Answer:
s = c + 15
s + c = 27
substitute for s:
(c + 15) + c = 27
2c = 12
c = 6
s = 21
The system of equation which correctly represents the situation is s + c = 27 and s - c = 15.
What does a System of Linear Equations define?Linear equations involve one or more expressions including variables and constants and the highest exponent of the variable is 1.
System of linear equations involve two or more linear equations.
Given that,
Combined total of sheep and cows = 27
Number of sheep = Number of cows + 15
Let s represents the number of sheep and c represents the number of cows.
s + c = 27
s = c + 15 ⇒ s - c = 15
Hence the system of equation is s + c = 27 and s - c = 15.
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please helpppppp i will mark you braliest
Answer:
0.3
Explanation:
you multiply all numbers together to get 0.3
PLEASE HELP!! DUE SOON!!!
Find the surface area of the sphere (I can't upload the pic but I'll give the radius).
Radius 7 m
A. 56π m²
B. 784π m²
C. 392π m²
D. 196π m²
Answer:
D
Step-by-step explanation:
This is because the formula is 4×pi×r^2
So 4×pi×7^2
(7^2=49) now plug that in: 4×pi×49
Combine like terms: 4×49=196
Plug that into the equation: 196pi
{67, 68, 68, 71, 73, 73, 73, 74, 74, 74, 74, 75, 75, 77, 78, 79, 79, 80, 80}
What is the mode of the data?
68
71
74
75
Answer:
74
Step-by-step explanation:
Mode is the number that shows up the most in the data.
(d) Time T, in minutes, for a train journey of
a hours b minutes
Answer:
you didnt give a clear question
Step-by-step explanation:
wth
I keep getting this wrong. Which property is not used to simplify the following expression?
Answer:
Commutative Property of Addition
Step-by-step explanation:
Given are the first three terms of a sequence that is either arithmetic or geometric. If the sequence is arithmetic, find a1 and d. If a sequence is geometric, find a1 and r. 1/6,1/12,1/24
Answer:
a1 = 1/6
r = 1/2
Step-by-step explanation:
Given the sequence
1/6,1/12,1/24
The sequence is a geometric sequence since they have a common ratio
r = 1/12÷1/6 = 1/24 ÷ 1/12
r = 1/12 * 6/1 = 1/24 * 12/1
r = 1/2
Since a1 is the first term, hence a1 is 1/6 and common ratio r is 1/2
Tyrone wants a new 53 inch television for his bedroom. He plans to put the TV in a space that is 42 inches wide. Tyrone knows the TV is rectangular and has a height of 28 inches.
Enter True or False: The 53 inch TV will fit in the space_________
The width of the TV is _______inches.
Answer:
False
Step-by-step explanation:
Pls help ASAP I will do anything
Answer:
Imma guess
8^3 + 12
Step-by-step explanation:
DONT SEND A LINK TO DOWNLOAD FOR
Is (6, -4) a solution for the following system of equations? y=8-2x and x+3y=12
Answer:
(6, -4) does not fit with these two equations
Step-by-step explanation:
y = 8 - 2x
x + 3y = 12
fit (6, -4) into the equations
-4 = 8 - 2(6)
8 - 2(6) = 8 - 12 = -4
works for this one
6 + 3(-4) = 12
6 + 3(-4) = 6 - 12 = -6
doesnt work for this one
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
Answer:
B. 25%
Step-by-step explanation:
Total 16 students
4 scored above 90
so 4/16= 0.25
Answer: 25%
plz mark me as brainliest.
Helpp plzz with the one on the top I will mark brainliest
Answer:Its D i hope
Step-by-step explanation:
Simplifying Fractions
Simplify each fraction to its lowest terms.
1) 9 =
18
8) 4 =
16
15)
21 =
63
2) 8 =
10
9) 18 =
36
16)
30 =
84
6
3) =
8
6
10) =
42
50
17) =
125
4) 5 =
20
13
11) =
39
72
18) =
108
18
5) =
24
21
12) =
28
49
19) =
112
6
6) =
9
12
7) =
15
63
13) =
77
36
14) =
40
4
240
20) =
320
120
21) =
150
Answer:
1)1/2
8)1/4
15)1/3
2)4/5
9)1/2
16)17/40
3)3/4
10)1/7
17)2/5
4)1/4
11)1/3
18)2/3
5)3/4
12)3/4
19)7/16
6)2/3
7)4/5
13)9/11
14)9/10
20)3/4
21)4/5
I tried (in your order and replace / with = if you want)
In a 30% off sale, the price of an item is reduced by £27.
What is the original cost of the item?
Answer: the original cost of the item is 90$
Step-by-step explanation:
30% off of the item = 27$
27 dollar is 30% of the item
thus 27 = 0.30X
0.30X = 27
time both side by 10
3X = 270
270/3 = 90
Jimmy draws a triangle with sides of length 4, 10, and 8. He says that his triangle is acute because when you square the sides and use the pythagorean theorem, 16+ 100 64. Therefore the third side is "too small" to be the hypotenuse, making the triangle acute. You agree or disagree with jimmy? Explain and justify your answer.
Answer:
yes, it is an acute triangle because all angles are less than 90 degrees.
Step-by-step explanation:
e Fill in the char...
Fill in the chart converting between fractions, decimals, and percents.
Fraction
Decimal
Percent
1
8
1.125
What belongs in the cell circled in red?
Given the function y = -5x + 4, what is the range of the function if the domain is {-2, 0, 5}?
Answer:
90 hours
Step-by-step explanation:
{14, 4, -21} is the range of the function if the domain is {-2, 0, 5}
What is the function?A relationship between a group of inputs and one output is referred to as a function. In plain English, a function is an association between inputs in which each input is connected to precisely one output. A domain, codomain, or range exists for every function. Typically, f(x), where x is the input, is used to represent a function.
To find the range of the function, we need to plug each value in the domain into the given function and see what output (y-value) we get.
When x = -2:
y = -5(-2) + 4 = 14
When x = 0:
y = -5(0) + 4 = 4
When x = 5:
y = -5(5) + 4 = -21
So the range of the function is {14, 4, -21}.
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The drawing of a building, shown below, has a scale of 2 inches to 8.5 feet.
What is the actual height, in feet, of the house?
Answer:
36 1/8 feet
Step-by-step explanation:
x = height of house in feet
2"/8.5' = 8/5"/x
cross-multiply:
2x = 72.25
x = 36.125 or 36 1/8
Identify the figure. Then state how many bases, faces, edges, and vertices there are.
Name:
Bases:
Faces:
Edges:
Vertices:
Answer:
name: pentagonal pyramid
bases: one
faces: 5
edges: 10
vertices: 6
Step-by-step explanation:
On Monday, 355 people ate at The Burger Barn. On Tuesday, 339 people ate there. On Wednesday, 394 people ate there. About how many people ate at The Burger Barn altogether on the three days?
A computer game company conducts a survey of random sample of customers to determine their favorite type of game. The results of the survey are shown below based on the survey results how many customers are expected to prefer fantasy games out of the 1,000 customers?
Answer:
1.6% of customers
Step-by-step explanation:
Zapisz w postaci jednej potęgi (zapisz obliczenia):
32 * 83 : 42 =
0,0014 *0,012 : 0,13 =
(53 * 252)4 =
27 * 253 *83 * 510 =
211 * 67 : 37 =
Zapisz w postaci notacji wykładniczej i odwrotnie:
403000000 =
2,4 * 109 =
0,00000509 =
5,015 * 10-5 =
Answer:
1. 62,3
2. 0,000129230769
3. 53424
4. 257027760
5. 382,081081
6. ?
7. 261,6
8. ?
9. 45,15
Use the box method to distribute and simplify (5x – 3) (-4x – 5). Drag and drop
the terms to the correct locations of the table.
(5x – 3) (- 4x – 5)
NEED HELEOEO
Answer:
your answer is below
-20x +15
Suppose c(x) = x3 - 24x2 + 30,000x is the cost of manufacturing x items. Find a production level that will minimize the average cost per item of making x items.
Answer:
hence the required minimum production level is 12units
Step-by-step explanation:
Given the cost function expressed as c(x) = x^3 - 24x^2 + 30,000x
The average cost function will be c(x)/x
Dividing the cost function through by x
Average cost function = c(x)/x = x³/x - 24x²/x + 30,000x/x
Average cost function = x²-24x + 30,000
A(x) = x²-24x + 30,000
If the average cost is minimized, hence dA/dx = 0
dA/dx = 2x - 24
0 = 2x - 24
-2x = -24
Divide both sides by -2
-2x/-2 = -24/-2
x = 12
For the second deriviative
d²A/dx² = 2 which is greater than zero
Hence a production level that will minimize the average cost per item of making x items is 12
The production level that will minimize the average cost per item of making x items is x = 12
How to obtain the minimum value of a function?To find the minimum of a continuous and twice differentiable function f(x), we can firstly differentiate it with respect to x and equating it to 0 will give us critical points.
Putting those values of x in the second rate of function, if results in negative output, then at that point, there is maxima. If the output is positive then its minima and if its 0, then we will have to find the third derivative (if it exists) and so on.
For this case, the function in consideration is: [tex]c(x) = x^3 - 24x^2 + 30000x[/tex]
This is cost function for x items' manufacturing.
The average cost per item would be c(x) / x
This gives us a function a(x) as:
[tex]a(x) = c(x)/x = x^2 -24x + 30000[/tex]
For finding the minimum of a(x), getting its first two derivatives as:
[tex]a'(x) = 2x - 24\\a''(x) = 2 > 0[/tex]
Equating first rate to 0,
[tex]a'(x) = 2x - 24 = 0[/tex] critical point.
Since second rate is positive, the point x = 12 is point of minima, and since only one critical point is there, it is the point on which a(x) is minimum.
Thus, the production level that will minimize the average cost per item of making x items is x = 12
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Emma bought a sweater at the sale price of $50. The original cost of the sweater was $80. What percent represents the discount that Emma received when buying the sweater?
Answer:
The percentage represented is 37.5%
In a first aid kit, the ratio of large bandages to small bandages is 1 to 6. Based on this ratio, how many small bandages are in a kit of 140 bandages?
What is the area of KDL to the nearest tenth of a square inch? Use special right triangles to help find the height. Show
your work
Answer:
8
Step-by-step explanation:
This is a 45-45 traingle which mean that the two sides that aren't the hyptonouse are equal (because their angles are equal)
We will let x equal the length of one of the sides
we have
x²+x²=(4√2)²
2x²=32
x²=16
x=4
this means that the length of the two missing sides are 4
Now using the area of a traingle formula we can solve for the area
A=.5*b*h
.5*4*4=8
.5*4*4
Can y’all solve it using geogebra something like that
The first 10 pounds is $2 per pound so $2 x 10 = $20
She wants to pick 40 pounds so after the first 10 pounds she needs 40-10 = 30 more pounds.
The cost for those are $1 per pound so 30 x $1 = $30
Total cost = $20 + $30 = $50 for 40 pounds.
Four students each wrote down a number between 30 and 40. The list shows the numbers they wrote.
Elly-35
Ulysses-39
Maggie-37
Palmer-33
Which student wrote down a prime number?
Answer:
Maggie.
Step-by-step explanation:
37 is the prime number.
Answer:
Maggie wrote down a prime number
A cylindrical cookie jar has a volume of 904.23 cubic inches. It is 8 inches tall. What is the radius of the cookie jar? Round your answer to the nearest inch.
Answer:
Answer:
r = 6 in
Step-by-step explanation:
The volume of a cylinder of radius r and height or length h is
V = πr²h.
Here, we need to solve for the radius; we get:
V
------------- = r²
πh
904.23 in³
This works out to r² = ----------------- = 35.97 in²
π(8 in)
Finally, take the square root of this result to find the radius, r:
r = √35.97 in² = 6 inches
HELP PLEASE 15 POINTS
Answer:
b
Step-by-step explanation:
Given that Δ DEF and Δ ACB are congruent then corresponding angles are congruent.
ACB and DEF , that is ∠ B and ∠ F are corresponding