Answer:
144i + 81
Step-by-step explanation:
(-3*9i)(-5 + 3i) + 9i
-27i (-5 + 3i) + 9i
FOIL
135i + 81 + 9i
144i + 81
7)
Lenny accidentally drops his matchbox car into a graduated cylinder. The car has a mass of 10 grams and the water level in the cylinder rises from 41 ml to 46 ml. Determine the density of the matchbox car. The formula for density is D =
m
v
.
A) 0.5 g/ml
B) 2 g/ml
C) 15 g/ml
D) 50 g/ml
Answer:
B
Step-by-step explanation:
Enter the number in scientific notation.
52,491 =
x10
Hint: Move the decimal left 4 places.
Answer:
5.2491
Step-by-step explanation:
I'm sorry if this is incorrect
Answer:
52,491 = 5.2491 * 10 to the 4th power
Step-by-step explanation:
52,491
Move 4 times to the left
Here it is step by step
1. 5249.1 ( moved one place over)
2. 524.91 ( moved over two places)
3. 52.491 ( moved over three places)
4. 5.2491 ( moved four places)
6x+9=2x+13 solve for x
Answer: 1
6x + 9 = 2x + 13 (remove the nine)
6x = 2x + 4 (remove the 2x)
4x = 4 ( divide by 4)
x = 1
9, 2, 1,5,9, 7, 1, 2, 2, 5, 6
What is the median for the set of data?
Answer:
3.5
Step-by-step explanation:
9, 2, 1,5,9, 7, 1, 2, 2, 5, 6
rearrange
1, 1, 2, 2, 2, 5, 5, 6, 9, 9
2+5=7
7/2=3.5
Answer:
its either 3.5
Step-by-step explanation:
1, 1, 2, 2, 2, 5, 5, 6, 7, 9, 9 basically see which number is in the middle basically your adding the middle and then dividing by 2 and eureka...
which is the equation of a line that has a slope of 1/2 and passes through point (2,-3)
Answer:
y = (1/2)x - 4
Step-by-step explanation:
y = mx + b
y = (1/2)x + b
-3 = (1/2)(2) + b
-3 = 1 + b
b = -4
y = (1/2)x - 4
cylindrical container has a height of 24 inches. Currently, the container is filled with water to a height of 18 inches. A leaky faucet drips into the container, causing the height of the water in the container to increase by 2 inches per hour. The equation below can be used to find t, the number of hours it would take to fill the container.
18 + ?t = 24
What number should be the coefficient of t?
Answer:6
Step-by-step explanation:
Answer:
6 would be the coefficient
Step-by-step explanation:
So what we are trying to do is solve for t.
18 + t = 24
-18 -18
t = 6
It would take 6 hours to fill the container.
Hope that helps and have a great day!
What is the value of x?
-36 + (-3x) = 0
Answer:
x = -12
Step-by-step explanation:
-36 + (-3x) = 0
___________
+36. +36
(add; addition poe)
______________
-3x = 36
_______
÷3 ÷3
(divide; division poe)
_______
-x = 12
______
×÷-1 ×÷-1
(multiply or divide by negative one to cancel out the negative; identity)
______
x = -12
four friends use an online coupon to get a $15 discount on each concert ticket buy. they spent $312 for the four tickets. what was the price of one ticket without the discount?
I do not know which formula is being used for this question, please answer step by step thanks!
The Hudson Record Store is having a going-out-of-business sale.CDs normally sell for $18.00.During the first week of the sale, all CDs will sell for $15.00.Written as a fraction, what is the rate of discount?What is the rate expressed as a percent?Round your answer to the nearest hundredth of a percent.During the second week of the sale, the same CDs will be on sale for 25% off the original price.What is the price of a CD during the second week of the sale?
Original Price = $18
Discounted Price = $15
Discount is $3 as 18-15 is 3.
As a fraction, the discount rate is $3/$18 also equal to $1/$6
What is the rate expressed as a percent? Round your answer to the nearest hundredth of a percent.1/6 is approximately 0.167
0.167 = 16.67%
As a percent, the discount rate is 16.67%
During the second week of the sale, the same CDs will be on sale for 25% off the original price. What is the price of a CD during the second week of the sale?Using the formula, Amount of Discount = Discount Rate · Original Price we can find the amount of discount for the 2nd week.
Let x be the amount of discount.
x = 25% · $18
x = $4.50
The amount of discount is $4.50
Calculate the cost of the CDs during the second week: $18 - $4.50 = $13.50
The price of a CD during the second week of the sale is $13.50
Identify all sets to which this number belongs: 6.14
Natural, Whole, Integer, Rational
Whole, Integer, Rational
Integer
Rational
Irrational
which one? please help!
Answer:
6.14 is Rational only
زن
What is the value of
[(2/3)^0]-3
Answer:
anything to the power of 0 is 1 so 1-3=-2
Step-by-step explanation:
7 Chris needs to cut a roll of twine into 16 equal lengths for a
project. If the roll of twine measures 900 inches, how long
will each length of twine measure?
Answer:
I am pretty sure it is 56 because all you have to do is dvided and it comes out to 56.25 but you cant have .25 because that is not an equal peice so yeah I think it is 56
Answer:56.25
Step-by-step explanation:I had same problem it was correct
Help ya girl out with this one please ASAP <3
Answer:
Hello!!! Princess Sakura here ^^
Step-by-step explanation:
[tex]6x+6x-7=5\\12x-7=5\\12x=12\\x=1[/tex]
A negative number is raised to an even exponent. The result is
zero
one
O positive
negative
Answer:
positive I guess that's the answer
Answer:
positive
Step-by-step explanation:
what is -4x+6y=21 on the graph
Answer:
Step-by-step explanation:
Write your answer with a positive exponent only.
Answer:
1/z
Step-by-step explanation:
(z^-6)/(z^-5)
=[(z^(-6+5)]
=z^-1
=1/z
What are both of these shaded as?
Answer:
1 whole and 15/100= 1.15
Step-by-step explanation:
The first box is 1 whole, in total there are 100 squares. All u need to do is count the number of squares
What is the total cost of a piano that costs $1200 with a markup of 75%
Answer:
900
Step-by-step explanation:
Does 4.5, 6, and 7.5 make a right triangle?
Answer:
yes.
Step-by-step explanation:
Christina is making a salad for a dinner party with 1.78 pounds of lettuce and 4.36 pounds of tomatoes.
How much more do the tomatoes weigh than the lettuce ?
A 2.58 pounds
B. 3.58 pounds
C. 4.18 pounds
D. 6.04 pounds
Answer:
A) 2.58 pounds
Step-by-step explanation:
To solve you would have to subtract the pounds of tomatoes from the pounds of lettuce. The equation would look like this,
4.36 - 1.78 = 2.58
Hope that helps and have a great day!
What is the constant rate of this? Please show your work.
Answer:
3
Step-by-step explanation:
To find the answer, heres what you need to do.
Basically, you divide each number on the right by the number on the left.
15/5= 3
24/8=3
36/12=3
72/24=3
Since all of the answers are 3, your answer is 3
Answer:
3
Step-by-step explanation:
Slope Formula:
y2 - y1/x2 - x1
Let's use (5, 15) and (8,24)
(x1, y1) = (5, 15)
(y1, y2) = (8, 24)
Substitute:
y2 - y1/x2 - x1
24 - 15/8 - 5
Solve:
24 - 15/8 - 5
9/3
= 3
Therefore the slope, or constant rate is 3.
Tip: look at the relationship between Cost and Time.
15/5 = 3
24/8 = 3
36/12 = 3
72/24 = 3
Dividing is a simple way to find the slope!
PLEASE HELP!!! I HAVE TO TURN THIS IN IN 5 MINS
what belongs in the blank spaces?
Answer:-2
Step-by-step explanation:
please need help by october 31, 2020 help!!!!!!
Answer:
1.)c=±√58
Step-by-step explanation:
According to Pythagorean theorem, square of the hypotenuse is equal to the sum of the squares of other two sides
a^2+b^2=c^2
Short sides-a and b
Long side=c
I will do number 1 for you as an example.
A=3
B=7
C=x
3^2+7^2=c^2
58=c^2
Dont forget to square 58
c=±√58
Help me please and thanks
In a standard Normal distribution, what percentage of observations lie between z = –1.08 and z = 0.92?
Answer:
68.11
Step-by-step explanation:
i think
Help please..........
Answer:
no solution
Step-by-step explanation:
if you solve for x then you get x-x which leads you to -6=0 that is no true and undefined
x-6=x
answer
x=6
why? pag nilipag mo yung negative 6 sa kanan . magiging positive sign na sya
Can somebody help me !!
Answer:
My answer would be $76.49 around that change somewhere? I'm hoping that I was close to the right answer. Wish there were answer options I could go off of.
Step-by-step explanation:
Suppose m is the line with equation y = −4 and ΔA'B'C is mapped to ΔA"B"C" by applying the glide reflection T3, 0 Rm.
What are the coordinates of ΔA″B″C″?
Answer:
The coordinates of ΔA''B''C'' are;
A''(-1, -3), B''(-2, -6), C''(1 , -7)
Step-by-step explanation:
A glide reflection involves the reflection of the preimage over a given line, followed by the translation of the resulting image along the given line
Given that the coordinates of the triangle ΔA'B'C' are;
A'(-4, -5), B'(-5, -2), C'(-2, -1), we have by reflection across the line y = -4
A''(-4, -4 + 1) = A''(-4, -3)
B''(-5, -4 - 2) = B''(-5, -6)
C''(-2, -4-3) = C''(-2, -7)
Translation of A''B''C'' by T 3, 0, we have;
A''(-4, -3) → T₃, ₀ → A''(-4 + 3, -3) = A''(-1, -3)
B''(-5, -6) → T₃, ₀ → B''(-5 + 3, -6) = B''(-2, -6)
C''(-2, -7) → T₃, ₀ → C''(-2 + 3, -7) = C''(1 , -7)
The coordinates of ΔA''B''C'' are therefore;
A''(-1, -3), B''(-2, -6), C''(1 , -7).
Answer:
A″(−1, −3), B″(−2, −6), C″(1, −7)
option A
Harriet’s goal is to weigh no more than 140 pounds. If x represents weight, write and inequality that describes her goal weight.
Answer:
x≤140
Step-by-step explanation:
A gold mine has two elevators, one for equipment and another for the miners. The equipment elevator descends 4 feet per second. The elevator for the miners descends 13 feet per second. One day, the equipment elevator begins to descend. After 33 seconds, the elevator for the miners begins to descend. What is the position of each elevator relative to the surface after another 12 seconds? At that time, which elevator is deeper?
Answer:
The position of the equipment elevator is 180 feet deep
The position of the miner's elevator is 156 feet deep
The equipment elevator is deeper.
Step-by-step explanation:
From the question,
For the equipment elevator
Velocity (v) = 4 feet/second
and for the miner's elevator,
Velocity (v) = 13 feet/second
To determine the position of each elevator, the position can be related to the distance covered.
From
Velocity = Distance / Time
Distance = Velocity × Time
Now, from the question,
The equipment elevator first descends for 33 seconds, after which the miner's elevator then start to descend both elevators descend for another 12 seconds. That is, the equipment elevator descends for a total of (33+12) seconds while the miner's elevator descends for 12 seconds.
Now, for the equipment elevator
Velocity = 4 feet/second
Time = (33 + 12 seconds) = 45 seconds
From
Distance = Velocity × Time
Distance = 4 × 45
Distance = 180 feet
The position of the equipment elevator is 180 feet deep
For the miner's elevator,
Velocity = 13 feet/second
Time = 12 seconds
Also, from
Distance = Velocity × Time
Distance = 13 × 12
Distance = 156 feet
The position of the miner's elevator is 156 feet deep
Hence, the equipment elevator is deeper.