Answer:
X=2
Step-by-step explanation:
•
The starting temperature of the
mixture is 20.2°C.
You heat the mixture.
The temperature changes by 22.5°C.
What is the new temperature of
the mixture?
Answer:
it is 20.9 C
Step-by-step explanation:
there
??????????????????FAST HELP PLZ
Answer:
[tex]y = \frac{2}{3} x - 2 \\ [/tex]
4 1/4 - 2 1/3 =
Sorry I’m no good with fractions
Answer:
1 11/12 should be the answer!
Answer:
1 11/12 or 23/12
Step-by-step explanation:
Convert the mixed numbers to improper fractions, then find the LCD and combine :)
Evaluate the expression.
Answer: 13
Step-by-step explanation:
A large sleep study involving over 5000 American teenagers examined how many hours the participants slept on the weekend. The nightly sleep times were distinctly non-normal with a mean of 10 hours and a standard deviation of 2 hours. Suppose we take a random sample of 100 nightly sleep times from this population. We can assume that the times in the sample are independent. What is the probability that the mean of these 100 sleep times is farther than 0.4 hours away from the population mean?
a) 0455
b) .02
c) 1
d) .02275
Answer:
.05
Step-by-step explanation:
Khan
Using the normal distribution and the central limit theorem, it is found that the probability that the mean of these 100 sleep times is farther than 0.4 hours away from the population mean is:
a) 0.0455Normal Probability DistributionIn a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
It measures how many standard deviations the measure is from the mean. After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X. By the Central Limit Theorem, the sampling distribution of sample means of size n, as long as n > 30, is approximately normal and has standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].In this problem:
Mean of 10 hours, hence [tex]\mu = 10[/tex].Standard deviation of 2 hours, hence [tex]\sigma = 2[/tex].Sample of 100, hence [tex]n = 100, s = \frac{2}{\sqrt{100}} = 0.2[/tex].We want the probability that the mean is farther than 0.4 hours away from the population mean, hence:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem:
[tex]Z = \frac{0.4}{s}[/tex]
[tex]Z = \frac{0.4}{0.2}[/tex]
[tex]Z = 2[/tex]
The probability is P(|Z| > 2), which is 2 multiplied by the p-value of Z = -2.
Z = -2 has a p-value of 0.0275.2 x 0.0275 = 0.0455Hence, option A is correct.
To learn more about the normal distribution and the central limit theorem, you can take a look at https://brainly.com/question/24663213
Which ratios form a proportion?
4/11 and 6/13
4/10 and 10/25
3/5 and 9/25
4/9 and 9/4
Answer:
Step-by-step explanation:
Now, in order for it to be a proportion, both the number and the denominator must turn to the other number by the same method. I'll clarify when we do the steps.
So, the first one is 4/10 and 10/25
The first thing that you would do is divide 10 by 4, and then 25/10
When you do that, it turns out that they both equal 2.5. This means that both the number and denominator go to the new number with the same method, multiplying by 2.5
So, the answer would be A
5 Gatos comen 30 ratones en 15 minutos.¿ Cuantos Ratones Comeran 7 gatos en 12 minutos?
Answer:
42 ratones
Step-by-step explanation:
Los gatos comen 6 ratones cada 5 minutos. Aplicar esto a 7 y 7x6 = 42. Perdón por el mal español
Please help!
Which angle is a vertical angle with ZEFD?
-
-
-
-
Answer:
<AFB
Step-by-step explanation:
The angle that is a vertical angle with <EFD would be the angle that is vertically opposite and equal to <EFD.
Taking a look at the diagram, yiu would observe that <AFB is vertically opposite to <EFD. Therefore, <AFB is a vertical angle with <EFD.
What is the sum of this sequence
1 + 2 + 3 + 4 + ... + 1002
Answer:
502,503
Step-by-step explanation:
Using Summation formula for 1 and 1 to N number
[tex]S=\frac{n(n+1)}{2} \\S=\frac{1002(1003)}{2} \\S=502,503[/tex]
Anna, Bertie and Carl share £135 in the ratio 5 : 4 : 6.
How much does Carl get?
Answer:
Anna gets £45, Bertie gets £36 and Carl gets £54
Step-by-step explanation:
→ Add the ratios together
5 + 4 + 6 = 15
→ Divide the amount by the total of ratios
135 ÷ 15 = 9
→ Multiply 9 by each part of the ratio
Anna = 5 × 9 = £45
Bertie = 4 × 9 = £36
Carl = 6 × 9 = £54
Which of the following equations have exactly one solution?
Choose all answers that apply:
Choose all answers that apply:
(Choice A)
A
-5x+12=5x+12−5x+12=5x+12minus, 5, x, plus, 12, equals, 5, x, plus, 12
(Choice B)
B
-5x+12=5x-5−5x+12=5x−5minus, 5, x, plus, 12, equals, 5, x, minus, 5
(Choice C)
C
-5x+12=-12x-12−5x+12=−12x−12minus, 5, x, plus, 12, equals, minus, 12, x, minus, 12
(Choice D)
D
-5x+12=-5x-12−5x+12=−5x−12
Answer:
B, C, D
I Just Did It On Khan Academy
Step-by-step explanation:
help me please will give brainliest
Are glazed tile on a floor at a constant rate he covers 150 square foot floor in 3 hours how many square feet does he cover in 4 hours
given the line plot below find the mean median mode and range 11,11,12,12,12,13,13,14,15,15,15,16,16,17,17,17,17,18,18
Answer:
Mean= 14.47368Meadian= 15Mode= 17Range= 7I need help ASAP please giving brainliest!
on monday ashia spent 5/6 of an hour praticing for 2/3 of an hour which equation shows corectly how much longer she on moday than on tuseday
Answer:
1/6
Step-by-step explanation:
2/3 x 2/2 = 4/6
5/6 - 4/6 = 1/6
She spent 1/6 of an hour longer practicing on Monday.
Juan went to a wholesale store to buy eggs for his restaurant. The wholesale store only sells eggs by the dozen, at $3.29 per dozen
What is the greatest number of individual eggs he can buy for $50.00?
192
182
180
150
Answer:
The answer is 4
Step-by-step explanation:
Answer:
Juan went to a wholesale store to buy eggs for his restaurant. The wholesale store only sells eggs by the dozen, at $3.29 per dozen
What is the greatest number of individual eggs he can buy for $50.00?
192182✓180150182 eggs is the right answer.Step-by-step explanation:
Cost of 12 eggs are $3.29
Cost of 1 egg is ($3.29/12)=$0.27
Juan has $50.00
Therefore, he could buy ($50/$0.27)=182 eggs
ONE PUNCH!
(Three! Two! One! Kill shot!)
Appearing! Certain victory! The strongest of all time!!
What're you saying? FRUSTRATION, nobody can stop me
ONE PUNCH! It's over! One victory after another!
I shout out!! I'm always victorious!! Total victory!!
Power! Get the power! Right up to the limit
HERO, I don't want voices praising me or an ovation
HERO, so I fight against evil in secret
(Nobody knows who he is.)
Foes are closing in and covering the sky. I won't turn my back on them
If I am a HERO, then I'm prepared with unwavering resolve, unleashing my fist
(Three! Two! One! Fight back!)
Appearing! Go on! Fair and square!!
What's going on? I can't feel a thing, my opponents are all gone!
JUSTICE! Enforcement! No point arguing about it!
I'll cut it off!! Cut off evil!! Hands together in prayer!!
Power! Get the power! ADRENALINE's overflowin'!
Power! Get the power! Strike with force with my disciplined technique!
HERO, even the strongest guys used to be tiny brats
HERO, I overcome my weaknesses and become stronger
(Nobody knows who he is.)
I just raise my fists, with the gods dwelling in them, and push onward
HERO, until I taste the dirt of defeat some day, a fighting HERO
I won't give up; I picture the future in my heart
I awaken and go to the world now, soaring high and strong
At all times, no matter what happens
HERO, I don't want voices praising me or an ovation
HERO, so I fight against evil in secret
(Nobody knows who he is.)
I just raise my fists, with the gods dwelling in them, and push onward
HERO, until I taste the dirt of defeat some day, a fighting HERO
A lonely HERO
I wanna be the strongest HERO!
Answer:
man haha, not me stalking ur page
Step-by-step explanation:
thanks again for the points, IM TAKING THEM >:D
A bakery offers a sale price of $2.60 for 4 muffins. What is the price per dozen?
Answer:
31.2
Step-by-step explanation:
2.60 times 4 is 10.4.
4 times 3 is 12
10.4 times 3 is 31.2
Answer:
Hello!
A dozen muffins would cost $7.80
----------------------------------------------------------------------------------------------------------------
So if you took for muffins the price would be $2.60 But thats not a dozen
Dozen = 12 muffins
So for 12 muffins you would have to take 4 muffins times 3 (4x3=12)
So to find the price you need to do $2.60 x 3 and you would get $7.80
Hope I helped!
Step-by-step explanation:
May I have brainliest I'm trying to level up!
</3 PureBeauty
Ivan chases a goat for 41 seconds. He runs at 7 meters per second.
How far does he go?
Translate and solve:17.433 is what percent of 14.9
Answer:
117%
Step-by-step explanation:
17.433=x/100(14.9)
1743.3/14.9=x
117
I need help ASAP giving brainliest!!
Answer:
isosceles and right
I'm not sure
Answer:
Isosceles and right
Step-by-step explanation:
The square in the corner indicates the triangle is a right triangle. The two lines represent congruence. Since the triangle has two equal lines, it is an isosceles triangle. Overall, the triangle is isosceles and right.
I knw don't know how to make
Answer:
Step-by-step explanation:
The number of bees in a hive doubles every year. A farmer starts a hive with 100 bees. After y years, the hive will contain B bees, where B = 100 · 2ʸ. How many bees will be in the hive after 3 years, assuming the hive continues to grow at this rate? (Answer must be in a complete sentence). *
Answer:
800 bees.
Step-by-step explanation:
If he starts with 100, after a year, it's 200, after another year, it's 400, and after a third year, it's 800.
It will be 800 bees in the hive after 3 years, assuming the hive continues to grow at this rate.
What are exponents?The exponents of a number are defined as the representation of a number that shows how many times a number is multiplied by itself.
We are given that number of bees in a hive doubles every year. A farmer starts a hive with 100 bees.
After y years, the hive will contain B bees, where;
B = 100 · 2ʸ.
Therefore, after 3 years, it will be;
B = 100 · 2³
B = 100 x 8
B = 800
Hence, It will be 800 bees in the hive after 3 years, assuming the hive continues to grow at this rate.
Learn more about exponentiation here:
https://brainly.com/question/26938318
#SPJ2
A container is 8/9 kg of berries is 2/3 full, how many kg can the container hold
Answer:
1.33kg of berries
Step-by-step explanation:
A container is 8/9 kg of berries is 2/3 full, how many kg can the container hold
2/3 of a container = 8/9kg
To get the amount of kg the container can hold, we will write;
1 container = x kg
Divide both expressions
2/3 = 8/9x
Cross multiply
2 * 9x = 3*8
18x = 24
x = 24/18
x = 1.33kg
Hence the container will hold 1.33kg of berries
3,456 squared divided by 455=?
Plz help me.
Answer:
26250.4087912
Step-by-step explanation:
I squared 3,456 by 3,456x3,456 then i divided the answer by 455
Answer: 455/69312
Hope this helps.
The picture has the question. Can someone plz help me?
Answer:
He will need 168 square feet. I think.
Step-by-step explanation:
A set of exam marks has mean 70 and median 65 marks. It is decided to subtract 10 from all the marks. For the new set of marks, what is the median?
Answer:
For the new set of marks, the median is of 55
Step-by-step explanation:
The median is the halfway point of a dataset, that is, the value that separates the lower 50% of the data set from the upper 50%.
In a data set, if we subtract or add all marks by x, the median will be subtracted or added by x.
In this question, we have that:
Median 65
From all marks, 10 is subtracted.
So, for the new set of marks, the median is of 65 - 10 = 55
The scatter plot and a line of best fit show the relationship between the number of hours Jimmy used his electronic gadgets and the number of batteries he used for the gadgets.
Which statement describes the relationship between the number of hours Jimmy used his different electronic gadgets and the number of batteries he used for the gadgets?
A.
Less than three batteries were used in five hours.
B.
Jimmy used seven batteries.
C.
For every increase in three hours of usage, Jimmy had to use two more batteries.
D.
For every decrease in three hours of usage, Jimmy had to use two more batteries.
Answer:
can you take a picture of the scatter plot or show the data for it? Then I can help you.
Step-by-step explanation:
write the equation that describes the line in slope-intercept form. slope = 5 point (2,-4)
PLEASE HELP!!!
Answer:
y = 5x - 14
slope intercept form is y = mx + b
m = slope
after substituting 5 in for m you end up with y = 5x + b
you substitute (2, -4) for x and y
-4 = 5(2) + b
next step is to solve for b.
(SORRY IF THIS IS CONFUSING )
