Answer:
67 gallons.
Step-by-step explanation:
To determine how many gallons of a 70% antifreeze solution must be mixed with 90 gallons of 15% antifreeze to get a mixture that is 60% antifreeze, the following calculation must be performed:
0.15 x 90 + 0.70 x 10 = 20.5 / 100 = 0.20
0.15 x 90 + 0.70 x 30 = 34.5 / 100 = 0.34
0.15 x 90 + 0.70 x 60 = 55.5 / 100 = 0.55
0.15 x 90 + 0.70 x 67 = 60.4 / 100 = 0.60
Thus, 67 gallons of 70% antifreeze solution will be needed to achieve a 60% mix of that solution.
Please help!!!!!!!!!!!!!!!!!!!!!
can someone help plssss
Answer:
Step-by-step explanation:
11y-36=63
11y=99
y=9
You place a 1-dollar bet on the number 17 at Las Vegas, and your friend places a 1-dollar bet on black (see Exercises 1.1.6 and 1.1.7). Let X be your winnings and Y be her winnings. Compare E(X), E(Y ), and V(X), V(Y). What do these computations tell you about the nature of your winnings if you and your friend make a sequence of bets, with you betting each time on a number and your friend betting on a color
Answer:
E(x) = -$0.05263
E(y) = -$0.05263
V(x) = 0.9972
V(y) = 32.23
the expectations are the same, both will lose the same amount of money if they play for 38 times.
Though Variance is different. The girl betting on colors has little chance to gain and lose but the boy betting on number has huge deviation
Step-by-step explanation:
Given that; you place a 1-dollar bet on the number 17 at Las Vegas and your friend places a 1-dollar bet on black.
Let x represent your winnings and y represent your friends winnings
we know that, There are 18 black slots, 18 red slots and two green slots (0 and 00) on a US roulette wheel.
so, the chances of getting black(red) = 18/38
now, E(y) = (18/38)$1 + (20/38)(-$1)
E(y) = -$0.05263
Now, bets made on the chart of the various numbers 1 to 36 and zero, Just put a chip down in the middle of the square with the number you select. If it comes up, it pays 35-to-1. It is called a straight up bet.
hence, the chance of getting selected number will be 1/38
so E(x) will be;
E(x) = (1/38)$35 + (37/38)(-$1)
E(x) = -$0.05263
So, V(x) will be;
V(x) = [ 1 - (1/19)² ]
= 1 - 0.00277
V(x) = 0.9972
V(y) = { [ (35)² × (1/38) ] - (1/19)² }
= 32.2368 - 0.00277
V(y) = 32.23
Therefore, the expectations are the same, both will lose the same amount of money if they play for 38 times.
Though Variance is different. The girl betting on colors has little chance to gain and lose but the boy betting on number has huge deviation.
Use the empirical rule. the mean speed of a sample of vehicles along a stretch of highway is 66 miles per hour, with a standard deviation of 4 miles per hour. estimate the percent of vehicles whose speeds are between 62 miles per hour and 70 miles per hour. (assume the data set has a bell-shaped distribution.)
Answer: 99.7
Answer:
The percentage of that vehicles whose speeds are between 62 miles per hour and 70 miles per hour
P(62≤X≤70) = 68.76
Step-by-step explanation:
Step(i):-
Given that the mean of the Population = 66miles per hour
Given that the standard deviation of the Population = 4 miles per hour
Let 'X' be the random variable in normal distribution
Let x= 62
[tex]Z = \frac{x^{-}-mean }{S.D} = \frac{62-66}{4} =-1[/tex]
let x=70
[tex]Z = \frac{70-66 }{4} = \frac{70-66}{4} =1[/tex]
Step(ii):-
The probability that vehicles whose speeds are between 62 miles per hour and 70 miles per hour
P(62≤X≤70) = P(-1≤Z≤1)
= P(z≤1) -P(Z≤-1)
= P(Z≤1)+P(Z≤1)
= 2×P(Z≤1)
= 2×0.3438
= 0.6876
The percentage of that vehicles whose speeds are between 62 miles per hour and 70 miles per hour
P(62≤X≤70) = 68.76
The RMS Titanic has 2,224 people on board ship (including children). There was only enough lifeboat space for 1.178 people.
What is the probability of survival? List as a whole percent
Answer:31.6
Step-by-step explanation: 31.6 percent survived and 53.4 could have!
Mr. Marlon pays minimum wage to the cashiers in his store. If minimum wage is $7.25 per hour, how much does a cashier make who works 40 hours per week?
Answer:
$290
Step-by-step explanation:
Because 7.25×40=290
PLZ HELP ME What shape is this cross-section?
Answer:
i'm not sure if i'm right but think is cube
The average smoker typically pays 15% higher life insurance costs than the average non-smoker. If the monthly cost to a non-smoker is $500 dollars per month, how much would the average smoker pay per month for the same life insurance policy?
a) $500.15
b) $515.00
c) $533.00
d) $575.00
Answer:
$75
Step-by-step explanation:
The average smoker pay 15% life insurance than the non-smoker
The monthly cost of a non-smoker is $500 per month
Therefore the amount that would be paid by the average smoker in a month can be calculated as follows
= 500 × 15/100
= 500 × 0.15
= 75
Hence the amount to be paid is $75
What is the median of the following data set?
{13, 18, 13, 14, 13, 16, 14, 21, 13}
A. 13
B. 13.5
C. 14
D. 15
The median of the data is 14
What is median?The median is the middle number in an ordered data set.
Given:
{13, 18, 13, 14, 13, 16, 14, 21, 13}
First all the data according to ascending order, we get
13, 13, 13, 13, 14, 14, 16, 18, 21
So, the median is the 5th term which is 14.
Learn more about median here:
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Which of these are like terms in the following expression:
3x + 7 + 9x + 24y + 2x2
O 7, 24y
0 3x, 9x
O 3x, -9x
O 3x. -9x, 2x2
Answer:
The second one (3x, 9x)
Step-by-step explanation:
Like terms are the terms that either have the same variable or have no variable.
3x and 9x are the like terms in the given expression.
The given expression is 3x+7+9x+24y+2x².
What are like terms?Like terms are those terms whose variables and their exponent power are the same. The coefficient of these variables can be different. Algebraic-like terms are terms that are similar to each other
In the expression 3x+7+9x+24y+2x²
Terms 3x and 9x have the same variables and their exponents also same.
So, 3x and 9x are like terms
Therefore, 3x and 9x are the like terms in the given expression.
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Please
All steps
Trigonometry
ANSWER ASAP:
Rupesh is mowing grass to save money for a vacation. He charges $12 20
per yard. Rupesh already has $40 saved to use on the vacation. Which
inequality can be used to determine how many yards Rupesh needs to
mow in order to have at least $148 to use on vacation?
Answer:
Step-by-step explanation:
12y + 40 ≥ 148
12y ≥ 108
y ≥ 9
Rupesh must mow at least 9 more yards to have
the $148 he needs.
Find the value of the power.
7^4 =
Answer:
Answer:
2401
Step-by-step explanation:
7*7*7*7=2401
Answer:
28
Step-by-step explanation:
Write the rational number as a decimal. 7 over 40
Answer:
0.175 is a decimal and 17.5/100 or 17.5% is the percentage for 7/40.
Answer: 0.175
Step-by-step explanation:
Which fraction is in simplest form? 3/12 5/10 2/3 4/6
Answer:
2/3 is in simplest form, the other three fractions can be reduced
Will give brainliest
Answer:
.c
Step-by-step explanation:
8
Fill in the ratio table, where all ratios are equivalent.
А
B
4
9
20
18
24
26
28
99
Answer:
i think that looks right
Step-by-step explanation:
what do you have to do??
Write a story that could represent this math problem.
4x 3/8
Answer:
id.k im sorry
Step-by-step explanation:
How do I go back to my account from Saturday?
Every 3 Sundays my computer has to re-set so I lost my account and I want to go back to it. Can you help me?
Answer:
Save the password and username of brainly, and the next time it happens you just have to login from the information (password and username) you saved. You won't lose your account then.
Hope this helps you!
Step-by-step explanation:
what is the deep meaning of slope
Step-by-step explanation:
the slope or gradient of a line is a number that describes both the direction and the steepness of the line.
Why is the grandma across the street beating up a dude.
1. She a gangster
2. She was robbed
3. That's her ex she f.cked cause he was young
4. She crazy
If you had $20 US, estimate how many Yen and Pounds you would have. Show your work.
please help
Answer:
$20 USD equal 2094 JPY
Step-by-step explanation:
Amanda has 5 purple grapes and 8 red grapes. Select the ratios that compare the number of red grapes to the total number
of grapes. Mark all that apply.
8 to 5
8:13
F8
13
Answer:
8 to 5
dassit
Step-by-step explanation:
bc for every 5 graped u hv 8
Let f(x) = 8x - 7.
What is (4)?
A.39
B.25
C.32
D.36
The Kelly Students Council sold holiday swags for $10 for a fundraiser.. They spent $90 on materials to make the swags.. If they want to make at least $400,, how many swags do they need to sell? Write and solve the inequality.
Answer:
the answer would be 49
Step-by-step explanation:
they need to sell 49 to get their money back and make the 400 dollar goal
Rachel is purchasing a condominium and is financing $485,000 with a 30-year 6/1 ARM at 4.95% with a 1/10 cap structure. What will her payments be at the beginning of year 7?
Answer: Rachel's payment will be $2,588.78
Step-by-step explanation:
Given that;
Loan amount L = $485,000
number of months n = 30 × 12 = 360
Interest rate per month C = 4.95 / (100 × 12) = 4.95/1200 = 0.004125
Now, using the formula
P = L[ c ( 1 + c )ⁿ / ( 1 + c )ⁿ - 1 )
we substitute
P = 485,000 × [ 0.004125 ( 1 + 0.004125 )³⁶⁰ / ( 1 + 0.004125 )³⁶⁰ - 1 )]
P = 485,000 × [ 0.01815619 / 3.4015 ]
P = 485,000 × 0.0053377
p = 2,588.78
Therefore, Rachel's payment will be $2,588.78
Answer:
$2845.65
Step-by-step explanation:
yurr
AABC is reflected across the x-axis.
What is the new location of point B?
0 (-4,-2)
0 (4, -2)
O (4,2)
0 (-4,2)
Find the vertex of the parabola defined by the following equation. 3x^2-12x+11
Answer:
y= 3(x-2)^2-1
Step-by-step explanation:
When completely factored, 8x + 2y - 4
Answer:...
-4+8x+2xy
Step-by-step explanation:
A bottle holds 48 teaspoons of vanilla. The amount of vanilla remaining in the bottle decreases by 2 teaspoons per
batch of cookies. How much vanilla remains after 12 batches of cookies
Answer:
24 teaspoons
Step-by-step explanation:
2 times 12 = 24
48 - 24 = 24