Answer:
y = ± [tex]\sqrt{\frac{a-x}{2b} }[/tex]
Step-by-step explanation:
Given
x = a - 2by² ( add 2by² to both sides )
x + 2by² = a ( subtract x from both sides )
2by² = a - x ( divide both sides by 2b )
y² = [tex]\frac{a-x}{2b}[/tex] ( take the square root of both sides )
y = ± [tex]\sqrt{\frac{a-x}{2b} }[/tex]
Answer:
[tex]y = a - x \di2b[/tex]
Step-by-step explanation:
[tex]2b {y }^{2} = a - x[/tex]
[tex]2b {y}^{2} \div 2b = a - x \ \div 2b[/tex]
[tex] {y}^{2} = a - x \div 2b[/tex]
[tex]y = \sqrt{a - x \div 2b} [/tex]
Please Help!! 10 points! Brainliest answer
Answer:
Its letter B
Step-by-step explanation:
factorize
a²-b²-20+1
Answer:
(a+b)(a-b)-19
Step-by-step explanation:
a²-b²
=a²-ab+ab-b²
=a(a-b)+b(a-b)
=(a+b)(a-b)
it'll be more easy to understand if u try solving it the other way(from bottom to the top)
there fore... a²-b²=(a+b)(a-b)
and -20+1=-19
so then the ans will be(a+b)(a-b)-19
Anna has amask collection of 60 masks. She keeps 45% of the masks on her wall. How many masks does she keep on her wall?
Answer:27
Step-by-step explanation:
60x.45=27
Dylan buys 3.2 pounds of grapes for $2.56. What is the price per pound of the grape.
Answer:
$1.25
Step-by-step explanation:
3.2/2.56=1.25
Answer:
1.25
Step-by-step explanation:
3.2/2.56=1.25 i know because i am the future
Jodi liked to collect stamps. On 3 different days, she bought 6 stamps. Then she decided to sell 4 of them. After that she bought 2 sets of 5 stamps. She figured out how many she had total, and then she divided that total into 3 groups to put into stamp books. How many did she put in each book?
Answer:
4
Step-by-step explanation:
6-4=2
2x5=10
10+2=12
12 divided by 3=4
She put 4 in each book.
The side lengths of a rectangle are described as (8x+1) feet and (3x−2) feet. Which expression represents the area of the rectangle in square feet?
Answer:
24x² - 13x -2
Step-by-step explanation:
To get the area of a rectanglenyou have to multiply the length and the width:
(8x+1) (3x−2)
Using Foil Method:
24x² -16x + 3x -2
24x² -13x -2
Rocco can do 60 jumping jacks in 1 minute. How many jumping jacks can he do
in 8 minutes?
Answer: 480 Jumping jacks
Step-by-step explanation: What I did was 60 * 8= 480
60 Jumping Jacks=1 minutes
120 Jumping Jacks=2 minutes
continue, continue
The number of jumping jacks can he do in 8 minutes is 480 if Rocco can do 60 jumping jacks in 1 minute.
What is a fraction?Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.
It is given that:
Rocco can do 60 jumping jacks in 1 minute.
60 Jumping Jacks = 1 minutes
120 Jumping Jacks = 2 minutes
= 60x8
= 480
Thus, the number of the jumping jacks is 480.
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solve equation 4x+2y=8 for y
Answer: y= -2x+4
Step-by-step explanation:
2y=-4x+8
y= -4/2x+8/2
Answer:
y=-2x+4
Step-by-step explanation:
4x+2y=8
2y=8-4x
y=(8-4x)/2
y=4-2x
y=-2x+4
10.) A box is created from a sheet of cardboard 20 in, on a side by cutting a square from each corner and folding up the sides Let x represent the length of the sides of the squares removed from each corner. Find an expression for the volume of the box in terms of x
Answer:
the volume will be (20-2x)(20-2x)(x)
Step-by-step explanation:
assuming its a square
Seven more than the product of five and a number is 45.
Answer:
7+(5n)=45
n= 7.6
Step-by-step explanation:
(14d2 - 8) + (6d2 - 2d +1)
Step-by-step explanation:
Dunni earns money babysitting.She charges $20 for traveling to the job, plus another $5 for each hour she babysits.Yesterday Dunni earned $60 for babysitting job
simplify and solve each equation for the x
Answer:
19y - 7y = 1 + 4(x+2x)
y = 1/12 + x
x = y - 1/12
I hope this helps!
6/9, 5/7, 5/6,4/5 What is the lcm of this? Please, please, please help!
you calculate for the LCM of the denominator
9
7
6
5
which Thier Lcm is 630
i need help with answering this question -7/12 + 1/2 =
Answer:
[tex]-\frac{1}{12}[/tex]
Step-by-step explanation:
Answer:
[tex]\frac{-1}{12}[/tex]
Step-by-step explanation:
[tex]\frac{-7}{12}[/tex] + [tex]\frac{1}{2\\}[/tex]
[tex]\frac{-1}{12}[/tex]
how is scientific notation used in the real world
Answer:
Scientific notation is used to write very large or very small numbers using less digits. ... See how scientists use this notation to describe astronomical distances, such as the distance between planets, or microscopic distances, such as the length of a blood cell.
Step-by-step explanation:
These are just a few examples of how scientific notation is used in the real world. Its versatility allows scientists, engineers, mathematicians, and professionals from various disciplines to work with numbers efficiently and communicate effectively across different scales.
Scientific notation, also known as exponential notation, is widely used in various fields to express very large or very small numbers in a more convenient and concise format. Here are some examples of how scientific notation is used in the real world:
Astronomy: Scientific notation is essential in astronomy to represent the vast distances between celestial objects. For instance, the distance between the Earth and the Sun is approximately 93 million miles or 1.496 × 10²kilometers.
Physics: Scientists often use scientific notation to express the values of physical constants, such as the speed of light (2.998 × 10^8 meters per second) or the Planck constant (6.62607015 × 10^-34 joule-seconds).
Chemistry: Scientific notation is commonly used in chemistry to express the magnitude of extremely small or large quantities of substances. For example, Avogadro's number, which represents the number of atoms or molecules in one mole of a substance, is approximately 6.022 × 10².
Medicine: In medical and biological sciences, scientific notation is employed to represent quantities such as cell counts, enzyme activity, or concentrations of substances. It allows scientists and healthcare professionals to work with numbers that span a wide range, from tiny quantities to large-scale measurements.
Finance and Economics: Scientific notation is useful in financial and economic calculations, especially when dealing with large numbers such as national debt, gross domestic product (GDP), or company revenues. It simplifies the representation and manipulation of these values.
Engineering: In various engineering disciplines, scientific notation is used to express measurements and quantities, such as distances, weights, electrical currents, and voltages. It enables engineers to work with both very large and very small values encountered in their calculations and designs.
Computer Science: Scientific notation is employed in computer science to represent large or small numbers in computer programming. It is particularly useful when dealing with values that exceed the capacity of standard data types or when expressing very small probabilities or error values.
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An object is moving at a speed of 11 yards every 6 months. Express this speed in centimeters per hour. Round your answer to the nearest hundredth.
Answer:
its c
i took the quiz
Step-by-step explanation:
The speed in centimeters per hour is 0.2328 centimeters per hour.
Given,
An object is moving at a speed of 11 yards every 6 months.
We need to find this speed in centimeters per hour.
How many centimeters in one yard?1 yard = 91.44 centimeters.
We have,
11 yards every 6 months
11 yard = 6 months
1 month = 30 days
1 day = 24 hours
30 days = 30 x 24 hours
30 days = 720 hours
1 month = 720 hours
6 months = 6 x 720 hours
6 months = 4320 hours
11 yards = 4320 hours
1 yard = 91.44 cm
11 x 91.44 cm = 4320 hours
1005.84 cm = 4320 hours
So,
we will find how many cm per hour.
if 1005.84 cm = 4320 hours then,
Dividing both sides by 4320.
1005.84/ 4320 cm = 4320/4320 hours
0.2328 cm = 1 hour
Rounding to the nearest hundredth.
0.23 cm = 1 hour
Thus the speed in centimeters per hour is 0.2328 centimeters per hour.
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ax + by = c
To solve each literal equation for the given variable
Answer:
Step-by-step explanation:
For a:
ax = c - by
a = (c - by)/x
For x:
ax = c - by
x = (c - by)/a
For b:
by = c - ax
b = (c - ax)/y
For y:
by = c - ax
y = (c - ax)/b
Use elimination to solve and match each system of equations to the correct solution
9x+4y=-72
2x-3y=-16
Answer:
Step-by-step explanation:
27x + 12y = -216
8x - 12y = -64
35x = -280
x= -8
2(-8) - 3y = -16
-16 - 3y = -16
-3y = 0
y = 0
(-8, 0)
Can anyone give the answer for the question which i have attached .
In need of assistanceeeee!
Answer:
300 mi
Step-by-step explanation:
set the equations equal to each other.
110+(.60x)=20+(.90x)
solve
90=0.30x
x=300
check
"substitute x"
both = $290
Answer:
300 mi
Step-by-step explanation:
Choices are...
A)1120
B)2275
C)3500
D)2345
It's Side Splitter Theorem
Answer:
B
Step-by-step explanation:
The sections of the parallel roads split by the transversals are in proportion, that is
[tex]\frac{350}{300}[/tex] = [tex]\frac{first}{1650}[/tex] ( cross- multiply )
300 first = 577500 ( divide both sides by 300 )
first = 1925 ft
Thus
Elm st → Maple st = 1925 + 350 = 2275 ft → B
Find the perimeter of the polygon with the vertices $Q(-3,\ 2),\ R(1,\ 2),\ \ S(1,-2),$ and $T(-3,-2)$ .
Answer:
The perimeter is 16 units.
Step-by-step explanation:
Once you graph all the sides you can easily count and see the perimeter is 16. :)
Help me please it says that I need help !!
Answer:
A, D
Step-by-step explanation:
The independent variable is plotted on the x-axis. It is labeled "number of cans". The dependent variable is plotted on the y-axis. It is labeled "number of tennis balls". Then each ordered pair is ...
(independent variable, dependent variable) = (cans, balls)
Then the point (2, 6) corresponds to (2 cans, 6 balls).
The applicable descriptive statements are ...
A. 2 cans contain 6 tennis balls
D. There are 6 tennis balls in 2 cans
A taxi charges $2.00 for the first mile and $1.60 for every additional mile. Rachel is taking a trip that is 4 miles long. How much will she be charged?
If log x (8x-3)-logx4=2, the value of x is or .
Answer:
[tex] x = \dfrac{1}{2} [/tex] or [tex] x = \dfrac{3}{2} [/tex]
Step-by-step explanation:
[tex]log_x (8x - 3) - log_x {4} = 2[/tex]
[tex] log_x \dfrac{8x - 3}{4} = 2 [/tex]
[tex]log_x (2x - \dfrac{3}{4}) = 2[/tex]
[tex] x^2 = 2x - \dfrac{3}{4}} [/tex]
[tex] 4x^2 - 8x + 3 = 0 [/tex]
[tex] (2x - 1)(2x - 3) = 0 [/tex]
[tex] 2x - 1 = 0 [/tex] or [tex] 2x - 3 = 0 [/tex]
[tex] 2x = 1 [/tex] or [tex] 2x = 3 [/tex]
[tex] x = \dfrac{1}{2} [/tex] or [tex] x = \dfrac{3}{2} [/tex]
What value of x with make the equation below true?
1/2 (2x + 8) = 3x + 8 - x
Please help
Answer:
Step-by-step explanation:
1/2 (2x+8)=3x+8−x
Use the distributive property to multiply 1/2=0.5 by 2x+8.
1/2 x 2x+1/2x8=3x+8-x
Cancel out 2 and 2.
x+1/2 ×8=3x+8−x
Multiply 1/2 =0.5 and 8 to get 8/2=4.
x+8/2=3x+8−x
Divide 8 by 2 to get 4.
x+4=3x+8−x
Combine 3x and −x to get 2x.
x+4=2x+8
Subtract 2x from both sides.
x+4−2x=8
Combine x and −2x to get −x.
−x+4=8
Subtract 4 from both side
−x=4
Multiply both sides by −1.
x=−4
Which set of measurements will produce a scalene acute triangle?
PLEASE GIVE BRAINLIST
An ACUTE triangle contains three acute angles. (In other words, each angle of an acute triangle is less than 90 degrees.) A SCALENE triangle is one in which all sides have different lengths (and therefore, all angles have different measures).
HOPE THIS HELPED
OMG PLEASE HELPPPPP I NEED THIS TO BE TURNED IN , IN LIKE 10M
Answer:
use 5x for each question
Step-by-step explanation:
its says u should get 5x out of them
9. Fill in the blank. -8 +_= -15
10. Fill in the blank. 12 +_=-30
Please respond quickly thank you!
Step-by-step explanation:
9. -8+(-7)=-15
10. 12+(-42)=-30