Answer:
a² - b²
Step-by-step explanation:
We can recognize (a + b)(a - b) as a difference of squares.
Step 1: Write expression
(a + b)(a - b)
Step 2: FOIL (Expand)
a² - ab + ab - b²
Step 3: Combine like terms
a² - b²
how do you combine like terms
Answer: you add them up
Step-by-step explanation:
Explanation:
Combining like terms is commonly used to solve algebraic expressions. Like terms are those species or variables that are the same in any algebraic representation.
Different mathematical operations can be performed on like species. We can add, divide, multiply, subtract, factorize, etc those terms.
Take for example;
Solve;
5x + 3 = 4x + 6
To solve this simply collect the like terms;
5x and 4x, 3 and 6 are like terms
5x - 4x = 6 - 3
x = 3
This is one way of solving problems by collecting like terms.
How many sides does a regular polygon have if the measure of an exterior angle is 18⁰?
Answer:
We do this by dividing 360° by the size of one exterior angle, which is 72°. The answer is 360° ÷ 72° = 5 sides. to see whether you are correct.
A middle school took all of its 6th-grade students on a field trip to see a ballet at a theater that has 2500 seats. The students filled 1475 of the seats in the theater. What percentage of the seats in the theater were filled by the 6th graders on the trip?
Answer:
59%
Step-by-step explanation:
1475 / 2500 = 0.59 or 59%
Step-by-step explanation:
I need help this this maths
Answer:
Step-by-step explanation: I would say the ones with Y= goes into functions and the “X” goes into not function (this is an guess that is half way right)
One math student, John, can solve 6 math problems in 20 minutes while another student, Juaquine, can solve the same 6 math problems at a rate of 1 problem per 4 minutes. Who works faster?
1.John
2.Juaquine
Answer:
John
Step-by-step explanation:
6/20=0.3
1/4=0.25
Juaquine is solving problems at a faster rate as compared to John.
What is the rate?A rate is a type of ratio that compares two values with distinct units. A rate is expressed as a fraction.
As per the question, we can compare their rates of problem-solving by calculating the number of problems they can solve per minute.
For John, this is 6 problems / 20 minutes = 0.3 problems per minute.
For Juaquine, this is 6 problems / (4 minutes/problem) = 1.5 problems per minute.
Since Juaquine can solve 1.5 problems per minute compared to John's 0.3 problems per minute, Juaquine is solving problems at a faster rate.
Hence, Juaquine works faster as compared to John.
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8m+6 What is the constant
Answer:
the answer is 6
What is the decimal equivalent of 8/3
Answer:
2.6666666666666. . . (2.67 rounded to the nearest hundredth)
Step-by-step explanation:
(Sorry if I am wrong. Please don't get mad at me)
Hope I helped :)
THIS IS ALL MY POINTS
Answer:
A. Yes, because it passes the vertical line test.
Step-by-step explanation:
We just started this unit in math class so I'm realitivly new to it but I tried my best to answer your question as accurately as possible! Have a wonderful rest of your day and I hope my answer was helpful and accurate!
Answer:
A. Yes, because it passes the vertical line test.
Step-by-step explanation:
We just started this unit in math class so I'm realitivly new to it but I tried my best to answer your question as accurately as possible! Have a wonderful rest of your day and I hope my answer was helpful and accurate!
Step-by-step explanation:
P.S don't trust tutors...
...they are always (mostly) wrong
jacek went to a sporting event with some friends. They bought 2 sticks of equal price and a drink that cost $3.51. Write an equation to represent cost T and the cost s of each snack bought. How much did each snack cost if they spent $18.83 total?
Answer:
T + S = 18.33.
Step-by-step explanation:
If T is the cost of the drink and S is the cost of the snacks, then its easy.
The cost of the drink plus the cost of the snacks.
Which equation is true when k= -15
Answer:
k over 3 +17 =12
Step-by-step explanation:
-15/3=-5
-5+17=12
Write the equation of the horizontal line that passes through (-3, 4).
Answer:
y=4
Step-by-step explanation:
if u remember
Vertical
Unidentified
X intercept
Horizontal
O =zero
Y Intercept
so if it's horizontal if goes through the y axis and the coordinate gives you (-3,4) so the y axis will be 4.
A company that manufactures dishwashers is testing their latest product to see how long it takes to cool down once a cycle is complete. The function, f(x) = 360 - 15x, represents the cooling cycle, where x is equal to the number of minutes and f(x) is equal to the temperature of the dishwasher after x minutes.
Step-by-step explanation:
Given that the function for the temperature of the dishwasher is
f(x) = 360 - 15x
We are told that x represents the number of minutes it takes to cool down.
with a given/known value of x we can predict the temperature of the dishwasher.
Say x=12 minutes, we can tell what the temperature will be after 12 minutes
by plugin in the value of x=12 in the expressions for the temperature
f(x) = 360 - 15(12)
f(x) = 360 - 180
f(x) = 180
The temperature after 12 minutes will be 180°
Which equation represents a line that passes through the two points in the table? x3,6 y 1,6
The lines is represented by (D)
What is equation?Equations are mathematical statements containing two algebraic expressions on both sides of an 'equal to (=)' sign. It shows the relationship of equality between the expression written on the left side with the expression written on the right side. In every equation in math, we have, L.H.S = R.H.S (left hand side = right hand side). Equations can be solved to find the value of an unknown variable representing an unknown quantity.
Parts of an EquationThere are different parts of an equation which include coefficients, variables, operators, constants, terms, expressions, and an equal to sign. When we write an equation, it is mandatory to have an "=" sign, and terms on both sides.
As, the solution given:
put x=3
y-1 = 0
y=1
Similarly, x= 6
y-1= 5/3 * (3)
y-1 = 5
y=6
Hence, the lines represent y-1 = 5/3 ( x- 3)
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Answer:y-1 = 5/3 ( x- 3)
5x + 15 + 5x +15 +5x
Answer:
15x + 30
Step-by-step explanation:
I'm pretty sure it's that. Hope it's right!
Answer:
15x+30
Step-by-step explanation:
Idk if this is what your looking for <3
Please help it's urgent!
Solve for r: S = 4pier^2
Answer: i cant type it but take the images- hope that helps
Step-by-step explanation:
Birthday Polynomial Project Birthday October 9,2003 Help pls anyone
Answer: I don't know what you need help on with this question
Step-by-step explanation:
I would help if I knew
Jenny is a software salesperson. Her base salary is $ 1500 and she makes $50 more for every copy of English is Fun she sells. Her total pay, P (in dollars), after
selling c copies is given by the following.
P = 50c+1500
oo
Answer the following questions.
B
(a) What is Jenny's total pay if she sells 21 copies?
si
(b) If Jenny's total pay is $3150, how many copies did she sell?
copies
Does this graph represent a function? Why or why not?
10+
8.1
8+
2
06142
10
A. Yes, because it passes the vertical line test,
B. Yes, because it is a curved line.
C. No, because it fails the vertical line test.
D. No, because it is not a straight line.
Please help me the picture is above I’ll mark you as the brainliest but please show the work. Thank you! :)
a) whatever is in the bracket you substitute into x.
c(100) = (1.25*100) + 2175
= 125 + 2175
= 2300
Another exmaple: if it says c(2 + x) then you substitute that into x
→ 1.25(2 + x) + 2175 (and then expand that)
b) A physical interpretation of this could be:
For every 1.25 w-widget that is produced, you would add $2175 for the other costs. (something like that)
Harry adds 18 more toy cars to his collection is it postive or negative
Step-by-step explanation:
negative it is hope it helps
Answer:
I believe if it has the word 'adds' it's positive.
The multiplicative inverse of 5 and 10-5k
pls help!!!!!!!!!!!!!
Answer:
All triangles have 180 degrees.
Step-by-step explanation:
Select three ratios that are equivalent to16:12
Answer:
256:144
48:36
32:24
:)
Given the relation y = 7x^2 + 3, if the input is 4, what is the output? (4 points) 115 116 118 120
Answer:
115
Step-by-step explanation:
PLug in 4 as the value of x.
7 (4)^2 + 3
7 (16) + 3
112 + 3
115.
The output is 115.
round off 572 389 correct to three significant figure
572000 or 5.72×10^5
Step-by-step explanation:
depends on what format ur teacher prefers but both show 3 sig figs correctly so either is correct
4. Which is NOT a way in which thermal energy is transferred? A. Conduction , B. Convection , C. Radiation , D. Sublimation
WILL MARK BRAINLIEST!!
Answer:
Convection
Step-by-step explanation:
Conduction means the heat energy is being transferred .Hence its not the ansRadiation is a process happened in radioactive elements like radium,uranium etc by which they release beta or alpha particles.Sublimation happens like a solid converted to gas or gas converted to solid directly.The correct option is C Radiation.
Conduction means transfer of energy (heat) arising from temperature differences between adjacent parts of a body.
Convection is the transfer of thermal energy by the physical movement of fluid (liquid, gas, or plasma) from one location to another.
Radiation is an electromagnetic radiation that is emitted by a body as a result of its temperature. All objects with a temperature above absolute zero emit thermal radiation in a spectrum of wavelength.
Sublimation is the process of changing a solid into a gas without passing through the liquid phase. To sublime a substance, a certain energy must be transferred to the substance via heat (q) or work (w).
Hence from all the above definitions it is clear that every phenomenon except radiation transfer some amount of thermal energy.
Hence through Radiation thermal energy is not transferred.
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please help me!!! It’s due Thursday
Answer:
sorry man
Step-by-step explanation:
Which of the following real numbers is NOT and irrational number?
A 35
B 51
C 29
D 49
Answer:
B
Step-by-step explanation:
cause i said so
Which value of x satisfies the equation
5/6 (3/8 - x)
= 16
Answer:
[tex]x = - 18.825[/tex]
Step-by-step explanation:
[tex] \frac{5}{6}( \frac{3}{8} - x)
= 16 \\ \frac{(5)(3)}{(6)(8)} - \frac{5x}{6} = 16 \\ 15 - 40x = 768\\ 40x = 15 - 768\\ x = - 18.825[/tex]
The value of x for the equation to be equal is- 40/753
Solution to linear equationGiven the linear equation expressed as:
5/6 (3/8 - x) = 16
Open the parenthesis
5/16 - 5/6x = 16
Collect the like terms
-5/6x = 16 - 5/16
-5/6x = 251/16
Cross multiply
1506x = -80
x = -80/1506
x = -40/753
Hence the value of x for the equation to be equal is- 40/753
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Always thinking about food, Scooby-Doo and his crew went out to eat. Their total bill was about $82. If the group wanted to leave a 20% tip, how much will the tip cost? (Can you also show your work?)
Answer: it will be $16.4
Step-by-step explanation:
Answer: 16.40
Step-by-step explanation:
82 * 20 = 16.40