Answers
Answer:
Step-by-step explanation:
1) elimination
2) elimination
3)add
4)subtract
5) Variable
6) add
7) eliminate
8) subtract
9) eliminate
10) adding
11) adding
12) 2
13)2
14) 0
15) (2 , 0)
16) (2 , 0)
17) solution
Related Questions
A band expects to put 15 songs on their next CD. The band writes and records 20% more songs than
they expect to put on the CD. During the editing process, 50% of the songs are removed. How many
songs will there be on the final CD?
There will be songs on the final CD.
Answers
Answer:
9 songs will be on the final CD
Step-by-step explanation:
The band writes and records 20% more songs than they expected to put on CD (they expected to put 15 on CD) , hence 3 more songs since 20% of 15 is 3 (= 15 × 0.20). A total of 18 songs is recorded.
During editing, 50% of the songs are removed, that is 9 (= 18 × 0.50).
Therefore, only 9 songs are left on CD (= 18 - 9)
The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Required percentage value = a
total value = b
Percentage = a/b x 100
The number of songs in the final CD is 9.
What is a percentage?
The percentage is calculated by dividing the required value by the total value and multiplying by 100.
Required percentage value = a
total value = b
Percentage = a/b x 100
Example:
50% = 50/100 = 1/2
25% = 25/100 = 1/4
20% = 20/100 = 1/5
10% = 10/100 = 1/10
We have,
The number of total songs.
= 15 + (20% of 15)
= 15 + (1/5 x 15)
= 15 + 3
= 18
Now,
The number of removed songs.
= 50% of 18
= 1/2 x 18
= 9
The number of songs on the final CD.
= 18 - 9
= 9
Thus,
The number of songs in the final CD is 9.
Learn more about percentages here:
https://brainly.com/question/11403063
#SPJ5
An example of a negative correlation is:
O The more time you workout, the less you weigh
The more time you workout, the bigger you muscles measure
The more time you workout, the more playing time you get
The more time you workout, the better your math grade will
Answers
Step-by-step explanation:
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From MATH workbook.
Answers
Answer:
C. -8
Step-by-step explanation:
-2^4 = 16
-2^-1 = -1/2
Answer:
-8
Step-by-step explanation:
Ok so lets first solve the first one:
[tex]-2^{4} = -2 x -2 x -2 x-2=[/tex] [tex]16[/tex]
[tex]x[/tex] represents times if that's confusing.
Ok so I got [tex]16[/tex] b/c if we multiply a negative times a negative we get positive. And there are 4 negatives not 3 not not 5 but 4 so we get positive.
Now second one:
[tex]-2^{-1} = - 0.5[/tex]
Now lets put it together!
[tex]-0.5 x 16=-8[/tex]
Hope this helps :)
What is the sum of 3x + 2y - z and -5x + 7y + z
Answers
Answer:
-2x + 9y
Step-by-step explanation:
(3x+2y-z)+(-5x+7y+z)
3x+2y-z-5x+7y+z
-2x+9y
Answer:
you would have add the x z
Step-by-step explanation:
add that first then do the numbers
There are 4 breakfast choices in a school cafeteria: Cereal, Granola Bar, Breakfast Sandwich, and Fruit. The percentage of students that chose cereal is 20%. If 60 students chose cereal, what is the total number of students that ate breakfast?
A.
120
B.
300
C.
320
D.
360
Answers
Answer:
300. In this case, it's very easy to do this percentage inflation. Since 20 is a multiple of 100, and we want to know the 100%, you just multiply the 20 by 5 to make it 100. Along with this, you multiply the 60 by 5 as well, which gives you 300.
Rewrite the equation in slope-intercept form. Then identify the slope and y-intercept.
a. 3x - 2y = 10
Answers
Answer:
Slope intercept form y= mx+b
y= 3/2x-5
slope= 3/2
y-int= -5
Step-by-step explanation:
Diegos uncle sells computers. In addition to his wages, he gets paid 20% of the amount he sells Why did he earn the extra 600$
Answers
Answer:
Diego's uncle earned $600 because he told $3000 worth of computers.
Step-by-step explanation:
100% divided by 20% = 5
$600 x 5 = $3000
I hope this helps!
What is 4 to the third power plus 8 to the second power
Answers
Answer:
128
Step-by-step explanation:
4*4*4=64
8*8=64
64+64=128
Answer:
128
Step-by-step explanation:
4 to the power of three is 4x4x4.
8 to the power of 2 is 8x8.
So your new equation would become (4x4x4)+(8x8)
4x4=16, then you have (16x4)+(8x8).
16x4=64. This gives you 64+(8x8).
8x8=64 which means you're doing 64+64 or 64x2.
Whichever equation you use your answer is the same.
64+64=128.
64x2=128.
Susie wants to buy some new shoes. The shoes normally cost $74, but with her employee discount they only cost $62.90 what is the percent does the discount take off
Answers
Answer:
The discount is 15%
y = 6x - 17
3х - бу = -30
Answers
Answer:
the y one is 3.8
the 3x one is 6
Step-by-step explanation:
A piece of carpet is 240cm long.
Mr Jones cuts it into three pieces in the ratio 1:2:5
Work out the length of the longest piece of carpet.
Answers
Answer:
Total ratio=8
Length of the longest side=5/8×240
=150
Step-by-step explanation:
PLEASE HELPPPPPPPPPPPPP
What is the equation of the line passing through the points (-4,3) and (2,7)?
Answers
Answer:
[tex]y = \frac{2}{3} x + \frac{17}{3}[/tex]
Step-by-step explanation:
First, find the slope of the line:
The formula for finding the slope is: [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]
Plug in the points:
[tex]\frac{7 - 3}{2 - (-4)}[/tex] = [tex]\frac{4}{6}[/tex] = [tex]\frac{2}{3}[/tex]
So now the equation is y = [tex]\frac{2}{3}[/tex]x + b
Now solve for b by plugging in one of the points:
(2,7)
y = [tex]\frac{2}{3}[/tex]x + b
7 = [tex]\frac{2}{3}[/tex]2 + b
7 = [tex]\frac{4}{3}[/tex] + b
b = [tex]\frac{17}{3}[/tex]
So the equation will be [tex]y = \frac{2}{3} x + \frac{17}{3}[/tex]
A person walks 2 1/2 miles in 1 1/4 hours. How long does it take them to run 1 mile?
Answers
Answer:
It takes him 30 minutes to run 1 mile.
Step-by-step explanation:
pls help for brainlist
Answers
Answer: 7/20
Step-by-step explanation:
3/4 - 2/5
= 3x5/4x5 - 2x4/5x4
=15/20 - 8/20
= 7/20
Hope it helped u,
pls mark as the brainliest
^_^
Answer:
15/20-8/20=7/20
Step-by-step explanation:
3/4-2/5 = 15/20-8/20 so
You earned a 90% on a math test you answered 18 questions correctly how many questions were on the test
Answers
Answer: 20
Step-by-step explanation:
18/20 %90
One card from a deck of cards Is selected, it's is replaced, and another card is chosen. What is the probability that the first card is a red card and the second is a diamond
Answers
Answer:
1/ 8
Step-by-step explanation:
Given that:
Number of red cards in deck = 26
Number of diamonds in deck = 13
Number of cards in deck = 52
Recall :
Probability = required outcome / Total possible outcomes
Probability of choosing a red :
P(red) = 26 / 52 = 1/2
With replacement :
Probability of diamond :
P(diamond) = 13 / 52 = 1/4
Hence,
Probability of first card red, then second card diamond equals
P(red) * P(diamond)
1/2 * 1/4
= 1/8
match the vocabulary with its definition
prime number
composite number
prime factorization
factor tree
Answers
composite number = positive integer, multiplying two smaller positive integers.
prime fact. = finding what the prime numbers are and then multiplying them.
factor tree = pretty self-explanatory. all of the numbers spread out into a way so that you can multiply them. for example, (image attached). hope this helps!!
What is the percent change from 14 to 21
Answers
50%
Explanation:
Where: 14 is the old value and 21 is the new value. In this case we have a positive change (increase) of 50 percent because the new value is greater than the old value.
kyle has 20% more money than jeff if kyle has $60 how much money does jeff have?
Answers
Answer:
Jeff has 72$
Step-by-step explanation:
60/20=3
3x12=36
36x2=72
What is meant by the phrase "included side?"
The side between two angles in a triangle
The side between two other sides in a triangle
The side between an angle and a side in a triangle
The angle between two sides in a triangle
Answers
Answer:
the side between two angles in a triangle
What is the unknown value
Answers
Combine "like-terms" : 6x + 9y + 12x + 3y *
Answers
Answer:
18x + 12y
Step-by-step explanation:
Please help!! 15 Points!!!!
Answers
Answer:
I think it is ether A are B
Answer: 1 solution
Step-by-step explanation: 3(
7
3
x+
4
3
)−2x+8=5x+12
all numbers are are solutions
Which of the following 1/6 is closest to?
1/2
1
0
Answers
Answer:
0
Step-by-step explanation:
its closer to 0 then 1/2 and its closer to 0 than 1
Find 5.7 (-4.2) write your answer as a decimal
Answers
Answer:
-23.94 Please Mark Me Brainliest
Step-by-step
A factory makes tissue boxes. When the net is folded to make the tissue box, the length is 25 cm, the width is 5 cm, and the height is 20 cm. How much cardboard material is used to make each tissue box?
Answers
Answer:
1450 cm
Step-by-step explanation:
A cardboard box is shaped like a rectangular prism.
To solve the above question, we apply the formula for Surface Area of a Rectangular Prism
A=2(wl+hl+hw)
Where
w = width = 5cm
I = length = 25cm
h = height = 20 cm
=2 × (5×25+20×25+20×5)
= 2(125 + 500 + 100)
= 2(725)
=1450 cm of cardboard material should be used.
Ben's Sports sells golf tees from a barrel by the scoop. The golf tees come in 5 bright colors mixed in the barrel. To determine what to charge for each scoop, Ben weighed 15 scoops. The weight of each scoop is shown in the line plot below. Use the line plot to answer the questions.
Answers
5:7 and 2:11 are in equal ratios? True OR False? *
Answers
Answer: false
Step-by-step explanation:
Please help! 50 points! btw brainliest!
Answers
Answer:
no idea just stealing the points because you reported my answer
Step-by-step explanation:
Determine the sum of the areas of the three triangles shown above.
Answers
I will be there at the same time I don't hear