Answer:
Standard form
Two thousand n fifty dollars
Answer:
Standard Form
Step-by-step explanation:
Standard Form is how people write numbers in equations as words.
3. How would you explain to someone who has not yet studied trigonometry the
difference between an identity and an equation?
Answer:
Solving an equation means finding the value or values for which the two expressions are equal. ... An identity is an equation which is always true, no matter what values are substituted.
A trig identity is an equation that is true for all values of x;
For example:
sin²x + cos²x will always equal 1 no matter what the value of x.
There are some equations considered to be identities that are in fact not true all the time.
tan(2x) = 2tanx/(1 - tan²x) is not true when x = π/2 (right side is undefined).
A conditional equation is one that is true for a subset of the real numbers, i.e. for certain values of x, but not all.
For example:
sin²x - 1 = 0 is only true for some values of x.
sin²x = 1
sinx = ±√(1) = ±1
sinx = 1 or sinx = -1
x = sin-11 or x = sin-1(-1)
x = π/2 + 2kπ, k any integer or x = 3π/2 + 2kπ, k any integer (this can be condensed, but left this way for emphasis).
To learn more about trigonometric identities and equations refer to:
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CO The town librarian bought a combination of new release movies on DVD for $20 Let x represent the number of new releases, and let y represent the number of of $500 and wanted to purchase as many DVDs as possible, which values of new-release and classic movies bought? 8. y = 45 o 10, y = 22 x = 16 = 22 O 18, y = 18
Answer:
O represents? Is it 0 or O?
Constance's car has a 12-gallon gas tank and can travel 25 miles on one gallon of gas. Constance begins with a full tank of gas and drives at a constant rate of 40 miles per hour. How many hours can you she drive before her car runs out of gas
Answer:
7.5 hours
Step-by-step explanation:
12 x 25 = 300
the distance she can travel with a full tank of gas is 300 miles
300 = 40t
300/40 = t
7.5 = t
(x+5<2) help quick im at school testing..
Answer:
x<-3
Step-by-step explanation:
(x+5<2)
Subtract 5 from both sides;
x+5-5<2-5
Simplify;
x<-3
Answered by NONE other than the ONE & ONLY #QUEEN herself aka #DRIPPQUEENMO!!!
HOPE THIS HELPED!!!
A scientist uses 8.5 grams of carbon every 30 minutes during an experiment. If the experiment lasted 2 hours, how many total kilograms of carbon did they use?
Answer:
34
Step-by-step explanation:
Please hurry I need this soon and no links
Use the spinner to find the theoretical probability of spinning a 1 and then a 2. Round answer to the nearest hundredth. A spinner is divided into 9 equal sections. Starting from the top right and moving clockwise direction, the regions are labeled 1,2,3,4,5,6,7,8, and 9. The spinner pointed at near the boundary line of 3.
Answer:
1/18
Step-by-step explanation:
yur welcome
Find the slope of the line
Answer:
1/2
Step-by-step explanation:
Pick two points on the line
I picked (0, 2) and (2, 3)
m = (3-2)/(2 -0) = 1/2
In an alloy of gold and silver the ratio of the metals is 6:4. How much gold is there in 200 grams of this alloy?
Answer:
120 gold is in the alloy
Step-by-step explanation:
G:S
6:4
6+4=10
200/10=20
20*6=120
Hope this helps!
A perfectly square cornfield has an area of 9 miles. Which of the following is true>
A, Each side of the field is 9 miles long
B, Each side of the field is 3 miles long
C Each side of the field is 2.25 miles long
D Each side of the field is 900 miles long
Answer:
The answer is b
Step-by-step explanation:
imagine needing help on a brain pop quiz
SANDBOX A rectangular sandbox at a playground is 3 yards long by 2.3 yards wide. What is the area of the sandbox?
Answer:
the answer is 6.9
Step-by-step explanation:
this is because 3 x 2.3 =6.9 because 3 x 2 = 6 and 3 x 3= is 9 so together it is 6.9
Barkley's team won 40% of their games last season. If they won 12 games total last season, how many games did they play?
Step-by-step explanation:
40% × 12 = 4.8
12 + 4.8 = 16.8
rounded off = 17 games
PLEASE HELP ASAPPPP!!!!!!!
here is a screenshot of the math problem
In the rectangle LOBA, if m∠1 = 36°. Find m∠OBA and m∠2.
m∠OBA =
m∠2 =
Answer:
90 54
Step-by-step explanation:
PLEASE HELP ME!!! ITS DUE TONIGHT!!!
A number cube labeled 1 through 6 is rolled once in the spinner shown is spun once. The spinner has four equal sized sections. This experiment is repeated 60 times. The relative frequency for getting a sum of five was 1/5. What is the difference between the number of expected outcomes in the number of actual outcomes?
Answer:
2
Step-by-step explanation:
I did it on Mc Graw Hill
Difference between number of expected outcomes and number of actual outcomes is; 2
What is the number of outcomes?
From the question, we are told that the number cube is labelled from 1 to 6.
This means that there are supposed to be 6 expected outcomes.
However, from the spinner, we see only 4 numbers which are 1, 2, 3 and 4. This means the number of actual outcomes will only be 4.
Thus;
Difference between expected outcome and actual outcome = 6 - 4 = 2
Read more on expected outcomes at; https://brainly.com/question/24855677
Gabe mails two packages. One package weighs as much as the other
package. The total weight of the packages is 7 lb. Write and solve an equation
to find the weights of the two packages. Show your work.
I have to write an equation and then solve it. Help.
Answer:
Both packages are 3.5 lb.
The equation is 7 / 2
Step-by-step explanation:
All you have to do is divide 7 by 2.
7 / 2 = 3.5
3.5 * 2 = 7
So, the answer is 3.5
Hope this helps! :)
PLEASE HELP OR I WILL FAIL PLEASE U WILL GET A LOT OF POINTS
Answer:
b
Step-by-step explanation:
did this yesterday
write in slope intercept form: 4x-5y= -20
Step-by-step explanation:
4x - 5y = -20
-5y = -4x -20
y = 4/5x + 4
What is the result of 3 divided by three-fifths?
A number line going from 0 to 3.
One-ninth
One-fifth
5
9
Answer:
its 5 or c
Step-by-step explanation:
ur weecome
Answer:
What is the result of 3 divided by three-fifths?
A number line going from 0 to 3.
One-ninth
One-fifth
5
9
Step-by-step explanation:
the awnser is 5
hello im a person
are you a person
NANI
Answer: i am a person
Step-by-step explanation:
Answer:
heloo
i am a person
or am I.
1. Dois angulos correspondentes, de-
terminados por duas retas paralelas,
interceptadas por uma transversal,
medem 2x + 40° e -3x + 90°
a) Determine o valor de x.
b) Determine a medida de cada um dos
ângulos dados.
Answer:
Step-by-step explanation:
dadds
(1+i)(3-5i) equals what
Answer:
8-2i
Step-by-step explanation:
help out please !
Select all of the quadratic expressions in vertex form.
A (2+4)^2– 3
B (- 5)^2+ 2
C x^2+ 2x + 5
D x (x+2)
E (2+4)^2
Answer:
A C E
Step-by-step explanation:
Pls answer quickly I only have a 1 hr left to submit this assignment and I’m so stuck on it
Please help me whoever know Tangent ratio
Answer:
Opposite/adjacent
Step-by-step explanation:
Tangent = Opposite/adjacent
Fill in the blank in the sentence below with the correct term. The ___________ is the number or numbers that occur most often in a set.
what is the anwser for 7x−x
Answer:
6x
Step-by-step explanation:
7x - x
6x
Determine the quadratic curve of best fit for the data. Then estimate what the value of will be when = −4. {(−3,2), (0,5), (1,7.3), (−1,3.3), (−6,5), (−7,7.3)} Answer choices 4.3 5.3 3.3 2.3
Answer:
The value of 'y' when x = -4 is 2.3
Step-by-step explanation:
Curve of best fit can be found by plotting the points on MS Excel and drawing a curve that goes through the points as shown in the attached graph
The equation that approximate the curve from which the y-value at a x-value of -4 can be estimated is found as follows
The general equation for a quadratic equation is y = a·x² + b·x + c
Therefore, we get;
2 = a·(-3)² + b·(-3) + c
2 = 9·a - 3·b + c
5 = 0·a + 0·b + c
5 = c
7.3 = 1·a + 1·b + c = a + b + 5
7.3 = a + b + 5
2.3 = a + b
2 = 9·a - 3·b + 5
-3 = 9·a - 3·b
Solving gives;
a = 13/40, b = 79/40
The equation of the quadratic curve is therefore;
y = (13/40)·x² + (79/40)·x + 5
When x = -4, we get;
y = (13/40)·(-4)² + (79/40)·(-4) + 5 = 2.3
When x = -4, y = 2.3
Plotting the points on MS Excel we find from the attached graph that the estimated value of 'y' when x = -4 is as calculated (2.3).
Please Help ASAP
A car travels 220 miles in 4 hours. If the car travels at the same speed, how far will it have traveled after 6 hours?
Answer: 330
Step-by-step explanation:
220 divided by 4 is 55 meaning 55x4=220 so in that case 55x6=330
Answerrrrrrrrrr: )?
Answer:
I think the answer is D
Step-by-step explanation: