Answer:
a (a - b)
Step-by-step explanation:
[tex]2a^{2}-3ab+b^{2} from 3a^{2} + 2ab - b^{2}[/tex]
Now, as [tex]2a^{2}-3ab+b^{2}[/tex] is from [tex]3a^{2} + 2ab - b^{2}[/tex]
so it will be subtracted :
[tex]3a^{2} + 2ab - b^{2}[/tex] [tex]-2a^{2}-3ab+b^{2}[/tex]
= [tex]a^{2} - ab[/tex]
= a (a - b)
Please help me!! I will give you brainliest!
Answer:
volume = 7/8 cubic units
Step-by-step explanation:
[tex]volume = base \ area \times height = \frac{1}{2} \times \frac {7}{4} = \frac{7}{8} units^3[/tex]
anybody know the answer to this question? I’m kinda lost
Answer:
A. For every 1 inch of mercury the pressure increases, the boiling point is expected to increase by 1.9°F
Step-by-step explanation:
A regression model is in the form :
y = mx + c
With m being the slope = rate of change
In regression, the value of the slope gives the rate of change in y value per unit increase in the value of x
The slope in the question above is 1.9, this means for every unit increase in mercury pressure, then boiling point, y increases by 1.9°F
PLS HELP EMERGENCY!!!
Answer:
[tex]P(t) = 29816591(1.025)^{t-5}[/tex]
Step-by-step explanation:
Equation:
The equation for the population of California, in t years after 1990, is given by:
[tex]P(t) = 29816591(1.025)^t[/tex]
In which 29816591 is the initial population, that is, the population in 1990.
From 1995:
First, we have to find the population in 1995(5 years after 1990), which is P(5), which we will consider as the initial value in the equation.
So
[tex]P(5) = 29816591(1.025)^5 = 33734736[/tex]
So
Since t is still given in years after 1990, we have to subtract t by 1995 - 1990 = 5 in the exponent. So
[tex]P(t) = 29816591(1.025)^{t-5}[/tex]
The city of Seeley, CA, has elevation 45 feet below sea level. What is the elevation of a city with an elevation the opposite of Seeley's?
A) -45 feet
B) 0 feet
C) 45 feet
D) 90 feet
The elevation of the city with an elevation opposite Seeley's is -45 feet. The correct option is A.
What is trigonometry?Trigonometry is a branch of mathematics that deals with the study of the relationships between the sides and angles of triangles, and the calculations based on these relationships. It specifically focuses on the ratios between the sides of a right-angled triangle.
The elevation of a city with an elevation opposite of Seeley's can be found by taking the opposite of Seeley's elevation, which is 45 feet, to get the answer.
Therefore, the elevation of the city with an elevation opposite of Seeley's is:
A) -45 feet
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prove that: [tex]tan20+4sin20=\sqrt{3}[/tex]
tan( 20 ) + 4 Sin( 20 ) =
( Sin( 20 ) / Cos( 20 ) ) + 4 Sin( 20 ) =
Sin( 20 ) + 4 Sin( 20 ).Cos( 20 ) / Cos( 20 ) =
Sin( 20 ) + 2 × 2 Sin(20).Cos(20)/ Cos(20) =
Sin( 20 ) + 2 × Sin( 40 ) / Cos( 20 ) =
Sin( 20 ) + 2Sin( 40 ) / Cos( 20 ) =
Sin( 20 ) + 2Cos( 50 ) / Cos ( 20 ) =
Sin( 20 ) + 2Cos( 20 + 30 ) / Cos( 20 ) =
________________________________
2 × Cos( 30 + 20 ) =
2 × [ Cos(30).Cos(20) - Sin(30).Sin(20) ] =
2 × [ √3/2 × Cos(20) - 1/2 × Sin(20) ] =
√3 Cos(20) - Sin(20)
_________________________________
Sin( 20 ) + 2Cos ( 20 + 30 ) / Cos( 20 ) =
Sin( 20 ) + √3 Cos(20) - Sin(20) / Cos(20) =
Sin(20) - Sin(20) + √3 Cos(20) / Cos(20) =
0 + √3 Cos(20) / Cos(20) =
√3 Cos(20) / Cos(20) =
Cos(20) simplifies from the numerator and denominator of fraction
√3 × 1 / 1 =
√3
And we're done ....
Tiana is going to swim the length of her swimming pool. The width of her pool is 42 yards and the diagonal distance from one corner to the opposite corner is 58 yards. How far will Tiana swim when she swims the length?
Answer:
40 yards
Step-by-step explanation:
Pythagorean theorem: a² + b² = c²
Using this, let's set the length as x.
42² + x² = 58²
Simplify.
1764 + x² = 3364
Subtract 1764 from both sides.
x² = 1600
Take the square root.
x = 40
Thus, the length she would swim would be 40 yards.
Answer:
40
Step-by-step explanation:
You roll two six-sided number cubes. Let X be the number of odd numbers that show up on the two cubes. What are the
possible values of X?
0.1.2
0,1,2,3,4,5,6
1,3,5
0,1,3,5
Answer:
The possible values of X are 0,1 or 2.
Step-by-step explanation:
In this question:
Two number cubes are going to be rolled.
X is the number of odd numbers that show up on the two cubes.
For each cube, there is one number, which can be even, or odd.
Thus, there can be no odd numbers, one odd number or two odd numbers, and the possible values of X are 0,1 or 2.
Lena buys candy that costs $6 per pound. She will buy less than 8 pounds of candy. What are the possible amounts she will spend on candy?
Use c for the amount (in dollars) Lena will spend on candy.
Write your answer as an inequality, solved for c.
What is the inequality for this?!
HELP!
Answer:
$42
Step-by-step explanation:
less than 8 is supposed to be 7 or less 6×7=$42
show me an example of fibonacci sequence
Answer:
See Below
Step-by-step explanation:
The fibonacci sequence is a recursive type sequence where each term is the sum of the two previous terms. The sequence starts out as:
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946, 17711, 28657, 46368, 75025, 121393, 196418, 317811...
The fibonacci sequence can be found in nature quite often. For example, it is found in "the fruit sprouts of a pineapple, the flowering of an artichoke, an uncurling fern and the arrangement of a pine cone's bract". It can also be found in the number of tree branches in each row.
Another cool place it can be found is in the diagonals of pascals triangle (shown in the image attached)
*Disclaimer: I do not own any of the images
When planning a date night, you have a choice of 2 types of restaurants: pizza (P) or barbeque (B); a choice of 3 types of movies: romantic comedy (R), action/adventure (A), or drama (D); and a choice of 2 types of post-movie activities: grabbing coffee (C) or getting ice cream (I). If you are choosing only one of each.
Required:
List the sample space in regard to the dates (combinations of restaurants, movies, and post-movie activities) you could pick from. REDDIT
Answer:
[tex]S = \{PRC, PRI,PAC,PAI,PDC,PDI,BRC, BRI,BAC,BAI,BDC,BDI\}[/tex]
Step-by-step explanation:
Given
[tex]Restaurant = \{P,B\}[/tex]
[tex]Movies = \{R,A,D\}[/tex]
[tex]Post-movie = \{C,I\}[/tex]
Required
List out the sample space
To do this, we simply pick 1 item in each category, without repetition.
So, we have:
[tex]S = \{PRC, PRI,PAC,PAI,PDC,PDI,BRC, BRI,BAC,BAI,BDC,BDI\}[/tex]
Supposed f(x) =x^3. Find the graph of f (x-3)
Answer:
Step-by-step explanation:
the graph will move 3 units to the right
graph 4 I think, although cannot see the picture well
Answer:
Step-by-step explanation:
The -3 translates the graph of x^3 3 units to the right.
Solve the system of linear equations by elimination. Show your work
2x-y=-3
4x + 3y = -21
Answer:
x = -3, y = -3
Step-by-step explanation:
Solve the following system:
{-y + 2 x = -3 | (equation 1)
3 y + 4 x = -21 | (equation 2)
Swap equation 1 with equation 2:
{4 x + 3 y = -21 | (equation 1)
2 x - y = -3 | (equation 2)
Subtract 1/2 × (equation 1) from equation 2:
{4 x + 3 y = -21 | (equation 1)
0 x - (5 y)/2 = 15/2 | (equation 2)
Multiply equation 2 by 2/5:
{4 x + 3 y = -21 | (equation 1)
0 x - y = 3 | (equation 2)
Multiply equation 2 by -1:
{4 x + 3 y = -21 | (equation 1)
0 x+y = -3 | (equation 2)
Subtract 3 × (equation 2) from equation 1:
{4 x+0 y = -12 | (equation 1)
0 x+y = -3 | (equation 2)
Divide equation 1 by 4:
{x+0 y = -3 | (equation 1)
0 x+y = -3 | (equation 2)
Collect results:
Answer: x = -3, y = -3
The function f(x) = a^x + 4 will never cross the x-axis if a is positive. True or False?
Answer:
True
Step-by-step explanation:
If a is negative then the shape of the graph is an upside down U, which intersects the x-axis. If a is positive it will never cross the X axis.
It is true that f(x)=[tex]a^{x}[/tex]+4 will never cross the x axis if a is positive.
What is function?Function is relationship between two or more that are variables expressed in equal to form. In a function each value of x must have a corresponding value of y.
How to find x intercept?We have been given that f(x)=[tex]a^{x} +4[/tex] and we have to find whether it will cross x axis or not.
when a line crosses the x axis the value of y becomes negative. We have to first check at y=0.
[tex]a^{x}+4[/tex]=0
[tex]a^{x}[/tex]=-4
taking log both sides,
log [tex]a^{x}[/tex]=log(-4)
x log a=0.602059991+1.3437635i
x=(0.602059991+1.3437635i)/log a
when we put the value of x in f(x) the value of f(x) cannot be negative so it cannot crosses the x axis.
Hence it is true that f(x)=[tex]a^{x}[/tex]+4 will never cross the x axis if a is positive.
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I need awnser asap im giving brainlist in this one
8/1 x 8
Answer:
64
hope this helps
have a good day :)
Step-by-step explanation:
Can u please answer these two questions
a number is one more than twice another number. if the sum of the two numbers is -35, what are the two numbers
Answer:
(2x+1) +x = -35
3x= -36
x= -12
Step-by-step explanation:
True or False: The first number in an integer subtraction problem tells you where to start on the board.
Answer:
i think false
Step-by-step explanation:
mathsssssssss
helppppp
plzzz
Answer:
i dont know your answer but plz can u help me in my maths question plz
Following are the three types of data sets: a. Vehicle speeds on highway I-5 (9 vehicles) 74, 82, 67, 73, 65, 41, 74, 49, 85 b. Sodium grams in canned soup (8 varieties) 4.22, 3.60, 2.68, 2.75, 2.70, 4.17, 2.72, 4.29 c. Campus health center visits (12 students) 1, 5, 6, 13, 2, 3, 1, 3, 3, 1, 4, 3 For each data set, find the median, midrange, and geometric mean. (Round your answers to 2 decimal places. Leave no cells blank. Enter 0 as an answer if undefined.)
Answer:
Kindly check explanation
Step-by-step explanation:
Given :
A.)
Vehicle speeds on highway (9 vehicles) 74, 82, 67, 73, 65, 41, 74, 49, 85
Ordered data :
41, 49, 65, 67, 73, 74, 74, 82, 85
Sample size, n = 9
Median = 1/2 * (n +1) th term
Median = 1/2 * 10 = 5th term
Median value = 73
Midrange = (Maximum + minimum) / 2
Midrange = (85 + 41) / 2 = 126 / 2 = 63
Geometric mean : √(x1*x2*.. xn)^1/n
Geometric Mean:
(41*49*65*67*73*74*74*82*85)^1/n
= 66.19
B.)
Sodium grams in canned soup (8 varieties)
X = 4.22, 3.60, 2.68, 2.75, 2.70, 4.17, 2.72, 4.29
Ordered data:
2.68, 2.70, 2.72, 2.75, 3.60, 4.17, 4.22, 4.29
Sample size, n = 8
Median = 1/2 * (n +1) th term
Median = 1/2 * 9 = 4.5th term
Median value = (2.75+ 3.6) / 2 = 3.175
Midrange = (Maximum + minimum) / 2
Midrange = (4.29 + 2.68) / 2 = 3.485
Geometric mean : √(x1*x2*.. xn)^1/n
Geometric Mean:
(2.68*2.70*2.72*2.75*3.60*4.17*4.22*4.29)^1/8
= 3.32
C.)
Campus health center visits (12 students)
X : 1, 5, 6, 13, 2, 3, 1, 3, 3, 1, 4, 3
Ordered data :
1, 1, 1, 2, 3, 3, 3, 3, 4, 5, 6, 13
Sample size, n = 12
Median = 1/2 * (n +1) th term
Median = 1/2 * 13 = 6.5th term
Median value = 3
Midrange = (Maximum + minimum) / 2
Midrange = (1 + 13) / 2 = 7
Geometric mean : √(x1*x2*.. xn)^1/n
Geometric Mean:
(1*1*1*2* 3*3*3*3*4* 5*6*13)^1/12
= 2.82
Let f(x)=-4(2)^x. The graph of g(x)=f(x)+k is shown below. Identify the value of k.
Given:
The function is:
[tex]f(x)=-4(2)^x[/tex]
The graph of the function [tex]g(x)=f(x)+k[/tex] is given.
To find:
The value of k.
Solution:
We have,
[tex]f(x)=-4(2)^x[/tex]
[tex]g(x)=f(x)+k[/tex]
Using these two functions, we get
[tex]g(x)=-4(2)^x+k[/tex]
From the given graph it is clear that the graph of g(x) passes through the point (0,2). It means the point (0,2) satisfies the function g(x).
Substituting [tex]g(x)=2[/tex] and [tex]x=0[/tex] in the above function, we get
[tex]2=-4(2)^0+k[/tex]
[tex]2=-4(1)+k[/tex]
[tex]2=-4+k[/tex]
[tex]2+4=k[/tex]
[tex]6=k[/tex]
Therefore, the value of k is 6.
12 43 a а- 5 6 b + 8 7 Line a is parallel to line b, m 2 = 4x+44, and m 46 = 6x +36 . Find the value of x.
Answer:
m=−57/92,x=−43/4
Step-by-step explanation:
Which graph shows how the Student distance from home changed over time
Answer:
there is no graph maybe post again
can anyone help me find the function for this trig graph ? 80 pts
Answer:
Find the amplitude which is half the distance between the maximum and minimum.
Find the period of the function which is the horizontal distance for the function to repeat. If the period is more than 2π then B is a fraction; use the formula period = 2π/B to find the exact value.
Find any phase shift, h.
Step-by-step explanation:
A block of concrete is 1m long, 50cm wild and 4cm thick. 1.calculate the volume of the block in cm3 .2.if 1cm has a mass of 2.7g, find the mass of the block in kg
9514 1404 393
Answer:
20,000 cm³54 kgStep-by-step explanation:
1 m is 100 cm, so the volume is ...
V = LWH
V = (100 cm)(50 cm)(4 cm) = 20,000 cm³ . . . volume
__
The mass is ...
(20,000 cm³)(2.7 g/cm³) = 54,000 g = 54 kg
The mass of the block is 54 kg.
Select the two expressions equivalent to 25 .
Answer: 2 primes 1 disinct
Step-by-step explanation:
A model of a building is made using a scale of 1 inch = 20 feet. What is the height of the actual building, in feet, if the height of the model is 10.5 inches?
Answer:
210.
Step-by-step explanation:
10.5 x 20 = 210
i hope that helps!!!
I don't know what the answer is.
Answer:
C.) 87
Step-by-step explanation:
if you look at it from the other side, its counting down from 91 from the left.
Answer: 87
No explanation :)
2. The more
there is in a waterproofing foundation coating, the better the performance.
O A. rubber
O B. foam
O C. asphalt
O D. fiberglass
WILL GIVE BRAINLIEST TO CORRECT ANSWER
Nico dropped the brand new bottle of dog shampoo and 3 ounces spilled out. He measures 1 1 - 1 ounces cach time he shampoos his dog and the bottle ol shampoo ongiinally contained ounces. Which is the correct equation and value of x, the number of times Nico can bathe hus dos using this one boule?
Answer:
Amount of shampoo in a bottle = 30 \frac{1}{2} 30
2
1
ounces
Amount of shampoo Nico uses in one bathe for his dog = 1 \frac{1}{4} 1
4
1
Since 3 ounces of shampoo is spilled out, the amount of shampoo left in the bottle will be = 27 \frac{1}{2} 27
2
1
If Nico can Bathe his dog x times using this bottle, the value of x can be written as:
x= \frac{27 \frac{1}{2} }{ 1\frac{1}{4} } x=
1
4
1
27
2
1
Using this equation we can find the number of times Nico can use the shampoo to Bathe . The value of x comes out to be 22.
Thus, Nico can Bathe his dog 22 times using the bottle
Nico dropped the brand new bottle of dog shampoo and 3 ounces spilled out. He measures 1 1/4 ounces each time he shampoos his dog and the bottle of shampoo originally contained 30 1/2 ounces. Which is the correct equation and value of x, the number of times Nico can bathe his dog using this one bottle?
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Jack rolls a fair number cube and spins the spinner. What is the probability that jack will get a number less than 4 and lands on blue?
Answer:
7.14%
Step-by-step explanation:
A fair number cube has 6 sides while a normal spinner has 7 different colors. In order to find the probability of Jack getting a number less than 4 and lands on blue, we need to find the probability of each individual event and multiply them together. Since the cube has six sides and 3 options that are less than 4 then the probability of getting less than 4 is 3/6. On the wheel there are 7 colors and only one is blue, therefore, the probability is 1/7. Now we multiply these fractions together.
[tex]\frac{3 * 1}{6 * 7} = \frac{3}{42}[/tex] or 0.0714 or 7.14%
Therefore, the probability of this event happening is 7.14%
The probability of this event is 7.14%.
What is the number of sides in a fair number cube?A fair number cube has 6 sides.
While a normal spinner has 7 different colors.
In order to find the probability of Jack getting a number less than 4 and lands on blue,
we have to find the probability of each individual event and then multiply them together.
The cube has six sides and 3 options that are less than 4 then the probability of getting less than 4 is 3/6.
On the wheel there are 7 colors and only one is blue.
Therefore, the probabilitiy is 1/7.
Now we multiply these fractions together.
[tex]\frac{3\times 1}{6\times 7} =\frac{3}{42}= 0.0714[/tex]
[tex]\frac{ 0.0714 }{100}=7.14\%[/tex]
Therefore, the probability of this event is 7.14%.
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