Answer:
we will have to multiply the second equation by 3 to eliminate the y variable by adding.
Step-by-step explanation:
Given the equations
4x – 3y = 6 → (1)
6x + 2y = 10 → (2)
As the first equation is multiplied by 2,
2(4x – 3y) = (2)6
8x - 6y = 12 → (3)
As we have to eliminate y,
so multiply the second equation by 3,
6x + 2y = 10
3(6x + 2y) = 3(10)
18x + 6y = 30 → (4)
So now adding the new equations (3) and (4) will eliminate the y variable by adding
8x - 6y = 12
18x + 6y = 30
--------------------
26x + 0y = 42
26x = 42
x = 42/26
x = 21/13
Therefore, we will have to multiply the second equation by 3 to eliminate the y variable by adding.
If 3x - 9y = 21 and 6x + 3y = 21, which of these could be a value of x or y? Select all that apply.
Answer:
x = 4
y = -1
Step-by-step explanation:
3x-9y = 21
6x+3y =21
-2* (3x-9y) = -2*(21)
6x+3y = 21
-6x+18y = -42
6x+ 3y = 21
-6x+6x+18y+3y = -21
21y = -21
y --21/21
y = -1
3x-9y =21
3x - 9*(-1) = 21
3x + 9 =21
3x = 21-9
3x = 12
x = 12/3
x = 4
Amanda is spreading new grass seed on her yard. The area of her yard is 4,995 square feet. The instructions on the bags of grass seed say that one bag of seed should be used for every 100 square yards. How many bags of grass seed should Amanda use?
Answer:
499500
Step-by-step explanation:
Hope this helps. :)
Answer:
Calculate Grass Seed Quantity
From the table above, Sun & Shade Mix requires 6 lbs. of seed per thousand sq. ft. for a new planting.
Step-by-step explanation:
Write an equation of the line in slope-intercept form.
y=
What is the constant of variation for a function that is a direct variation and whose graph passes through the point (5,82)?
Answer:
For a direct variation equation passing through
(
x
,
y
)
=
(
5
,
−
6
)
we have
−
6
=
m
⋅
(
5
)
→
m
=
−
6
5
and the direct variation equation is
y
=
(
−
6
5
)
x
which you might re-write as
5
y
=
−
6
x
The constant of variation for a function that is a direct variation and whose graph passes through the point (5,82) is 16.4
For a graph with x and y-axis, we can say that y is directly proportional to "x" since it is a direct variation.
If y is directly proportional to x, this is expressed as:
y = kx
k is the required constant of variation.
Since the graph passes through the point (5,82), this shows that x = 5 and y = 82
Substituting into the formula:
82 = 5k
k = 82/5
k = 16.4
Hence the constant of variation for a function that is a direct variation and whose graph passes through the point (5,82) is 16.4
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Evaluate the function y = 20 + 5m when m = 13.
Your answer is:
y = 85
Hope this helped! -Perplxxd
Can someone please explain how to do this problem for me?
Three people eat 2 pizzas altogether. Both pizzas are the same size. One person eats 2/3 of a pizza. A second person eats 1/2 of a pizza. How much pizza does the third person eat?
Answer:
i think it would be the whole pizza i think that is correct
Step-by-step explanation:
Answer: the third person did not eat anything.
Step-by-step explanation: because there would be no more pizzas left
which steps show how to use the distributive property to evaluate. 7•32
Answer:
7(32)=7(30+2)=7*2=210+14=224
Step-by-step explanation:
nd the star is the multiplacations sign bcz i dont have the dot mk.
The Jones family spends $600 per month on groceries for their family. If this is 15% of their monthly budget, then what is their monthly budget?
Answer:
hi whats up
Step-by-step explanation:
Answer:
$4000
Step-by-step explanation:
$600 = .15x where x is the total monthly budget
x = $600/.15
x = $4000
The last option is :
The slope is 4, and the y-intercept is 12.
Answer:
the last option
Step-by-step explanation:
slope: 4/1
y-intercept: 12
hopefully this helps :)
Use the data in the table. Which equation shows the number of trees planted per week.
A: y= 13x
B: y= 65x
C: y= 130x
D:y= 325x
Answer:
the picture is blocked but i say b
Step-by-step explanation:
2. Which coordinate is not on the graph of the equation t = 3
A (-5, -25)
B. (2, -19)
C. (3, -11)
D. (6,-3)
Answer:
Definir : que son las lineas imaginarias? ¿Que me permiten realizar?
Step-by-step explanation:
perdonon
What is the coefficient on x in the product of (3x+2)(x+4)?
Answer:
3
Step-by-step explanation:
Answer: i guess 3
Step-by-step explanation:
An SUV costs $26,425 and costs an average of $0.18 per mile to maintain. A hybrid model of the SUV costs $33,195 and costs an average of $0.13 per mile to maintain. After how many miles will the cost of the gas-only SUV exceed the cost of the hybrid?
Answer:
135,400 miles
Step-by-step explanation:
SUV cost = $26,425 + $0.18m
= 26,425 + 0.18m
Hybrid SUV cost = $33,195 + $0.13m
= 33,195 + 0.13m
Where,
m = number of miles
Equate the cost of the two SUVs
33,195 + 0.13m = 26,425 + 0.18m
33,195 - 26,425 = 0.18m - 0.13m
6,770 = 0.05m
divide both sides by 0.05
m = 6,770 / 0.05
= 135,400
m = 135,400 miles
The gas-only SUV exceed the cost of the hybrid after 135,400 miles
The domain of a function is given by {-4,2,8}. If the function is defined by y= x +1 /3 ,then which of the following values is a member of the range?
Answer:
{-1, 1, 3}
Step-by-step explanation:
Given the function
y = (x + 1)/3
The domain are the input value x while the range are the output values given the input value x;
Given the domain {-4, 2, 8}
when x = -4;
y = (-4+1)/3
y = -3/3
y = -1
when x = 2;
y = (2+1)/3
y = 3/3
y = 1
when x = 8;
y = (8+1)/3
y = 9/3
y = 3
Hence the member of the range are {-1, 1, 3}
What is the slope of this line select 1 answer
Answer:
Undefined
General Formulas and Concepts:
Algebra I
Vertical Line Test - Shows if a graph is a functionStep-by-step explanation:
We see from the graph that we have a vertical line. Any vertical line will have an undefined slope.
Please help 20 POINTS
Answer:
LGK=90
Step-by-step explanation:
BRAINLIEST
please help will mark brainlyist if right
A sandwich shop serves 4 ounces of meat and 3 ounces of cheese on each sandwich. After making sandwiches for an hour, the shop owner has used 91 combined ounces of meat and cheese. How many combined ounces of meat and cheese are used on each sandwich?
Answer:
Step-by-step explanation:
Given : For each sandwich:
Quantity of meat used = 4 ounces
Quantity of cheese used = 3 ounces
The combined ounces of meat and cheese are used on each sandwich =
Quantity of meat used + Quantity of cheese used
= 4 ounces + 3 ounces
= 7 ounces
Hence, The combined ounces of meat and cheese are used on each sandwich = 7 ounces
What’s your philosophy in life?
Answer:
The philosophy of life would include things like how you decide what is “good” and “bad”, what “success” means, what your “purpose” in life is (including if you don't think there is a purpose), whether there is a God, how we should treat each other, etc
Step-by-step explanation:
If the measure of <5 = 102° then the measure of <8 = what
Answer: 163.2°
Step-by-step explanation:
School supplies cost $27 but after tax the total was $29.96 what is the percentage of tax payed?
Answer:
Step-by-step explanation:
50 sum i think
Simplify.
24x2/
23x6
Answer:
16/23
Step-by-step explanation:
well,
24 x 4 = 96
23 x 6 = 138
96/138 = 16/23
24×2/23×6
48/138
=0.3380
I’m thinking it’s 3-3=0 but that will leave me to no answer help me pls
Answer:
2 1/4
Step-by-step explanation:
Leah is creating satin bows for a wedding. From a 15-meter-long ribbon, she first cuts a piece meters long. Then she cuts a piece meters long from the remaining ribbon. How much ribbon does Leah have left? A. 10 meters B. 25 meters C. 5 meters D. 12 meters
This question is incomplete
Complete Question
Leah is creating satin bows for a wedding. From a 15-meter-long ribbon, she first cuts a piece 3 4/9 meters long. Then she cuts a piece 6 5/9 meters long from the remaining ribbon. How much ribbon does Leah have left?
A.) -12 meters
B.) -5 meters
C.) 5 meters
D.) 12 meters
Answer:
C.) 5 meters
Step-by-step explanation:
From a 15-meter-long ribbon, she first cuts a piece 3 4/9 meters long. Then she cuts a piece 6 5/9 meters long from the remaining ribbon.
Step 1
3 4/9 meters + 6 5/9 meters
Least Common Denominator = 9
(3+ 6) + [ 4/9 + 5/9)
9 + [4 + 5/9]
9 + [9/9]
9 + 1
= 10 meters
This means, the total number of ribbons cut is 10 meters
The amount of ribbon Leah has left =
Initial length of ribbon - Amount of ribbon cut
= 15 meters - 10 meters
= 5 meters
Hence, Leah has 5 meters long of ribbon left
Answer:
the answer is 5 meters left
Step-by-step explanation:
Are the expressions 8a2 - 4b + 7a2 and 5(3a2 - 2b) + 6b equivalent? Explain your reasoning.
Answer:
Yes, The expressions 8a² - 4b + 7a² and 5(3a² - 2b) + 6b are equivalent
Step-by-step explanation:
To answer the question you must simplify each expression, then compare them to find if they are equivalent or not
∵ The 1st expression = 8a² - 4b + 7a²
→ Add the like terms
∴ The 1st expression = (8a² + 7a²) - 4b
∴ The 1st expression = 15a² - 4b
∵ The 2nd expression = 5(3a² - 2b) + 6b
→ Multiply the bracket by 5
∴ The 2nd expression = 5(3a²) - 5(2b) + 6b
∴ The 2nd expression = 15a² - 10b + 6b
→ Add the like terms
∵ The 2nd expression = 15a² + (-10b + 6b)
∴ The 2nd expression = 15a² + -4b
→ Remember (+)(-) = (-)
∴ The 2nd expression = 15a² - 4b
∵ The 1st expression = The 2nd expression
∴ The two expressions are equivalent
∴ The expressions 8a² - 4b + 7a² and 5(3a² - 2b) + 6b are equivalent
A large box is packed with 6 rows of 8 boxes of dried cranberries in the bottom layer. The box is about 4 layers high. Estimate the volume of the large box if each box of dried cranberries has a volume of 16 cubic inches.
Answer:
Step-by-step explanation:
The estemit will be 0
Increase £2193.67 by 18.5% Give your answer rounded to 2 DP.
There was 4/5 of a cake sitting on the counter. Daryl ate 1/3 of the left over cake. How much cake was left over after he ate? *
Answer:
[tex]\bold{\dfrac8{15}}[/tex] of the cakeStep-by-step explanation:
[tex]\dfrac45-\dfrac13\cdot\dfrac45=\dfrac{4\cdot3}{5\cdot3}-\dfrac4{15}=\dfrac{12}{15}-\dfrac4{15}=\dfrac8{15}[/tex]
Mackenzie works as a salesperson at an electronics store and sells phones and phone accessories. Mackenzie earns a $10 commission for every phone she sells and a $4 commission for every accessory she sells. On a given day, Mackenzie made a total of $126 in commission and sold 7 more accessories than phones. Write a system of equations that could be used to determine the number of phones sold and the number of accessories sold. Define the variables that you use to write the system.
Answer:
Let p= the number of phones sold
Let a= the number of accessories sold
Step-by-step explanation:
10p+4a=126
a=p+7
The system of equation should be 10p+4a=126 and a=p+7
Given that,
Mackenzie earns a $10 commission for every phone she sells and a $4 commission for every accessory she sells. On a given day, Mackenzie made a total of $126 in commission and sold 7 more accessories than phones.Based on the above information, the equation is as follows:
Here we assume p= the number of phones sold
And, a= the number of accessories sold
So, the equations are 10p+4a=126 and a=p+7
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-3/4 - 1/4 to tired and I'm struggling with this
Answer:
-1
Step-by-step explanation:
[tex] \rm Simplify \: the \: following: \\ \rm \longrightarrow - \dfrac{3}{4} - \dfrac{1}{4} \\ \\ \rm - \dfrac{3}{4} - \dfrac{1}{4} = \dfrac{ - 3 - 1}{4} : \\ \rm \longrightarrow \dfrac{ - 3 - 1}{4} \\ \\ \rm - 3 - 1 = - (3 + 1) : \\ \rm \longrightarrow \dfrac{ - (3 + 1)}{4} \\ \\ \rm 3 + 1 = 4 : \\ \rm \longrightarrow \dfrac{ - 4}{4} \\ \\ \rm \dfrac{ - 4}{4} = \dfrac{4}{4} \times ( - 1) = - 1 : \\ \rm \longrightarrow - 1[/tex]