Answer: $11.2
Step-by-step explanation:
Given
Cora bought 90 feet cable for [tex]\$25.20[/tex]
So, the price of a foot is the division of rate and length
[tex]\Rightarrow \text{Price P=}\dfrac{25.20}{90}\\\\\Rightarrow P=\$0.28\ \text{per foot}[/tex]
for additional 40 feet, the cost is
[tex]\Rightarrow 0.28\times 40\\\Rightarrow \$11.2[/tex]
Thus, Cora pays $11.2 for extra 40 feet
14. Twelve more than seven times a number equals the number less six
Answer:
The number is -3.
Step-by-step explanation:
Set up an equation:
Variable n = number
12 + 7n = n - 6
Assuming the question is solve for n, isolate the variable:
Subtract n from both sides:
12 + 6n = -6
Subtract 12 from both sides:
6n = -18
Divide by 6 on both sides:
n = -3
Check your work:
12 + 7(-3) = -3 - 6
12 - 21 = -3 - 6
-9 = -9
Correct
Mean: also called the average. The mean is found by adding all the numbers in the set and then dividing that total by the number of values in the set Median: is the middle value when the numbers are in order from least and greatest. If there are two numbers left in the center, add the 2 numbers together and then divide that total by 2. Mode: the number that is listed most often Range: the difference in the largest and the smallest number. 1. Given the data set 18, 3, 22, 30, 15 Find the following: Mean_________ Median_________ Mode____________ Range____________
Answer:
Mean: 17.6 Median: 18 Mode: N/A Range: 27
Step-by-step explanation:
Help please I don’t understand this! Giving brainliest!
Answer:
200
Step-by-step explanation
100+400=500 BUS
300+400=700 SPORTS
sports-bus
700-500=200
Answer:
300 + 400 = 700
Step-by-step explanation:
Play sports, : 300 + 400 = 700
Don't play, : 200 + 100 = 300
:)Can someone answer this
Answer:
6.50 + 5.75n
Step-by-step explanation:
6.50 for the first hour only being charged once and the 5.75 being for the number of hours (n) she works after the first hour
Answer:
B
Step-by-step explanation:
n is how many additional hours after the first hour she babysits. She charges $5.75 for each additional hour. So, that would be:
5.75n
But for the first hour, she charges 6.50. So that would be:
6.50+5.75n
Solve for x:
Plzzzzzzzzzz
Answer:
1: x=18 2: x=7 3: x=12
Step-by-step explanation:
1: 7x+3=9x-33
2x=36
x=18
2: 16x+(6x=26)=180
22x=154
x=7
3: (10x-17)-(2x-3)=90
8x-14=104
x=12
Answer and Step-by-step explanation:
1.
7x + 3 = 9x - 33
Subtract 7x from both sides, and add 33 to both sides of the equation.
36 = 2x
Divide both sides by 2.
x = 18
2.
6x + 26 + 16x = 180
Combine like terms.
22x + 26 = 180
Subtract 26 from both sides of the equation.
22x = 154
Divide 22 from both sides of the equation.
x = 7
3.
90 + 2x - 3 = 10x - 17
Add 17 to both sides of the equation, subtract 2x from both sides of the equation and combine like terms.
104 = 8x
Divide 8 from both sides of the equation.
x = 13
#teamtrees #PAW (Plant And Water)
w(x) = −3x− 4; Find w(7)
Step-by-step explanation:
Given
w(x) = - 3x - 4
Now
w(7) = - 3 * 7 - 4
= - 21 - 4
= - 25
Hope it will help :)❤
10)
1360°
A) 13.6 ft
C) 9.4 ft
B) 190.9 ft
D) 91.6 ft
Find the Arc Length of the circle above.
Answer: It's supposed to be A) 13.6 ft
2y - 3x + 6x - y
simplify this for me ?
Answer:
3x + y
Step-by-step explanation:
combine like terms
-3x + 6x = 3x
2y - y = y
Final Answer: 3x + y
PLEASE I NEED THIS ASAP! FIRST CORRECT ANSWER GETS BRAINLY!
the two dot plots below compare the forearm lengths of two groups of school children.
based on visual inspection of the dot plots, which group appears to have the longer average forearm length?
A. Group B, because five children have a forearm length longer than 12 inches.
B. Group B, because a child in the group has the least forearm length of 10 inches.
C. Group A, because no child in the group has a forearm length longer than 12 inches.
D. Group B, because four children in the group have the least forearm length of 10 inches.
Answer:
A ;)
Step-by-step explanation:
Person above was right.
hello please help i’ll give brainliest
Answer:
Number 2
Step-by-step explanation:
Predation refers to a flow of energy between two organisms, predator and prey. In this interaction, the prey loses energy, and the predator gains energy
Write an equation of the line below
I AM GIVING OUT BRAINIEST
do all those pls
Answer: 19, 18.71, 1. 19, 2. hundredth
Step-by-step explanation:
Round up as 7 is greater than 5, round up since 6 is greater than five, same as first
1. With the points
A(-4,-2) B(1, -3) C(2,-5) D(-1, 7).
What are the new points if the scale factor of dilation is 3?
Answer:
B': (-12,15)
Step-by-step explanation:
A rectangular room is 7 times as long as it's wide and it's perimeter is 64metres. Find the dimension of the room.
Answer:
Length = 28 meters Width = 4 metersStep-by-step explanation:
Assume the width of the rectangle is x. That means that the length of the rectangle is 7x which is 7 times as long as it is wide.
Perimeter of a rectangle:
= Length + length + Width + Width
Therefore:
7x + 7x + x + x = 64
16x = 64
x = 64/16
x = 4 meters
Length is 7 times as long:
= 4 * 7
= 28 meters
I AM GIVING OUT BRAINLIEST
Is (8, 3) a solution to the system?
- x + 4y = 4
- x + 3y = 1
Answer:
Step-by-step explanation:
You can either substitute (8, 3) into both equations as a test, or you can find the solution yourself.
Rewrite
- x + 4y = 4
- x + 3y = 1
as
- x + 4y = 4
+ x - 3y = -1
and combine like terms. The result is y = 3. Then -x + 4(3) = 4, or 8 = x.
Yes, (8, 3) is a solution of this SYSTEM.
The graph below shows the equation y=2x+4
2
In the space below, describe the effect on this graph if the equation were changed to y=3x+4
Answer:
C. the lines will be intersecting but neither parallel nor perpendicular
Step-by-step explanation:
changing the x coeficient means you're changing the gradien/ slope. so it will intersecting in one point of y if the x = 0
y = 2x + 4
y = 2(0) + 4 = 4
y = 3x + 4
y = 3(0) + 4 = 4
Answer:
Step-by-step explanation:
If you type this equation onto the graphing calculator you can clearly tell the lines intersect therefore the right answer is the last one.
3. in Figure 1, which of the following guarantees that alb?
A 2127
t
B. 325
C. 24 25
1 2
3 4
D. 24 27
5/6
78
Figure 1
pakii Ayus po
Step-by-step explanation:
favsywuwinswyuqoqpwieygsbsnwjqkqkhzvshqjqkjwhegwy
Identify the solution(s) of v2+11v−26=0.
Answer:
i solved for v and got
v = 2, -13
i hope this helps :]
A solid has 6 faces and 8
vertices. How many edges
does it have?
Euler's Formula: F+ V - E = 2
Fnter
Answer:
4 edges
Step-by-step explanation:
the shape is a cube
Answer: 12
Step-by-step explanation:
Euler’s formula: F + V - E = 2
6 + 8 - E = 2
14 - E = 2
You find E by subtracting 14 with 2
14 - 2 = 12
E = 12
Help please! will give brainliest
Answer:
exact volume= 12320ft³
approximate volume= 12308.8ft³
Step-by-step explanation:
exact volume= 22/7×14² x 20
approximate volume = 3.14x14²x20
can ace and expert help me in which number does 7 resent 10 times the value that it respesnts in 167 300
Answer:
D
7k*10=70k
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Because it is in the 4th place and x 10 moves it over 1 so in 5th place then
In tilton school there are 380 students in key stage 3 240 students in key stage 4 110 students in key stage 5 phoebe is carrying out a survey. she needs a sample of 100 students
Answer:
52
Step-by-step explanation:
Total Number of students :
Stage 3 : 380
Stage 4 : 240
Stage 5 : 110
Total = (380 + 240 + 110) = 730
Number of samples required = 100
Number of key stage 3 students required :
(Key stage 3 / total) * number of samples
(380 / 730) * 100
= 0.5205479 * 100
= 52.0547
= 52
The perimeter of a rectangular painting is 270 cm.
If the length of the painting is 82 cm, what is its width?
Width of the painting: []
Answer:
p/2 _l step 1. 270 ÷2= 135. 135- 82 = 53 width of the painting = 53
Find the solution of this system of equations. Separate the x- and y-values with a comma. x= -8+y -3x – 3y = 24
Answer:
(-8,0)
Step-by-step explanation:
X=-8+y equation 1
-3x-3y=24 equation 2
-3(-8+y)-3y=24 sub x value in equation into x value of equation 2
24-3y-3y=24
-6y=0
y=0
solve for x
x=-8+y
x=-8+0
x=-8
check answer:
-3x-3y=24
-3(-8)-3(-0)=24
24-0=24
24=24
Five points are plotted on the number line which point is opposite of point E
Answer:
Um, can you add the picture of the number line?
What is the value of x in the equation 2x + 3y = 36, when y = 6?
08
9
27
36
Please answer the following question:
Answer:
circumference=πd
3.142×(7.5+7.5)
3.142× 15
47.13
In order, range, median, mode and mean. Round the mean to the nearest tenth.
PLS HELP ASAP
Answer:
Range: 40
Median: 55
Mode: 72
Mean: 54.6
Step-by-step explanation:
First, let's put all of the numbers down.
32, 34, 35, 40, 41, 54, 54, 56, 63, 69, 70, 72, 72, 72
Now, to find the range, subtract 72 - 32 = 40
To find the median, find the number in the middle
32, 34, 35, 40, 41, 54, 54, 56, 63, 69, 70, 72, 72, 72
Because there are an even amount of numbers we will find the mean of those two numbers which would be 55.
To find the mode, look for the number that appears the most.
32, 34, 35, 40, 41, 54, 54, 56, 63, 69, 70, 72, 72, 72
To find the mean, add everything up.
32, + 34, + 35, + 40, + 41, + 54, + 54, + 56, + 63, + 69, + 70, + 72, + 72, + 72 = 764
Then, divide. 764 ÷ 14 = 54.6 when rounded to the nearest tenth.
I hope that this helps, and you have a great day! :)
Solve by graphing.
2x +y=1
x – 2y = 8
The solution to this system of equations is:
x-coordinate:
y-coordinate:
Given:
The given system of equations is:
[tex]2x+y=1[/tex]
[tex]x-2y=8[/tex]
To find:
The solution to this system of equations by graphing.
Solution:
We have,
[tex]2x+y=1[/tex]
[tex]x-2y=8[/tex]
The table of values for first equation is:
x y
0 1
1 -1
Plot the points (0,1) and (1,-1) on a coordinate plane and connect them a straight line.
The table of values for second equation is:
x y
0 -4
2 -3
Plot the points (0,-4) and (2,-3) on a coordinate plane and connect them a straight line.
The graphs of given equations are shown in the below figure.
From the below figure, it is clear that the lines intersect each other at point (2,-3). So, the solution of the given system of equations is (2,-3).
Therefore, the solution to this system of equations is:
x-coordinate: 2
y-coordinate: -3