Answer:
The number of muffins sold by the students is:
25 muffins.Step-by-step explanation:
First, we name the variables:
C= Number of chocolate chip cookies sold.M= Number of muffins sold.Now we establish the equations with the information given in the exercise:
C + M = 1000.5C + 1.25M = 68.75We can use in this case the reduction method, to this, we multiply the first equation by (-0.5) obtaining the equation 3:
[C + M = 100] * (-0.5) = -0.5C - 0.5M = -503. -0.5C - 0.5M = -50
We operate the equations 2 and 3 to eliminate the variable C:
(0.5C + 1.25M = 68.75) + (-0.5C - 0.5M = -50) = (0.75M = 18.75)And we solve for the variable M:
0.75M = 18.75M = 18.75/0.75M = 25We could stop here because we know the number of muffins now, but with the value for M, we can solve the value of C with the first equation to check the answer is correct:
C + M = 100C + 25 = 100C = 100 - 25C = 75In the end, we replace the values in the second equation and verify if the answer is correct:
0.5C + 1.25M = 68.750.5 * (75) + 1.25 * (25) = 68.7537.5 + 31.25 = 68.7568.75 = 68.75Which expression has a value that is equivalent to 5n + 13 when n=−5?
Answer:
-25+13 answer is -12
Step-by-step explanation:
3/5 × 35 in simplest form
Answer:
i used desmos calculator
Step-by-step explanation:
3/5 = 0.6
0.6 x 35 = 21
21 is already a simplest mode
u can also used 0.21
3. A person standing 3 feet away from the base of a lamp post casts a shadow 4 feet long. If the person is 6 feet tall and walks away from the lamp post at a speed of 400 feet per minute, at what rate will his shadow lengthen
Answer:
533.33 ft/min
Step-by-step explanation:
We are given that
x=3 feet
y=4 feet
Height of person,h=6 feet
[tex]\frac{dx}{dt}=400 ft/min[/tex]
Triangle ABC and A'B'C are similar because all right triangles are similar
By using similarity property
[tex]\frac{h'}{6}=\frac{7}{4}[/tex]
[tex]h'=10.5 feet[/tex]
[tex]x+y=3+4=7 feet[/tex]
[tex]\frac{h'}{6}=\frac{x+y}{y}[/tex]
[tex]\frac{10.5}{6}=\frac{x+y}{y}[/tex]
[tex]10.5y=6x+6y[/tex]
[tex]10.5y-6y=6x[/tex]
[tex]4.5y=6x[/tex]
Differentiate w.r.t t
[tex]4.5\frac{dy}{dt}=6\frac{dx}{dt}[/tex]
[tex]\frac{dy}{dt}=\frac{6\times 400}{4.5}ft/min[/tex]
[tex]\frac{dy}{dt}=533.33ft/min[/tex]
Hence, If the person is 6 feet tall and walks away from the lamp post at a speed of 400 feet per minute then his shadow moving at the rate 533.33 ft/min
Graph 1
Graph 2
They are the same
Which graph is increasing at a faster rate?
Which graph has a higher initial value?
Which graph has a higher value at x = 2
Answer:
I think it's Graph 2 in all
Hope this help
Solve for 9x-3-8x=7-x
Answer:
5
Step-by-step explanation:
9x - 3 - 8x = 7 - x
9x - 3 - 8x + x = 7
2x - 3 = 7
2x = 10
x = 5
Answer:
hope u understand
Step-by-step explanation:
[tex]\: 1. \: x - 3 = 7 - x \\ \: 2. \: x + x - 3 = 7 \\ 3. \: x + x = 7 + 3 \\ 4. \: 2x = 7 + 3 = 10 \\ 5. \: 10 \div 2 = 5 \\ 6. \: x = 5[/tex]
let me explain you now
1. collect like terms
2. move the variable to the left hand side and change its sign
3. move the constant to the right hand side and change its sign
4. collect like terms and add the numbers
5. divide the answer with 2
6. the solution
Anna made 33 blueberry cookies. If she shares this equally among her four
friends, how many will each receive? Will there be any cookies leftover?
Answer:
each person will get 8 cookies and there will be one remaining
Step-by-step explanation:
33 ÷ 4 = 8.25
4 × 8 = 32
33 - 32 = 1
PLEASE HELP!!!!
The two triangles shown are congruent: AABC = AXYZ. Based on this information,
which of the following is a true statement?
Answer:
I will say the answer is A
According to the Fundamental Theorem of Algebra, how many roots exist for the polynomial function?
Answer:
5
Step-by-step explanation:
helppppp
Tony is going to watch a movie in his collection. He has 3 action movies, 11 comedies, and 9 dramas.
He will randomly select one movie. What is the probability that the movie he selects is not a comedy?
Write your answer as a fraction in simplest form.
Answer:
nvm the other guys right
I'm slow
Answer:
12:23
Step-by-step explanation:
3+11+9=23
9+3=12
9+3 is the number of movies which are not comedies
helpppp pls (correct answer
Answer:
5^12
Step-by-step explanation:
5 to the 12th power because 4x3 =12
Take a look at the score for "Evening Song."
a score for Evening Song in standard music notation, the staff begins with a treble clef, a sharp symbol on the F line and in the C space, and a four over a four; the melody of the song is half note D, quarter note G, quarter note F sharp, half note E, quarter rest, eighth note F sharp, eighth note G, eighth note A, eighth note G, eighth note F sharp, eighth note E, quarter note G, quarter note C sharp, half note D; the solfege for the song is Do Fa Mi Re Mi Fa Sol fa Mi Re Fa Ti Do
Use the steps to sight reading to answer the following questions about the score.
What is the key signature?
What is the time signature?
Which rhythmic note values are used in the score?
Which solfege pitches are used in the score?
Answer: sorry
Step-by-step explanation:
Compare 4 and -2. Which of the following is true?
A. 14<1-2and 4 <-2
B. 141 = 1-2 and 4 >-2
C. 141 <1-21 and 4> -2
D. 41 > 1-2 and 4>-2
Hello I just want to ask what is the definition of exterior and anterior?
Answer:
exterior is the outside and anterior is the front
Step-by-step explanation:
3(x+6)= -3.68
Find x, I think I know how but I’m not really sure
Answer:
x = - 7.23
Step-by-step explanation:
3(x+6)= -3.68 Start with the breackets.
3x + 18 = - 3.69 Subtract 18 from both sides
3x = - 3.69 - 18
3x = -21.69 Divide by 3
x = - 21.69/3
x = -7.23
Please help helppppp
Answer:
C
Step-by-step explanation:
Area= 1/2 (b1+b2)h
1/2 (38+14)x16
52x16=416
In fraction how too solve 2/8=4
Answer:
8/8=16
Step-by-step explanation:
4/2=2
2x8=16
8/8(whole)=16
-2 1/3 - (-5)=
Please help me
To prepare for the winter season the manager of an outdoor ice skating rink ordered 4,920 pounds of sand to keep around the skating rink from being yo slippery One bag of sand is 40 which equation can be used to find the number of bag of sand ,b, the manager order
Answer:
hope this helps UwU
Step-by-step explanation:
The required equation represents the number of bags of sand is b = 4920 ÷ 40.
What is the equation?The equation is the relationship between variables and represented as y = ax + b is an example of a polynomial equation.
here,
To prepare for the winter season the manager of an outdoor ice skating rink ordered 4,920 pounds of sand to keep around the skating rink from being yo slippery One bag of sand is 40 points.
Let the number of bags be b,
40 × = 4920
b = 4920 ÷ 40
Thus, the required equation that represents the number of bags of sand is b = 4920 ÷ 40.
Learn more about equations here:
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36 Solve for x. 112 0 0
Answer:
x=12(the side in parallel are equal.
Are anesthetics safe? The National Halothane Study was a major investigation of the safety of anesthetics used in surgery. Records of over 850,000 operations performed in 34 major hospitals showed the following death rates for four common anesthetics:
Anesthetic A B C D
Death 1.7% 1.7% 3.4% 1.9%
There seems to be a dear association between the anesthetic used and the death rate of patients. Anesthetic C appears to be dangerous.
A) Select the best explanation for why we call the National Halothane Study an observational study rather than an experiment, even though it compared the results of using different anesthetics in actual surgery.
B) When the study looked at other variables that are confounded with a doctor's choice of anesthetic, it found that Anesthetic C was not causing extra deaths. Suggest several variables that are mixed up with what anesthetic a patient receives.
Answer:
a) An experiment is conducted based on random observations not on certain selected observations.
b) age, blood type etc
Step-by-step explanation:
a) We call the National Halothane Study an observational study rather than an experiment, because the anesthetics were not randomly chosen. They were prescribed by the doctors.
An experiment is conducted based on random observations not on certain selected observations.
b) There are factors such as age, sex, intensity , limit, tolerance and reactivity of the patient with the particular anesthetics chosen. If these are not carefully studied the results may not be as rewarding as desired.
If an anesthetics is chosen wihtou knowing the age or blood type for tolerance it may result in dangerous situations.
Some patients are highly tolerant with certain medications but others may die.
A 400g loaf of white bread contains 228 g of flour. An 800 g loaf of brown
bread contains 472 g of flour. Which loaf contains a higher percentage of flour?
Answer:
The loaf of brown bread contains a higher percentage of flour.
Step-by-step explanation:
To find the percentage of flour, we divide the amount of flour by the weight of the bread, and then multiply by 100. So
400g loaf of white bread:
228g of flour
[tex]P = \frac{228*100}{400} = 57\%[/tex]
57% of flour
800g loaf of brown bread:
472g of flour
[tex]P = \frac{472*100}{800} = 59\%[/tex]
59% of flour, so, a higher percentage
9) Alyssa takes 10 hours to repair the roof. It takes Mike 11 hours to
complete this job. How long would it take if they worked together?
Answer:
I'm sorry for "awnsering" this I needed some points
Answer:
11 hours
Step-by-step explanation:
so here the thing alyssa takes 10 hours
but with one more person to help it take have the time to do so that would be 5.
Mike take 11hour to do a job so we do the same thing but with mike so it will be half the time 6
and if you add them together you get 11 soo it would take 11 hours to do all of the work together
(sorry if wrong) but hope it helps
To rent a certain meeting room, a college charges a reservation fee of $39 and an additional fee of $5.30 per hour. The math club wants to spend at most
$81.40 on renting the meeting room.
Answer:
the most time they can spend is 8 hours
The graph below has the same shape as the graph of G(X) = x2, but it is
shifted up four units and to the right three units. Complete its equation. Enter
exponents using the caret (^); for example, enter x2 as x^2. Do not include
"F(x) =" in your answer.
5
Answer:
The new function f(x) = (x-3)² +4
Step-by-step explanation:
Step(i):-
Given that the graph f(x) = x²
The given graph shifted up four units then the new function
f(x) = x²+4
Step(ii):-
And again the graph shifted '3' units right then the graph is transformed to
f(x) = (x-3)² +4
Percent * $3.32 = $0.32 + $0.184
The missing percentage of the given algebraic expression when calculated is; 15.18%
How to work with Percentages?We want to find;
Percent * $3.32 = $0.32 + $0.184
First of all, let us add the terms on the right side of the equation to get;
Percent * $3.32 = $0.504
Next operation is to divide both sides by 3.32 using division property of equality to get;
Percent = 0.1518 = 15.18%
Read more about Percentages at; https://brainly.com/question/843074
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Watch ordered pair is not a point on the graph of y= -5x + 2?
A(-1,6)
B(0,2)
C(-2,12)
D(2,-8)
the distance formula is used for 2 points on a coordinate plane?
Answer:
the distance formula is used to find the distance between two points in the plane.
Step-by-step explanation:
(5n2 – 4nm - 9m²) + (7n2 + 4nm +8m²) =
Answer:
[tex]\left(5n^2-4nm-9m^2\right)+\left(7n^2+4nm+8m^2\right)=12n^2-m^2[/tex]
Step-by-step explanation:
Given the expression
[tex]\left(5n^2\:-\:4nm\:-\:9m^2\right)\:+\:\left(7n^2\:+\:4nm\:+8m^2\right)[/tex]
Remove parentheses: (a) = a
[tex]=5n^2-4nm-9m^2+7n^2+4nm+8m^2[/tex]
Group like terms
[tex]=5n^2+7n^2-4nm+4nm-9m^2+8m^2[/tex]
Add similar elements: [tex]5n^2+7n^2=12n^2[/tex]
[tex]=12n^2-4nm+4nm-9m^2+8m^2[/tex]
Add similar elements: [tex]-4nm+4nm=0[/tex]
[tex]=12n^2-9m^2+8m^2[/tex]
Add similar elements: [tex]-9m^2+8m^2=-m^2[/tex]
[tex]=12n^2-m^2[/tex]
Therefore, we conclude that:
[tex]\left(5n^2-4nm-9m^2\right)+\left(7n^2+4nm+8m^2\right)=12n^2-m^2[/tex]
Graph g(x) = 4 cos x
Use 3.14 for pi
Answer:
this is a graph of the question hope this helps
Out of 75 students if 8% were absent find the number of present student
Answer:
69 students
Step-by-step explanation:
Step one:
number of students = 75
percentage absebt= 8%
Find the value of 8% absent
=8/100*75
=0.08*75
=6 students
Number present= Total students- number absent
Number present= 75- 6
Number present= 69
Hence there are 69 students present