Answer:
here is my answer........
Step-by-step explanation:
(3-x)^2 = 9 - 3x - 3x + X2
= X2 - 6x +9
what is the difference between 25 and 21.2?
Answer: 3.8
Step-by-step explanation:
25.0
-
21.2
--------------
3.8
(c) Solve the equation 7x³ +28x² = 0
Answer:
x = - 4 , x = 0
Step-by-step explanation:
7x³ + 28x² = 0 ← factor out 7x² from each term on the left side
7x²(x + 4) = 0
equate each factor to zero and solve for x
7x² = 0 ⇒ x² = 0 ⇒ x = 0
x + 4 = 0 ⇒ x = - 4
What is the value of cosine (startfraction 4 pi over 3 endfraction)? negative startfraction startroot 3 endroot over 2 endfraction negative one-half one-half startfraction startroot 3 endroot over 2 endfraction
The value of Cos(4π/3) is (-1/2) i.e., negative one half.
The given function is Cosine (Start fraction 4 pi over 3 end fraction) and this can be written simply as,
Cos(4π/3)
On splitting 4π/3 in two parts, this can also be written as
= Cos(π + (π/3))
(π + (π/3)) lies in the third quadrant and in the third quadrant the value of cosine function is negative. So, using quadrant sign for cosine function, this can be written as
= -Cos(π/3)
Now, Substitute the value of Cos(π/3) = 1/2.
= (-1/2)
Cos(4π/3) = (-1/2)
The value of Cos(4π/3) is (-1/2) i.e., negative one half.
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Answer:
It's B
Step-by-step explanation:
A tank truck fills the gas stations reservoir at the rate of 10 1/4 gallons per minute.if the reservoir was empty and it is now 41 gallons full how long has the tanker been filling the reservoir
The tanker has been filling the reservoir for 4 minutes given that it fills at a rate of 10 1/4 gallons per minute.
Rate refers to the relationship of two quantities of different units. Usually, it is a measure or quantity of something per unit time.
rate = amount / time
If a tank truck fills the gas station's reservoir at the rate of 10 1/4 gallons per minute, and if the reservoir is empty at the start and become 41 gallons full, we can determine how long the tanker has been filling the reservoir by dividing the final amount by the rate.
time = amount / rate
where amount = 41 gallons
rate = 10 1/4 gallons per minute
time = 41 gallons / 10 1/4 gallons per minute
time = 4 minutes
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2) How many distinguishable letter arrangements can be made from the letters in:
a) FLUKE?
b) PROPOSE?
Answer:
for "FLUKE" its 5! = 120
and "PROPOSE" its 7! /2!×2! = 1260
Step-by-step explanation:
"FLUKE" has no repeating letters.
"PROPOSE" has two repeating letters.
we divide by the repeating letters like I did on "PROPOSE" .
THANK YOU.
i need help because i dont gettt itttt
Answer:
[tex]\boxed{3} \;v^2 + \boxed{4}\;v + \boxed{5}[/tex]
Step-by-step explanation:
Original expression: 3 + v + 4v² + 2 - v² +3v
Combining like terms in a equation means grouping them together to get a single instance of that term instead of multiple
For example in this expression we can see there is a +4v² and a -v². Group these together and simplify algebraically to get a single v² expression. Do the same with the others.
3 + v + 4v² + 2 - v² +3v
Group the v² terms together to get 4v² - v² = 4v² - 1v² = 3v² (v² == 1v²)
(since the variables are same we can simply add the coefficients
Now group the v terms and simplify
3 + v + 4v² + 2 - v² + 3v
v + 3v = 4v
Finally group the constants
3 + v + 4v² + 2 - v² +3v
3 + 2 = 5
So the final expression is
3v² + 4v + 5
The numbers are what you put in the boxes for each
Usually this process is done in a few steps
3 + v + 4v² + 2 - v² +3v
= (4v² - v²) + (v + 3v) + (3 +2)
= 3v² + 4v + 5
A hardware store sells planks of wood. the lengths, in centimetres, of the planks are normally distributed with mean 210 and standard deviation 7. two planks are selected at random. find the probability that they differ in length by more than 10 cm.
The required probability that they differ in length by more than 10 cm is 1.
Given that,
A hardware store sells planks of wood. the lengths, in centimeters, of the planks are normally distributed with a mean of 210 and a standard deviation of 7. two planks are selected at random. find the probability that they differ in length by more than 10 cm is to be determined.
Probability can be defined as the ratio of favorable outcomes to the total number of events.
Here,
The
P(x > 10) = p(z = (x - μ)/σ)
P(x > 10) = p(z = (10 - 210)/7)
P(x > 10) = p(z = -28.57143)
P(x > 10) = 1
Thus, the required probability that they differ in length by more than 10 cm is 1.
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what is the value of a?
A.-16
B.-3
C.3
D.16
Answer:
Which equation do I refer to?
Step-by-step explanation:
Please help me!!! I need help asap on this question Whoever is correct will get brainly!
Answer:
I am not 100% sure more like 12% sure that it is c
Step-by-step explanation:
Adding -6 is the same as:
Answer:
It is the same as subtracting 6.
Step-by-step explanation:
1 + (-6) = 5
1 - 6 = 5
Which statements are true? Select the five correct answers.
Answer: I guess?
Step-by-step explanation:
10.) The height of a tree trunk is 20 meters, and the base has a diameter of 1 meter. If the tree has the mass
420, what is the density of the tree?
26.27 kgm⁻³
Density is the ratio of mass to volume
Density = Mass / Volume
Let us assume tree is a cylinder,
d= 1
r = d/2 = 0.5 m
h= 20 m
m= 420kg
Volume = π r²h
= 22/7 x o.25 x 20
Density = mass / volume
= 420 / 22/7 x o.25 x 20
= 26.27 kgm⁻³
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A formula for 6 gallons of light green paint uses 3/8 gallon of white paint. Liam has 9/16 gallon of white paint. Does Liam have enough white paint to make 8 gallons of light green paint?
Yes, 9/16 gallon of white paint is enough for Liam to make 8 gallons of light green paint.
How do you defined the term unitary method?It is a method for estimating the value of a single unit from of the value of multiple units, as well as the value of multiple units from of the value of a single unit. With in unitary method, we everytime count the value of a unit one or quantity first, and then calculate the values of more or lesser quantities.For the given conditions; use unitary method.
3/8 gallons white paints ------> 6 gallons of light green paint.
Thus, from 1 gallons of white paint.
1 gallons white paints ------> (6×8)/3 gallons of light green paint.
For preparing 8 gallons of light green paint, multiply both side of equation by 9/16.
9/16 gallons white paints ------> (6×8)/3 × (9/16) gallons of light green paint.
on solving.
9/16 gallons white paints ------> 9 gallons of light green paint.
The requires value for light green paint is 8 gallons, we have prepared more than that that is 9 gallons.
Thus, Liam has sufficient white paint to make 8 gallons of light green paint.
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5/6 - 1/9 = ?/? - ?/? = ?/?
please help 20 points
i need to know what each ( ?/? ) is
5/6 - 1/9=?/? - ?/? = ?/? , value of each (?/?) is
5/6 -1/9 =15 /18 -2/18 =13 /18.
As given,
5/ 6 - 1/9 =?/? -?/? =?/?
Convert the given terms into like terms
Least common multiple of (6,9)=18
Value of each ( ?/?)
(5/6 ) × ( 3/3) -(1/9) × (2/2)
= 15 /18 - 2/18
= 13 /18
Therefore,5/6 - 1/9 = ?/? - ?/? = ?/? , value of each (?/?) is equal to
5/6 -1/9 = 15 /18 -2/18 = 13/18.
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√a² + b² = a + b
is this true or false? i think its true but i cant explain it right
Answer:
False
Step-by-step explanation:
Consider a=3 and b=4. The left hand side is 5 but the right hand side is 7.
The function f is defined by the following rule
f(x)=2x-1
Complete the function table
The value of the function at x = -3, -2, 0, 1, and 5 will be -7, -5, -1, 1, and 9, respectively.
What is the value of the expression?When the relevant factors and natural laws of a mathematical model are given values, the outcome of the calculation it describes is the expression's outcome.
The function is given below.
f(x) = 2x - 1
The value of the function at x = - 3 will be
f(-3) = 2(-3) - 1
f(-3) = - 6 - 1
f(-3) = - 7
The value of the function at x = - 2 will be
f(-2) = 2(-2) - 1
f(-2) = - 4 - 1
f(-2) = - 5
The value of the function at x = 0 will be
f(0) = 2(0) - 1
f(0) = 0 - 1
f(0) = - 1
The value of the function at x = 1 will be
f(1) = 2(1) - 1
f(1) = 2 - 1
f(1) = 1
The value of the function at x = 5 will be
f(5) = 2(5) - 1
f(5) = 10 - 1
f(5) = 9
The value of the function at x = -3, -2, 0, 1, and 5 will be -7, -5, -1, 1, and 9, respectively.
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A sample of hamburger had a total mass of 200. g, of which 30.0 g was found to be fat. what is the percent of fat in this hamburger sample?
The percentage of fat in this hamburger sample is 15 %.
What is percentage ?Percentage is the value per hundredth.
According to the given question a sample of hamburger had a total mass of 200. g, of which 30.0 g was found to be fat.
To find what percentage of the hamburger contains fat we put amount of fat in the numerator and total amount on the denominator and multiply this fraction by 100 to obtain the result in terms of percentage.
∴ (30/200) × 100
= 3000/200
= 30/2
= 15 %.
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Simplify the following expression.
(13x + 9y) + (38x + 33y)
-----------------------------------
22x + 42y (A)
22x + 46y (B)
51x + 42y (C)
51x + 46y (D.)
Answer:
C: 51X+42Y
13x + 38x + 9y + 33y
adding,
51x + 42y so option C
-8(1-a)=-8(a-7) solve the equation
Answer:
a=4
Step-by-step explanation:
30 POINTS
Write and solve an absolute value equation for the minimum and maximum times for an object moving at the given speed to travel the given distance. Absolute value 3 ft. 10 ft/s for 30 ft
Answer:
Step-by-step explanation:
12
please help thank you!!
How to solve it??? Which formula to be use. Also which sides would be taken??
The values of x and y are x = 45/7 and y = 42/5
How to determine the values of x and y?To calculate the value of x
Here, we make use of the ratio
AC : BC = AQ : QP
This gives
x : 5 = x + 9 : 12
Express as fractions
x/5 = x + 9/12
Cross multiply
12x = 5x + 45
Evaluate the like terms
7x = 45
Divide by 7
x = 45/7
To calculate the value of y
Here, we make use of the ratio
AB : BC = AP : PQ
This gives
6 : 5 = 6 + y : 12
Express as fractions
6/5 = 6 + y/12
Cross multiply
30 + 5y = 72
Evaluate the like terms
5y = 42
Divide by 5
y = 42/5
Hence, the values of x and y are x = 45/7 and y = 42/5
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What is an equation of the line that passes through the
points (2, -3) and (2, 6)?
Answer: It is the point where the line crosses the x axis of the cartesian coordinates. We can write an equation of the line that passes through the points y=0 as follows: Using the equation: y = 3x – 6, put y=0. To find the x-intercept. 0 = 3x – 6. 3x = 6. The x-intercept is 2 of the slope-intercept form of line
Peter is 10 years old and is 5 years younger than half his dad's age. If his dad is Z years old, what is Z?
Answer:
Z = 30
Step-by-step explanation:
trust me bro
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Answer:
Please give brainliest if you think it applies
30
Step-by-step explanation:
Z/2 -5 = 10
Add 5 to both sides
Z/2 = 15
Multiply both sides by 2
Z = 30
What is 1+1 answer please despite
Answer:
2...?
Step-by-step explanation:
Help? Anyone pls. I'd give brainliest
Answer:
3/2
Step-by-step explanation:
xy= -2 X -3
= 6
z = 4
so xy/z is 6/4 which is 3/2.
Find the length of a picture frame whose width is 3 inches and whose proportions are the same as a 9-inch wide by 15-inch long picture frame.
Answer:
The length is 5.
Step-by-step explanation:
Since the proportions are the same, 3 is 3 times less than 9. The same applies to 15, which 3 times less would be 5. It has a ratio of 3:5.
PLEASE HELP ASAPPP !!! WILL GIVE BRAINLIEST AND 5 STAR RATING
Answer:
1/3
Step-by-step explanation:
i need this done help i need all the work shown
how do put this 7+2x=11+5x
