Answer:
69
Step-by-step explanation:
167-152=15
This is the number of people that only brought pens
167-84=83
This is the number of people that only brought pencils.
167-15-83=69
This is the number of people that brought both pencils and pens.
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
PLEASE HELP!!
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match each equation of the piecewise function represented in the graph to its corresponding piece of the domain.
f(x) = 2 − x
f(x) = 3
f(x) = x
f(x) = 2
f(x) = 4
f(x) = 1
f(x) = -x
Domain Function Equation
0 < x ≤ 1 arrowRight
3 < x ≤ 4 arrowRight
2 < x ≤ 3 arrowRight
1 ≤ x ≤ 2 arrowRight
The domain and the corresponding functions are:
Function: f(x) = 3; Domain: 2 < x ≤ 3Function: f(x) = x; Domain: 1 ≤ x ≤ 2 Function: f(x) = 4; Domain: 3 < x ≤ 4Function: f(x) = 1; Domain: 0 < x ≤ 1What is domain?The domain of a function is the set of input values the function can take. This means that the domain is the x values of a function
Using the above definition of domain, the domain and the corresponding functions are:
Function: f(x) = 3; Domain: 2 < x ≤ 3Function: f(x) = x; Domain: 1 ≤ x ≤ 2 Function: f(x) = 4; Domain: 3 < x ≤ 4Function: f(x) = 1; Domain: 0 < x ≤ 1Read more about domains at:
https://brainly.com/question/11860069
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:)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
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.
HELP NEEDED ASAP!!! FASTEST CORRECT ANSWER GETS BRAINIEST!!!
Determine which of the following sampling methods is the best way to select a group of people for a study if you are interested in making statements about the larger population?
•Convenience sampling
•Random sampling
•Purposive sampling
•Quota sampling
Answer: C. Purposive Sampling
Step-by-step explanation:
This sampling is the use of a portion of the population to represent the whole or larger population. If you wanted to make statements about the larger population this would be the best way to go about it.
Please help me! Best answer gets brainliest!
Answer:
Step-by-step explanation:
Answer:
This probably isn't much help but I got xy^5. It isn't on the multiple-choice but xy^6 is the closest to my answer so I would guess it's that.
step-by-step explanation:
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
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:
There are 60 boys in the third year, 24 of whom study chemistry. What percentage of third year boys study chemistry.
Answer:
40%
Step-by-step explanation:
24/60 = .4
Answer:
40%
Step-by-step explanation:
Divide the total by the amount possible.
What is the value of x in the equation 2x + 3y = 36, when y = 6?
08
9
27
36
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?
Please answer the following question:
Answer:
circumference=πd
3.142×(7.5+7.5)
3.142× 15
47.13
in hiw many ways can the letters of the word AZUCARERA be arranged
Answer:
30240 arrangements
Step-by-step explanation:
9!/(2!×3!)
Find the value of x.
M M
(2x
10)
(2x + 40)
N
X=
Answer:
Could you state the question in the correct order?? Like is N supposed to be there?
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
a rectangle has sides of length 2 millimeters and 8.1 millimeters. What is the perimeter?
Answer:
20.2 mm.
Step-by-step explanation:
2*2 + 2*8.1
= 4 + 16.2
= 20.2 mm.
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 :)❤
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
Please help me answer this!!
To solve for m, divide both sides by 5/6
M = 85/ 5/6
When dividing by a fraction flip the fraction over and multiply
M = 85 x 6/5 = (85 x 6)/5 = 510/5 = 102
He drove 102 miles on Monday
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.
Whats the value of x?
Answer:
x=3
Step-by-step explanation:
both of the two sides equal the same so it would be 3x=9x-18
solve you get x=3
NEED HELP NOW. WILL GIVE BRAINLIEST
These prisms are similar. Find the surface
area of the larger prism in decimal form.
5 m
7 m
Surface Area = 90 m2
Surface Area = [? ] m2
Enter
Answer:
176.4
Step-by-step explanation:
1.) 7/5 = surface area/90 = (7/5)^2 = 49/25
2.) sa/90 = 49/25
3.) 4,410/25a
Surface area is 176.4
Hope this helps!
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:
Identify the solution(s) of v2+11v−26=0.
Answer:
i solved for v and got
v = 2, -13
i hope this helps :]
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
What is the equation of a line parallel to y=-3/2x+9
Answer:
y = - [tex]\frac{3}{2}[/tex]x
Step-by-step explanation:
Parallel lines are two lines that have the same plane and slope but never intersect.
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
PLEASE HELP ME, ILL GIVE BRAINLIEST AND 50 POINTS
Answer:
h=8
Step-by-step explanation:
a²+b²=c²
a=A
b=12
c=13
therefore substitute
A²+(12)²=(13)²
A²=13²-12²
A²=25
A=5
h=3+A
h=3+5
h=8
Answer:
8 ft
Step-by-step explanation:
since it is a right angled triangle and you have 2 side lengths, we use the pythagoras theorem here.
a² + b² = c²
the c² is always your hypotenuse (longest side of the triangle, also opposite to the right angles)
*the b and a doesnt matter which order you put it in*
so; (sub in the numbers to the formula)
a² + 12² = 13²
(rearrange - like terms together)
a² = 13² - 12²
(calculate it)
a² = 25
(simplify it - get rid of the ² on the a)
a = √25
(solve)
a = 5
so, we know that a = 5 and we know that we have an additional 3
5 + 3 = 8
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