Answer:
12a^3+30a^2
Step-by-step explanation:
6a^2(2a+5)
12a^3+30a^2
Simplify (1-3i)-(2-i)
Step-by-step explanation:
(1-3i)-(2-i)=
1-2-3i+i=
-1-2i
1-2-3i+i
= -1-2i
Step-by-step explanation:
I simplified it in a simple way by arranging like terms together and did the calculation. Here the like term of 1 is -2 and for -3i it's i. so 1-2= -1 and -3i+i= -2i according to integers rule.
Please I need this ASAP
Answer:
10 people
Step-by-step explanation:
35+2x = 20+3.5x
15=1.5x
x=10
A chemistry teacher needs to mix an acid solution for an experiment. how much hydrochloric acid needs to be mixed with 1500 milliliters of water to make a solution that is 12% acid
The solution will be 180mL of hydrochloric acid.
What is a mixture?A mixture is a substance made up of two or more dissimilar chemical compounds that are not chemically linked in chemistry. When two or more substances are physically combined, their identities are maintained, and the mixture takes the shape of solutions, suspensions, or colloids.
Given a mixture is a substance made up of two or more dissimilar chemical compounds that are not chemically linked in chemistry. When two or more substances are physically combined, their identities are maintained, and the mixture takes the shape of solutions, suspensions, or colloids.
The amount of hydrochloric acid will be calculated as below:-
1500 x 12% = 180mL
Therefore, the solution will be 180mL of hydrochloric acid.
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what is a line graph
Answer:
A graph with points connected by lines to show how something changes in value:
• as time goes by,
• or as something else changes.
Step-by-step explanation:
Answer:
This is a line graph
Step-by-step explanation:
In the United States 13 out of every 20 cans are recycled what percentage of cans are recycled
Answer:
65%
Step-by-step explanation:
13/20 are recycled
We want a percent, which is out of 100
Multiply the top and bottom by 5
13*5 = 65
20*5 =100
65/100 = 65%
Answer:
65%
Step-by-step explanation:
I took the test
Airplanes are sometimes used to fight fires. A certain airplane can deliver 4 x 10 liters of water in one trip. How much water can this airplane deliver in 34
trips?
Write your answer in scientific notation.
Answer
1360
Step-by-step explanation:
4x10 is 40 so you'd have to multiply 40x34 which is 1360
136×10 is the amount of water used by the airplane to deliver 34
trips.
What is Multiplication?Multiplication is a method of finding the product of two or more numbers
Given that Airplanes are sometimes used to fight fires.
A certain airplane can deliver 4 x 10 liters of water in one trip.
We need to find how much water can the airplane deliver in 34
trips
Let us find the water used for one trip.
1 trip is 4 x 10 liters which is 40 litres.
Now we have to find for 34 trips.
We have to multiply 34 with 40 litres
34×40
Thirty four times forty
1360
Now we have to convert it to the scientific notation 136×10
Hence, 136×10 is the amount of water used by the airplane to deliver 34
trips.
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plz help i cant slove it
Answer:x=30
Step-by-step explanation:
So first you have to find x so add all your sides together:
Equation: 45+2x+0.5x+x=150
Combine like terms: 45+3.5x=150
Subtract 45 from -45 -45
both sides: 3.5x=105
Then divide by 3.5: x=30
Now that you have your x substitute it in:
2(30)=60
0.5(30)=15
and the last one is x=30
And there you have all your sides! If you wanna check it just add up all the sides and it should equal 150.
There are 8 boys and 3 girls from sixth grade in the marching band write 2 different ratios to compare the number of boys and the number of girls
__ : __ and __ : __
Answer:
8:3 and 3:8
Step-by-step explanation:
Consider the functions:
f(x) = (two-thirds) Superscript x
g(x) = (two-thirds) Superscript x minus 3 + 2
Which statement is true regarding the vertical and horizontal translations from f(x) to g(x)?
The function f(x) was translated left 3 units and up 2 units.
The function f(x) was translated right 3 units and down 2 units.
The function f(x) was translated left 3 units and down 2 units.
The function f(x) was translated right 3 units and up 2 units.
Answer:
The function f(x) was translated right 3 units and up 2 units.
Step-by-step explanation:
F(x)=(2/3)^x
If we move it right for 3 units, we get
f(x)= (2/3)^(x-3)
If we move up 2 units , we get
g(x)= (2/3)^(x-3) +2
Answer:
D
Step-by-step explanation:
Edge 2020
Describe the nature of the roots for this equation.
x² – 2x+1=0
O A. Two complex roots
O B. Two real, irrational roots
O C. Two real, rational roots
O D. One real, double root
Answer:
its d ok make me brialyisyt plssssss
Which value of x makes the equation 1.25(4x+2)=32.5
Answer: x=6
Step-by-step explanation:
What is the midpoint between -5,-4 and -3,3?
Answer:
(-4,-0.5)
Step-by-step explanation:
midpoint = ((x1+x2)/2, (y1+y2)/2)
= ((-5+-3)/2, (-4+3)/2)
= (-8/2, -1/2)
= (-4,-0.5)
Given (x – 1)2 = 50, select the values of x.
x = –49
x = 51
x= 1 + 5 (2
x= 1 - 5 (2
x= 1 + 5 √2
x= 1 - 5 √2
The values of x in the expression are x = 1 + √51 and x = 1 – √51.
We have,
Expanding the left side of the equation, we get:
(x – 1)2 = x2 – 2x + 1
So, we have:
x2 – 2x + 1 = 50
Subtracting 50 from both sides, we get:
x2 – 2x – 49 = 0
Now, we can use the quadratic formula to solve for x:
x = [2 ± √(22 – 4(1)(–49))] / (2)
x = [2 ± √(204)] / (2)
x = [2 ± 2√51] / (2)
x = 1 ± √51
Therefore,
The values of x are x = 1 + √51 and x = 1 – √51.
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How many solutions does this equation have ?
2(2x-1)=(x+1)+3(x-1)
sara 225 stamps and Jack has 180 stamps calculate jack stands as a percentage to Sara
Answer:
It is 80%
Step-by-step explanation:
180 divided by 225 = 80%
3-2(x + 1)=2x-7
SOLVE AND HOW MANY SOLUTIONS ?
Answer:
2
Step-by-step explanation:
3−2(x+1)=2x−7
3+(−2)(x)+(−2)(1)=2x+−7(Distribute)
3+−2x+−2=2x+−7
(−2x)+(3+−2)=2x−7(Combine Like Terms)
−2x+1=2x−7
−2x+1=2x−7
Step 2: Subtract 2x from both sides.
−2x+1−2x=2x−7−2x
−4x+1=−7
Step 3: Subtract 1 from both sides.
−4x+1−1=−7−1
−4x=−8
Step 4: Divide both sides by -4.
−4x−4=−8−4
x=2
Richard is planning a banquet for the wrestling
team. A restaurant charges $22 per person plus a
one-time fee for use of a private room. It costs $405
for 15 people. The total cost, y, is a linear function of
the number of x people.
Write an equation in slope-intercept form for this function?
i don't understand how to solve this 136 - (-128.6) =
Answer:
264.6
Step-by-step explanation:
Answer:
264.6
Step-by-step explanation:
ok first of all if you are subtracting a negative the it becomes a positive
136 - (-128.6)
136 + 128.6
this is what goes on in my head you don't have to do it this way but i do
100 + 100 = 200
30 + 20 = 50
6 + 8.6 = 14.6
200 + 50 + 14.6 = 264.6
Expression that represent -4 and 6
pls help me pls! thanks! will give brainliest
Answer:
4.5 is the range
Step-by-step explanation:
Ok, so it's asking for range, Range means The Highest number minus the smallest number.
What is the highest number? it's "2.3"
What is the lowest number? it's "-2.2"
so subtract those numbers and you get your answer!
Wait... why is the range 4.5? well, you do 2.3-(-2.2) when there are 2 minuses, you switch it to a + sign. so, 2.3+2.2=4.5!
If 5( 3×7)=20 then what is 6x-8?
George is in a book club. He earns 6 points for every 9 books he reads, and he needs to earn 24 points to receive a free book. How many points does he earn per book?
Answer:
36 books
Step-by-step explanation:
9=6
6*4=24 (9*4=36)
The prices of different items at a food
market are shown in the table above.
Ryan wants to buy 0.75 pounds of tuna
salad and 0.5 pounds of chicken salad.
How much does he spend to the nearest
cent?
Answer:
Step-by-step explanation:
The number of years that Seth has been on the soccer team is 2 less than 5 times the number of years that Mark has. In total, the boys have 10 years. How long has Seth been on the soccer team?
Answer:
8 years
Step-by-step explanation:
A student did an experiment to determine the number of letters recognized on an eye chart to see if it was affected by distance. What is the independent and dependent variable in this experiment?
Answer:
Independent variable: distance
Dependent variable: number of letters recognized on an eye chart
Step-by-step explanation:
Independent variables are stand-alone. This means that it does not depend on another variable but affects the dependent variable.
Dependent variables are dependent on another variable. When the independent variable changes, dependent variables are changed.
Since the hypothesis is that the distance affects the number of letters recognized,
the distance causes a change in the number of letters recognized not the other way around.
Thus, the dependent variable is the number of letters recognized on the eye chart while the independent variable is the distance.
Answer:
x and y
plz mark brainliest
The angle between 0 and 2π in radians that is coterminal with the angel 19π/4 in radians is what?
Answer:
29/24π
Step-by-step explanation:
To get coterminal angles, you simply have to add or subtract 2π
In this problem, we are looking for a coterminal angle that is between
0 and 2π, so we will add 2π to −19/24π.
−19/24π+2π
=
−19/24π+48/24π
=
29/24π
29/24π
is the answer to the question.
[tex]\frac{11\pi }{4}[/tex] is the coterminal between of [tex]\frac{19\pi }{4}[/tex] between (0, 2[tex]\pi[/tex]).
What is coterminal angle?
Coterminal angles are the angles that have the same initial side and share the terminal sides.
How to find the coterminal angles?To find the coterminal angle of an angle, we just add or subtract multiples of 360 degrees from the given angles.
According to the given question.
We have
Angle = [tex]\frac{19\pi }{4}[/tex]
Since, the coterminal angle is to be between 0 and 2π.
Therefore, we subtract 2π from [tex]\frac{19\pi }{4}[/tex]to get coterminal angle.
⇒ [tex]\frac{19\pi }{4} -2\pi[/tex] [tex]= \frac{19\pi -8\pi }{4} =\frac{11\pi }{4}[/tex]
Hence, [tex]\frac{11\pi }{4}[/tex] is the coterminal between of [tex]\frac{19\pi }{4}[/tex] between (0, 2[tex]\pi[/tex]).
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In September, 8 out of 10 days were rainy. How many total days in September were rainy? I Will Give You 15 Points
Answer:
8 days where raining out of 10. means 2 days where not raning so 8 days where raning and 2 was not.
Need help asap! Tysmmm
Answer:
109.6cm^2
Step-by-step explanation:
To find the area of a trapezoid the formula is (a+b)/2*h so for this problem, (12+15.4)/2*8= 27.4/2*8= 13.7*8=109.6cm^2
Hope this helped you out! :)
The graph of line is shown below. Yes
y
(-2,9) 81
6
41
21
(6.1)
X
4-2
2
4
6
8
Nol
-4
-61
-
What is the slope of line i?
Answer:
where is the graph??
Step-by-step explanation:
find the rate of interest when principal rs 6400 SIMPLE INTEREST RS 768 and time 2 years
Answer:
rate of interest is 6 percent per annum.
Step-by-step explanation:
Formula for simple interest is given
SI = p*r*t/100
where
SI is simple interest
p is principal
r is the rate of interest
t is the time
_______________________________
Given
p = 6400
SI = 768
t = 2 years
r we have to find
lest sue the above formula and plug the given value in it
768 = 6400*r*2/100
=> 768 = 128r
=> r = 768/128 = 6
Thus, r = 6%
thus, rate of interest is 6 percent per annum.
