Answer:
There are 32 students.
Step-by-step explanation:
If there are six 8-slice pizzas, that means that there is 48 slices total. If each student ate 1 1/2 slices, you can divide 48 and 1.5, and you will get 32. That is the number of students in the class. Hope this helps!
what is 0.25a−2.1=0.5a−4.1
Rewrite equation in slope intercept form, if necessary. Then determine whether the lines are parallel. Explain. 23. Y = -x + 6 24. Y - 7x = 6 25. 3x + 4y = 12 26. 2x + 5y = -1 x + y = 20 y + 7x = 8 6x + 2 = 6 10y = -4x - 20
Answer:
Step-by-step explanation:
Slope intercept form
[tex]y= mx + c[/tex]
m=slope
c= intercept
1) y= -x + 6
2) y=7x + 6
3) y= -3/4x + + 3
4) y= -2/5x - 1/5
5) y= -x + 20
6) y= -7x + 8
7) y= -3x + 3
8) y= -2/5x -2
Line 1 and 5 are parallel because both have the same slope of -1
line 4 and 8 are also parallel as the their slopes are -2/5
x²+x-90=0 using completing the square method
Answer:
x = - 10, x = 9
Step-by-step explanation:
Given
x² + x - 90 = 0 ( add 90 to both sides )
x² + x = 90
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2([tex]\frac{1}{2}[/tex] )x + [tex]\frac{1}{4}[/tex] = 90 + [tex]\frac{1}{4}[/tex]
(x + [tex]\frac{1}{2}[/tex] )² = [tex]\frac{361}{4}[/tex] ( take the square root of both sides )
x + [tex]\frac{1}{2}[/tex] = ± [tex]\sqrt{\frac{361}{4} }[/tex] = ± [tex]\frac{19}{2}[/tex] ( subtract [tex]\frac{1}{2}[/tex] from both sides )
x = - [tex]\frac{1}{2}[/tex] ± [tex]\frac{19}{2}[/tex] , thus
x = - [tex]\frac{1}{2}[/tex] - [tex]\frac{19}{2}[/tex] = [tex]\frac{-20}{2}[/tex] = - 10
x = - [tex]\frac{1}{2}[/tex] + [tex]\frac{19}{2}[/tex] = [tex]\frac{18}{2}[/tex] = 9
1/2 divided by 3/2
answer now
Answer:
Step-by-step explanation:
1/2 ÷ 3/2
Copy dot flip
1/2 * 2/3
Rewriting
1/3 * 2/2
1/3 * 1
1/3
Answer:
0.33333333333
Step-by-step explanation:
Look at the picture, and please hurry!
Answer:
Step-by-step explanation:
he is poooooooooooooorrrrrrrrrrrrrrrrrr
what is 6/22 as a percent
Step-by-step explanation:
[tex] \frac{6}{22} \times 100 \\ \\ \frac{3}{11} \times 100 \\ = 27.3[/tex]
Answer:
23%
Step-by-step explanation:
also just divide the numerator by the denominator
hope this help u :)
PLEASE HELP Rob wants to buy a new canoe that will cost $720. How many months will it take him to save enough money to buy it if his cash inflows average about $420 a month and his current cash outflows are $360 a month?
Answer:
12 months
Step-by-step explanation:
if the amount of money rob makes a month is $420 and the amount he spends a month is $360 then subtract the two. if you do this you should get 60 and the you find 60 times what = $720
4√10 • 3√ 15
A. 60√6 or
B. 5√6
Which one?
Answer:
A. 60√6
Step-by-step explanation:
√10 * √ 15 = √ 150
√ 150 = 5√ 6
4 * 3 = 12
12 * 5 = 60
The answer is 60√ 6
help -2 x 8/3 it's multiplecation
Answer: -16/3
Step-by-step explanation:
-2 (8/3)
(-2/1)(8/3)
((-2)(8))=-16
1(3)=3
-16/3
Answer:
-2 x 8/3 = -16/3
Step-by-step explanation:
When multiplying fractions, you multiply the numerators (numbers above the fraction line) and the denominators (numbers below the fraction line) with each other. If one of the numbers is not visibly a fraction, remember that all numbers are actually fractions - you must simply write in the denominator of 1. In this case, you'd write [tex]-\frac{2}{1} * \frac{8}{3}[/tex], which would then give you the result of [tex]-\frac{16}{3}[/tex] (-2 x 8 = -16, 1 x 3 = 3).
Hope this helped!
bonus fun fact: the fraction line is called the vinculum.
what is the square root of 14564
Solve the following system of equations 2x + y equals 1 -4x + y equals negative 1
Answer:
d
Step-by-step explanation:
I need some help real quick. thank you
[tex] \frac{3}{4} |5 + x| = 6[/tex]
[tex]10 - |x| = 15[/tex]
John is 4 years younger than twice Michael's age. Michael is John's younger brother. John is 18 years old. How old is Michael? Choose the equation that represents the situation.
Answer:
18=2m-4
Step-by-step explanation:
18 is the age of John. M represents the age of Michael. John is older than Michael so instead of 18=4-2m it is 18=2m-4. If you do 8=4-2m it will be inccorect because it will give you a negative. Michael is 11 years old.
Please help me with #2
Answer:
Step-by-step explanation:
Answer is B
The cost of 24 caps is $150. Find the cost of each cap.
Answer:
6.25
Step-by-step explanation:
Divide 150 $ to 24 caps on your calculator
If the cost of 24 caps is $150, then the cost of each cap is $6.25.
What is unitary method?We know that a single unit's value can be determined from the values of multiple units, and multiple units' values can be determined from the values of single units using the unitary method. We typically use this technique for math calculations. We are able to locate the missing value using the unitary method.
How to solve it?Given that the cost of 24 caps is $150.
Then the cost of 1 cap is 150/24 = $6.25
Therefore we can conclude that If the cost of 24 caps is $150, then the cost of each cap is $6.25.
Learn more about unitary methods here -
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how do u make someone brainlest
Answer: There would be a crown on the top right side of their comment
Which one?
A. B. C. or D?
Answer:
C
Step-by-step explanation:
hope this helps
BRAILIEST? PWEASE
During a baseball game, a baseball player got 4 hits out of 12 times at bat. What is the "hit" per "at bat" ratio for this player?
Answer:
4:12
Step-by-step explanation:
he hit the bat 4 : out of 12 times
4:12
Which situation can be represented by the equation. 1500 - 50x = 2000 - 100x
Answer:
x= 10
Step-by-step explanation:
hope i help youuuuu :)
Which ordered pair is a solution to the system of equations?
y=4x
y= 3x + 2
The solution of the system of equations will be (2, 8).
What is substitution method?
To find the value of any one of the variables from one equation in terms of the other variable is called the substitution method.
Given that;
The system of equations are,
y = 4x
And, y = 3x + 2
Now,
Solve the linear equations as;
The system of equations are,
y = 4x .... (i)
y = 3x + 2 .. (ii)
Substitute y = 4x in equation (ii) as;
y = 3x + 2
4x = 3x + 2
4x - 3x = 2
x = 2
And, y = 4x
y = 4 × 2
y = 8
Thus, The solution of the system of equations will be (2, 8).
Learn more about the system of equation visit:
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do you think i should do airsoft i always wanted to
Answer:
Sounds like a good idea
Step-by-step explanation:
(mark this branliest if you do)
Answer:
YES
Step-by-step explanation:
Its so fun
How would you write 5^-3?
Answer:
You would make your number into a fraction to make your exponent positive which would be 1/5^3, then you simplify your exponent to get 1/125.
Step-by-step explanation:
The lifespans of zebras in a particular zoo are normally distributed. The average zebra lives 20.520.520, point, 5 years; the standard deviation is 3.93.93, point, 9 years. Use the empirical rule (68-95-99.7\%)(68−95−99.7%)left parenthesis, 68, minus, 95, minus, 99, point, 7, percent, right parenthesis to estimate the probability of a zebra living between 16.616.616, point, 6 and 24.424.424, point, 4 years.
Answer:
0.67894
Step-by-step explanation:
Given that :
Lifespan of zebra is normally distributed :
Mean(μ) = 20.5
Standard deviation (σ) = 3.93
Probability of Zebra living between 16. 6 to 24.4 years
Using the empirical rule :
Z = (x - μ) / σ
For : P(Z < x ) ; X = 16.6
Z = (16.6 - 20.5) / 3.93
Z = - 0.9923
P(Z < - 0.9923) = 0.16053
For : P(Z < X) ; X = 24.4
Z = (24.4 - 20.5) / 3.93
Z = 0.9923
P(Z < 0.9923) = 0.83947
Hence,
0.83947 - 0.16053 = 0.67894
Answer:
68%
Step-by-step explanation:
Adam drove 448 miles in 7 hours. If he drove at a constant rate, how far did he travel each hour? (Please answer ASAP)
Answer:
64 miles per hour
Step-by-step explanation:
448/7=64 miles
Constant rate you can just divide the number by the time in this particular situation.
Given m||n, find the value of x.
+
(3x-2)
(2x+30)
Marcus and Jeremy both evaluated the expression −52 + 3. Marcus said the answer was −22. Jeremy said the answer was 28. Who is correct? Explain the error in the other student’s work.
Answer:
Step-by-step explanation:
Both of them are wrong the answer would be -49.
Answer:
Marcus is correct. Jeremy squared -5 instead of 5. The negative is not within parentheses, so it is not squared.
Step-by-step explanation:
anyone knows the answer?
Which function is continuous?
a. Number of children enrolled in a particular school as a function of time.
b. Outdoor temperature as a function of time.
c. Price of a stock as function of time.
d. Cost of U.S. postage as a function of the weight of the letter.
Answer: B. Outdoor temperature as a function of time
Step-by-step explanation:
just answered edge2020
A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is the number of 3-point questions and y is the number of 5-point questions, the system shown represents this situation.
x + y = 24
3x + 5y = 100
What does the solution of this system indicate about the questions on the test?
The test contains 4 three-point questions and 20 five-point questions.
The test contains 10 three-point questions and 14 five-point questions.
The test contains 14 three-point questions and 10 five-point questions.
The test contains 20 three-point questions and 8 five-point questions.
Is f strictly decreasing on the interval (0,1)?
Answer:
yes
Step-by-step explanation:
from (0,5) to (1,0), it is decreasing