what number sets or set does -5 belong to?
Answer:
-5 belongs to the set of Integers, Rational numbers, and Real numbers.
Find the factors in the expression: 3x( x +4)
A 3x, x and 4
B 3x and ( x + 4)
C 3, x and (x + 4)
D 3, X, X, and 4
can anyone pls tell me when do we cross multiply and when do we multiply 10 * 75 im really confused
You don't multiply liters of gasoline by distance.
They are directly proportional - the more gasoline you have the longer is the dictance you can go.
So it's cross multiply.
Another examlpe:
you are paid by hour for your work. The more hours you have worked, the more you are paid:
hours payment
2 h $36
5 h x
[tex]x=\dfrac{5\cdot36}2=90[/tex]
You would multiply 10•70 if they were inversely poportional values
For example:
1. speed and time of ride by given distance {the greater the speed the less time you need for a ride}
speed time
10 m/s 75 s
8 m/s x
[tex]x=\dfrac{10\cdot75}{8}=93.75\,s[/tex]
2. price and kolos of apples - the higher the pice the less of kilos you can buy by given cash
price kilos of apples
$2 8
$4 x
[tex]x=\dfrac{2\cdot8}{4}=4\,kg[/tex]
Simplify the expression and rationalize the demonimator when appropriate, please show steps : >
Answer:
[tex]=-3tv^2[/tex]
Step-by-step explanation:
So we have the expression:
[tex]\sqrt[3]{3t^4v^2}\sqrt[3]{-9t^{-1}v^4}[/tex]
To simplify, combine the two radicals. Since they have the same index, we can combine them. Thus:
[tex]=\sqrt[3]{(3t^4v^2)(-9t^{-1}v^4)}[/tex]
Combine like terms:
[tex]=\sqrt[3]{(3\cdot -9)(t^4\cdot t^{-1})(v^2\cdot v^4)}[/tex]
Multiply. When multiplying the exponents, simply add the exponents:
[tex]=\sqrt[3]{-27t^3v^6}[/tex]
Now, simplify. Note that -27 can be written as (-3)^3. t^3 can be written as (t)^3 and v^6 can be written as (v^2)^3. Thus:
[tex]=\sqrt[3]{(-3)^3(t)^3(z^2)^3}[/tex]
Combine them all under one exponent:
[tex]=\sqrt[3]{(-3tv^2)^3}[/tex]
Cancel out the cube root:
[tex]=-3tv^2[/tex]
And this is the simplest it can get.
And we are done :)
Edit: Typo
Answer:
-3v²t
Step-by-step explanation:
[tex]\sqrt[3]{3t^4v^2} \sqrt[3]{-9t^-1v^4}[/tex]
= [tex]\sqrt[3]{3t} \sqrt[3]{v^2t} \sqrt[3]{-9v^4t^-1}[/tex]
= [tex]\sqrt[3]{3t} (-\sqrt[3]{9v^4/t)} \sqrt[3]{v^2t}[/tex]
= - [tex]\sqrt[3]{3t} \sqrt[3]{v^2 9v^4/t}t[/tex]
= - [tex]\sqrt[3]{3} \sqrt[3]{9t} \sqrt[3]{v^6}[/tex]
= - [tex]\sqrt[3]{3*9}v^2t[/tex]
= - [tex]\sqrt[3]{27} v^2t[/tex]
= -3v²t
What are the first five multiples of 12?
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A multiple is a number that can be divided by that number with no remainder. For example, multiples of 5 are 5, 10, 15, and 20.
A multiple of 12 is basically 12 × (number of multiple), for example, if you want the second multiple of 12, you would multiply 2 by 12.
So multiply 12 by 1, 2, 3, 4, and 5.
12×1=12
12×2=24
12×3=36
12×4=48
12×5=60
The first five multiples of 12 are 12, 24, 36, 48, and 60.
━━━━━━━━━━━━━━━ ♡ ━━━━━━━━━━━━━━━
Answer:
12,24,36,48, and 60
What's (-7)+9 Ps. This is adding integers
Answer:
Step-by-step explanation:
When two integers are in different sign, subtract and the result will have the bigger number sign
-7 + 9 = 2
Subtract and the 9 is the bigger number and its sign is +. So, the result is = +2 or 2
A line that includes the point (0, 3) has a slope of 8. What is its equation in slope-intercept
form?
Need help
A line perpendicular
to y=5x+2
Answer:
5 x + 2
Step-by-step explanation:
Answer:
y = (-1/5)x + 2
Step-by-step explanation:
A line perpendicular to y = 5x + 2 would have a flipped opposite slope. Note the slope in the slope-intercept form:
y = mx + b
y = (x , y)
m = slope
x = (x , y)
b = y-intercept
Flip the slope:
y = 5x + 2
y = (-1/5)x + 2
y = (-1/5)x + 2 is your answer.
~
Kevin is looking for a job as a graphic designer. One ad lists a job that pays 64.6K. Another job he found has a weekly salary of $1,120. What is the difference in the weekly salaries of these two jobs? Round to the nearest dollar.
Answer:
The difference between the two weekly salaries is $122
Step-by-step explanation:
One job pays $64,600 per year. Since there are 52 weeks in a year, the weekly salary for this job is the quotient: $64600/52 = $1242.31 which rounded to the nearest dollar gives: $1242 per week
The other job pays $1120 per week. Therefore the difference in weekly salary for the two is:
$1242 - $1120 = $122
What are the angles in a 30˚- 60˚- 90˚ triangle after it is rotated 45˚?
Group of answer choices
75˚-105˚-135˚
30˚-60˚-90˚
None of the above
45˚-45˚-90˚
Answer:
The correct option is;
30° - 60° - 90°
Step-by-step explanation:
Rotation is one of the three rigid transformation of which others are reflection and translation. In a rotation transformation of a figure about a fixed point, known as the center of rotation, the figure is turned in a circular path about the fixed point or center of rotation. The size and shape of the pre-image the rotation are the same however, depending on the angle of rotation, their facing directions may be different. The specification of a rotation can be in the clockwise direction or in the anti-clockwise direction
The shape of the triangle in the question and the image are the same and are therefore congruent. All interior angles of the triangle and those of its rotation will therefore be congruent.
You have to simplify it
-2x+3-(5-6x)
Answer: 4x−2
Step-by-step explanation:
-2x+3-(5-6x) remove the parentheses
-2x+3-5+6x collect like terms
(−2x+6x)+(3−5) simplify to get 4x−2
Hope this helps, have a blessed and wonderful day! :-)
- Cutiepatutie
Answer:
4x - 2
Step-by-step explanation:
when there is a expression in parentheses, change the sign of each term in the expression
-2x + 3 - 5 + 6x
collect the like terms
-2x + 6x = 4x
3 - 5= -2
now put them together and you get
4x - 2
In the Mississippi River Delta, fresh water (0% salinity) mixes with salt water from the Gulf of Mexico (3 1 2% salinity). If 1,000 gallons of river water mixes with 3,000 gallons from the Gulf, how many gallons result, and what is its percent salinity? (Estimate a reasonable percent range for your answer before you solve.)
Answer:
The total resulting gallons of water is 4,000 gallons
The concentration of the resulting solution is 2.625% salinity
Step-by-step explanation:
The salinity of the fresh water from the Mississippi River Delta = 0%
The salinity of the water from the Gulf of Mexico = 3 1/2%
Therefore, if 1,000 gallons of river water mixes with 3,000 gallons from the Gulf, we have;
The total resulting gallons of water = 1,000 + 3,000 = 4,000 gallons
The total resulting gallons of water = 4,000 gallons
The concentration of the resulting solution is found as follows;
The concentration of the resulting solution = (3 × 3 1/2)/400 × 100 = 2.625%
The concentration of the resulting solution = 2.625% salinity.
Amanda Roberts works a Monday through Friday work week at a rate of $8.75 per hour. She takes a 1- hour lunch break. If she clocks in each day at 8:45 am and leaves at 5:15 pm, what is her total pay for the week?
Answer:
$328.13
Step-by-step explanation:
First, find the amount of time she works every day.
Between 8:45 and 5:15, there are 8.5 hours.
Subtract 1 for her lunch break, so there are 7.5 hours worked every day
Then, calculate how much she gets every day:
7.5(8.75)
= $65.625
Multiply this by 5 to find her pay for the week:
65.625(5)
= $328.13 is her total pay for the week
The total pay for the week will be $318.75.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
Amanda Roberts works a Monday through Friday work week at a rate of $8.75 per hour. She takes a 1- hour lunch break. If she clocks in each day at 8:45 am and leaves at 5:15 pm.
The number of hours from 8:45 am to 5:15 pm will be 8.5 hours.
And the number of working days will be 5.
Then the total pay for the week will be
⇒ $8.75 x 5 x (8.5 - 1)
⇒ $8.75 x 5 x 7.5
⇒ $318.75
The total pay for the week will be $318.75.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ2
The swimming pool near Maya's house charges $6.00 per visit. There is also a yearly pass available for $190.00. Maya is deciding whether
she should buy the yearly pass.
What is the fewest number of visits Maya must make to the pool so that the yearly pass will be less expensive than paying $6.00 per visit?
Answer: 31 times
Step-by-step explanation:
The way solve the problem is, you multiply $6.00 by 31 ( How I did it I multiply a lot of numbers by $6.00...) and you get $186.00. now 6 cannot fit in any further you have the cost, and the number of times Maya can go, without paying for the pass.
Umm okay this is IXL and I don’t know what to do???
Answer:
t⁹
Step-by-step explanation:
Whenever you multiply the same base with 2 different exponents, you add the powers together.
t⁴(t⁵)
4 + 5 = 9
t⁹
Answer:
Hey there!
a^b(a^c)=a^b+c
t^4(t^5)=t^9.
Let me know if this helps :)
(4 + 2i) + (-3 – 5i)
Answer:
(1 - 3 i)
Step-by-step explanation:
(4 + (2 * i)) + ((-3) - (5 * i)) =
Answer:
1-3i
Step-by-step explanation:
Dwayne had 136 songs on his phone. He deleted 56 songs. What is the
ratio of songs he kept to songs he deleted in its simplest form)?
Answer:
10 : 7
Step-by-step explanation:
Deleting 56 songs leaves 136 - 56 = 80 songs, thus
ratio of songs kept : songs deleted = 80 : 56 ( divide both parts by 8 )
80 : 56 = 10 : 7 ← in simplest form
1 Joan went to the bookstore. • At this bookstore, 3/4 of the books are fiction. • Of the fiction books, 1/3 are mystery books. What fraction of the books at the bookstore are mystery fiction books?
Answer:
1/4 would be mystery i think because 3/4 of them are fiction and 1/3 of them are mystery fiction.
Answer:
1/4
Step-by-step explanation:
What is 2,440 divided by 8 can you show your work please?
Answer: [tex]305[/tex]
Shown work is on the image below.
(3+x)^2 + 9 =36 Please help ASAP Brainliest & 15 pts
Answer:
x=0.0000−3.0000i
x=0.0000+3.0000i
Hoped I helped
Answer:
x = 3√3 - 3
x = -3√3 - 3
Step-by-step explanation:
(3+x)² + 9 = 36
(x + 3)² + 9 - 9 = 36 - 9
(x + 3)² = 27
x + 3 = 3√3
x + 3 = -3√3
therefore,
x = 3√3 - 3
x = -3√3 - 3
Use the figure below for questions 5-8.
5. Name a point coplanar to point K.
6. Name the intersection of plane R and JL.
7. Name three non-collinear points.
8. Give another name for line JK
Answer:
5. Both M and N (but u just need to choose one)
6. K
7. You can choose (K,M,N) ; (J,L,M) ; (J,L,N) ; (M,N,L) ; (M,N,K)
8. Line JL or KL
A line segment is also a line but a line with finite length and has fixed endpoints. A point coplanar to point K is point M.
What is a line?A line is a one-dimensional shape that is straight, has no thickness, and extends in both directions indefinitely.
A line segment is also a line but a line with finite length and has fixed endpoints.
The answers to the following questions can be given as shown below.
The coplanar point lies on the same plane. A point coplanar to point K is point M or point N.The intersection of plane R and JL is K.Three non-colinear points, (K,M,N) or (J,L,M) or (J,L,N) or (M,N,L) or (M,N,K).Another name for line JK is line KL or line JK.Hence, Another name for line JK is line KL or line JK.
Learn more about Line here:
https://brainly.com/question/21511618
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[tex]\frac{bt7}{4} =9[/tex]
Greetings from Brasil...
Isolating BT we get 36/7
What the range of the relation in the table below ?
Answer:
the first option
letter a 0,2, 4
Step-by-step explanation:
It is the only possible answer
Find the domain and range of the function represented by the graph. A Domain: −3
Answer:
Domain: (-3, 1]
Range: [-4, 0)
Step-by-step explanation:
Domain is all the x-values that can be plugged into the graph.
Range is all y-values that are outputted from inputting x.
We can see that our x-values span from -3 to 1. Since -3 is open dot, it is not included. Brackets signify inclusion.
(-3, 1]
We can see that our y-values span from -4 to 0. Since when x = -3 is open dot, the output y = 0 is also not included.
[-4, 0)
what is the value of x. 1.6(15x + 25)= -6x -5
Answer:
[tex]x = - \frac{3}{2} \: \: \: or \: \: - 1.5[/tex]Step-by-step explanation:
1.6(15x + 25)= -6x -5
Multiply the terms
That's
24x + 40 = - 6x - 5
Add 6x to both sides
24x + 6x + 40 = 6x - 6x - 5
30x + 40 = - 5
Subtract 40 from both sides
That's
30x + 40 - 40 = - 5 - 40
30x = - 45
Divide both sides by 30
We have the final answer as
[tex]x = - \frac{3}{2 } \: \: \: or \: - 1.5[/tex]Hope this helps you
Carlos is analyzing the results of a recent scientific study about gravity. Scientists recorded that the experimental value of gravity was 10.24 m/s² and the general accepted value of gravity is 9.81 m/s². Calculate the percent error of the experimental versus accepted values of gravity.
Answer:
The answer is 4.38.
Step-by-step explanation:
You take the experimental value and subtract the accepted value from it. then take that and divide it by the accepted value. When you get your you move the decimal point and round if needed.
Someone help me plzzzzzz
Answer:
Step-by-step explanation:
5x-4+7x-8=180
12x-12=180
12x=192
x = 16
5(16)-4= 80-4= 76 degrees
7(16)-8= 112-8= 104 degrees
9y + 5 = 104
9y = 99
y = 11
9(11) + 5 = 99 + 5 = 104
Renee knit a total of 39 centimeters of a scarf over 3 nights. How many nights will renee have to spend knitting in order to knit a total of 65 centimeters of the scarf
Answer:
5 nights
Step-by-step explanation:
39 divided by 3 = 13
so we divided 65 by 13 hence your answer 5 nights
Bill and gwyll are going on holiday to the USA. Bill changes £450 into $729 Gwyll changes £500 into $780 What exchange rate did bill get? What exchange rate did Gwyll get?
Answer:
Bill's exchange rate was $1 to £1.62
Gwyll's exchange rate was $1 to £1.56
Step-by-step explanation:
Given
Bill changed £450 into $729
Gwyll changes £500 into $780
Required
Determine their exchange rates
Exchange rate is calculated by dividing the currencies against one another.
Given that they both changed from pound to dollar, the exchange rate is calculated as thus;
[tex]Rate = \frac{Amount\ in\ pound}{Amount\ in\ dollar}[/tex]
Calculating Bill's Exchange Rate
[tex]Rate = \frac{\£729}{\$450}[/tex]
[tex]Rate = \frac{\£1.62}{\$1}[/tex]
Represent as a ratio
[tex]Rate = \£1.62:\$1[/tex]
Hence, Bill's exchange rate was $1 to £1.62
Calculating Gwyll's Exchange Rate, using the same formula and steps
[tex]Rate = \frac{\£780}{\$500}[/tex]
[tex]Rate = \frac{\£1.56}{\$1}[/tex]
Represent as a ratio
[tex]Rate = \£1.56:\$1[/tex]
Hence, Gwyll's exchange rate was $1 to £1.56
Ues the diagrams to solve for x and y.
please try to explain too please
Answer:
y=4 , x= 12
Step-by-step explanation:
This question deals with linear equations so, with this problem, subsitution is the easiest form of solving.
x + y = 16
8 + y = x
Now you know that x = 8 + y, so replace it in the opposing equation.
8 + y + y = 16 (simplfy)
8 + 2y = 16 (subtract 8 from each side)
2y = 8 (divide each side by 2)
y = 4
plug into other formula
8 + 4 = x
x =12
Answer:
y=4 , x= 12
Step-by-step explanation:
x + y = 16
8 + y = x
8 + y + y = 16 (simplfy)
8 + 2y = 16 (subtract 8 from each side)
2y = 8 (divide each side by 2)
y = 4
8 + 4 = x
x =12