Answer:
f(10)=2
Step-by-step explanation:
f(10) basically means you substitute 10 for x. SO you have f(10)= 1/2(10)-3. 1/2 times 10 equals 5 and 5 -3 is 2 so f(10)=2
What is the slope of the line that contains the points (4, 3) and (13, 6)
m=3
m=1/3
m=3/5
m=-3/5
From MATH workbook.
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 :)
Rewrite the equation in slope-intercept form. Then identify the slope and y-intercept.
a. 3x - 2y = 10
Answer:
Slope intercept form y= mx+b
y= 3/2x-5
slope= 3/2
y-int= -5
Step-by-step explanation:
Combine "like-terms" : 6x + 9y + 12x + 3y *
Answer:
18x + 12y
Step-by-step explanation:
Find 5.7 (-4.2) write your answer as a decimal
Answer:
-23.94 Please Mark Me Brainliest
Step-by-step
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.
Answer:
Total ratio=8
Length of the longest side=5/8×240
=150
Step-by-step explanation:
What is the unknown value
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.
Solve the system by substitution.
y=6x
y=3x+21
( , )
Answer:
(7,42)
Step-by-step explanation:
Imput the 6x for the Y:
6x=3x+21
move the variable to the left
6x-3x=21
collect like terms:
3x=21
divide both sides by 3x and youll get this for X
x=7
Imput x=7 into the equation
Y=6x7
solve:
y=42
match the vocabulary with its definition
prime number
composite number
prime factorization
factor tree
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.
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
What is the sum of 3x + 2y - z and -5x + 7y + z
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
What is the percent change from 14 to 21
Determine the sum of the areas of the three triangles shown above.
I will be there at the same time I don't hear
y = 6x - 17
3х - бу = -30
Answer:
the y one is 3.8
the 3x one is 6
Step-by-step explanation:
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
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.
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?
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.
You earned a 90% on a math test you answered 18 questions correctly how many questions were on the test
Answer: 20
Step-by-step explanation:
18/20 %90
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
Step-by-step explanation:
iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone iphone
What is 4 to the third power plus 8 to the second power
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.
In most cells there is a narrow window of time during-which DNA is synthesized.
Which of the following words, if it replaced the word “synthesized” in the sentence above, would CHANGE the meaning of the sentence¿
I dont know sorry but i bet someone else knows
pls help for brainlist
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
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
Answer:
the side between two angles in a triangle
CAN SOMEONE ANSWER THIS QUICKLY PLEASE??
Answer:
a
Step-by-step explanation:
it's a because a is not liner
kyle has 20% more money than jeff if kyle has $60 how much money does jeff have?
Answer:
Jeff has 72$
Step-by-step explanation:
60/20=3
3x12=36
36x2=72
Find an equation for the perpendicular bisector of the line segment whose endpoints
are (-8,7) and (4,3)
Which of the following 1/6 is closest to?
1/2
1
0
Answer:
0
Step-by-step explanation:
its closer to 0 then 1/2 and its closer to 0 than 1
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$
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!
Please help!! 15 Points!!!!
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
PLEASE HELPPPPPPPPPPPPP
What is the equation of the line passing through the points (-4,3) and (2,7)?
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]