Answer:
100 more silver.
Step-by-step explanation:
There is an unknown number of people at the beginning of lunch. Then...
Each student had 3 friends come sit with them, tripling the amount.
Then the entire group divided into 4 groups, and all but one group left and went outside, so only 1 fourthof the total students were left in the lunchroom
7 more people came into the lunchroom
The total number of people in the lunchroom at the end of lunch was 16
Answer:
5.25
Step-by-step explanation:
20x=-58-2y
17x=-49-2y
Answer:
20x = -58 - 2y( Ans~ x= -29/11)
17x = -49 - 2y (Ans~ x = -49/19)
Step-by-step explanation:
(1) 20x = -58 2x
20x + 2x = -58
22x = -58
x = -29/11
(2) 17x = -49 - 2x
17x + 2x = -49
19x = -49
x = -49/19
U WELCOME!!
Answer:
y=1
x=-3
Step-by-step explanation:
20x=-58-2y
20x/20=(-58-2y)/20
x=(-58-2y)/20
17x=-49-2y
17x/17=(-49-2y)/17
x=(-49-2y)/17
(-58-2y)/20=(-49-2y)/17
17(-58-2y)=20(-49-2y)
-986-34y=-980-40y
add 40y to both sides
6y-986=-980
add 986 to both sides
6y=6
divide both sides by 6
y=1
substitute
20x=-58-2(1)
20x=-60
x=-3
Proof: (substituting x & y values in original equations)
20(-3)=-58-2(1)
-60=-60
17(-3)=-49-2(1)
-51=-51
Mrs. Deery has 6 large pieces of construction paper for an art project. She has 24 students in her class. What fraction of the paper will each student receive if it is divided into equal parts?
Answer:
Step-by-step explanation:
If 2/3n = -6, then 1/3n =
police chase a car. police are originally 5 miles behind. if the police car's speed is 90 mph and the car they chase is moving with a speed of 80 mph. how long will it take them to catch up?
Step-by-step explanation:
Let x be the number of hours for
the police to catch up to the car.
We have 90x = 80x + 5.
=> 10x = 5
=> x = 0.5.
Hence it will take them 30 minutes.
A quiz has 10 multiple choice questions each with 4 answers that are equally likely to be the correct one. Suppose that the quiz takers need to score 7 corrects out of 10 to pass. Answer the following questions when the quiz taker selects the answers randomly. a) Probability of marking exactly 3 incorrect answers. b) Probability of passing
Answer:
a) 0.0031 = 0.31% probability of marking exactly 3 incorrect answers.
b) 0.0035 = 0.35% probability of passing.
Step-by-step explanation:
For each question, there are only two possible outcomes. Either the student chooses the correct answer, or he does not. Questions are independent of each other. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
10 multiple choice questions
This means that [tex]n = 10[/tex]
4 answers that are equally likely to be the correct one. The quiz taker selects the answers randomly.
This means that [tex]p = \frac{1}{4} = 0.25[/tex]
a) Probability of marking exactly 3 incorrect answers.
3 incorrectly = 7 correctly, so this is P(X = 7).
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 7) = C_{10,7}.(0.25)^{7}.(0.75)^{3} = 0.0031[/tex]
0.0031 = 0.31% probability of marking exactly 3 incorrect answers.
b) Probability of passing
At least 7 correct, so
[tex]P(X \geq 7) = P(X = 7) + P(X = 8) + P(X = 9) + P(X = 10)[/tex]
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 7) = C_{10,7}.(0.25)^{7}.(0.75)^{3} = 0.0031[/tex]
[tex]P(X = 8) = C_{10,8}.(0.25)^{8}.(0.75)^{2} = 0.0004[/tex]
[tex]P(X = 9) = C_{10,9}.(0.25)^{9}.(0.75)^{1} \approx 0[/tex]
[tex]P(X = 10) = C_{10,10}.(0.25)^{10}.(0.75)^{0} \approx 0[/tex]
[tex]P(X \geq 7) = P(X = 7) + P(X = 8) + P(X = 9) + P(X = 10) = 0.0031 + 0.0004 + 0 + 0 = 0.0035[/tex]
0.0035 = 0.35% probability of passing.
At the organic produce store you can buy 3 bags of sweet potatoes for $20.07.
How much would it cost if you were to buy only 2 bags.
Answer:
$13.38
Step-by-step explanation:
Use proportions to solve this problem:
$20.07 / 3 bags = X / 2 bags
multiply both sides by "2 bags" to isolate the unknown X
$20.07 * 2 / 3 = X
Therefore, X = $13.38
brainliest??????????????????????????????
Step-by-step explanation:
Given
f(x) = 3x² + 9
g(x) = 5x
(fog)x = f ( 5x)
= 3 ( 5x) ² + 9
= 3 * 25x² + 9
= 75x² + 9
Hope it will help :)
The first term of a sequence is 3 and the common ratio is 3. The sequence is:
a. 3, 6, 9, 12,...
b 3, 9, 27, 81,...
c 3, 9, 27, 36,...
d None of the choices are correct.
Answer:
B
Step-by-step explanation:
PLEASE ANSWER ASASP FOR BRAINLEST!!!!!!!!!!!!!!
Answer:
48 units squared
Step-by-step explanation:
Will give you brainliest PLS HELP ASAPPP
Answer: UT=18
Step-by-step explanation:
Answer:18
Step-by-step explanation:
It’s divided by 3.5 so divide 63/3.5
HELP ME QUICK! ASAP! A stock clerk is arranging a case of 24 bottles of shampoo on a shelf. Each bottle contains 375 milliliters of shampoo. How many liters of shampoo do all bottles contain? Show your work.
PLEASE SHOW UR WORK LIKE HOW U GOT IT
For every 6 trucks there are 10 cars parked in the commuter lot. If there are 25
cars parked in the lot, how many trucks are there?
Answer:
15
Step-by-step explanation:
The ratio of trucks to cars is 6x/10. And in the problem it says that there are 25 cars. So, 10x = 25, x = 5/2. Then, 6x = 15
Ealuate the following example
52 + 4(6 + 4 + 2)
The value of the expresson
Answer:
I think the answer is 100
Answer:
[tex]100[/tex]
Step-by-step explanation:
1. Simplify 6 + 4 to 10.
[tex]52 + 4 \times (10 + 2)[/tex]
2. Simplify 10 + 2 to 12.
[tex]52 + 4 \times 12[/tex]
3. Simplify 4 × 12 to 48.
[tex]48 + 52[/tex]
5. Simplify.
[tex]100[/tex]
therefor, the answer is 100.
What is the measure of A
Answer: it is about 80%
Step-by-step explanation:
Answer:
i think about 140 degrees
Step-by-step explanation:
A spinner numbered 1 to 8 is spun and a six-sided die is rolled. What is the probability of getting a multiple of 4 on the spinner and a multiple of 4 on the die?
Answer:
1/24
Step-by-step explanation:
P(4,8 and 4) = 2/8 x 1/6 = 1/24
Which set of angles will be complimentary
∠1 + ∠3 + 90° = 180°
∠1 + ∠3 = 90°
∠3 = ∠4 (vertically opposite angles)
∠1 + ∠4 = 90°
Therefore, the answer is ∠1 + ∠4
Determine the maximum number of zeros of the polynomial function -9x^2 + 2x + 2.a.3c.1b.2d.4 Please select the best answer from the choices providedABCD
Answer:
b
Step-by-step explanation:
f(x) = -9x² + 2x + 2
Discriminant = 2² - 4(-9)(2) = 76
The discriminant is positive, so there are two distinct roots.
3/4(8x -4) is equivalent to 3x - 2 + 3x - 1
true or flase
Answer:
true
Step-by-step explanation:
What is the slope of the line that passes through the points (-6, -7) and
(-24. - 7)? Write your answer in simplest form.
Answer:
-18/0 or 0
Step-by-step explanation:
If the circumference of the circle above is 25.12 units, what is the area? (Use 3.14 for T.)
Answer:
50.24 units2
Step-by-step explanation:
94 – 3( -7 + ( 5 – 8 ) ^2 )
Answer:
142 is the correct answer (PEMDAS)
The value of a printer is decreasing by a constant percent rate e
value of the printer at the end of each year. which table represents the value of the printer at the end of each year
Answer:
b.
Step-by-step explanation:
Find the equation of the function in the graph
A) y=x
B) y=|x|
C) y=x3
D) y=x2
Answer:
D
Step-by-step explanation:
it is a graph of [tex]x^{2}[/tex]
Answer:
D.) y=x2
Step-by-step explanation:
Look in pic above, on EDGE NUITY I always used to graph to find the answer
Karen gaines invested $15,000 in a money market account with an interest rate of 2.25% compounded semiannually. Five years later, Karen withdrew the full amount to put towards the down payment on a new house. How much did Karen withdraw from the account
Answer:
years later , karen withdrew the full amount to put toward the down payment on a new house. How much did she withdraw? ... gaines invested $15,000 in a money market account with an interest rate of 2.75% compounded semiannually. ... Median response time is 34 minutes and may be longer for new subjects.
Yesterday, Mary had n baseball cards. Today, she gave 18 away. Using n , write an expression for the number of cards Mary has left.
Answer:
n-18
Step-by-step explanation:
If the point (−1,3) is translated according to the rule (x,y)→(x+4,y−2), and then reflected across the x-axis, what are the coordinates of the final image?
A. (3,−1)
B. (3,1)
C. (−1,3)
D. (-3. -1)
btw the answer is A, because i took the assignment on gizmos this is just for people who need the answer :>
Answer:
hi
Step-by-step explanation:
rfshs hmm jtutq JK jehewyywgu
Answer:
<3
Explanation:
I guess me need it in future
(9t + 1) + 7(1 + 9t)
Complete the missing expressions!!
Answer:
Step-by-step explanation:
Distribute:
=9t+1+(7)(1)+(7)(9t)
=9t+1+7+63t
Combine Like Terms:
=9t+1+7+63t
=(9t+63t)+(1+7)
=72t+8
Alr, time to fight pico.
3, 2, 1, GO
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ez, thats light workkk
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okok this is getting difficult
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dang i messed up but still, LOOK AT THE BAR AYYYY
lets goooo.
Answer:
niceeeeeeeeeeeeeeeee!
Step-by-step explanation:
Which of these represents the equation of a line that passes through the points (-5, -4) and (3, 8)?
A
3
y = x +
7
2
B.
y = {
C
2
3
С
y = ſa +6
y= 3x - 22
D
2