Answer:
They bought 2 pounds of ground beef and 16 pounds of ground chicken.
Step-by-step explanation:
Let b be the beef, and c be the chicken:
b + c = 18, the pounds of beef and the pounds of chicken added equal 18 pounds
4b + 2c = 40, the beef costs 4 dollars per pound and the chicken costs 2 dollars per pound. They add up to 40 dollars total.
Use the equation b + c = 18 and subtract c from both sides to get b = 18 - c. We replace this equation with b in 4b + 2c = 40 to get 4(18 - c) + 2c = 40 because b is 18 - c.
Now we solve for c:
4(18 - c) + 2c = 40
Simplify:
72 - 4c + 2c = 40
Combine Like Terms:
72 - 2c = 40
subtract 72 from both sides:
-2c = -32
Divide Both Sides by 2:
-c = -16
Make the Equation Positive:
c = 16
Okay cool, now we know that they bought 16 pounds of chicken, to find out how much beef the bought, replace c by 16 in b + c = 18 to get b + 16 = 18
b + 16 = 18
Subtract 16 from both sides:
b = 2, they bought 2 pounds of beef
To check, replace c with 16 and b with 2 in 4b + 2c = 40 to get
4(2) + 2(16) = 40
Multiply:
8 + 32 = 40
40 = 40
The equation is true
Sara has a spinner with 12 equal sections of blue, green, red and yellow. Out of ten spins she got red 6 times, blue 2 times, and green 2 times. Based on the results, find P(not green).
Answer:
3/4
Step-by-step explanation:
Are the forces in this image pushing or pulling?
Answer:
pulling
Step-by-step explanation:
24 31 12 38 15
For the following numbers please preform the following
1.Mean ( average )-
2.Mode ( number that occurs the most)-
3. Range ( highest - lowest)-5 number summary : box plot : box & whiskers ( All the same thing )
Min-
Q1 ( lower median )-
Q2 ( median )-
Q3 ( upper median )-
Max-
5. Interquartile Range- ( Q3-Q1)-
The variance is the average of the squared differences from the mean. Standard deviation is the square root of the variance
6. Variance
7. Standard Deviation
Answer:
Mean: 24
Mode: No mode
Range: 26
Min: 12
Q1: 13.5
Q2: 24
Q3: 34.5
Max: 38
IQR: 21
Variance: s^2 ≈ 117.5
Standard Deviation: 10.8
Step-by-step explanation:
PLEASE HELP I WILL GIVE BRAINLIEST TO WHOEVER ANSWERS GOOD PLEASE
Answer:
7 Right
Step-by-step explanation:
ΔABC is moved 7 units to the right to get ΔA'B'C'
Hope this helps :)
Answer:
C
Step-by-step explanation:
Can i get a brainliest
Which of the following is not a function?
a(3,1), (-3, 2), (4, 5), (-4, 5), (0, 0)
b(1, 2), (3, 4), (1, 5), (5, 7), (2, 4)
c(-4, 1), (-2, 3), (-1, 5), (0, 6), (-3, 5)
d(1, 3), (2, 3), (4, 5), (6, 4), (8, 9)
please help I'm timed.
Anyone got the answers to the 2021 7th grade Math EOG???
Answer:
Thats a state test
Step-by-step explanation:
Answer:
Isnt that a state test XDDDDDD
Step-by-step explanation:
Which figures below are congruent?
1 and 2
2 and 3
1 and 3
2 and 4
Answer: Your answer is 1 and 3
Step-by-step explanation: congruent means same or identical and 1 and 3 are identical
Answer is 1 and 3
Step-by-step explanation I did da quiz and got it correct.
Evaluate the following expression.
12÷4×32+(4−2)5
Answer:
answer is 111
Step-by-step explanation:
Answer:
Answer:12÷4×32+(4−2)5 = 106
This is the right Answer for your question :3
I hope you are having a great day ❤️❤️❤️❤️
Which expressions can he use to find the total area of the kite? Check all that apply.
A) 40 times 108
B) 73 times 115
C) 40 times 33 + 40 times 75
D) 40 times 170
E) 80 times 108
(needs more than one answer, giving brainliest to the correct answer)
Answer:
Step-by-step explanation:
gh
Answer: A-(40)(108) and
C-(40)(33)+(40)(75
Step-by-step explanation:
what's 9+10?
if you know you know
Answer:
21
Step-by-step explanation:
duh.................
Help with this pleaseeeeeeeeeeeeeeeeeeee
Answer:
1. x<14
2. x≥50
3. x≤8
4. x≤75
Answer:
1. <
2. ≥
3. ≤
4. ≤
Step-by-step explanation:
since the first one says “less than” the opening of the sign is pointed towards the 14
for the second it says “at least” so it has to be 50 dollars or more
for the third it is “at most” 8. that means that the highest number is 8 so there can’t be a number greater than that. but they can be less
for the fourth it’s “no more” than 75 degrees so that means it has to be 75 degrees or less. It can’t be more
PLS HELP.
Jenna made one container of orange punch and served it to her friends at a picnic. The container served 10 people. About how big was the container?
Answer:
15 people
Step-by-step explanation:
exam help !!
For what value of A is the graph of Ax+6y = 12 perpendicular to the graph of 2x−3y = 4?
The value of A for the two graphs will be 9.
What is coordinate geometry?A coordinate plane is a 2D plane that is formed by the intersection of two perpendicular lines known as the x-axis and y-axis. A coordinate system in geometry is a method for determining the positions of the points by using one or more numbers or coordinates.
The two equations are Ax+6y = 12 and 2x−3y = 4. The value of A will be calculated as,
2x−3y = 4
y = 2/3x - 4/3
Ax+6y = 12
y = -A/6x +2
The slope of one graph will be inverse and the opposite to the other graph for the line to be perpendicular,
-3 / 2 = -A / 6
A = 9
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please help i will give brainliest just please help me
Answer:
its the first and second
Step-by-step explanation:
Please answer this, Thanks! (i'll give brainliest if right)
Answer:
see explanation
Step-by-step explanation:
12 is 2 × 6 then 6 × 9 = 54
45 is 9 × 5 then 2 × 5 = 10
Then the ratios are
2 : 9, 12 : 54 and 10 : 45
I WILL GIVE BRAINLIEST TO CORRECT ANSWER
Answer:
Step-by-step explanation:
This is actually really Easy.
The answer is 172,200
Please help me. I will give brainliest
Answer:
[tex]0 \leqslant f(x) < \infty [/tex]
The drawing plan for an art studio shows a rectangle that is 10.2 inches by 9 inches. The scale in the plan is 3 in.: 5 ft. Find the length and width of the actual studio. Then find the area of the actual studio.
some1 answer asap plz and thank u oh i will also be giving brainlist to the best/correct answer !
Answer:
Length: 19 feet
Width: 10 feet
Area: 190 feet
Step-by-step explanation:
This is a question about ratio.
Length: let be the actual length.
Width: let be the actual width.
Area: A = xy
help plz do by 12 i will give brainliest
which equation is positive.
Answer:
(-3)(4)/-6 or -12/-6 = 2 aka D
Step-by-step explanation:
negative times postive = negative divided by negative = postive
:D
PLEASE HELP ME!!!!! THIS IS TIMED PLEASE HELP!!
Directions: Graph a right triangle with the two points forming the hypotenuse. Using the sides, find the distance between the two points, to the nearest tenth (if necessary).
The points are (4,5) and (7,1)
Answer:
20 I think I hope it is correct
The formula for the volume of a rectangular prism is volume = length × width × height.
Which of the following is the BEST estimate of the volume of the rectangular prism below?
A. 16 cubic units
B. 54 cubic units
C.90 cubic units
D. 120 cubic units
Answer:
C
Step-by-step explanation:
The formula to work out the volume of a rectangular prism is:
V= w*h*l
Let's plug these nums. in:
V = (2.9)(9.7)(3.4) = 95.642
The closest answer is C ~ 90 cubic units
Hope this helps :)
HELLLLP!!!!! Seriosuly
Answer:
D
Step-by-step explanation:
When you divide a negative by a negative you get a positive
Answer:
-27
Step-by-step explanation:
You are cutting a rectangular piece of fabric in half along a diagonal. The fabric measures 28 inches wide and 1 1/4 yards long. What is the length (in inches) of the diagonal?
Answer:
45.61 inches
Step-by-step explanation:
Use the pythagorean theorem.
If the age of person A is 7 years more than that of person B and the sum of there ages is 25 years old how old is person A ? (Brainlest)
Answer:
32
Step-by-step explanation:
25 + 7 = 32
Plz help! Giving brainliest to a complete and correct answer. Absurd answers will be reported.
Answer:
Use absolute difference
Step-by-step explanation:
Given
The given parameters can be represented as:
[tex]Expense > Income[/tex]
[tex]Income - Expense< 0[/tex]
Required
Eliminate negative difference
To eliminate negative difference, Sara has to make use of absolute difference when calculating the difference between her income and expense.
Take for instance:
[tex]Income = 10[/tex]
[tex]Expense = 12[/tex]
The difference between both is:
[tex]Income - Expense = 10 - 12[/tex]
[tex]Income - Expense = -2[/tex]
But if she uses absolute difference, the result will be:
[tex]|Income - Expense| = |10 - 12|[/tex]
[tex]|Income - Expense| = |-2|[/tex]
[tex]|Income - Expense| = 2[/tex]
Pls helpppppp
Add the mixed numbers 9 3/5 + 10 3/5, write the answer as a mixed number.
Answer:
20 1/5
Step-by-step explanation:
hope this helps I'm sure its rights
Plz help me ASAP Thxs
Answer: 13
Step-by-step explanation:
help appriciated plz
Answer:
15%
Step-by-step explanation:
16/40
match each function with its rate of growth or decay
Answer:
y=5(1.05)^t=5% rate of growth
f(t)=50(0.95)^t=5% rate of decay
g(t)=50(1.5)^t=50% rate of growth
y=5(.5)^5=50% rate of decay
Step-by-step explanation:
y=5(1.05)^t= 1+x=1.05. x=0.05. 0.05= 5%, 5% rate of growth,
f(t)=50(0.95)^t=1-x=0.95, x=-0.05=-5%=5% rate of decay
g(t)=50(1.5)^t=1+x=1.5, x=0.5=50%, 50% rate of growth
y=5(.5)^5=1+x=0.5, x=-0.5=50%, 50% rate of decay
If this helps please mark as brainliest
The correct matching of the functions y = 5 · (1.05)ⁿ, y = 50 · (0.95)ⁿ, y = 50 · (1.5)ⁿ, and y = 5 · (0.05)ⁿ will be growth rate is 5%, the decay rate is 5%, the growth rate is 50%, and the decay rate is 50%, respectively.
What is an exponent?Consider the function:
y = a (1 ± r)ˣ
Where x is the number of times this growth/decay occurs, a = initial amount, and r = fraction by which this growth/decay occurs.
If there is a plus sign, then there is exponential growth happening by r fraction or 100r %
If there is a minus sign, then there is exponential decay happening by r fraction or 100r %
The functions are given as,
y = 5 · (1.05)ⁿ
y = 5 · (1 + 0.05)ⁿ
The growth rate is 5%.
y = 50 · (0.95)ⁿ
y = 50 · (1 - 0.05)ⁿ
The decay rate is 5%.
y = 50 · (1.5)ⁿ
y = 50 · (1 + 0.5)ⁿ
The growth rate is 50%.
y = 5 · (0.05)ⁿ
y = 5 · (1 - 0.5)ⁿ
The decay rate is 50%.
The correct matching of the functions y = 5 · (1.05)ⁿ, y = 50 · (0.95)ⁿ, y = 50 · (1.5)ⁿ, and y = 5 · (0.05)ⁿ will be growth rate is 5%, the decay rate is 5%, the growth rate is 50%, and the decay rate is 50%, respectively.
More about the exponent link is given below.
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