how many solutions does the system of equations have explain 2.5(x+4)=4.1x+16-1.6x
Answers
Related Questions
Find the exact value of x
Answers
a=x
c=9
b=7
9^2=x^2+7^2
81=x^2+49
x^2=81-49
x^2=32
x= √32
x= 5.65685424949
How many outcomes are in the sample space when rolling a standard number cube and spinning a spinner with 4 equal sections?
Answers
Answer: 24
Step-by-step explanation: A standard cube has 6 sides. The spinner has 4 sections. For any section of the spinner you land on, you can land on one of 6 sides of the dice.
4*6
The probability of dry weather (D) = 1⁄2, rain (R) = 1⁄3 and snow (S) = 1⁄6
If it is dry the probability that someone will arrive on time is 4
/5.
If it rains the probability that someone will arrive on time is 2
/5.
If it snows the probability that someone will arrive on time is 1
/10.
Calculate the probability that somebody is late.
Answers
=============================================================
Explanation:
Define the following events
D = weather is dryR = weather is rainyS = weather is snowyL = person is lateT = person is on timeWe are given the following probabilities
P(D) = 1/2P(R) = 1/3P(S) = 1/6Then we're further told that "if it is dry, then the probability someone will arrive on time is 4/5". We can condense that into the notation
P(T given D) = 4/5
The "given D" means that we know 100% that event D has occurred. So we're seeing how event T behaves because of D occurring. In other words P(T given D) is the same as saying "What is P(T) when we know D has happened?"
-------------------------
The instructions also mention that "If it rains, the probability someone is on time is 2/5" tells us we have the notation
P(T given R) = 2/5
And also, the probability someone is on time if it is snowy is
P(T given S) = 1/10
due to it saying "If it snows, the probability that someone will arrive on time is 1/10".
-------------------------
To recap so far, your teacher told you these three conditional probabilities
P(T given D) = 4/5P(T given R) = 2/5P(T given S) = 1/10They are conditional due to the "given" as part of the probability. They depend on the given event happening.
Subtract each fraction from 1 and we end up with these complementary probabilities
P(L given D) = 1/5P(L given R) = 3/5P(L given S) = 9/10I'm using the idea that P(A)+P(B) = 1, where A and B are complementary events. One or the other event must happen. Either you are on time, or you are late.
---------------------------
Recall the conditional probability formula is
P(A given B) = P(A and B)/P(B)
which rearranges to
P(A and B) = P(A given B)*P(B)
We'll use this idea to get the following
P(L and D) = P(L given D)*P(D) = (1/5)*(1/2) = 1/10P(L and R) = P(L given R)*P(R) = (3/5)*(1/3) = 1/5P(L and S) = P(L given S)*P(S) = (9/10)*(1/6) = 3/20This means,
P(L) = P(L and D) + P(L and R) + P(L and S) ..... law of total probability
P(L) = 1/10 + 1/5 + 3/20
P(L) = 2/20 + 4/20 + 3/20
P(L) = (2+4+3)/20
P(L) = 9/20 is the probability someone is late
These 12 shapes are put into a bag. If you reach
into the bag 60 times, replacing the shape after
each time, predict how many times you would pull
out a circle.
25 times
20 times
30 times
15 times
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What is 2,117 rounded to the nearest hundred?
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Answer:
2,100
Step-by-step explanation:
can someone help me plz
Answers
Answer:
nose lo que dice.....pero puedo tener esos 5 puntos......perdób
Triangle FGH, with vertices F (4, -8), G (9,-4) and H (2,-3) is drawn inside a rectangle, show below. Please answer correctly !!!! Will be marking Brianliest !!
URGENT !!!!!!!!!!!!!!!!
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Answer:
Area=33/2
Step-by-step explanation:
Over the past few years Donald made 40 trips to the amusement park. He drove 400 km in all. The distance travelled by him on each trip to the park is:
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Answer:
10
Step-by-step explanation:
Answer:
10 km
Step-by-step explanation:
total no of km covered=400
total no of trips=40
distance in each trip= 400/40
=10km
How long is the blue line in inches? Enter your final answer as a simplified fraction.
Answers
Answer:
0/12
Step-by-step explanation:
Answer:
13/15
Step-by-step explanation:
-1 -10 - 3) - 50 - 9a
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-1 -1 0= -11 -3=--14-50=-64
Answer:
-64-9a
Step-by-step explanation:
(✿◡‿◡)╰（‵□′）╯
In hopes of encouraging healthier snacks at school, Janice brought in a tray 1 point
of carrot sticks and apple slices to share. She brought 76 snacks in all. 19 of
the snacks were carrot sticks. What percentage of the snacks were carrot
sticks?
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Answer:
57%
Step-by-step explanation: Well, subtract 76 - 19 = 57. 57 of 100 = 57/100
57/100 = 57%
Need help because i can’t seem to figure it out
Answers
9514 1404 393
Answer:
y -10 = 1/8(x +8)
Step-by-step explanation:
The point-slope form of the equation of a line with slope m through point (h, k) is ...
y -k = m(x -h)
You have m = 1/8, and (h, k) = (-8, 10).
Putting those numbers in the form gives ...
y -10 = 1/8(x -(-8))
You can simplify the double minus sign so you have ...
y -10 = 1/8(x +8)
_____
Additional comment
A lot of math is about matching patterns and making substitutions. This is a good example of that.
What does w equal?pls help me
Answers
Answer:
-9/2
Step-by-step explanation:
Hope this helps
sorry if it’s wrong
The evening low temperature in New York in the month of February was -7°F. The following day, the
temperature rose to a high of 25°F. What was the change in temperature that day?
Answers
Answer:
32°F
Step-by-step explanation:
Given that,
The low temperature in New York in the month of February was -7°F. The following day, the the temperature rose to a high of 25°F.
We need to find the change in temperature that day.
Change = final temperature - initial temperatur
Change = 25°F - (-7°F)
= 25 +7
= 32°F
so, the required change in temperature is 32°F.
Factorizar
1. (a+ b)^3 − 27
2. 2x^2+7x+3
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Answer:
1) (a+b) = 3
2) (2x+1)(x+3)
Step-by-step explanation:
by how much does 32 exceed 8
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Answer:
by 24
Step-by-step explanation:
32-8 = 24
sarah started the school year with 14 drawings in her notebook and draws 5 more each day. whats the linear equation?
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Answer:
y = 5x + 14
Step-by-step explanation:
Let x = number of day and y = number of drawings.
She draws 5 drawings per day, so in x days, she draws 5x drawings.
She started with 14 drawings, so the total number of drawings in any day, x, is
5x + 14.
The equation is
y = 5x + 14
X-y=4
4x+y=1 if you answer correctly I will give you Brainlist
Answers
Answer:
−
=
4
4
+
=
1
Step-by-step explanation:
to the nearest tenth, what is the height of the square pyramid shown below?
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Answer:
D
Step-by-step explanation:
if you can't see it or don't understand something just tell me:) Good luck and I hope it helped.
Tony owes Tina 40p.
Then Tina borrows 50p from Tony.
Later Tony gives Tina 60p.
Who has to pay what to whom to
square things up?
nswer
I need to answer this challenge
Answers
You want to order some T-shirts that cost $14 each. Shipping is $7 per order. If you
buy 11 T-shirts, what will the order cost?
$231
$154
$161
$91
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Jenna did 5 sit-ups on Saturday, 7 sit-ups on Sunday, 10 sit-ups on Monday, 14 sit-ups on Tuesday, and 19 sit-ups on Wednesday. If this pattern continues, how many sit-ups will Jenna do on Thursday?
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36 is what percent of 247
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Explanation:
36 divided by 247 which gives you 0.14574899
Then you have to move the decimal two spots the the right. Which gives you...
14.574899%
Which you can then round to 14.6%
[tex]5^{2}= 55[/tex]
Answers
Answer:
bugahhh
Step-by-step explanation:
bugahhh
Answer:
2 is actually 11
Step-by-step explanation:
5 x 11 = 55
divide 5 from both sides to get,
2 = 11
I think you meant two as a variable maybe?
What One Doesn't Belong?
y=4x
y=x+7
y=-2x+4
y=3x-1
Answers
Answer and Step-by-step explanation:
The equation y = -2x + 4 does NOT belong.
This equation has a negative slope, while the other equations have a positive slope.
#teamtrees #PAW (Plant And Water)
GIVING BRAINLIEST!!!!
If the total length of all the meteors were distributed equally between each meteor, how long would each one be?
If the total length of all the meteors were distributed equally between each meteor, how long would each one be?
A) one and one thirty sixth inches
B) one and one thirty eighth inches
C) one and one fortieth inches
D) one and one forty second inches
Answers
Answer:
I DID THE QUIZ!
Step-by-step explanation:
The answer is
1 1/40
can someone answer my question????i need help i’m already failing i’ll give brainlist and points:/
Answers
That should help
find the value of x ?
Answers
Answer:x=33.6
Step-by-step explanation:
You would set up the equation 6/5 = x/28 Then you would cross multiply 6•28 then divide by 5
Answer:
Answer:33.6
Step-by-step explanation:
I just know it.
round 58.9871 2 decimal place
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Answer:
58.9871 rounded to the second decimal place is 58.98.
Step-by-step explanation:
Carlos needs 2/3 cups of raisins to make one batch of oatmeal bars. How many cups of raisins does Carlos need to makes batches of oatmeal bars? Select the correct answer.
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Answer: 2²/₃ cups of raisins.
Step-by-step explanation:
Question wants to know the number of cups needed for 4 batches of oatmeal bars.
Each batch needs 2/3 cups of raisins to make.
If there are 4 batches to be made therefore, one must multiple the 2/3 cups to make one batch by 4 to find out the number needed to make 4 batches.
= 2/3 * 4
= 8/3
= 2²/₃ cups of raisins.