Answer:
1 cookie = $1.25 1 cake = $15
Step-by-step explanation:
set up a system of equations:
let x = 1 cookie
let y = 1 cake
3x + 5y = 78.75
8x + 2y = 40
I multiplied the first equation by 2 to get: 6x + 10y = 157.50
I multiplied the second equation by -5 to get: -40x - 10y = -200.00
If you add both equations, the y-terms will be eliminated
-34x = -42.50
x = 1.25
Plug in 1.25 into equation to find value of y: 8(1.25) + 2y = 40
10 + 2y = 40
2y = 30
y = 15
How do I solve 1.5 to the -2 power or 1.5^-2
Answer: -3
Step-by-step explanation: hope this help
can someone help or give me the answer?
Answer:
(5,2), (9.5,70)Step-by-step explanation:
find the l.c.m of x²+x, x²-1, x²-x
Answer:
X³-x
Step-by-step explanation:
Lcm
x(x-1)(x+1)
x(x²-1)
x³-x
A certain solution of salt water is 10% salt and weighs 50 pounds., More salt must be added to produce a solution that ls
25% salt.
If x represents the pounds of salt to be added, which of the following expressions represents the number of pounds of
salt in the 25% solution?
what are do you want from me i don't even know my bad
5x+2y=10 2x+y=2
To whoever answers this you're a genius :)
Step-by-step explanation:
5x + 2y = 10
2x + y = 2, 4x + 2y = 4.
Therefore (5x + 2y) - (4x + 2y) = 10 - 4, x = 6.
=> 2(6) + y = 2, y = -10.
The solutions are x = 6 and y = -10.
find the value of x, pls show work so i know how to solve it :)))
Answer:
x=71
Step-by-step explanation:
(Base angle of an isosceles triangle)
Answer:
x = 71°
Step-by-step explanation:
Since the 2 legs are congruent then the triangle is isosceles and the 2 base angles are congruent, that is
x = 71°
Which of the following inequalities is equivalent to -6 > x?
A. x -6
D. x ≤ -6
Answer:
I think d
Step-by-step explanation:
Answer:
- At least <turn the other way. I think it should be d
Would you multiply M by the third equation (6x^5.....) since it is subtraction
Answer:
B
Step-by-step explanation:
Here, we want to get the value of m
The value of m can be obtained by multiplying the first factors of the first two polynomial, subtracting the first factor of the third and equating to 18
So what we have will be;
m * 6 - 6 = 18
6m -6 = 18
6m = 18 + 6
6m = 24
m = 24/6
m = 4
intersecting lines proof easy(15 points ) halfway done
Answer:
See below
Step-by-step explanation:
Statement | Reason
1. ∠1 ≅ ∠11 | 1. Given
2. ∠1 ≅ ∠9 | 2. Corresponding angles theorem
3. ∠11 ≅ ∠9 | 3. Transitive property of equality
4. a║b | 4. Corresponding angles converse
Jordan has twenty times as many baseball cards as his brother. His brother has 9 cards. How many cards does Jordan have
Answer:
180
Step-by-step explanation:
Answer:
180
Step-by-step explanation:
Because 20x9=180
Please MARK BRAINLEST!!
There are 150 children at summer camp. Using the table below, what is the percentage, to the nearest whole percent, of children that did not sign up for canoeing?
Answer:
I would say around 41.3% I'm sorry if I am wrong :/
Step-by-step explanation:
62/150 around 0.413
Help me with problem 2 please
Answer:
Second choice, 11/30
Step-by-step explanation:
38 + 22 = 60
He flipped tails 22 times out of 60 tries, so it's 22/60
Simplify with 2 and it's 11/30
please someone help i can’t do math it runs in the family math is HARD!!!!!
Answer:
the 6 x 5squared(with the little two on the top)
:)
Answer:
6 * 5^2 ..... 6 * 5* 5 ........ 150
Step-by-step explanation:
going left to right the top row its the 2 and 4 and the bottom row is the middle one
4) Write the quadratic equation of the following in vertex form: vertex (-1,3) and passes through (1,-5)
I
ULTS
Factor completely
5) 15m2 - 6
6) 2x2 + 5x - 10% - 25
Answer:
Please check the explanation.
Step-by-step explanation:
4)
If an equation representing a parabola is in vertex form such as
[tex]y\:=a\left(x-k\right)^2+h[/tex]
then its vertex will be at (k, h).
Therefore the equation for a parabola with a vertex at (-1, 3), will have the general form
[tex]y\:=a\left(x+1\right)^2+3[/tex]
If this parabola also passes through the point (1, -5) then we can determine the 'a ' parameter.
[tex]-5\:=a\left(1+1\right)^2+3[/tex]
simplifying the equation
[tex]2^2a+3=-5[/tex]
[tex]4a+3=-5[/tex]
subtract 3 from both sides
[tex]4a+3-3=-5-3[/tex]
[tex]4a=-8[/tex]
Divide both sides by 4
[tex]\frac{4a}{4}=\frac{-8}{4}[/tex]
[tex]a=-2[/tex]
So our equation in vertex form is:
[tex]y\:=-2\left(x+1\right)^2+3[/tex]
5)
Given the expression
[tex]15n^2-6n[/tex]
[tex]\mathrm{Apply\:exponent\:rule}:\quad \:a^{b+c}=a^ba^c[/tex]
[tex]=15nn-6n[/tex]
[tex]\mathrm{Rewrite\:}6\mathrm{\:as\:}3\cdot \:2[/tex]
[tex]\mathrm{Rewrite\:}15\mathrm{\:as\:}3\cdot \:5[/tex]
[tex]=3\cdot \:5nn-3\cdot \:2n[/tex]
Factor out the common term 3n
[tex]=3n\left(5n-2\right)[/tex]
6)
Given the expression
[tex]2x^2+5x-10x-25[/tex]
Factor 2x²+5x: x(2x+5)
Factor -10x-25: -5(2x+5)
so the expression becomes
[tex]=x\left(2x+5\right)-5\left(2x+5\right)[/tex]
[tex]\mathrm{Factor\:out\:common\:term\:}\left(5+2x\right)[/tex]
if 12 litres of oil cost rs 4,800 .how much will 20 litres of oil cost
Step-by-step explanation:
here
cost of 12 liters oil = RS 4800
cost of 1liter oil =rs 4800 ÷ 12 = 400
now
cost of 20 liters will be 400×20=8000
The difference between Cassandra's age and Borg's age is 3 years. The sum of 8 times Cassandra's age and twice Borg's age is 94 years. How old is each
Answer:
Cassandra 10, Borg 7
Step-by-step explanation:
Let c be Casandra's age and b be Borg's age. We can set the equation c-b=3. We can also set the equation 8c+2b=94. From the first equation we get c=b+3. Substitute this for c to get 8(b+3)+2b=94. Simplify to get 10b+24=94. Subtract then divide to get Borg's age is 7. Then since Cassandra is 3 yrs older than Borg, Cassandra's age is 10
please help asap !!!!
Answer:
41.5
Step-by-step explanation
The equation is
X×65/100=27
x=27×100/65
x=27×20/13
x=540/13
x=41.5
How do you solve g(4)=
Answer:
From the given graph, it is clear that at x = 4, the corresponding y-value of the graph is y = 1
Therefore, we conclude that:
g(4) = 1Step-by-step explanation:
Given:
A graph is given
To determine:
g(4) = ?
In other words, from the given graph, we need to determine the value of y at x=4
Finding g(4)
From the given graph, it is clear that at x = 4, the corresponding y-value of the graph is y = 1
i.e at x = 4, y = 1Therefore, we conclude that:
g(4) = 1The temperature on the moon can vary from -172°C to -126°C. Find the difference between the maximum and minimum temperature.
I really need step by step explaining please!! :D
Answer:
The range is 46
Step-by-step explanation:
-172 is the minimum
-126 is the maximum
subtract -126 by -172 and you get 46
A tile factory earns money by charging a flat fee for delivery and a sales price of $0.25 per tile. One customer paid a total of $3,000 for 10,000 tiles. The equation y – 3,000 = 0.25(x – 10,000) models the revenue of the tile factory, where x is the number of tiles and y is the total cost to the customer.
Which function describes the revenue of the tile factory in terms of tiles sold?
What is the flat fee for delivery?
$
Answer:
1. f(x)=0.25x+500
2.500
Step-by-step explanation:
well, it was right, and to be honest I don't know how I got it right cause I guessed
Verify that f has an inverse. Then use function f and the given real number a to find (f-1)'(a).
Answer:
6.
Step-by-step explanation:
f(x) = √(x - 4) x > 4
y = √((x - 4)
Square both sides
y^2 = x - 4
x = y^2 - 4
So the inverse:
f-1(x) = x^2 + 4
f(-1)'(x) = 2x
When x = 3
f(-1)'(3) = 2(3) = 6.
Divide. Give the quotient and remainder.
4391/53
Answer:
82 R?
Step-by-step explanation:
Help. Find the sum of
-7x^2-6x+9 and -3x^2-x+7
Step-by-step explanation:
by summing them two
-9x^2 -7x + 16
A shipping box, in the
shape of a cube, has a volume of 2,300
cubic inches. Estimate the length of the side
of the shipping box to the nearest Integer
Answer:
13 inches
Step-by-step explanation:
length of side of cube: x
volume of cube = x³ = 2300
x = ∛2300 = 13.2
Find the value of x that solves the system shown below.
y = 5x
2x - y = 18
The solution to the system is x = -6, y = -30.
What is an equation?An equation contains one or more terms with variables connected by an equal sign.
Example:
2x + 4y = 9 is an equation.
2x = 8 is an equation.
We have,
We can start by substituting the first equation into the second equation, to eliminate y:
2x - y = 18
2x - 5x = 18 (substituting y = 5x)
-3x = 18
x = -6
Now that we know x = -6, we can use the first equation to find y:
y = 5x
y = 5(-6)
y = -30
Therefore,
The solution to the system is x = -6, y = -30.
Learn more about equations here:
https://brainly.com/question/17194269
#SPJ2
plzzzzzzzzzzzzzzzzzzzzzzzzz
Answer:
4x⁵ z⁸
Step-by-step explanation:
hope it helps!
.......
Answer:
4 x^5 z^8
Step-by-step explanation:
To make it easy I am categorizing this in two groups. One is (xz^3), late us name it A and the other is after the multiplication sign that is (4x^4z^5) which we are naming B. Now 4 from b multiplies 1 from a(as there is no number which means there must be 1). In multiplication of power of bases we have to add the powers which means x from a × x^4 from b= x from a's power 1 + x from b's power 4=x^5 and repeating same process in case of z resulting in z^5.
Hence the above mentioned ans comes...
Hope this helps you
Which table represents a nonlinear function?
Answer:
Choice C
Step-by-step explanation:
The only one that isn't a linear function is table C. If we take a look at table D (because it's easier and without any negatives) the x values decreases by two every time and the y values increase by 4 every time. Then when we look at table C, the x value increase by 5 which is good. But the y value increases by 2 then 4 then 8, which is why this table isn't a linear function.
The only one that is a nonlinear function is table Choice C.
What is linear function?In mathematics, linear refer to a proportional behaviour that can be modelled with a line, the functions that model this behaviour are called linear functions, and their graphs are lines.
Now, linear expression refers to an expression which has variables with an exponent equal to one.
But Nonlinear functions have a slope that varies between points.
If we take a look at table D because it's easier and without any negatives then we can see that the x values decreases by two every time and the y values increase by 4 every time.
Thus when we look at table C, the x value increase by 5 which is good. But the y value increases by 2 then 4 then 8, which is not a linear function.
Learn more about the function:
brainly.com/question/2264373
#SPJ2
A ramp has a height of 5.8 feet and an angle of 80°.
What is the length of the ramp, y to the nearest tenth of a foot?
Answer:
y ≈ 33.4 ft
General Formulas and Concepts:
Pre-Algebra
Equality PropertiesTrigonometry
[Right Triangles Only] cos∅ = adjacent over hypotenuseStep-by-step explanation:
Step 1: Define
We are given a right triangle. We can use trig to find the missing length.
Step 2: Identify Variables
POV from angle measure
Angle = 80°
Adjacent = 5.8
Hypotenuse = y
Step 3: Solve for y
Substitute [cosine]: cos80° = 5.8/yMultiply y on both sides: ycos80° = 5.8Isolate y: y = 5.8/cos80°Evaluate: y = 33.4009Round: y ≈ 33.4 ftDoes this represent a function? Yes or no and explain why. (Please fast! im being timed(
Answer:
Hello
No function.There are two 7's on the x-axis. There can be 2 or more same numbers on the y-axis.
Step-by-step explanation:
Answer is No.
what is 102945766 +1649563419814