Answer:
Square root of n^2 is -n
For example, (-3)^2 is 9, square root of nine is 3, -3=-(3)
Square root of a^2 is a,
For example, 2^2=4, square root of 4 is 2, 2=2.
An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
If n < 0, the square root of n² is n
If n > 0, the square root of n² is -n.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
Square root of n² when n < 0
This means,
√n² = n
Square root of n² when n > 0
This means,
√(-n)² = -n
Thus,
If n < 0, the square root of n² is n
If n > 0, the square root of n² is -n.
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Babaganoush’s electricity supply company charges him a fixed quarterly sum plus a rate per unit for electricity used. In the most expensive quarter last year (January to March), he used 2,400 units and his bill was $320. In the least expensive quarter (July to September), he used 800 units and his bill was $144. He is now adding extra insulation to his home which is expected to reduce his overall electricity consumption by 25%.
What can he expect his January to March bill to be next year (if there are no increases in overall tariffs)?
Answer:
14,848.25
Step-by-step explanation:
2400+800=3200
320+144=464
25 3200 464
---- ------ ----= 14,848.25
100 x x
25x3200x464 divided by 100
Hope this helped and have a great day!
HELP WILL GRIVE BRAIN 100 POINTS PLEASE ANSWER ALL 5
Answer:
1. The sum of 4 and x is 7, and to isolate the variable, you move the 4 to the other side and the equation will change into x=7-4, giving us x = 3
2. To solve this inequality, you must isolate the variable x by moving -9 to the other side. To do this, you have to divide 27 by -9, and this causes the direction of the inequality sign to change. After you divide, the inequality changes to this: x<-3
3. since there are no negative numbers involved in this inequality, you divide 3 by 1/4 (or multiply it by 4) to isolate x. this gives us x <= -12
4. To solve this algebraic equation, you must isolate the variable 3x. To do this, you must move -9 to the other side of the equation by adding 9 to the 6. this gives us 3x=15 and x = 5
5. To put x by itself, you subtract 1 by 4, giving you x<-3
Raj gave his mother a bouquet of 12 pink and white roses. There were 4 pink roses in the bouquet. Which ratio
represents the number of white roses to the total number of roses in the bouquet?
1/3
1/2
2/3
3/4
Sorry I was wrong, I didn’t mean to get it wrong.
12 flowers, 4 of them are pink, 12-4 is 8, so that is 8 white flowers. When you simplify 8/12, that would be 2/3.
the product of a number and -4 is 80
*please help ;-;*
Answer:
its -4 x -20 and that equals 80
Step-by-step explanation:
Help me and please do number 4 and be more specific please Number 5 and 6 also.
Answer:
where is questions wher where where
This isn't really a question but something to kinda help you. I know with all this stuff going on with the Cov** and stuff school is stressing you out and all that, but know that you can do this! KK BE STRONGG!!
Answer: it is b because of the x axis
Step-it is by-step explanation:
Please help me please please
Answer:
I believe for question 3 it is the first answer
Step-by-step explanation:
I want to give others a chance to earn points as well
Determine the distance between -1 and -7
What is the distance between (-2, -3) and (-4, 3)? on a scatter plot
Answer:
Look at the image.
Step-by-step explanation:
Two linear functions are represented in different formats.
Function 1:
x y
0 −2
2 0
3 1
5 3
Function 2:
Graph of a line passing through the point begin ordered pair negative 2 comma 0 end ordered pair and the point begin ordered pair 0 comma 4 end ordered pair.
Which statements are true?
Select each correct answer.
Function 1 has a greater rate of change than function 2.
Function 2 has a greater rate of change than function 1.
Function 1 has a greater y-intercept than function 2.
Function 2 has a greater y-intercept than function 1.
Answer:
Funcation 2 and Fauncation 1
Step-by-step explanation:
Function 2 has a greater rate of change than function 1. Therefore, options B and D are the correct answers.
What is the equation of a line?The general equation of a straight line is y=mx+c, where m is the gradient, and y = c is the value where the line cuts the y-axis. This number c is called the intercept on the y-axis.
Function 1:
With coordinates (0, -2) and (2, 0)
Now, m=(0+2)/(2-0)
m=1
Substitute m=1 and (x, y)=(0, -2) in y=mx+c, we get
-2=c
Substitute m=1 and c=-2 in y=mx+c, we get
y=x-2
Function 2:
With coordinates (-2, 0) and (0, 4)
Here, m=(4-0)/(0+2)
m=2
Substitute m=2 and (x, y)=(-2, 0) in y=mx+c, we get
0=-4+c
c=4
Substitute m=2 and c=4 in y=mx+c, we get
y=2x+4
Therefore, options B and D are the correct answers.
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please help will mark brainliest. don't answer for points not unless flagged
Answer:
B.
Step-by-step explanation:
First, (3/2) is greater than 1, which therefore eliminates A and D.
Second, you must determine if the triangle gets larger or smaller. Lets suppose that X = 2 and Y = 3. If we were to multiply both of these values by (3/2), our points would change to X = 3 and Y = 4.5
Since there was an increase, this means that the triangle was larger.
This leaves B as the answer.
Remember: Any scale value greater than 1 is an enlargement, as proven by the hypothetical.
Answer:
The answer is b owo
PLEASE HELP ASAP!!! BRAINLIEST TO RIGHT ANSWER!!!
The picture below shows a pole and its shadow:
A pole is shown with a right triangle side. The right triangle has hypotenuse 365 cm and base 27 cm.
What is the height of the pole? (1 point)
Select one:
a. 196 centimeters
b. 244 centimeters
c. 338 centimeters
d. 364 centimeters
Answer: 220cm
Step-by-step explanation:
Let's make the base of this triangle 'a' which we know is 21cm
While 'a' and 'b' in Pythagorean are interchangeable, 'c' will ALWAYS be the hypotenuse.
That being said, we also know that 'c' is 221cm
Once we plug in the numbers we have been given, our formula looks like this: 21 squared + b squared = 221 squared
Now it's time to square 'a' and 'c'
Our equation is now simplified to: 441 + b squared = 48841
Now, we need to isolate 'b squared' to find it's value. We do this by subtracting 441 from both sides (it needs to be from both sides to keep the equation even)
With 441 subtracted from both sides, our equation is now: b squared = 48400
Our last step is to find the square root of both sides of the equation, because 'b' is the value of the height of the triangle, but right now we have 'b squared' so to turn that into 'b' we have to find the square root of 'b squared', which would give us 'b' (square roots and squares cancel each other out).
We know that whatever we do to one side must also be done to the other, so since we just found the square root of 'b squared', now we need to find the square root of 48400, which is 220.
That would make our equation: b = 220
b = height = 220
Answer:
D.) 364 centimeters
Step-by-step explanation:
365 Δ 27
364
27 + 364 = 391
(you have to add the smaller numbers together so that they are bigger than the hypotenuse.)
HELP HELP PLEASE!!!!!!!!!!!!!!
Answer:
Potatoes = $0.56 per pound
Broccoli = $2.90 per pound
Pears = $0.98 per pound
Step-by-step explanation:
Potatoes
To find the price per pound of the potatoes, we will need to divide $2.52 by 4.5 to find out how much one pound costs:
$2.52 / 4.5 = $0.56
The formula is the same for all of the other items.
Broccoli
$7.25 / 2.5 = $2.90
Pears
$2.45 / 2.5 = $0.98
Hi
Can you share a strategy for error analysis? Of multiplying.
[tex]Put the following values in order from least to greatest\\2^{0}, 2^{-2}, (-2)^{2}, -2^{2}[/tex]
Answer:
4321
Step-by-step explanation:
1 is 1, 2 is .25, 3 is -2, 4 is -4
Answer:
(-2)², -2², 2-², 2°
Step-by-step explanation:
please help will mark brainliest. don't answer for points.
Answer:
I
Step-by-step explanation:
Other answers arnt correct and answer I is
Answer:
F
Step-by-step explanation:
Its pretty self explanatory also If this helped you please rate this comment, give it a like, and maybe mark it as branliest!
What's The Answer? Good Luck!
Does anyone know the surface area of this figure????
Answer:
Step-by-step explanation:
10*10
6*6
8*8
then add them to get your answer
i think-
if it were perimeter u add 10+10+6+6+8+8 i think :I
if this helps give brainliest pls-
if wrong ,ignore this part
13 points!!! I need help on these questions please!
Garry is studying a square pyramid and wants to draw a net of the figure to help determine its surface area. Which net represents a square pyramid?
A net with a triangular base and 3 square sides.
A net with a square base, 2 triangular sides, and 2 square sides.
A net with a square base and 4 triangular sides.
A net with a square base, 2 triangular sides, and 4 square sides.
Answer:
A net with a square base and 4 triangular side
Step-by-step explanation:
Answer: the answer is C
Step-by-step explanation:
Pls help me! Answer all 5 questions and will get brainliest!!!!
Answer:
1)B
2)C
3)B
4)A
5)C
Step-by-step explanation:
BrainLiest please
solve this and get brainly
Answer:
The slope is positive, because the line is going up
The equations is.....y = 2/3x - 2
To find slope we can make a table
x y
6 2
3 0
From 2 to 0, we subtract 2 ( y section)
From 6 to 3, we subtract 3 (x section)
Now we do y/x
so...y/x = -2/-3 = 2/3 (since 2 negatives equal a positive)
Slope = 2/3
And for the y-intercept, I used the graph to help me out, and to find it, you need to see where the line intersects the y-axis which is at -2.
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Help and show all work please
Answer:
1-3
2-8.9
3-6.3
4-26
5-7.8
6-17
7-10
8-32
9-7.9
10-13.2
11- is a right triangle
12- is not a right triangle
13- is a right triangle
14- is not a right triangle
15- is a right triangle
16- is not a right triangle
Step-by-step explanation:
I will do the rest it will just take me some time. I will also give you
step by step at the end.
Answer:
1- 3
2- 8.9
3- 6.3
4- 26
5- 7.8
6- 17
7- 10
8- 32
9- 7.9
10- 13.2
11- 289 right triangle because 289 = 289
12- 81 not right triangle
13- 169 right triangle
14- 156 not right triangle
15- 676 right triangle
16- 9 not right triangle
Step-by-step explanation:
a2 + b2 = c2
example:
9x9 + 10x10 = c2
81 + 100 = 181
the square root of 181 = c2
c2 =
a2 + b2 = c2
a2 = a squared
b2 = b squared
squared means to multiply it by its self
do this for everyone
Jeffery buys a shovel that costs 18 dollars and a pickaxe that costs 23 dollars. If sales tax is 6%, what is the total purchase price including tax?
Answer:
$2.46
Step-by-step explanation:
23+18 = 41
41 * 0.06 = 2.46
So, the answer you get is $2.46
Hope this helps!
Maybe brainliest?
Please help me. Please
Answer:
im pretty sure that the answer would be B
Step-by-step explanation:
Answer:
it would be B bc u will replace 2 with 6
Step-by-step explanation:
hope this helps
If recycling 2,500 pounds of paper saves 20 trees, how many trees are saved when 4,000 pounds of paper are recycled?
Answer:
This is a ratio question. Set 16/2000 = x/5000 and solve for x. = 40 trees
Step-by-step explanation:
Write a percent between 25% and 50% then write it as a decimal and as a fraction in show your work explain your answer I need help!!!!!!
Answer:
30percent or 30%
Step-by-step explanation:
30% is 30/100
when simplified becomes 3/10 and 3tenths is also 30percent because it is 30percent of 100. Hope this helps
What number should be subtracted from both sides of the following equation to solve for x?
x + 27 = 30
Answer:
x= 3
Step-by-step explanation:
Answer:
27
Step-by-step explanation:
to solve for x it would look like this
x + 27 = 30
x = 30 - 27
x = 3
answer options
2
7
8
3
Ahhh help me pleaseeee its overdue and needs to be turned in today!!!
Step-by-step explanation:
4.25× 1.59 = 6.7575 = $7
plz mark my answer as brainlist plzzzz.
hope this will be helpful to you.