70 is the mean
95+84+31 =210
210/3 = 70
Maya bought a dozen specialty donuts at the bakery for $18. She purchased a mixture of frosted donuts for $2 each, glazed donuts for $1 each, and custard filled donuts for $5 each. If Maya purchased twice as many frosted donuts as custard filled donuts, how many of each type of donut did she buy? Variables: mixture of frosted donuts X y = glazed donuts Z = custard filled donuts System: System in standard form:
Answer:
The quantity of frosted donuts = 2
The quantity of glazed donuts = 9
The quantity of custard filled donuts = 1
Step-by-step explanation:
Let the quantity of frosted donuts = [tex]x[/tex]
Let the quantity of glazed donuts = [tex]y[/tex]
Let the quantity of custard filled donuts = [tex]z[/tex]
As per question statements, following equations can be made:
[tex]x+y+z=12......(1)\\2x+y+5z=18.....(2)\\x=2z ...... (3)[/tex]
Putting [tex]x=2x[/tex] in (1) and (2):
[tex]y+3z=12 .... (4)\\y+9z=18 .... (5)[/tex]
Subtracting (4) from (5):
[tex]6z=6\\\Rightarrow z =\bold{1}[/tex]
By equation (3):
[tex]x=\bold{2}[/tex]
By equation (1):
[tex]y=\bold{9}[/tex]
Therefore, the answers are:
The quantity of frosted donuts = 2
The quantity of glazed donuts = 9
The quantity of custard filled donuts = 1
5. Find LK
Plz help it’s co confusing
LK + KJ = 43
LK + 25 = 43
LK = 43 - 25
LK = 18
_________________________________
And we're done.....♥️♥️♥️♥️♥️
x and y intercepts for -4x+2y=6
Answer:
y-intercept = 3
x- intercept = -1.5
Step-by-step explanation:
-4x + 2y = 6
+4x + 4x
2y = 4x + 6
2 2
y = 2x + 3
Graph then you would get the coordinates of (0, 3) and (-1.5, 0)
Answer:
x intercept: (-3/2,0)
y intercept:(0,3)
Step-by-step explanation:
Explain what the vertical line test is and how it is used.
Answer:
Sample Response: The vertical line test is a way to determine if a relation is a function. This test determines if one input has exactly one output on the graph. If any vertical line passes through more than one point on the graph, then the relation is not a function because two different outputs have the same input.
Step-by-step explanation:
I just got the sample response.
The vertical line test is a method used to determine whether a graph represents a function or not.
The vertical line test is a method used to determine whether a graph represents a function or not. It is a visual tool that helps identify if there is a unique output for every input value in a given graph.
To perform the vertical line test, imagine a vertical line that can be moved across the graph. If the vertical line intersects the graph at only one point for every possible position, then the graph represents a function.
In other words, if no vertical line passes through the graph in more than one location, the graph passes the vertical line test and is considered a function.
The vertical line test is a simple and effective way to check if a graph represents a function visually. It helps determine the relationship between the input and output values and identifies whether there is a one-to-one correspondence or not.
Learn more about Vertical Line test here:
https://brainly.com/question/29263148
#SPJ2
Please helpppp need this done right nowwwe
Answer:
1. Given
2. Similar Lines(given in diagram)
3. Vertical Angles
4. SAS(or Side-Angle-Side)
Step-by-step explanation:
1 is given because that is whats given to you.
2 is Similar Lines because, on the diagram, when a line has a small dash on it and another line has the same dash, this means that they are similar.
3 is Vertical Angle because a vertical angle is an angle that is reflective of another angle and, according to the Vertical Angle Theory, all vertical angles are equal.
4 is SAS because you always go counterclockwise on the triangle when finding the congruent abbreviation and her you can see it is Side(LN=NW), Angle(LNS=WNK), Side(SN=NK).
Help please on number 2 math problem.
Answer:
Its's $3 for an adult ticket and $1 for a student ticket
Step-by-step explanation:
ANSWER ASAP ILL GIVE A LOT OF POINTS
Answer:
addition or subtraction (1.)
Step-by-step explanation:
Answer:
Divide both sides by a constant to simplify the equation. Thus the second option.
Step-by-step explanation:
Solve for x:
9 - 10 x = -1
Hint: | Isolate terms with x to the left hand side.
Subtract 9 from both sides:
(9 - 9) - 10 x = -9 - 1
Hint: | Look for the difference of two identical terms.
9 - 9 = 0:
-10 x = -9 - 1
Hint: | Evaluate -9 - 1.
-9 - 1 = -10:
-10 x = -10
Hint: | Divide both sides by a constant to simplify the equation.
Divide both sides of -10 x = -10 by -10:
(-10 x)/(-10) = (-10)/(-10)
Hint: | Any nonzero number divided by itself is one.
(-10)/(-10) = 1:
x = (-10)/(-10)
Hint: | Any nonzero number divided by itself is one.
(-10)/(-10) = 1:
Answer: x = 1
90 minus 50 divided by 5 times 6 plus 2
Anwer:32
Step-by-step explanation:
Answer:
32
Step-by-step explanation:
To find out what to do first, use PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, ans Subtraction)
Now it should look like this: (90-((50/5)*6)) + 2
First, divide 50 by 5 and get 10
So now it will be like this: (90-(10 x 6) + 2
Next, multiply 10 by 6 and you'll get 60.
The problem is looks like this: (90 - 60) + 2
Then, subtract 60 from 90 and get 30.
30 + 2
Lastly, add 30 and 2 to get 30.
Hope this helps.
Write the standard form of the equation of the circle with radius 7 and center (4,−9).
Answer:
x^2 + y^2 - 8x + 18y + 48 = 0
Step-by-step explanation:
(x-h)^2 + (y-k)^2 = r^2 where (h,k) is the centre of circle and r is the radius of circle. hence the standard form of equation can be obtained by expanding
(x-4)^2 + {y-(-9)}^2 = 7^2
Write the equation of a line that is perpendicular to y=1/2x-6 that passes through the point (6,4)
Answer:
y=-2x
Step-by-step explanation:
Hope this helps! :)
6th grade math I mark as brainliest
Answer:
2 3/10
Step-by-step explanation:
9 9/10 - 7 3/5
Answer:
b
Step-by-step explanation:
you would subtract and get answer
Paul bought 2.25 meters of wood to make 5 shelves of equal length . What is the length of each shelf ? show your work on a picece of paper
Answer:
Length of each shelf is 0.45 meters
Step-by-step explanation:
Given
[tex]Total\ Length = 2.25\ meters[/tex]
[tex]Shelves = 5[/tex]
Required
Determine the length of each shelf
This is calculated by dividing the total length by number of shelves as thus:
[tex]Length = Total\ Length/Number\ of\ Shelf[/tex]
[tex]Length = 2.25m /5[/tex]
[tex]Length = 0.45m[/tex]
Hence;
Length of each shelf is 0.45 meters
Answer:
0.45
Step-by-step explanation:
Which equation represents a line that is parallel to the
line shown on the graph?
Answer:
I need a picture or example to answer
Step-by-step explanation:
Which is bigger 9 to the 27th power or 3 to the 81 power
f(x)=-7x2+8x+2 how many x-intercepts does the graph of f have
The graph has 2 intercepts, as it is a parabola with a degree of 2.
Simplify the equation
What is the value of
2 1/4 (-4.5)
Answer:
9/5x-45/10=-81/10=-8.1
Step-by-step explanation:
plz someone help on this question
Answer:
Hi there!
Your answer is:
1050 liters per 6 days
Step-by-step explanation:
350liters per 2 days
*3 to determine 6 days
1050 liters per 6 days
Hope this helps
Answer:
1050
Step-by-step explanation:
350 liters per 2 days
to get 6 days you will need to multiple 2 by 3
you need to do that to 350 too
350 x 3 = 1050
your ration is 350:2
make it to
1050:6
let me know if you need more help
A shape is shown on the graph
Which of the following is a reflection of a shape?(50 points)
A coordinate grid is shown from positive 8 to negative 8 on the x-axis and from positive 8 to negative 8 on the y-axis. A triangle is shown on ordered pair 2, 2 and 4, 2 and 2, 6.
Step-by-step explanation:
Find the missing side and angle indicated in the picture. Round your answers to the nearest tenth.
Enter your answer as equations separated by a comma.
Answer:
AC = 30 in
m∠B = 36,9°
m∠A = 53,1°
Step-by-step explanation:
1 AC
You gan get AC with the pythagorean theorem:
a²+b²=c²
We are looking for side b of the triangle, so the equation is rearranged for b.
BC²+AC²=AB² | -BC²
AC²=AB²-BC²
AC=√(AB²-BC²)
Now the given values are used:
b=√(50²-40²)
b=√(2500-1600)
b=√900
b=30 in
2 m∠B
This angle can be calculated using the sine law:
sine(angle)=opposite cathete/hypothenus
We are looking for angle m∠B of the triangle.
sin(m∠B)=AC/AB
sin(m∠B)=30in/50in
sin(m∠B)=0,6
m∠B=36,9°
3 m∠A
This angle can be calculated using the sine law:
sine(angle)=opposite cathete/hypothenus
We are looking for angle m∠A of the triangle.
sin(m∠A)=BC/AB
sin(m∠A)=40in/50in
sin(m∠A)=0,8
m∠A=53,1°
Which is the answer please?
Answer:
where is the answer
Step-by-step explanation:
please answer and show
Answer:
[tex]x\in (-\infty,11][/tex]
Step-by-step explanation:
Inequalities
Solve the following inequality:
[tex]-3x+14\ge 3-2x[/tex]
Adding 2x:
[tex]-3x+14+2x\ge 3[/tex]
Subtracting 14:
[tex]-3x+2x\ge 3-14[/tex]
Operating:
[tex]-x\ge -11[/tex]
Multiplying by -1 and flipping the sign:
[tex]x\le 11[/tex]
Solution:
[tex]\boxed{x\in (-\infty,11]}[/tex]
Evaluate the function.
f(x) = -x^2+ 7x - 13
Find f(-3)
. A random sample of 100 children with working mothers showed that they were absent from school an average of 6 days per term with a standard deviation of 1.6 days. Provide a 98% confidence interval for the average number of days absent per term for all the children. a. Write down the equation you should use to construct the confidence interval for the average number of days absent per term for all the children. (10 points) b. Determine a 98% confidence interval estimate for the average number of days absent per term for all the children. (10 points)
Answer:
a) The equation is:
Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples
b) The 98% confidence interval = (5.62784, 6.37216)
Step-by-step explanation:
a. Write down the equation you should use to construct the confidence interval for the average number of days absent per term for all the children. (10 points)
Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples
b. Determine a 98% confidence interval estimate for the average number of days absent per term for all the children. (10 points)
Confidence Interval = Mean ± Z score × Standard deviation/√Number of samples
Mean = 6 days
Standard deviation = 1.6 days
Number of samples = 100
Z score of 98% confidence interval = 2.326
Confidence interval = 6 ± 2.326 × 1.6/√100
= 6 ± 2.326 × 1.6/10
= 6 ± 0.37216
= 6 - 0.37216
= 5.62784
6 + 0.37216
= 6.37216
Therefore, the 98% confidence interval = (5.62784, 6.37216)
Which of the following graphs represents the equation y=2x−3?
Answer:
D. (the one in the right hand bottom corner)
Answer:
Bottom right
Step-by-step explanation:
The equation is y = 2x - 3
2 represents the slope
-3 represents the y-intercept
The y-intercept is when x = 0
So first, we look at the graphs and find the graphs that display when x = 0, y = -3 aka (0, -3)
From this, we can deduce the two graphs on the left side are wrong
It must be the two on the right
Now we figure out which one has a slope of 2 aka rise over run = 2/1
Which graph goes up (rises) 2 units and goes forward (runs) 1 unit?
The top right graph depicts a slope of 1/2, not 2/1 so this is incorrect
The bottom right graph displays a slope of 2/1 aka 2
Bottom right graph is the correct answer
help this is overdue
35 <7(2−b) or 13(15b−12)≥21
35 < 7 ( 2-b ) or 13 ( 15b-12)>= 21
35 < 14 - 7b or 195 b - 156 >= 2
35-14<-7b or 195b >= 2 + 156
21 < -7b or 195 b >= 158
b < 21/-7 or b>= 158/195
b < -3 or b >= 158/195
The simplification form of the inequality 35 <7(2−b) or 13(15b−12)≥21 is b < -3 or b ≥ 158/195.
What is inequality?It is defined as the expression in mathematics in which both sides are not equal they have mathematical signs either less than or greater than known as inequality.
It is given that:
The inequality is:
35 < 7(2 − b) or 13(15b − 12) ≥ 21
After simplification:
35 < 14 - 7b or 195 b - 156 ≥ 2 (using distributive property)
35-14<-7b or 195b ≥ 2 + 156
21 < -7b or 195 b ≥ 158
b < 21/-7 or b ≥ 158/195 (division property of equality)
b < -3 or b ≥ 158/195
Thus, the simplification form of the inequality 35 <7(2−b) or 13(15b−12)≥21 is b < -3 or b ≥ 158/195.
Learn more about the inequality here:
brainly.com/question/19491153
#SPJ2
is 0.007 times 10 equivalent to 0.07
Answer:
Yes they are equivalent since you multiply by 10, you move the decimal place one spot to the right. It is very simple.
Step-by-step explanation:
Hope I could help :D
6.) Consider the functions f(x) = -2x + 1 and g(x) = 4x - 5
find f(3)
Answer:
[tex]f(3)=-5[/tex]
Step-by-step explanation:
We have the functions [tex]f(x)=-2x+1[/tex] and [tex]g(x)=4x-5[/tex]
We want to find [tex]f(3)[/tex]. So, we can use our first function.
Substitute 3 for x. This yields:
[tex]f(3)=-2(3)+1[/tex]
Multiply:
[tex]f(3)=-6+1[/tex]
Add:
[tex]f(3)=-5[/tex]
So:
[tex]f(3)=-5[/tex]
Can you please help me?
Answer:
f(2) = 0.5(2) +3.4f(3.5) = 0.5(3.5) +3.4f(15) = 0.5(15) +3.4f(21.3) = 0.5(21.3) +3.4Step-by-step explanation:
Put the given weight where x is in the function definition. You're only asked for the expression, not its value.
f(2) = 0.5(2) +3.4f(3.5) = 0.5(3.5) +3.4f(15) = 0.5(15) +3.4f(21.3) = 0.5(21.3) +3.4Order -3, 5, 16, and -10 from least to greatest.
Answer:
-10, -3, 5, 16
Step-by-step explanation:
even though the negative number (10) might seem big, but its not
Answer:
-10,-3,5,16
Step-by-step explanation:
-10 is 10 times smaller than 1
-3 is 3 times smaller than 1
5 is 5 times bigger than 1
16 is 16 times bigger than 1