Answer:
420,000 J/Kg
Step-by-step explanation:
energy= temperature change* mass* specific heat capacity
energy= 20*5*4200
energy= 420,000
Sarah has 4 cousins. Melanie has 7 times as many cousins as Sarah. How many Cousins dose Melanie have?
Answer:
Melanie has 28 cousins.
Step-by-step explanation:
4 x 7 = 28
I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!
What are the functions?
Answer:
A,and C!!Always use the line test. draw lines through the lines in the graph and see if any line, lines up. (It should never line up if it's a function.E is a function because none of the dots are lined up.D is not a function because it has 2 dots that makes a line (2 dots are lined up) and B is intersecting
Write as a single fraction in its simplest form
(2x-1/3) - (2/x+1)
With steps plz :))
[tex](2x - \frac{1}{3} ) - ( \frac{2}{x} + 1)[/tex]
[tex]2x - \frac{1}{3} - \frac{2}{x} + 1[/tex]
[tex](2x - \frac{2}{x} ) + ( - \frac{1}{3} + 1)[/tex]
[tex] (\frac{2 {x}^{2} }{x} - \frac{2}{x} ) + ( \frac{ - 1}{3} + \frac{3}{3} )[/tex]
[tex] \frac{2 {x}^{2} - 2 }{x} + \frac{ - 2}{3} [/tex]
We want to write the given expression as a single fraction. We will get the fraction:
[tex]\frac{6*x^2 - 4*x - 6}{3*x}[/tex]
Rewriting the expression.
So we start with the expression:
[tex](2*x - \frac{1}{3}) - (\frac{2}{x} + 1)[/tex]
First, let's rewrite each of these parenthesis as fractions, we need to have the same denominator in all the terms, then in the first one we can multiply and divide by 3 (and in the second one we can do the same but with x) so we get:
[tex](\frac{3}{3} *2*x - \frac{1}{3}) - (\frac{2}{x} + 1*\frac{x}{x} )\\\\(\frac{6*x}{3} - \frac{1}{3}) - (\frac{2}{x} + \frac{x}{x} )\\\\\frac{6*x - 1}{3} - \frac{2 + x}{x}[/tex]
Now we must multiply and divide the left term by x, and the right term by 3, so we get:
[tex]\frac{x}{x} \frac{6*x - 1}{3} - \frac{2 + x}{x}*\frac{3}{3} \\\\\frac{6*x^2 - x}{3*x} - \frac{6 + 3x}{3*x} = \frac{6*x^2 - x - 3x - 6}{3*x}\\\\\frac{6*x^2 - 4*x - 6}{3*x}[/tex]
This is the fraction in its simplest form.
If you want to learn more about fractions you can read:
https://brainly.com/question/11562149
For the given piecewise function, evaluate for the specified value of x
Answer:
-1
Step-by-step explanation:
For piecewise functions, you should look at the range of values and see where the number you are looking for falls. In this case, -1 is included in the domain of the middle equation, so you will be using f(x) = x
Then, all you have to do is plug in -1 for x, so f(-1) = -1
A line has a slope of -3/4 and passes through the point (-5, 4). Which is the equation of the line? A.y=-3/4x+1/4 B.y=-3/4x+4 C.y=-3/4x-2 D.y=-3/4x-1/4
Answer:
A
Step-by-step explanation:
y-4= -3/4(x+5)
-3/4x-15/4=y-4
-3/4x+1/4=y
Is it a function ?
{(0,1), (2,4), (0,-2), (9,10)}
Toms house cost 205000 in the year 2015 in 2021 he sold his house for 370000 what was the percentage of change in the price of the house
9514 1404 393
Answer:
80.5%
Step-by-step explanation:
The percentage change can be found from ...
percent change = (change)/(original value) × 100%
= (370000-205000)/205000 × 100%
= 165/205 × 100%
≈ 80.49%
The change in the price of the house was about 80.5%.
Find the Slope & Y-intercept
2x 5y = 18
Answer:
the slope is -2 and the y intercept is 18
Theo buys a slice of pizza and a bottle of water for $3. Ralph buys 3 slices of pizza and 2 bottles of water for $8. How much does a slice of pizza and a bottle of water cost
Answer:
2$ per slice of pizza
1$ per bottle of water
Numerical problems:
a.
Convert 300 K into the celsius scale.
b
Convert 220 °C into kelvin scale.
Convert 30 °C into fahrenheit scale.
d. Convert 260 °F into °C.
Answers
8. a. 27 °C
b. 493 K
c. 86 °F
d. 12.67 °C
A pack of pencils contain a dozen pencils.450 such packs were put in a carton. If there are 25 such cartons, find the total number of pencils.
Answer:
135000
Step-by-step explanation:
Given: A pack of pencils contain a dozen pencils. 450 such packs were put in a carton. There are 25 such cartons.
To find: total number of pencils
Solution:
Total number of pencils in a pack = 1 dozen = 12
Total number of packs = 450
Total number of cartons = 25
Total number of pencils = 12 × 450 × 25 = 135000
So, total number of pencils is 135000.
The art club has 12 members. Each member is required to buy a t-shirt that costs $12.50. On the 3rd day of the month, 9 members paid for their shirts. The remaining members paid for their shirts on the 4th day of the month. How much money was collected on the 4th day of the month?
Answer:
$37.50
Step-by-step explanation:
MAP TESTING HELP
Find the amount of simple interest that $400 would earn at 8% per year by the end
of 3 1/2 years.
A. $96
B. $11, 200
C. $3200
D. $112
O E. $32
Answer:
E is the answer
Step-by-step explanation:
hope it is helpful
polynomials! i don't understand, if you know how to do this can you give a brief explanation? <3
Answer:
Step-by-step explanation:
(C). 4a³ + 24ab² - 25b³
HELP MEEEEE PLEASEEEE
Answer:
0.0036 i think this is the answer. I don't really know.
A client pays for a moving company to move 25 boxes. If the moving company charges $12.50 per box and a base fee of $199.95 to each client, what is the total amount the client pays?
Answer:
512.45
Step-by-step explanation:
312+199.95=512.45
Find the arithmetic mean between 35 and -9?
Please help me!!!!!!!!!
What is the relationship between 55/44
Answer:
11 because 55 devided by 11 is makes 5 and 44 decided by 11 is 4
Write 3729 correct to the nearest hundred.
Answer:
3700 is the result of rounding 3729 to the nearest 100.Step-by-step explanation:
Answer:
3700
Step-by-step explanation:
3729
the 7 hundredth and 2 is before so you go downwards and it 3700
h e l p w i l l g i v e b r a i n l i e s t i f c o r r e c t !!
Answer:
Its C
Step-by-step explanation:
The number of hits on a website doubles every month. About 10,600 people visited the website during May. The expression 10,600 · 2t models the number of visitors after t months. Evaluate the expression for t = 0 and t = −2. Describe what each value of the expression represents in the situation.
A. 10,600; 2650; About 10,600 people visited the website in March. About 2,650 people visited the website in May.
B. 10,600; 2650; About 10,600 people visited the website in May. About 2,650 people visited the website in March.
Answer:
The correct option is;
B. 10,600; 2,650; About 10,600 people visited the website in May. About 2,650 people visited the website in March
Step-by-step explanation:
The given parameters are;
The number of people that visit the website every month = 2 × The number of people that visited the website the previous month
The number of people that visit the website during May ≈ 10,600
The number of visitors of the website are given by the expression 10,600 × [tex]2^t[/tex]
For t = 0, we have;
The number of visitors of the website = 10,600 × 2⁰ = 10,600
For t = -2, we have;
The number of visitors of the website = 10,600 × 2⁻² = 2,650
Therefore, the website had about 10,650 visitors in May and about 2,650 visitors in 2 months earlier in March.
A piece of land is 8 1/2 miles wide. It is 4 7/8 times as long as it is wide. How long is the piece of land.
Answer:
[tex]Length = 41\frac{7}{16}[/tex]
Step-by-step explanation:
Given
[tex]Width = 8\frac{1}{2}[/tex]
[tex]Length = 4\frac{7}{8}[/tex] times as long as the width
Required
Determine the length
To do this, we simply multiply the length by [tex]4\frac{7}{8}[/tex]
So, we have:
[tex]Length = 4\frac{7}{8} * Width[/tex]
Substitute [tex]8\frac{1}{2}[/tex] for width
[tex]Length = 4\frac{7}{8} * 8\frac{1}{2}[/tex]
Convert to improper numbers
[tex]Length = \frac{39}{8} * \frac{17}{2}[/tex]
[tex]Length = \frac{39*17}{8*2}[/tex]
[tex]Length = \frac{663}{16}[/tex]
[tex]Length = 41\frac{7}{16}[/tex]
Find the measure of each angle indicated
Let x = 4. Evaluate the expression.
x−3
Answer:
Its 1
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
Subtract 3 from 4
Multiply
please hurry
Answer:
95.76
Step-by-step explanation:
4.2x5.6x1.7x2.4
23.52x1.7x2.4
39.9x2.4
95.76
Answer: 72[tex]\sqrt\\ 2[/tex]
Step-by-step explanation:
In the first four months of the year, Noralie’s jewelry sales were declining. After April, her sales began to improve. Which of the following tables of data represents Noralie’s jewelry sales if the sales are represented by the following function?
Answer:
Option D
Step-by-step explanation:
Sales of Noralie's jewelry were on a decline for the first four months.
After April, the sales started improving.
Given the function to represent the sales:
[tex]y=\left \{ {{-x+8}\ if\ x<4 \atop {x} \ if\ x\geq 4} \right.[/tex]
To find:
The table from the answer options that represent the answer.
Solution:
From the options, it can be clearly seen that value of [tex]x[/tex] is 2, 4, 6, 8, 10, 12.
Let us put the values one by one and then check the value of [tex]y[/tex].
[tex]x = 2,\ y = -2+8 = -6\\x = 4\, y = x = 4\\x = 6,\ y = x = 6\\x = 8,\ y = x = 8\\x = 10,\ y = x = 10\\x = 12,\ y = x = 12[/tex]
Therefore, the answer table is:
[tex]\begin{center}\begin{tabular}{ c c}x & y \\ 2 & -6 \\ 4 & 4 \\ 6 & 6 \\ 8 & 8 \\ 10 & 10 \\ 12 & 12 \\\end{tabular}\end{center}[/tex]
The value of a car decreases by 15% for each year the car is leased. If the original price of
the car was $15,000 what is the value of the car once it was leased for 4 years?
Answer:
Around 7830 dollars
Step-by-step explanation
Times 15,000 by 0.85, you'll get 12,750. Times each product by 0.85 and you'll get around 7830 dollars
:) :) :) :) :) ;0 ;0 ;0 ;0 ;0
Answer:
What is the question?????????\
Step-by-step explanation:
[41 points if correct]
Answer any four questions from above.
Help asap !!!