Nata spent $28 on 2 DVDs. at this rate, how much would 5 DVDs cost? at what rate did she spend her money
Answers
2/28= 5/x and x would equal the amount of money she has to spend for 5 DVDs.
cross multiply then you'll get:
140=2x
x=70
She would have to pay $70 for 5 dvds.
Related Questions
a gardening company plants 10 trees in 2 hours how long will it take to plant 150 trees
Answers
10 trees / 2 hours = 5 trees per hour
150 trees / 5 per hour = 30 hours
A+B=44
A:B is equivalent to 4:7
what are A and B?
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And B would be 16
A is 16 and B is 28.
What is ratio?The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.
Given
A:B = 4:7
A + B = 44
Let the common factor between A and B is x
then
4x + 7x = 44
11x = 44
x = 4
Therefore,
A = 16
B = 28
Hence, 16 and 28 are A and B respectively.
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To reduce 32 grams of a 25% antiseptic solution to a 10% solution, how much distilled water should a pharmacist add?
Answers
8 grams is 10% of (8g)/0.10=80 grams
80 grams-32 grams=48 grams
ANSWER: You should add 48 grams of water to 32 grams of 25% solution to make a 10% solution.
Answer:
48 grams
Step-by-step explanation:
= 32 + 25 because 32 grams and 25 %
= 57 - 10 because there's 10%
= 47 + 1 because 10 ÷ 10 = 1
= 48
My teacher taught me it this way!☺
Show one way to count from 82 to 512
Answers
Expand and simplify [tex] (3x-2)^{2} [/tex]
Answers
1) Multiply the binomial by itself.
(3x - 2)^2 = (3x - 2)(3x - 2) =
Multiply every term of the first binomial by every term of the second binomial, then collect like terms. (This is often called using FOIL.)
= 9x^2 - 6x - 6x + 4
= 9x^2 - 12x + 4
2) Use the square of a binomial pattern
The square of a binomial is
(a - b)^2 = a^2 - 2ab - b^2
a^2 is the square of the first term.
b^2 is the square of the second term.
-2ab is the product of the two terms and 2.
You have
(3x - 2)^2,
where the first term is 3x, and the second term is -2
square the first term: 9x^2
square the last term: 4
the product of the terms and 2 is: -12x
Put it all together, and you get
9x^2 - 12x + 4
just like we got above with the other method.
What is the value of p in the equation p−18=38 ?
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multiply (-2/3)(1/6) as a simplified fraction
Answers
[tex]\left(-\dfrac{2}{3}\right)\left(\dfrac{1}{6}\right)=-\dfrac{1}{3}\cdot\dfrac{1}{3}=-\dfrac{1}{9}[/tex]
Heather is 8 years older than twice her nephew’s age. If Heather is 22 years old, how old is her nephew?
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Hope this helps!
what is the square root of negative 2 times the square root of negative 18. Please show work.
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-ve number*-ve number =+ve number
by the same way -2*-18 = 36
so the [tex]\sqrt[-2*-18]=\sqrt[36][\tex]
which is 6
please quick problem :)
One cold night the temperature was 0 degrees at 8 p.m. The temperature dropped at a constant rate from 8 p.m. to midnight. At midnight the temperature was −16.8 degrees. What was the temperature at 9 p.m.?
please T-T
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What's the function rule, I don't understand how to write a function rule using the ordered pairs in this table
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PLEASE HELPPPP
Find the measure of angle KLM.
This is an EXPLAIN YOUR THOUGHTS question which means you need to:
1) include the properties, theorems, etc. that you used to set up an equation.
2) Show the euqation you used to solve for x and thus solve for the angle measure of KLM
Answers
-------------------------------------
-------------------------------------
We'll use these properties:
Property 1: Linear pairs of angles are adjacent (touching) and supplementary. They form a straight angle. By definition they are supplementary meaning they add to 180 degrees.
Property 2: For any triangle, the three angles always add to 180 degrees
-------------------------------------
We need the measure of angle KLJ in terms of x.
Notice how KLJ and KLM form the straight angle JLM (which is 180 degrees). So we'll use property 1 mentioned above. Let's isolate angle KLJ to get...
(angle KLM) + (angle KLJ) = 180
(20x+4) + (angle KLJ) = 180 ... use the substitution property to replace angle KLM with its algebraic expression
angle KLJ = 180 - (20x+4)
angle KLJ = 180 - 20x-4
angle KLJ = -20x + 176
-------------------------------------
Now that we know angle KLJ, we can use this angle along with the angles JKL and KJL. Basically we're focusing on the smaller triangle on the left (the obtuse triangle)
Add those three angles up and set the result equal to 180 degrees. I'm using property 2 now.
(angle KLJ) + (angle KJL) + (angle JKL) = 180
(-20x+176) + (6x+4) + (8x+18) = 180
Therefore the equation we need to solve is: (-20x+176) + (6x+4) + (8x+18) = 180
Let's do so...
(-20x+176) + (6x+4) + (8x+18) = 180
-20x+176 + 6x+4 + 8x+18 = 180
(-20x+6x+8x)+(176+4+18) = 180
-6x+198 = 180
-6x+198-198 = 180-198
-6x = -18
-6x/(-6) = -18/(-6)
x = 3
After solving for x, we get x = 3
Let's use this to find the measure of angle KLM
angle KLM = 20*x+4
angle KLM = 20*3+4
angle KLM = 60+4
angle KLM = 64
The measure of angle KLM is 64⁰
What are supplementary angles?Supplementary angles are two angles whose measures add up to 180⁰ In other words, when placed adjacent to each other, they form a straight line.
From the figure
Given
<J = (6x+4)⁰
<K = (8x + 18)⁰
<KLN = 180 -(20x +4) (supplementary angles)
In Triangle KLN
<J + <K + <L = 180⁰(sum of angles in triangle)
Substitute
(6x + 4) + (8x + 18) = (20x + 4)(sum of 2 int.<s is equal to exterior<)
Simplifying
6x + 8x - 20x = 4 - 4 - 18
14x -20x = -18
-6x = -18
x = -18/-6
= 3
Substitute into (20x + 4) to find the measure of angle KLM
20x +4 = 20(3) + 4
= 60 + 4
= 64⁰
The measure of angle KLM is 64⁰
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Subtract -6 4 -6 0 6 4 - -5 5 -4 -1 6 -4
Answers
If so, here's my working out:
-6 - 4 = -10
-10 - -6 = -4
-4 - 0 = -4
-4 - 6 = -10
-10 - 4 = -14
-14 - -5 = -9
-9 - 5 = -14
-14 - -4 = -10
-10 - -1 = -9
-9 - 6 = -15
-15 - -4 = -11
The answer is -11.
Hope this helps!
Answer:
The result of the subtraction is [tex]\(57\).[/tex]
Explanation:
To subtract the numbers given, we need to add all the positive numbers and then subtract the sum of the negative numbers.
Positive numbers: [tex]\(6 + 4 + 6 + 4 + 5 + 5 + 6 = 36\)[/tex]
Negative numbers: [tex]\(-6 - 6 - 4 - 1 - 4 = -21\)[/tex]
Subtracting the sum of the negative numbers from the sum of the positive numbers:
[tex]\(36 - (-21) = 36 + 21 = 57\)[/tex]
So, the result of the subtraction is [tex]\(57\).[/tex]
A hole was dug 2 3/8 feet deep for a fence post. The fence post is 6 feet long. How far above the ground will the fence post be when it is placed in the hole? Enter your answer as a mixed number, in simplified form, in the box.
PLEASE ANSWER ASAP
Answers
[tex]\text{Answer: The fence post will be }3\frac{5}{8}\ feet\text{ far above the ground when it is placed in the hole.}[/tex]
Explanation:
Since we have given that
Length of hole dug for a fence post is given by
[tex]2\frac{3}{8}\ feet=\frac{19}{8}\ feet[/tex]
Length of the fence post = 6 feet
we need to find the length of the fence post above the ground is seen when it is placed in the hole.
So, Length of the fence post above the ground is given by
[tex]6-\frac{19}{8}\\\\=\frac{48-19}{8}\\\\=\frac{29}{8}\\\\=3\frac{5}{8}\ feet[/tex]
[tex]\text{Hence, the fence post will be }3\frac{5}{8}\ feet\text{ far above the ground when it is placed in the hole.}[/tex]
Is 1.47 irrational or rational
Answers
Using the numbers 5, 8, and 24, create a problem using no more than four operations (addition, subtraction, multiplication, division, square, square root, cube, cube root) where the solution will be an irrational number. Explain why the result of your operations is an irrational number?
Answers
-------=1.66
24
It's an irrational number because the decimal continues on forever
Combining like terms
simplify each expression
4n - n
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what is 4-1?
4n-1n=3n
Can I plz have brainliest?
does anyone know? im lost!
Answers
Find the equation of the line.
Use exact numbers.
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and the y intercept is at (0,3) that is y = 3 so b = 3
using the slope intercept form y = mx + b
m = 3 and b = 3
so answer is y = 3x + 3
Answer:
yup
Step-by-step explanation:
Simplify 12(A - B).
Answers
That's what I think.
someone please help me, and it says find the value of x and y.
and can someone help me do it step by step and explain it please
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Triangles are in total 180 degrees. The two triangles are basically 1 triangle split in half. If the triangle share the same side, has similar angles (shown by the curves on both sides at the top(Angle BAC and CAB), and has similar sides(shown by the hashes made in the lines AC & AB), you can conclude 'x' as a 90 degree angle.
To find y:
The measurment of the angle DCA is 47 degrees. For x, we concluded the answer to be 90 degrees, making the other side of the line 90 degrees as well.Since a triangle is 180 degrees, we can add 47 and 90 to get 137. Taking that answer, we subtract it from the value of 180 degrees to get 43 degrees. So y equals 43.
2 and 2/3 plus 4 and 2/5 = ?
Answers
When you add or subtract fractions, you find the common denominator
Which is 15
Leave the whole numbers out
Multiply 2/3 by 5 = 10/15 and multiply 2/5 by 3= 6/15
10/15+6/15= 16/15= 1 1/15
Now add the whole numbers
2+4+1= 7 1/15
So your final answer is 7 1/15
A lawyer charges his clients a consultation fee of $500 and $100 per hour to work on a case. This is represented by the linear function C = 100x + 500. If the lawyer increases his hourly rate to $150, how much more will he make on a 10-hour case? A) $250 B) $500 C) $750 D) $1000
Answers
10 hours with $50 more dollars per hour
10*50=500
The lawyer is making $500 more dollars for 10 hours
What’s 2(2x+10)=3(x+6)
Answers
Let's use the distributive property.
This means that you have to multiply the term in front of the parenthesis with every term inside the parenthesis.
After using the distributive property, you get
4x + 20 = 3x + 18
Now, subtract both sides by 3x
x + 20 = 18
Subtract both sides by 20
x = -2
That's your answer. Have an awesome day! :)
In a video game, Val scored 30% fewer points than Peeta. Peeta scored 1060 points. How many points did Val score?
Answers
1060-318=742
Val scored 742 points
1060 - 318 = 742
So, Val scored 742 points.
Your bank account has in it. You deposit $5 per day.
(a) How much money is in your account after 5 days? Show your work.
(b)After you have made all of your deposits, you withdraw $2 a day until your account balance is $0. How many days will you withdraw $2? Show your work
Answers
This is because 5 times 5 equals 25.
In skate boarding an ollie is a move in which the athlete pops the skateboard in the air, making it appear that the board and skateboarder are attached.At the 2009 X Games, one skateboarder completed 34 allies in 30 seconds. if he could keep up that rate, what would be his rate of allies per minute? What would be his rate per hour
Answers
The skateboarder's rate of ollies per minute would be 68 ollies per minute. The skateboarder's rate of ollies per hour would be 4080 ollies per hour.
Explanation:To find the rate of ollies per minute, we need to divide the number of ollies completed in 30 seconds by the number of seconds in a minute. In this case, the skateboarder completed 34 ollies in 30 seconds, so the rate of ollies per minute would be:
Rate per minute = (34 ollies / 30 seconds) × (60 seconds / 1 minute) = 68 ollies per minute
To find the rate of ollies per hour, we need to divide the number of ollies completed in 30 seconds by the number of seconds in an hour. In this case, the skateboarder completed 34 ollies in 30 seconds, so the rate of ollies per hour would be:
Rate per hour = (34 ollies / 30 seconds) × (3600 seconds / 1 hour) = 4080 ollies per hour
The table shows the number of balls, by sport, in the gym.
A. The ratio of soccer balls to all balls is 4:25
B. For every 10 balls in the gym, 3 are basketballs
C. None of the above
Answers
All the balls combined are 50 balls
8 of the balls are soccer balls so that makes the ration 8:50
In the simplest form it is 4:25 since you can't divide 4 or 8 by 50, you can use 2
and you get 4:25 as your answer
So it is A.
The ratio of soccer balls to all balls is 4:25.
Given that;
The table shows the number of balls, by sport, in the gym.
Now, We have;
Number of soccer balls = 8
And, Total number of balls = 50
Hence, The ratio of soccer balls to all balls is,
⇒ 8 : 50
⇒ 4 : 25
Thus, We get;
The ratio of soccer balls to all balls is 4:25.
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Help. Write the ratio as a unit rate.
Answers
Which expression is equivalent to 9x^5+3x(4x^4-3x^2)^2
Answers
Answer:
[tex]48x^9-72x^7+36x^5[/tex]
Step-by-step explanation:
The initial expression is:
[tex]9x^5+3x(4x^4-3x^2)^2[/tex]
First expand the squared part (inside the parenthesis):
[tex]9x^5+3x(4x^4-3x^2)(4x^4-3x^2)\\9x^5+3x(16x^8-24x^6+9x^4)\\[/tex]
Then, multiply the terms inside the parenthesis by 3x applying the distributive property:
[tex]9x^5+3x(16x^8-24x^6+9x^4)\\9x^5+48x^9-72x^7+27x^5[/tex]
Finally add terms with the same exponent
[tex]48x^9-72x^7+36x^5[/tex]
Answer:
D. 48x^9-72x^7+36x^5
Step-by-step explanation:
Just took it. Edg 2020. Hope this helps :)
Btw Look at you doing your school work looking smart! I see youuu! (even if you are cheating a lil but its ok im doing the same xD)