Answer:
It will take 6 weeks
Step-by-step explanation:
Ms. Robinson: 75+15(6)=$160
Ms. LaSpina: 225-60 =$160
Therefore both will take 6 weeks
please help with question 5
HELP!! Choose the fraction pair that is equivalent.
A) 4/5 and 8/20
B) 3/4 and 4/3
C) 3/12 and 1/3
D) 8/24 and 1/3
Please help me on this question I really need help. :,)
Answer:
a. (7, 27) Polly was incorrect.
b. (3, 1) Polly was correct.
Step-by-step explanation:
a.
y = 4x - 1
2x - y = -13
We can solve this by substitution. Our first equation gives us y. Plug that into our second equation for each instance of y.
2x - y = -13
2x - (4x - 1) = -13
First distribute the negative sign across the parentheses.
2x - 4x + 1 = -13
Combine like terms.
-2x + 1 = -13
-2x = -14
Divide both sides by -2.
x = 7
Now that we know x, plug its value into one of our original equations.
y = 4x - 1
y = 4(7) - 1
Solve.
y = 28 - 1
y = 27
Our solution is (7, 27).
Let's check our answer by plugging both values into one of our original equations.
2x - y = -13
2(7) - 27 = -13
Solve.
14 - 27 = -13
-13 = -13
Your solution is correct.
Polly's solution was (-2, -9), which is incorrect.
b.
3x + 6y = 15
-2x + 3y = -3
Let's solve this by elimination. To solve by elimination means to eliminate a variable from the equation.
We have 3x & -2x and 6y & 3y. Notice that 6 and 3 can be simplified easily. To eliminate y, we want to multiply each factor of the second equation by -2.
-2x + 3y = -3
-2(-2x + 3y = -3)
4x - 6y = 6
Write the equations together.
3x + 6y = 15
4x - 6y = 6
Now we can see that the y variable will cancel out.
Apply the elimination method.
3x + 6y = 15
4x - 6y = 6
________
7x = 21
Divide both sides by 7.
x = 3
Now that we know x, plug its value into one of our original equations.
3x + 6y = 15
3(3) + 6y = 15
Solve.
9 + 6y = 15
6y = 15 - 9
6y = 6
y = 1
Our solution is (3, 1).
Let's check our answer by plugging both values into one of our original equations.
-2x + 3y = -3
-2(3) + 3(1) = -3
Solve.
-6 + 3 = -3
-3 = -3
Your solution is correct.
Polly's solution was (3, 1), so she was correct.
Hope this helps!
Please I really need help
Answer:
19/4 =12
Step-by-step explanation:
The 19/4 is a fraction, 19 being the top (numerator)
and 4 being the bottom (denominator)
Ron used 24 cubes to make this 3-step staircase. If he uses a total of 84 cubes to make a similar staircase, how many steps will the staircase have? Think of using objects to solve this problem
What is the quotient of the fractions below? 2/3 divided by 5/4
A. 5/6
B. 6/5
C. 15/8
D. 8/15
Hurryyy!!!
The quotient of the fractions 2/3 divided by 5/4 is 8/20
What is a fraction?A fraction can be simply described as the part of a whole variable, number or element.
There are several types of fractions in mathematics, which includes;
Complex fractionsImproper fractionsProper fractionsMixed fractionsSimple fractionsWhat is quotient?Quotient can simply be described as the product of division of two numbers or variables,
From the information given, we have;
2/3 ÷ 5/4
take the inverse of the divisor and multiply
2/3 × 4/5
Multiply the values
8/20
Hence, the value is 8/20
Learn more about fractions here:
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What is the simplified form of the following expression? 3sqrt 4x/5
solve with work please
Answer:
150 yd
Step-by-step explanation:
Since the line segment is an angle bisector then it divides the opposite side into segments that are proportional to the other 2 sides , that is
[tex]\frac{250}{375}[/tex] = [tex]\frac{x}{225}[/tex] ( x is the distance from the hole to the oak tree )
Cross- multiply
375x = 56250 ( divide both sides by 375 )
x = 150
The hole is 150 yards from the oak tree.
What data does the x-axis show?
25 points ***!!
Answer:
time in weeks
Step-by-step explanation:
find the slope
y= 1/3x + 18
Answer:
1/3
Step-by-step explanation:
y = mx + b
m is the slope and b is your y-intercept.
Answer:
m = 1/3
Step-by-step explanation:
can someone help me answer this.
Answer:
C) H
Step-by-step explanation:
It can only be a function when every y has a different x. There cannot be an x with multiple y’s
Does the following equation, y= -x2 -10x +1 have a maximum or
minimum. Explain
Answer:
Step-by-step explanation:
Your y= -x2 -10x +1 should be written as y = -x^2 -10x +1. This is a quadratic function. Because the coefficient (-1) of the x^2 term is negative, we know immediately that the graph (a parabola) opens down, and thus has a maximum.
Find the sum of the zeros in the following equation:
Y=(2x – 1) (x + 4) (2x– 3) (x– 1)
hiii please help i’ll give brainliest:)
Answer:
Geographic Features of Ancient Greece
Step-by-step explanation:
Greece has all these attributes on the list
Answer:
Geographic Features of Ancient Greece
Step-by-step explanation:
plzzzzzzzzzzzzzzzzzzzzzzzz give brain alist
what is 1 1/3 times 1 3/4 T-T
Answer:
The answer is: 7/3 or if ya want it simplified ( 2 1/3)
~ hope this helped, have a gr8 day/ night my friend!~
Step-by-step explanation:
Answer:
2 and 1/3
Step-by-step explanation:
HELP PLEASE!! Which option is correct?!
Answer:
Step-by-step explanation:
C
Answer:
im pretty sure it is D
Step-by-step explanation:
Name two pairs of complementary angles
Answer:
AFB + BAF and CED + CDE
Step-by-step explanation:
complementary angles are two angles that add up to 90°
62 and 28 add up to 90
50 and 40 add up to 90
He exponential model describes the population, A, of a country in millions, t years after 2003. Use the model to determine the population of the country in 2003. The population of the country in 2003 was nothing million.
Complete question :
The exponential model A=16.2e^0.01t describes the population, A, of a country in millions, t years after 2003. What was the population in 2003?
Answer:
16.2 million
Step-by-step explanation:
Given the equation :
A=16.2e^0.01^t
Where, t = number of years after 2003
The population in year 2003 ; can be obtained thus ;
t = 2003 - 2003 = 0
Put t = 0 in the equation :
A(0) =16.2e^0.01^0
A(0) = 16.2 * 1
A(0) = 16.2
Hence, population in 2003 is 16.2 million
I need help please :)
Given that x = 5.7 m and θ = 43°, work out BC rounded to 3 SF
Answer:
BC ≈ 4.17
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos43° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{BC}{5.7}[/tex] ( multiply both sides by 5.7 )
5.7 × cos43° = BC , then
BC ≈ 4.17 ( to 3 sf )
Solve
A. n = 12
B. n = -12
C. n = -3
D. n = 3
Answer:
n/3+2 =-2
n+6=-6
n=-12 is your answer
Answer:
B
Step-by-step explanation:
Given
[tex]\frac{n}{3}[/tex] + 2 = - 2 ( subtract 2 from both sides )
[tex]\frac{n}{3}[/tex] = - 4 ( multiply both sides by 3 to clear the fraction )
n = - 12 → B
which number is equivalent to
6^2×6^3
A. 150
B. 623
C. 327
D. 252
Answer:
150
Step-by-step explanation:
3x^5 + 2x^2 What is the degree of this polynomial?
A. 1
B. 3
C. 5
D. 6
option ( C )
5
...........
Answer:
C. 5
Step-by-step explanation:
The degree is the highest exponent in the polynomial and in the polynomial given, 3x^5 has the highest exponent, being 5, so that would be the degree.
Hope this helps :)
Find the circumference and area of each circle. PLEASE HELP!
Answer:
There are so many!
For circumference use = 2 pi r
For area use = pi r²
I have told only formula, else you may lack practice. try to solve yourself
Which piecewise function is shown on the graph?
Answer:
Option A
Step-by-step explanation:
Just substitute each value of x in the graph to find the correct function.
When be graph the functions given, we find that option A is correct.
What is meant by to graph a function?To graph a function, you have to select x-values and plug them into the equation. Once you plug those values into the equation, you will get a y-value. Your x-values and your y-values make up your coordinates for a single point. Keep plugging in x-values to get coordinates to plot more points on the graph, and then you will see your graphed function once the dots are connected.
Using the graph,
For x < = -2, y = 5.
For -2 < x < 1, the function is a polynomial.
We have two options, either [tex]y = x^{2} -5\ or\ y = x^{2} +5[/tex]
The polynomial must have the point (0,-5) on it.
For [tex]y = x^{2} -5[/tex] , when x = 0, y = -5.
Hence, it is the correct option.
For x >= 1,
Using graph, we see that when y = 0, x lies between 3 and 4.
For equation, [tex]y = 2^{(x-2)} - 2\\[/tex], when y = 0, x = 3, so it is not correct.
For equation, [tex]y = 2^{(x-2)} - 3\\[/tex], when y = 0, x = 3.584, hence it is correct.
Learn more about graphing a function here
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If tara invites 6 friends. And each friend should get 5 cookies but there are 12 cookies how many more cookies does tara need.
Answer:
18
Step-by-step explanation:
6 friends times 5 cookies is 30 cookies in total
30 cookies minus 12 cookies already made is 18!
Answer: 18 cookies
Step-by-step explanation:
Tara invites 6 friends, each friend gets 5 cookies.
So, 6 x 5 to find how many cookies are for 6 friends.
6 x 5
= 30 cookies
Tara only has 12 cookies. How much more does she need?
Everyone should get 30 cookies, but there is only 12.
Subtract to find the difference!
30-12=18
Solve 7y^2+ 21 = 77, where Y is a real number. Round your answer to the nearest hundredth.
The quotient property of radicals requires the indices of the radicals to be the same. Does this mean that it is not possible to write 4Vy^3/Vy as a single radical? Explain.
Answer:
The radicals are the power of the same base so they can be written using rational exponents. Simplified the quotient of the exponential expression by getting a common denominator and subtracting exponents. The simplified expression is the 4th root of y
Step-by-step explanation:
Answer:
Step-by-step explanation:
The radicals are the power of the same base so they can be written using rational exponents. Simplified the quotient of the exponential expression by getting a common denominator and subtracting exponents. The simplified expression is the 4th root of y,
Giving brainlist to whoever answers
Answer:
420
Step-by-step explanation:
volume = length x width x height
12 x 5 x 7 = 420
PLEASE HELP!!!!!!!!!!!!!!!!!!!!
Answer:
g(x) = -x²
Step-by-step explanation:
By looking at the graph and equation of the blue quadratic line, you know the y-intercept is 4. When you look at the red one you can see the y-intercept is 0 so then the equation should be g(x) = -x²
Answer:
Answer B
Step-by-step explanation:
If both the function have the same shape, it means that the function f(x) is just shifted downwards to obtain function g(x).
The function f(x) is given as,
[tex]f(x) = 4 - x^{2}[/tex]
Shifting the curve downwards by 4 unites, the function g(x) is obtained,
[tex]g(x) = f(x) - 4\\g(x) = 4 -x^{2} - 4\\g(x) = -x^{2}[/tex]
I think option B is the correct choice.