Answer:
X = 21 / 4 (21 over 4)
Step-by-step explanation:
First, we combine like terms:
5x−11=x+10
Step 2: Subtract x from both sides.
5x−11−x=x+10−x
4x−11=10
Step 3: Add 11 to both sides.
4x−11+11=10+11
4x=21
Step 4: Divide both sides by 4.
4x/4 = 21/4
x= 21 / 4
Please give me brainliest of this helped you! Thanks!
Two black chips and three red chips are put into a bag. Two points are awarded for each black chip drawn, and one point is lost for each red chip drawn. What is the expected value for each round if there are two draws per round and the chips are replaced after each draw? –0. 08 –0. 04 0. 2 0. 4.
The expected value for each round, if there are two draws per round and the chips, are replaced after each draw is 0.4.
Given to us
Number of black chips = 2
Number of red chips = 3
Points are given for a black chip = +2
Points are given for a red chip = -1
What are the probabilities of the different cases?We know that for each round there will be 2 draws, therefore, there will be four cases,
Case1:
Probability, when both the chips drawn are black,
[tex]\dfrac{2}{5} \times \dfrac{2}{5} = \dfrac{4}{25}[/tex]
Case2:
Probability, when the first chip is black and the next chip is red,
[tex]\dfrac{2}{5}\times \dfrac{3}{5}=\dfrac{6}{25}[/tex]
Case 3:
Probability, when the first chip is red and the next chip is black,
[tex]\dfrac{3}{5}\times \dfrac{2}{5}=\dfrac{6}{25}[/tex]
Case 4,
Probability, when both the chips drawn are red,
[tex]\dfrac{3}{5}\times \dfrac{3}{5}=\dfrac{9}{25}[/tex]
What is the expected value for each round?The expected value of each round can be found,
[tex]E(x) = (2+2)\dfrac{4}{25} + (2-1)\dfrac{6}{25} +(-1+2)\dfrac{6}{25} +(-1-1)\dfrac{9}{25}[/tex]
E(x) = 0.4
Hence, the expected value for each round, if there are two draws per round and the chips, are replaced after each draw is 0.4.
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I WILL GIVE BRAINLIEST
Answer:
See below. No image this time.
Step-by-step explanation:
1.
P(2, 8) → P'(-5, 1), which it went 7 units to the left, and 7 units down. Here is the equation: (x - 7, y - 7).2.
R(-4, -9) → R'(-4, -2), which went 7 units up. Here is the equation: (x, y + 7).3.
M(10, -3) → M'(3, 4), which went 7 units left, 7 units up. Here's the equation: (x - 7, y + 7).4.
K(7, 11) → K'(0, 11), which went 7 units left. Here is the equation: (x - 7, y).solve the systems of equations through elimination, show work
3+2x-y=0
-3-7y=10x
Answer: x=-1 y=1
Step-by-step explanation:
solve y in 3+2x-y=0
y=3+2x
sub y=3+2x into -3 -7y=10x
-14x- 24= 10x
solve x in -14x-24=10x
x= -1
sub x= -1 into y =3+2x
y=1
so therefore x= -1 and y=1
HELP
subtract -4/5 - 2/3
A -22/15
B -3/4
C -2/5
D 8/15
Answer:
A
Step-by-step explanation:
-4/5×3/3=-12/15
2/3×5/5=10/15
-12/15-10/15= -22/15
complete the pattern 1,4,16,64
Answer:
Multiplying by 4 each time. 64 x 4 = 256
Step-by-step explanation:
Hope this helps. :D
pattern is times 4
256, 1024, 4096
13. Identify the terms, like terms, coefficients, and constants in the
expression. 2x + 3y + x + 7
Answer:
On the attachment.
Step-by-step explanation:
On the attached image.
For the given sequence: -10, -5, 0, 5, 10...
Find the 38th term.
Answer:
175
Step-by-step explanation:
1)Firstly you have to find the nth term of the sequence -10,-5,0,5. There a gap or +5 in each term meaning it's 5n. If we substitute n with the number it is in the sequence we can find out the next part of the nth term. For example the first number of the sequence is -10 meaning 5n+x = -10. We repleace n with the 1 since it is the first number in the sequence and we get 5+x = -10. In order to find x by itself we -5 from both sides and we get x =-15. Now we know the nth term of -10,-5,0,5 is 5n-15
2) Now that the hard part is out of the way the rest is simple. N simply reprents the term the number is in. If we want to find out the 38th term we replace n with 38. We get 5x38-15 = 175
Thanks for reading, please let me know if I've left anything out. Apologies for writing a whole essay :)
Which expression can be used to convert 100 USD to Japanese yen?
Two competing gyms each offer childcare while parents work out. Gym A charges $9.00 per hour of childcare. Gym B charges $0.75 per 5 minutes of childcare. Which comparison of the childcare costs is accurate?
Gym B charges $1.05 less per hour than Gym A.
Gym B charges $1.50 less per hour than Gym A.
Gym B charges $5.25 less per hour than Gym A.
Gym B and Gym A charge the same hourly rate for childcare.
Answer: B
Step-by-step explanation:
Draw the image of the following triangle after a dilation centered at the origin with a scale factor of 2.
1
1
Х
5
V
Check
Anjana has 4 pencil in her box. Their average length is 10cm. Which of the following is NOT POSSIBLE? A) The shortest pencil in the box is 2cm long B) The longest pencil in the box is 8cm long C) Two of the pencil's are 10cm each D) all the pencils are of the same length Guys can you quickly give an answer to the Question WITH AN EXPLANATION
The situation which is not possible about the pencils in her box is; Choice B: The longest pencil in the box is 8cm long.
Mean and Measure of central tendencyBy convention, the mean is a statistical measure of central tendency.
On this note, if the mean of a set of data values is 10, this means the data values have data points greater, equal and less than the mean value.
On this note, it is impossible to have the longest pencil in the box to have a length, 8cm.Read more on Mean;
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I WILL GIVE BRIANLIEST FOR BEST ANSWER!!!
Which polygon appears to be regular?
Figure A
Figure B
Figure C
Figure D
Answer:
Figure A
Step-by-step explanation:
A regular polygon is a polygon that has equal sides and angles.
By looking at the choices you can see the Rhombus or square has all equal sides and all angles are the same.
Hope this helps!
Make sure to put this in notes for later <3
Xx
What is the classification for this angle?
acute
obtuse
right
I don't know.
Answer:
The angle being shown is an acute angle
Step-by-step explanation:
Answer
obtuse
Step-by-step explanation:
i did the test.
Alinea Slope Of 10/3 and y "-intercept" of 10. What is its equation in slope "-intercept" form?
Answer:
y=10/3x + 10
Step-by-step explanation:
y = mx + b
m is the slope, b is the intercept
In Example 3, why did she set the values of the angles equal to each other instead of = to 90 or 180 degrees.
Answer:
they're the same angle
Step-by-step explanation:
technically, if you were to line up the angles on top of each other, you'll see that they are EXACTLY the same. it's just flipped in your case
Solve by Factoring (4m +2 )(3m - 9)= 0
i think i know but looking at peoples answer now i am reconsidering my choices but anyway good luck i think u should use the other guy solution but anyway have a good day :>
Explanation:
The equation is already factored for us (well nearly so).
Set each piece equal to zero. Refer to the zero product property.
4m+2 = 0 solves to m = -1/2. Subtract 2 from both sides, then divide by 4 to get m = -2/4 = -1/2.3m-9 = 0 solves to m = 3. You add 9 to both sides, then divide by 3 to isolate m.The two roots are -1/2 and 3. If you were to substitute either value into the equation, then you should get 0 on both sides after simplifying.
Find the area of the parallelogram
Answer:
look below
Step-by-step explanation:
5d-6*(3cd) = 15cd^2-28cd
Find the value of x required for
the polygon below to be a
parallelogram.
3x+1
2y+22
79-
X+27
x= [?]
Answer:
13
Step-by-step explanation:
See attachment
Pls help me with this!!!
Step-by-step explanation:
I'm not sure what you need help with, since what you have written down is correct. However, if you are looking for an explanation, here it is:
x + 5 < -2
To solve for x, we have to get x on one side by itself. Whatever you do to one side, you have to do to the other. Let's get rid of 5 to get x by itself.
x + 5 < -2 (Subtract 5 from both sides)
x < -7
Perfect! Basically what this is saying, is that all the values x can equal have to be less than -7. The sign < means less than.
For the signs < (less than) and > (greater than), we use an open circle.
For the signs ≤ (less than or equal to) and ≥ (greater than or equal to), we use a closed circle.
This is why we use an open circle for this example since x is LESS THAN -7.
The arrow is pointing to the left because these numbers are less than -7.
Find t10 and s10 for the arthmitic series in which t4=11. 6 and t8=12. 4.
Answer:
t%281%29+=+t%284%29-3d+=+11.6-3%280.2%29+=+11
Step-by-step explanation:
t%2810%29+=+t%288%29%2B2d+=+12.4%2B2%280.2%29+=+12.8
The price of Stock A at 9 AM WAS $12.24. Since then, the price has been increasing at
the rate of $0.11 each hour. At noon the price of Stock B was $12.74. It begins to decrease at the
rate of $0.15 each hour. If the two rates continue, in how many hours will the prices of the two
stocks be the same?
Answer:
Step-by-step explanation:
t is the number of hours
12.24+0.11t = 12.74-0.15t
0.11t + 0.15t = 12.74 - 12.24
0.26t = 0.5
t= 0.5/0.26
t= 1.92 hours
approx to 2 hours
Maree pays $73.87 per month for Sky television
and $127.50 per month to rent a plasma
television. Estimate how much she spends per
year on TV watching.
Answer:
2416
Step-by-step explanation:
12 × (73.87 + 127.50)
=2416.44
Hello I’m in algebra and I need help on questions I’ll give brainlist ASAP ANSWER BOTH PLS !
Answer:
1. proportional
2. true
Answer:
congruent and true
Step-by-step explanation:
good luck!!
slope intercept form and standard form
Answer:
First Equation:
Slope Intercept Form: y=-1/2x+6
Standard Form: -1/2x+6
Second Equation:
Slope Intercept Form: y=1x-3 OR y=x-3
Standard Form: 1x-3 OR x-3
Step-by-step explanation:
We can just solve the equation by using the inequalities method.
First Equation:
y - 4 = - 1/2(x - 4)
y - 4= - 1/2x + 2
y = - 1/2x + 6
Second Equation:
y + 7 = 1/3(3x + 12)
y + 7 = 1x + 4
y = 1x - 3
Hope this helped!
Un repartidor de comida va a entregar dos pizzas en el mismo viaje. La primera pizza se encuentra a 40 km al norte de la tienda, mientras que la segunda se localiza a 100 km al sur de la tienda. El repartidor bate su récord personal al llegar de la primera a la segunda casa en 10 s. ¿Qué velocidad lleva el repartidor?
Veremos que que la velocidad es de 14 km/s hacia el sur.
¿Como calcular la velocidad?
La velocidad se calcula como el cociente entre la distancia recorrida y el tiempo que se tarda en recorrer dicha distancia.
En este caso, la distancia de las casas es de 140km (pues una casa esta 40km al norte y la otra 100km al sur de la tienda).
Y el tiempo en el que el repartidor recorre esta distancia es 10 s.
Así la velocidad será:
V = 140km/10s = 14km/s
Lo que es muy rapido.
Tambien cuando hablamos de velocidad hay que aclarar la dirección, la cual es sur en este caso.
Concluimos que la velocidad es de 14 km/s hacia el sur.
Sí quieres aprender más sobre velocidad, puedes leer:
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order of operations algebra
Answer:
you can literally look these up and you get step by step answers
Step-by-step explanation:
What is the solution to this systems of equations?
Answer:
x=-3 y=1
Step-by-step explanation:
First, find the point where the 2 lines intersect. Which is (-3,1).
x= -3
y= 1
Answer:
x= -3
y= 1
Step-by-step explanation:
The point intersects at (-3,1)
The coordinates of the endpoints of MP¯¯¯¯¯¯ are M (−3,−2) and P (2,3).
Answer:A
Step-by-step explanation:
An amount of $48,000 is borrowed for 15 years at 7.75% interest, compounded annually. If the loan is paid in full at the end of that period, how much must be paid back? Use the calculator provided and round your answer to the nearest dollar.
[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$48000\\ r=rate\to 7.75\%\to \frac{7.75}{100}\dotfill &0.0775\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &15 \end{cases} \\\\\\ A=48000\left(1+\frac{0.0775}{1}\right)^{1\cdot 15}\implies A\approx 147062[/tex]
Joy has a Barbie Doll Dream House. The scale of the doll house is 4in:3ft. Using that scale factor complete the life size measurement of the items in the table.
The actual length of the car is 15 feet.
The actual length of the dream house is 24 feet.
The actual length of the barbie doll is 6 feet.
What is a scale drawing?A scale drawing is a smaller image in terms of dimensions of an original image / building / object. The scale drawing is usually reduced at a constant dimension.
What are the actual lengths?The actual length of the car = (20 x 3) / 4 = 15 feet
The actual length of the dream house = (3 x 32) / 4 = 24 feet
The actual length of the barbie doll = (3 x 8) / 4= 6 feet
Please find attached the table. To learn more bout scale factor, please check: https://brainly.com/question/8765466
A lender estimates that the closing costs on a $220,400 home loan will be $6,612. The actual closing costs were 3.25% of the loan amount. Determine if the closing costs were higher or
lower than the estimate and by what percent?
higher by 0.25%
higher by 0.5%
lower by 0.25%
lower by 0.5%
The closing costs were lower than the estimate by 0.25%.
CalculusGiven that a lender estimates that the closing costs on a $220,400 home loan will be $6,612, and the actual closing costs were 3.25% of the loan amount, to determine if the closing costs were higher or lower than the estimate and by what percent should perform the following calculation should be done:
220400 = 1006612=X6612 x 100 / 220400 = X661200 / 220400 = X3 = XTherefore, the closing costs were lower than the estimate by 0.25%.
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