Answer:
Mayra has 13 nickels
Step-by-step explanation:
Given
Represent dimes with D and nickels with N.
So, from the first statement:
[tex]0.10D + 0.05N = 2.95[/tex]
From the second statement:
[tex]D = 2N - 3[/tex]
Required
Find N
Substitute 2N - 3 for D in [tex]0.10D + 0.05N = 2.95[/tex]
[tex]0.10(2N - 3) + 0.05N = 2.95[/tex]
Open bracket
[tex]0.10*2N - 0.10*3 + 0.05N = 2.95[/tex]
[tex]0.20N - 0.30 + 0.05N = 2.95[/tex]
Collect Like Terms
[tex]0.20N + 0.05N = 2.95+0.30[/tex]
[tex]0.25N = 3.25[/tex]
Make N the subject:
[tex]N = \frac{3.25}{0.25}[/tex]
[tex]N = 13[/tex]
Jeremy used 5/6 slices of bread throughout the week. If there was 24 slices of bread, how many slices did Jeremy use?
18
18
18
18 dude the answer is 18
Answer:
18
Step-by-step explanation:
Adult Great Basin rattlesnakes have a mean length of 32.3 inches and a standard deviation of 5.3 inches; the length of adult Southern Pacific rattlesnakes is also 32.3 inches on average, but with a standard deviation of 7.95 inches. Both species have lengths that follow a normal distribution. You select a random sample of 36 Great Basin rattlesnakes and 100 Southern Pacific rattlesnakes. Which is more likely be shorter than 29.65 inches
Using the normal distribution and the central limit theorem, it is found that the sample of 36 Great Basin rattlesnakes is more likely to be shorter than 29.65 inches.
Normal 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 has standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For the Sample of 36 Great Basin rattlesnakes:
The mean is [tex]\mu = 32.3[/tex].The standard deviation is [tex]\sigma = 5.3[/tex].Sample of 36, hence [tex]n = 36, s = \frac{5.3}{\sqrt{36}} = 0.88[/tex]We are interested in the percentile of 29.65 inches, hence [tex]X = 29.65[/tex].Then:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{29.65 - 32.3}{0.88}[/tex]
[tex]Z = -3.01[/tex]
For the Sample of 100 Southern Pacific rattlesnakes:
The mean is [tex]\mu = 32.3[/tex].The standard deviation is [tex]\sigma = 7.95[/tex].Sample of 100, hence [tex]n = 100, s = \frac{7.95}{\sqrt{100}} = 0.795[/tex]We are interested in the percentile of 29.65 inches, hence [tex]X = 29.65[/tex].Then:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{29.65 - 32.2}{0.795}[/tex]
[tex]Z = -3.33[/tex]
Due to the higher z-score, the random sample of 36 Great Basin rattlesnakes is at a higher percentile, hence it is more likely to be shorter than 29.65 inches,
To learn more about the normal distribution and the central limit theorem, you can take a look at https://brainly.com/question/24663213
A building is 52 meters tall. The building next to it is 50.36 meters tall. What is the difference between the heights of the buildings?
Answer:
1.64 meters
Step-by-step explanation:
Subtract 52 - 50.36 to find the difference between the heights. You get 1.64 meters.
Hope it helps!
The segments shown below could form a triangle.
Answer:
False
Step-by-step explanation:
It's been a while since I did this but here we go:
So to find if the triangle lengths are possible, we take the shorter two lengths and we add them.
Those shorter two lengths sum have to be greater than the longest length.
I hope this helps.
Can somebody help me, I'm being timed!
Answer:
I think its -- linear postulate
Step-by-step explanation:
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA POINTS*..
IM GIVING 40 POINTS !! DONT SKIP :((.
Answer:
D
Step-by-step explanation:
1 bag of pretzels cost four dollars. Five bags of pretzels cost $12.00. Which has the lower unit price??
Answer:
The 5 bags of pretzels.
Step-by-step explanation:
Because if you were to buy 5 individual bags you would end up paying $20.00, instead of $12.00
Answer:
The second option
Step-by-step explanation:
In order to find the unit price of each, consider the quotient of amount of money per bag:
Case 1:
$4/ 1 bag
Case2:
$12 / 5 bags = $2.4 / 1 bag
Therefore, the second option is the one with lower unit price.
Substitute the given value and evaluate the expression: ( 27 1/2 + E squared) ÷ 1/3, for E is = 5
Answer: 115.5
Step-by-step explanation:
[tex]\frac{(27 * \frac{1}{2} + e^{2} )}{\frac{1}{3} } \\\\e = 5\\\\\\27 * 0.5 + 5^{2} = 13.5 + 25 = 38.5\\\\\frac{38.5}{\frac{1}{3} } = 3 * 38.5 = 115.5[/tex]
andre is making a dessert that calls for 1 1/3 cups of butter if he already has 1/4 cup of butter how much more does andre need
Answer:
1 1/12 cupsStep-by-step explanation:
Required amount of butter = 1 1/3 cupsAlready has = 1/4 of a cupNeeded:
1 1/3 - 1/4 = 4/3 - 1/4 = 16/12 - 3/12 = 13/12 = 1 1/12 cupsHow do I solve Y=2/3x-1 and y=3
Answer:
Step-by-step explanation:
Put the y value where it belongs-
3=2/3x-1 Now add like terms (if you add one to negative one it cancels out)
+1 +1
4=2/3x Divide (I used a calculator)
x=6
A standard amount for a tip in a restaurant is 35% of the meal cost. True or false
Answer: False
Step-by-step explanation:
it’s usually 20%
Answer:
False
Step-by-step explanation:
1. Normally it is 20%.
2. Move yous decimal one place to the left
3. Round this number to the next easy coin amount
4. Double that number
That is roughly 20%
in. 2 4 in. 5 in. 3 in.
whats the volume
Answer:
not sure what shape you meant need more info but it should be 360 inches
^3
Step-by-step explanation:
Write -5 1/2
as a decimal number.
15 is 9 more than j I need an equation
Answer: j = 6
Step-by-step explanation:
the answer is six because the question says 15 is 9 more which is simple subtraction so u do 15-9=6.
Answer:
you have 15 cats but your neighbor had 9 more than you but your mom has J cats. How many cats do you all have together
Step-by-step explanation:
¡Ayuda, por favor!
La fórmula de Lorentz para la contracción en la teoría de la relatividad relaciona la longitud L de un objeto, que se mueve a una velocidad de V con respecto a un observador, con su longitud L0 en reposo. Si c es la velocidad de la luz. entonces:
L²=L0 ² (1- V²/C²)
¿Para qué velocidades L será menor que 1/2 L0? Exprese su respuesta en términos de c.
Answer:
I don't understand.............
A car dealership decreased the price of a certain car by 12%. The original price was $37,400.
Fill in the blank to write the new price in terms of the original price. Write your answer as a decimal. New price= × Original price
Use your answer in part (a) to determine the new price. Newprice: $
Answer:
(b) The new price of car is $43584.
Step-by-step explanation:
What is the answer to the following equation:
1 + 1 = x
Answer:
1 + 1 = x
X = 2.
don't delete my answer this time.
again.. if you are so smart why didn't you solve it yourself.
I know how you'll take revenge.
by deleting. my answer ? you can do that if you want.
cause ill still get the point tho. LOL.
Dean is comparing prices on ground beef. Store A is selling 5 pounds of ground beef for $23.49. Store B is selling 8 pounds of ground beef for $36.96. Which store is offering the better deal on ground beef? Show work
Answer:
Store B
Step-by-step explanation:
First you need to set up an equation for each store
Store A (you have 5 pounds of something sold at $x per pound. which together totals $23.49)
[tex]5x=$23.49[/tex]
Store B (you have 8 pounds of something sold at $x per pound. which together totals $36.96)
[tex]8x=36.96[/tex]
Then you want to isolate the x for each equation to find the price per pound. You do this by diving each total cost, by how many pounds that you get.
Store A: $23.49/5 pounds= $4.698
Store B: $36.96/ 8 pounds = $4.62
This gives you a price per pound, so B is the correct answer because B is $0.07 cheaper per pound, giving you the better deal.
Challenge A large university accepts 60% of the students who apply. Of the students the university
accepts, 35% actually enroll. If 10,000 students apply, how many actually enroll?
students would actually enroll. (Type a whole number.)
Answer:
man i cant really say
Step-by-step explanation:
if a number n is a multiple of two,then n is even.
Answer:
yes any multiple of 2 is even
Sam spins a wheel shown below. What is the probability that it lands on
a number less than 6?*
Answer:
No wheel shown
Step-by-step explanation:
Evaluate -2x+6y when x= -3 y=-1
Answer:
0
Step-by-step explanation:
Substitute x for -3 and y for -1:
= -2(-3) + 6(-1)
= 6 + -6 (or 6 - 6)
= 0
please help me!!!!! its due tonight!!!!!!
Answer:check explanation below
Step-by-step explanation:
Okay so for Part A: since B is the midpoint of SM, SM=SB+BM. Therefore, you can set them both equal to each other which would be 4x=98.3. You divide both sides by 4 to get the value of x which is 24.575. Now you substitute 24.575 back into 4x and you get 98.3. Since SM=SB+BM, you do 98.3+98.3 and SM=196.6.
Part B: For part b you do the same thing as A to find the values of x y and x. You already know that x=24.575. For Y, since T is the midpoint of DS you can set ST=TD. This means that 123.4=2/5y. When you solve for y you get y=308.5. Lastly, for z since N is the midpoint of MD, MN=ND. So 102=7/10z. When you solve for z you get approximately 145.7. Now you just add them together -- 24.575+308.5+145.7= 478.775.
Part C: NT is half of SM. Since SM is 196.6, NT is 98.3. TB is half of MD. MD is 203.99 so TB is 101.995. BN is half of SD. SD is 246.8 so BN is 123.4
So, NT+TB-BN is 98.3+101.995-123.4 which equals 76.895
$20 haircut; 10% tip Find the total cost
A. $2.00
B. $18.00
C. $22.00 0
D. $40.00
Answer:
answer is c
Step-by-step explanation:
Which of the following integers is a solution to the inequality below?
-3x - 7 ≤ -7x - 27
Select one:
a. -6
b. 1
c. -3
d. 4
Solve 25t+5/3<-9 for t.
Answer:
t<-32/75
hope it's helpful ❤❤❤❤❤❤
THANK YOU.
#
Answer:
t < -32/75
Isolate the variable by dividing each side by factors that don't contain the variable.
Will mark brainliest!
(please don't just copy your answer from another one. The other one available is wrong, so if you were to copy it, it would be a waste.)
How are rational exponents and radicals related? Summarize how to rewrite a rational power as a radical term using an example of your own.
Answer:
Hi
Step-by-step explanation:
Rational exponent are exponents written in the form of a fraction.
A rational power can be rewritten as a radical in the following way: the bottom of the rational exponent is the root, while the top of the rational exponent is the new exponent on the radical.
Example: X^(1/2)= √X
Will give brainliest
Gor is running a bakery he has made a street sign to direct people to his bakery
A 645
B 300
C 585
D 390
Answer:
C pls can i get brainlist
Step-by-step explanation:
Plssssssssssss.ssssssssss
Answer:
6 yards in two hours
Step-by-step explanation:
3 times 2 is six
Answer:
6 hours
Step-by-step explanation:
beacause if you times the 3×2=6hours
#carry on learning
Taylor opened a savings account with $425. After 2 years, the total interest earned was $10.20. What was the annual interest rate?
Answer:
R = 1.2%
Step-by-step explanation:
Given the following data;
Principal = 425
Time = 2
Simple interest = 10.20
To find the annual interest rate;
Mathematically, simple interest is calculated using this formula;
[tex] S.I = \frac {PRT}{100} [/tex]
Where;
S.I is simple interest. P is the principal. R is the interest rate. T is the time.Substituting into the equation, we have;
[tex] 10.20 = \frac {425*R*2}{100} [/tex]
[tex] 10.20 = \frac {850R}{100} [/tex]
Cross-multiplying, we have;
[tex] 1020 = 850R [/tex]
[tex] R = \frac {1020}{850} [/tex]
R = 1.2%
Therefore, the annual interest rate is 1.2 percent.
