If x^2+x =3^2/3+3^-2/3 then prove that 3x^3+9x-8=0
x^2 + 2 = 3^2/3 + 3^-2/3
x^2 = 3^2/3 + 3^-2/3 - 2
x = √(3^2/3 + 3^-2/3 - 2)
x = 0.748888296
Substitute for x in 3x^3 + 9x - 8:
3( 0.748888296)^3 + 9( 0.748888296) - 8 = 0.
So it is proved.
If the interval (a, “infinity”) describes all values of x for which the graph of f(x) = 4/x^2 - 6x +9 is decreasing, what is the value of a?
Answer:
1
Step-by-step explanation:
x^2 that squared its not included x have invisible 1 thats my answer is 1
Answer: the value of A is 3 :)
Step-by-step explanation:
Willie left the mall and traveled toward the town hall at an average speed of 40 km/h. Gabriella left two hours later and traveled in the opposite direction with an average speed of 70 km/h. Find the number of hours Gabriella needs to travel before they are 410 km apart.
Answer:
Gabriella need to 2.45 hours of travelling to be 410km apart from Willie.
Step-by-step explanation:
In order to make them 410km apart and the time included in it is to be found
we proceed as
Willie left the mall earlier and Gabriella left two hours before
so willie has travelled for 2 hours while Gabriella was still at the initial point
with this logic we find the hours Gabriella needs as follows
Willie Gabriella
←←←←←←←← →→→→→→→→→→
40km/h 70km/h
X hours X+2 hours
40*x+70(x+2) = 410
40x+70x + 140=410
110x=270
x=270/110
x= 2.45hrs
Fernado sells his drawings he makes.he sold $30 worth of drawings and his profit was $19.How much were his expenses?
Answer:
11 I think
Step-by-step explanation:
just subtract!
30 - 19 = 11
The car is traveling 80 kilometers per hour What is the slope of the line
Answer:
speed at a given instant
Step-by-step explanation:
instantaneous speed
Priya starts with $50 in her bank account. She then deposits $20 each week for 12 weeks.
Write an equation that represents the relationship between the dollar amount (y) in her bank account and the number of weeks (x) of savings
Answer: y=mx+b is the proper equation
Step-by-step explanation:
Which algebraic expression represents the phrase "seven more than half of a number”?
o 7 -1/2x
o -7+1/2x
o 1/2x+7
o -1/2x-7
PLEASE HELPPPP
Answer:
C
Step-by-step explanation:
Seven more is addition (+7)
Half a number would be represented by 1/2, and since the number is unknown, it would be represented by a variable (in this case, x)
C is the correct response
Hope this helps!
What is the solution: 3x + 9 = 2x + 5
What is the solution to the equation 13.7y – 10.6 = 6.2y + 19.4
Answer: hope this helps :)))
y=4
Step-by-step explanation:
Step 1: Subtract 6.2y from both sides.
13.7y−10.6−6.2y=6.2y+19.4−6.2y
7.5y−10.6=19.4
Step 2: Add 10.6 to both sides.
7.5y−10.6+10.6=19.4+10.6
7.5y=30
Step 3: Divide both sides by 7.5.
7.5y/7.5 = 30/7.5
y=4
Ruby misses 10% of the free throws she attempts in a season. How many total free throws did she attempt if she missed 70?
Answer:
700
Step-by-step explanation:
70x10 = 700
The total number of free throws she attempted is 700.
What is a percentage?The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Example:
Required percentage value = a
total value = b
Percentage = a/b x 100
Example:
50% = 50/100 = 1/2
25% = 25/100 = 1/4
20% = 20/100 = 1/5
10% = 10/100 = 1/10
We have,
Missed free throws = 10%
Total free throws = 100%
10% = 70
Multiply 10 on both sides.
100% = 700
Thus,
Total free throws are 700.
Learn more about percentages here:
https://brainly.com/question/11403063
#SPJ2
If there are 4 cups in a quart, how many quarts are in 20 cups? *
A. 3
B. 4
C. 5
D. 6
Answer:
C
Step-by-step explanation:
20/4=5
Solve for x: 5x + 3 = 8
04
O 11
O 1
016
What is the answer
Answer:
X = 1
Step-by-step explanation:
5x + 3 = 8
subtract 3 from the 8
8 - 3 = 5
divide 5x / 5
x = 1
Answer:
the answer is (c) 1
Step-by-step explanation:
hope that helps
Evaluate each expression for x =2 and Y = 5
Answer:
3: 14
4: 2/25
Step-by-step explanation:
What is -3.61 x -3.5
Answer:
12.635
Step-by-step explanation:
When you multiply 2 negatives, it turns into a positive.
Answer:
-3.61 x -3.5 = -7.11
find missing length
Answer:
The missing Leg is X=21
Step-by-step explanation:
i need an answer asap
Find F(0).
0
1
1.36
Answer:
1
Step-by-step explanation:
0/2=0
e^0=1
Brent divided 3 1/2 by 7. What number did he get?
Answer:
1/2 or .5
Step-by-step explanation:
Answer: 1/2
Step-by-step explanation:hope this helps! :)
graph y=4/5x - 7 pls
Answer:
I'm not exactly sure what you want answered here because you have the correct graph, but this is my graph and it's the same as yours
For some reason, in our history class, there are 14 boys than there are girls. If a total of 32 students are in the class, how many boys and how many girls are there?
Answer:
There are 23 boys and 9 girls in the class
Step-by-step explanation:
The given information is that the number of boys = 14 + The number of girls
The total number of boys and girls = 32
Let the number of girls = x
Therefore, we have;
The number of boys = 14 + x
The total number of boys and girls = 32 = The number of boys + The number of boys
The number of boys + The number of boys = 14 + x + x = 14 + 2·x
∴ The number of boys + The number of boys = 32 = 14 + 2·x
14 + 2·x = 32
2·x = 32 - 14 = 18
2·x = 18
x = 18/2 = 9
x = 9
Therefore, the number of boys is 14 + x = 14 + 9 = 23 boys
The number of boys = 23 boys
The number of girls = x = 9 girls
the number of boys = 23 boys
The number of girls = x = 9 girls
The number of girls = 9 girls
Therefore, there are 23 boys and 9 girls in the class.
I need help i will give you Brainliest if it’s correct.. thank you.
Answer:
5 to the left and 7 up.
Step-by-step explanation:
Count 5 times to the left (starting from any one of the original points), then 7 units up from where ever you ended.
Which function matches the table?
Number of Days Rented
1
2
3
4
Rental Cost ($)
12
17
22
27
A. f(x) = 5x
B. f(x) = 5 + 5x
0 Ç. f(x) = 7 + 5x
O D. f(x) = 12 + 5x
Answer:C. f(x)=7+5x
Step-by-step explanation:
12=5(1)+n
12=5+b
-b+12=5
-b=5-12
5-12=7
-b=7
f(x)=7+5x
I know this because I just answered this question and got it right
The equation of the function is f(x) = 7 + 5x option (C) f(x) = 7 + 5x is correct.
What is a function?It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
It is given that:
The table is given,
From the data given in the table:
12 = 5(1)+n
12 = 5+b
b = 7
The function would be:
f(x) = 7 + 5x
Thus, the equation of the function is f(x) = 7 + 5x option (C) f(x) = 7 + 5x is correct.
Learn more about the function here:
brainly.com/question/5245372
#SPJ5
can you please explain slope, the y-intercept, how to find the equation and how to graph it properly?
Answer:
Slope is a line on a graph, you find slope with the m=yx+b equation. Y intercept is the point that the line crosses the y axis at, it is represented by b. X and Y in the equation are your coordinates. You graph it by starting at your y-intercept and going up in a straight line following the slope calculated.
Step-by-step explanation:
Round 61 grams to the nearest ten grams.
Answer:
60
Step-by-step explanation:
Mr. Mohr wants to build a rectangular patio using concrete tiles that are 12 square inches. The patio will measure 13.5 feet by 43 feet. What is the area of the patio? How many concrete tiles will he need to complete the patio?
Answer: He will need 49 tiles.
Step-by-step explanation:
Given: The patio will measure 13.5 feet by 43 feet.
Area of patio = 13.5 feet x 43 feet [Area = length x width]
= 580.5 sq. feet
Since area of each concrete tile = 12 sq. inch
Number of concrete tiles required to cover patio = (Area of patio) ÷ (area of each concrete tile)
= 580.5 ÷ 12
= 48.375 sq. inch ≈49
Hence, he will need 49 tiles.
Answer:
49 tiles
Step-by-step explanation:
Answer: He will need 49 tiles.
Step-by-step explanation:
Given: The patio will measure 13.5 feet by 43 feet.
Area of patio = 13.5 feet x 43 feet [Area = length x width]
= 580.5 sq. feet
Since area of each concrete tile = 12 sq. inch
Number of concrete tiles required to cover patio = (Area of patio) ÷ (area of each concrete tile)
= 580.5 ÷ 12
= 48.375 sq. inch ≈49
Hence, he will need 49 tiles.
22+8p<=60 pls help me I am been timed.
Answer:
p<=4.5
Step-by-step explanation:
Answer:
p<19/4
Step-by-step explanation:
my aunt did this she got all of it right she is top of math class
Hope this helps
i dont anderstan is about coverting measurements
Answer:
Itss complicated i can agree
Step-by-step explanation:
just a bunch of numbers rlly
look up tutorials for help :)
A book cost $19.95 with a discount of 6% and a sales tax of 5%. What is the final price of the book?
Answer:
Try This $16.625
Step-by-step explanation:
iufywufhughuiwhgiwhiowhg
how long will it take a dog to walk around the block if the distance is 6 miles in the dog walks 2 mph
Answer:
12 hours
Step-by-step explanation:
Answer:
Step-by-step explanation:
I think 62
b-a-n-a-n-a-s bananaanaananaananannanannananaanannana HELP ME PLZ
Answer:
Line Graph
Step-by-step explanation:
It would be the clearest to display the information. You could see how much money you made per year the easiest.
Answer:
a line graph
Step-by-step explanation:
it would be able to display the information provided and actually make sense, while the others would be more difficult to show on the graph.
Dylan created a scatter plot and drew a line of best fit, as shown. What is the equation of the line of best fit that Dylan drew? A. B. C. D.
Answer:
The answer is D
Step-by-step explanation:
Answer:
It would be D, hope this helps!