 0.52
Express as percentage
Percentage = 52%
Hence, the percentage of pies sold that were apples or cherry is 52%
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which figure is a convex polygon?
Answers
Answer:
A.
Step-by-step explanation:
Convex polygon
A polygon is a figure that has no curved lines. A convex polygons has no "caves."
In this instance, answer choices B, C, and D all have curved lines which means that they aren't polygons. Additionally, as an example of a concave polygon, answer choice D creates a sort of "cave."
Therefore, answer choice A is a convex polygon.
Hope this helps!
Use the data set to answer the question. PLS NEED HELP!! No files or links please! :))
{122,132,155,198,213,225,261,280}
What is the mean absolute deviation for the data set?
Enter your answer as a number rounded to the nearest tenth, like this: 42.5
Answers
46.5
[tex]\bold{EXPLANATIONS:}[/tex]
what is the measure of angle x
Answers
Answer:
Step-by-step explanation:
56 + 41 + x = 180
97 + x = 180
x = 83
Three people, Adam, Becky and Charley, each lie 1/3 of the time at random, otherwise they tell the truth. A fair coin is flipped, and they all see it. They all say it is heads. What is the probability the coin was actually tails?
Answers
[tex] \frac{1}{3} [/tex]
to find:the probability of the coin.
solution:lie:[tex]( \frac{1}{3} ) \times ( \frac{1}{3}) \times ( \frac{1}{3} )[/tex]
[tex] = \frac{1}{27} [/tex]
there's 1/27 chance of them to lie.
truth:[tex]( \frac{2}{3} ) \times ( \frac{2}{3} ) \times ( \frac{2}{3} )[/tex]
[tex] = \frac{8}{27} [/tex]
there's 8/27 chance that all of them told the truth.
probability:[tex]( \frac{8}{27} ) \div (( \frac{8}{27} ) + ( \frac{1}{27} ))[/tex]
[tex] = \frac{8}{9} [/tex]
therefore, between those two chances, it's an 8/9 chance it's actually Heads.
3. a Paul is thinking of a number that is greater than 10 and less than 20. What is the probability
that the number is not a prime number? Express your answer as a fraction only.
Answers
The probability that the number is not a prime number is 5/9.
What is Probability?Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.
The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.
The degree to which something is likely to happen is basically what probability means.
Given:
Paul is thinking of a number that is greater than 10 and less than 20.
So, the prime number between 10 and 20 are 11, 13, 17, 19.
So, the probability that the number is not a prime number
= ( 9- 4)/ 9
= 5/9
Hence, the probability that the number is not a prime number is 5/9.
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urgent***
Determine the zeros, sign and extreme values of the function y = -x³ + 8x²-16x.
Answers
Step-by-step explanation:
To find extreme values, take the first derivative
[tex]y = - 3 {x}^{2} + 16x - 16[/tex]
Solve the equation for x.
[tex]x = \frac{ - 16 + \sqrt{256 - 192} }{ - 6} [/tex]
or
[tex]x = \frac{ - 16 - \sqrt{256 - 192} }{ - 6} [/tex]
[tex]x = \frac{ - 16 + \sqrt{64} }{ - 6} [/tex]
or
[tex]x = \frac{ - 16 - \sqrt{64} }{ - 6} [/tex]
We then get
[tex]x = \frac{4}{3} [/tex]
or
[tex]x = 4[/tex]
So our extreme values occur at x=4/3 and x=4
Zeroes:
[tex] - {x}^{3} + 8 {x}^{2} - 16x[/tex]
[tex] - x( {x}^{2} - 8x + 16)[/tex]
[tex] - x(x - 4) {}^{2} [/tex]
[tex] - x = 0[/tex]
[tex](x - 4) {}^{2} = 0[/tex]
[tex]x = 4[/tex]
So we have a double root at 4, and a root of 0. We have two positive roots and one non negative root
End behavior:
Since we have a negative leading coefficient and a odd degree, as x becomes more positive, y will become negative and as x becomes more negative, y will become positive.
Draw a HF on the diagram that is parallel to AE and perpendicular to GF.
Answers
The line HF that is perpendicular to GF and parallel to AE is presented in the image uploaded.
What is perpendicular line?A perpendicular line is a line that intersects another line at 90 degrees or normal to the line.
What is a parallel line?A parallel line is a line that never intersect with another. In this type of line, the angle between the two parallel lines is zero.
Thus, the line HF that is perpendicular to GF and parallel to AE is presented in the image uploaded.
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A fast food chain surveyed a random
sample of students to determine what pizza
they prefer. Cheese pizza was preferred
by 40 students. Pepperoni pizza was
preferred by 28 students. Based on the
results, how many of the 340 students can
be expected to prefer cheese pizza?
Answers
Answer:
200 students
Step-by-step explanation:
If 40/68 students prefer cheese pizza, we can take the proportion and carry it over by doing 340/68, which is 5.
5 x 40 = 200.
Answer please please
Answers
Answer: the answer is b which is the second choice . as the second one is greater than the first one . ( <)
Step-by-step explanation: HOPE IT HELPS YOU .PLEASE GIVE BRAINLIEST . THANKS .
ill give 30 points for the answer bro: In the figure, c || d. What are the measures of ∠1 and ∠2?
Answers
Answer:
angle 1 is 15, angle 2 is 75
Step-by-step explanation:
angles 1/2/3/4 is the same as 5/75 degrees/7/8 respectively
Help me find the circumference
Answers
Explanation:
Circumference Formula: 2πr
2 • 3.14 • 3.3 = 20.724
Answer:
The formula to get the circumference of a circle is [tex]C=2*\pi * r[/tex]. We can then input the value and we get that [tex]C=2*\pi*3.3[/tex] and as we solve it more the final answer that we get is [tex]C=20.735[/tex].
Hope this helps! Let me know if you have any questions
(3^4/3^n)=3^6 what value of N makes equation true
Answers
Answer:
n = - 2
Step-by-step explanation:
[tex] \huge\bigg (\frac{ {3}^{4} }{ {3}^{n} } \bigg) = {3}^{6}[/tex][tex]\implies\huge 3^{4-n} = 3^6[/tex]Bases are equal, so exponents will also be equal.[tex]\implies\huge 4 - n = 6[/tex][tex]\implies\huge - n = 6 - 4[/tex][tex]\implies\huge - n = 2[/tex][tex]\implies\huge n = - 2[/tex]20points please help
Answers
Answer:
I would say B is the answer! Sorry if I was late to this!
Step-by-step explanation:
Can I get a Brainliest please?? :)
1. Find the derivative of [tex]x^{2}-2[/tex] at [tex]$x=10$.[/tex]
Answers
Answer:
20
Step-by-step explanation:
d/dx ( x² - 2 )
= d/dx ( x² ) - d/dx ( 2 )
= 2x - 0
= 2x
= 2 * 10
= 20
a term salinity refers to the amount of salt in water. the salinity of earths oceans is about 525 grams of dissolved salt for evert 15 kilograms of water. find the grams of salt for every gram of ocean water
Answers
Answer:
0.035 grams
Step-by-step explanation:
Grams of salt per gram of ocean water
Divide the amount of salt by amount of water525 g / 15 kg525 g / 15000 g [∴1 kg = 1000 g]0.035 / 1For every gram of ocean water, there is 0.035 grams of salt dissolved in it.
The salinity of earths oceans,
→ a = 525 g
Amount of water for the salinity,
→ b = 15 kg
→ b = 15 × 1000
→ [ b = 15000 g ]
Then find the grams of salt for every gram of ocean water,
→ a ÷ b
→ 525 ÷ 15000
→ 0.035 g
Hence, answer is 0.035 grams of salt.
Find the value of x.
86
34°
X
x = [?]°
X
Answers
Answer:
in a triangle the sum of angles is 180
so 180-(86+34)=60
Area of triangle Question 4
Answers
Answer:
3sq units
Step-by-step explanation:
bxh = 2x3=6
6/2=3
Three machines produce the same parts.
Machine A produces 10% defective parts.
Machine B produces 5% defective parts.
Machine C produces 5% defective parts.
Suppose each machine produces 1/3 of the total production. A part is selected at random, and it is found to be defective. What is the probability that it was produced by machine B?
A) 19/56
B) 17/30
C) 1/2
D) 1/4
Answers
Answer:
20
Step-by-step explanation:
just add the 13 to A and B
Determine the truth value of each statement based on the expression.
6x 2 - 2x - 14y + 3x
Answers
By analyzing the polynomial we have the following conclusions about the five propositions:
1) True
2) True
3) False
4) False
5) True
How to infer characteristics of a polynomial
In this question we have a second order polynomial with two variables (x, y) and we need to determine the truth value of each proposition by applying concepts related to polynomials.:
1) There are four terms - A term is an additive component of the polynomial. Thus, the polynomial has four terms. (True)
2) 6 · x² and 3 · x are like terms - Two components are like terms if they have the same variable. Thus, 6 · x² and 3 · x are like terms. (True)
3) The coefficient on y is 14 - A coefficient is a constant that accompanies a variable. The constant of y is -14. (False)
4) Simplified, the expression is 6 · x² + 5 · x - 14 · y - The simplification of the polynomial is done by applying algebraic properties. The simplified form is 6 · x² + x - 14 · y. (False)
5) The commutative property allows the expression to be written as 6 · x² - 14 · y + 3 · x - 2 · x - Commutative property indicates that the order of components of the polynomial can be changed without changing the result of the entire polynomial. (True)
Remark
The statement is incomplete and incorrectly formatted. Correct statement is shown below:
Determine the truth value of each statement based on the expression 6 · x² - 2 · x - 14 · y + 3 · x.
1) There are four terms.
2) 6 · x² and 3 · x are like terms.
3) The coefficient on y is 14.
4) Simplified, the expression is 6 · x² + 5 · x - 14 · y.
5) The commutative property allows the expression to be written as 6 · x² - 14 · y + 3 · x - 2 · x.
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Answer:
answer is
Step-by-step explanation:
TRUE
FALSE
FALSE
FALSE
TRUE
150 books are divided into 3 stacks. The 1st one has 30 more than the 2nd stack, 2nd stack has twice as many books in the 3rd stack. How many books are there in 3rd stack? (N represents the number of books in the 3rd stack.)
Answers
======================================================
Explanation:
N = number of books in the 3rd stack2N = number of books in the 2nd stack, since there are twice as many books here.2N+30 = add on 30 to the previous amount to get the number of books in the first stackIn other words,
1st stack = 2N+302nd stack = 2N3rd stack = NN is some positive whole number.
Add up all those expressions and set the sum equal to the 150 books total. Solve for N.
(1st stack) + (2nd stack) + (3rd stack) = total
(2N+30) + (2N) + (N) = 150
(2N+2N+N) + 30 = 150
5N + 30 = 150
5N = 150-30
5N = 120
N = 120/5
N = 24 which is the number of books in the 3rd stack
2N = 2*24 = 48 is the number of books in the 2nd stack.
2N+30 = 2*24+30 = 48+30 = 78 books in the 1st stack
Check:
1st+2nd+3rd = 78+48+24 = 150
The answer is confirmed.
