Answer:
use symbolab
Step-by-step explanation:
it works
Solve using the quadratic formula. (Identify a, b, and c. Write the
formula. Show the substitution step.
8n^2 + 4n -2 = 0
Answer:
Step-by-step explanation:
Here a = 8, b = 4 and c = -2. The discriminant here is b^2 - 4ac, which, when the above coefficients are substituted, results in:
discriminant = (4)^2 - 4(8)(-2), or 16 + 64, or 80.
The solutions are:
-(4) ± √80 -4 ± 4√5 4(-1 ±√5) -1 ± √5
n = ------------------ = ----------------- = --------------- = --------------
2(8) 16 4^2 4
which point is on the line x+2y=5
Answer:
1
Step-by-step explanation:
Help me pls pls pls help pls pls pls
Answer:
Triangle 1: 9
Square: 57.76
Triangle 2: 20.91
Step-by-step explanation:
Square area formula: area=[tex]side^{2}[/tex]
Triangle: area=[tex]\frac{height x base}{2}[/tex]
The distance traveled can be calculated using the formula D = s · t where s is the speed and t is the total time. Which of the situations below represent a total distance of 400 km? Select all that apply.
A) 65 km/hr for 5 hours
B) 100 km/hr for 4 hours
C) 50 km/hr for 8 hours
D) 80 km/hr for 5 hours
Answer:
B. 100km/h x4hours =400km
distance is bigger than time and speed..so you have to multiply .
Pls help I will give brainliest
Answer:
the first choice
Step-by-step explanation:
The price of a new car is $42,500. If the sales tax rate is 6.5%, then how much sales tax is being charged
Answer:
$45,262
multiply 45000*6.5%
Step-by-step explanation:
Answer:
$2762.5
Step-by-step explanation:
6.5%×42,500=2762.5
$2762.5 is the sales tax being charged.
$45,262.5 is the total price.
determine the type of symmetry
Help I don’t know this and I really need help you don’t have to explain them if you want :)
Answer:
1.) false, was rotated 90 degrees clockwise
2.) false, was flipped over y-axis
3.) true
Step-by-step explanation:
can somebody help me with this question
Answer: C
Step-by-step explanation:
The area of a circle is ∏r2- (Pi)(Radius)-squared
The Answer is C
A line segment has the endpoints P(4, 7) and Q(6, 7). Find the coordinates of its midpoint M.
Write the coordinates as decimals or integers.
Answer:
(5, 7)
Step-by-step explanation:
M = (x1 + x2/2 , y1 + y2/2)
M = ( 4 + 6 /2 , 7 + 7 / 2)
M = 5, 7
The area of Mrs. Rush’s rectangular room is 3x2+31x+36. Find the length, width and perimeter.
hello so the answer is 3147831740.3424
Enter the exponential function using t (for time) as the independent variable to model the situation. Then
find the value of the function after the given amount of time.
The value of a textbook is $63 and decreases at a rate of 14% per year for 13 years.
The exponential function that models the situation is y = 63(0.86).
After 13 years, the value of the textbook is $
Answer:
An exponential function is given by;
f(x)=ba^x
where a is any value greater than 0,
b is the intial value
when a>1 then f(x) is defined as an exponential growth
when a<1 then f(x) is defined as an exponential decay
From the our function;
f(t)=15000(0.86)^t
a=0.86<1
b=15000
since a<1, the function will be an exponential decay.
Step-by-step explanation:
why do banks charge for transaction fees?
Answer:
To make a profit and pay operating expenses, banks typically charge for the services they provide. When a bank lends you money, it charges interest on the loan. Even fee-free checking and savings accounts have some fees.
Step-by-step explanation:
have a nice day ;)
Answer:
A possible answer could be:
Charging small fees for a specific service is another way to pay for that service and to help the bank make money. Fees are also used to discourage bad behavior, like making overdrafts.
Step-by-step explanation:
Read the problem and select the correct inequality.
A table titled inequality symbols contains the symbols for less-than and greater-than.
It took Howard more than 40 minutes to finish a race. Let t represent Howard’s finishing time.
40 > t
t = 40
t > 40
t – 40 this go to it.
Answer:
C
Step-by-step explanation:
Hope it helps ¯\_(ツ)_/¯
Answer:
the answer is C :))
Step-by-step explanation:
A student is saving money to buy a video game system. She has already saved some money and will continue saving the same amount of money each week. If the equation 200=20x+60 represents the student's savings for the video game system, what does x=7 represent?
the number of weeks she needs to save
the total price of the video game system
the amount of money she has already saved
the amount of money she still needs to save
Answer:
the number of weeks she needs to save.
maths help please!!!!!!
Answer:
VW = √2
Step-by-step explanation:
y = x+1
x²+y²+2x+2y+1=0 (x²+2x+1) + (y²+2y+1) = 1
(x+1)² + (y+1)² = 1 : Circle: (x-h)² + (y-k)² = r² Center (O): (h , k) = (-1 , -1) r = 1
solve for roots: x²+(x+1)²+2x+2(x+1)+1=0
2x² + 6x + 4 = 0 x²+3x+2=0
(x+1)(x+2)=0
x = -1 or x = -2
y = 0 or y = -1
V and W: (-1 , 0) and (-2 , -1) forms a 90° center angle
√vw = √1²+1² = √2
A sculpture is 67 centimeters tall. What is the height of the sculpture in millimeters? 1.Use the number of zeros of the product when multiplying a number by a power of 10 to help you.
6.7 millimeters
67 millimeters
6,700 millimeters
670 millimeters
2.Margo studied for 20 minutes. How many seconds did she study?
1,200 seconds
800 seconds
620 seconds
120 seconds
3.How many liters are equal to 5,890 milliliters? Use the placement of the decimal point when dividing by a power of 10 to help you solve.
5.89 liters
58,900 liters
58.9 liters
589 liters
Answer:
A: 5.89 liters
Step-by-step explanation:
I got it correct on a quiz I did that had this question.
Which points are reflections of each other across the y-axis?
8
-2
2
4
8
8
X
--
-B
(-7, -3) and (7.–3)
(-5, 4) and (5. -4)
( 71 RX and X
Answer:
A. ( -7, -3) and ( 7, -3)
Step-by-step explanation:
I looked at the picture and I know it is because I already learned this
The time required to complete a job varies inversely as the number of people working.
It took 3 hours for 8 electricians to wire a building. How long would it have taken 6 electricians to do the job?
Find the absolute value of... |7|
-7 or 7?
Answer:
7
Step-by-step explanation:
absolute value is the positive numeric value of the number between the lines.
SOMEONE PLZ PLZ HELP ASAP
I need helppppppppppppppppppppppppppppppppppppppp
Answer:
C. 6.2 inches
Step-by-step explanation:
There are many ways to do this but I like to cross the miles out by putting it on the denominator
927 miles * 1 inch/150 miles = 6.18
Rounded is 6.2
Answer:
6.2
Step-by-step explanation
it should be this I took the same test last year let me know if Im worng
How many solutions does the system have?
Answer:
you have exactly one
Step-by-step explanation:
hope it helped
Please help!! I have no clue!
Please tell me or explain how u got the answer
Answer:
C
Step-by-step explanation:
like terms are terms that are the same, so in c its 7x and 9x. so when you add them it will be 16x, or you can multiply them or do whatever you want with them
What shapes have a trapezoidal cross section
1. What is the value of the y-coordinate of the solution to the system of equations x + 2y = 9 and x - y = 3? 1) 6 3) 3 2) 2 4) 5
Answer:
2) 2
Step-by-step explanation:
Subtract each equation from each other
x + 2y = 9
-x+ y = -3
3y = 6
3 3
So y = 2
what is the LCM for 9, 18 and 72
Answer:
72
Step-by-step explanation:
9 = 3^2
18 = 2 * 3^2
72 = 2^3 * 3^2
For LCM use common and not common factors with greater exponent.
Use 2^3 and 3^2.
LCM = 2^3 * 3^2 = 8 * 9 = 72
Answer: 72
Which statement is not true about the absolute value of -6
Answer:
the first one
Step-by-step explanation:
it doesn't describe that
Answer: It describes the distance between 6 and -6 on the number line.
Step-by-step explanation:
Henry went to an amusement park with $100.00 and spent all of it. He spent of the money on parking. He spent $42.50 on admission to the park. He spent 20% of the money on food. He paid a $12.75 fee for admission into a water park located inside the amusement park. He spent the remainder of his money on games that cost $1.75 each. How many games did Henry play?
Answer:
19 games
Step-by-step explanation:
Henry went to an amusement park with $100.00 and spent all of it.
Starting amount = $100.00
He spent $42.50 on admission to the park.
Amount left = $100.00 - $42.50
Amount left = $57.5
He spent 20% of the money on food.
Amount spent = 20% of amount left ($57.5) = $11.5
Amount left = $57.5 - $11.5 = $46
He paid a $12.75 fee for admission into a water park located inside the amusement park.
Amount left = $46 - $12.75
Amount left = $33.25
He spent the remainder of his money on games that cost $1.75 each. How many games did Henry play?
Number of games = Amount left / Cost per game
Number of games = $33.25 / $1.75 = 19