Farmer Phil needs to treat a field with potash and nitrogen. He knows he needs 308 pounds of potash and 330 pounds of nitrogen. He can use Grow Rite brand and Great Green Brand. Grow Rite has 4 pounds of potash and 5 pounds of nitrogen per bag. Great Green has 7 pounds of potash and 6 pounds of nitrogen per bag.
Answer:
The number of bags of Grow Rite brand = x = 42 bags
The number of bags of Great Green brand = y = 20 bags.
Step-by-step explanation:
The number of bags of Grow Rite brand = x
The number of bags of Great Green brand = y
The equation is given as:
4x + 7y = 308....... Equation 1
5x + 6y = 330....... Equation 2
Using Elimination method.
Multiply Equation 2 by the coefficient of x in Equation 1 and Multiply Equation 1 by the coefficient of x in Equation 2
4x + 7y = 308....... Equation 1 × 5
5x + 6y = 330....... Equation 2 × 4
20x + 35y = 1540..... Equation 3
20x + 24y = 1320....... Equation 4
Subtract Equation 3 from Equation 4
11y = 220
y = 220/11
y = 20 bags
4x + 7y = 308....... Equation 1
4x + 7(20) = 308
4x + 140 = 308
4x = 308 - 140
4x = 168
x = 168/4
x = 42 bags
The number of bags of Grow Rite brand = x = 42 bags
The number of bags of Great Green brand = y = 20 bags.
Please please please help me I'm really confused and I don't understand it
Jennifer is mixing orange concentrate and water to make orange
juice. The amount of orange concentrate is proportional to the
amount of water. Jennifer adds 12 cup of orange juice for every 3
cups of water. What is the constant of proportionality or the
relationship between cups of orange concentrate and cups of water?
Helpppp!! I don't understand this??????
At seven different restaurants, Rachel found that house salads cost an average of $3.80. If six of the restaurants priced house salads at $3.00, $3.45, $4.15, $4.60, $4.65, and $2.80, how much did a house salad cost at the other???????
Answer:
$3.77
Step-by-step explanation:
First, add all of the numbers together:
$3.00+$3.45+$4.15+$4.60+$4.65+$2.80=22.65
Next, divide that number by the number of numbers:
22.65/6=3.77
<3
when x=-4, what is the value of g(x)
Answer:
just fill in -4 for x so it would be g(-4)
Step-by-step explanation:
Happy Halloween
A rectangle has length 8*10^4 mm and width 4*10^4 mm. The rectangle's length is how many times its width?
Answer:2
Step-by-step explanation:
The ratio of rectangle length to width is 2 thus the length is 2 times the width.
What is the arithmetic operator?Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,
Division = eg 2/3
Multiplication = eg 2 × 4
As per the given question,
Length of rectangle = 8 × 10⁴ mm.
Width of rectangle = 4× 10⁴ mm
The ratio of length to width
Length/width = (8× 10⁴)/(4× 10⁴)
Length/width = 2
Length = 2 × width
Hence "The ratio of rectangle length to width is 2 thus the length is 2 times the width".
To learn more about the arithmetic operators,
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What is the equation of the line that passes through the point (-4,-2) and has a slope of -1/2
Answer: y=-1/2x-4
Step-by-step explanation:
If you use point slope formula you get
y+2=-1/2(x+4)
simplify that in y=mx+b and you get
y=-1/2x-4
There were 54 students in the school choir for a concert the music teacher arranged the students in six rows with the same number of students in each row the choir saying seven songs at the concert which of these shows how many students were in each row math question
Answer:
9 students in each row
Step-by-step explanation:
Given : 54 students, arranged in 6 rows (with equal students), singing 7 songs.
No of students in one row x No of rows = Total students
So, No of students in one row = Total students / No of rows
No of students in each row = 54 / 6 = 9
Evaluate the expression for x = 2, y = -3, and z = -5. *
2x + 3y + z
Your answer
Answer:
-10
Step-by-step explanation:
replace each letter with each number given, like shown below.
2(2)+3(-3)+(-5)
= 4+-9+-5
= -5+-5
= -10
Out of the 60 students on a school trip, 70 percent brought there lunch, and the rest brought money to buy lunch. How many students were buying lunch
Answer:
18 were buying lunch:)
Answer: 42/This should be the right answer since 42 should be 70 percent of 60.
1.) Solve for c:
4c + 5 > -c-5
Answer:
Step-by-step explanation:
What are the similarities and differences between translations, reflections, and rotations?
What is 6 1/4 divide by 2
Answer:
3.125
Step-by-step explanation:
Answer:
3 1/8 or 3.125
Step-by-step explanation:
6 1/4
6/2 = 3
(1/4)/2 = 1/8 The denominator doubles to cut the value in half
15 blank CDs for $5; 45 blank CDs for $15
Answer:
3 cds for 1 dollar
Step-by-step explanation:
Answer:
for every 15 blank cds they cost 5 dollars
Step-by-step explanation:
The fundamental theorem of algebra tells us how many zeros (including complex zeros) a polynomial function has.
True or False?
Answer:
IT´S TRUE!!!
Step-by-step explanation:
simplify the fraction 15/45
Answer:
1/3 or .3333333.....
Step-by-step explanation:
Answer:
1/3
Step-by-step explanation:
you can divide both the numerator and the denominator by 5
15/5=3
45/5=9
then divide by 3 to both sides
hope this helps :3
if it did pls mark brainliest
Anybody want free brainliest and 15 points? Just answer this question for me pls
Answer:
n= -16 :))
Step-by-step explanation:
Answer:
-16
Step-by-step explanation:
confusing
oof sorry if this is wrong
hope it helps tho
Help plz I need help bad
Step-by-step explanation:
blur po yung pictures. ulitin mo nalang
Answer:
b
Step-by-step explanation:
it is the only one that makes sense
What is the solution to the inequality below?
−x + 5< 20
Answer:
x>−15
Step-by-step explanation:
−x+5<20
Step 1: Subtract 5 from both sides.
−x+5−5<20−5
−x<15
Step 2: Divide both sides by -1.
−x
−1
<
15
−1
x>−15
Answer:
x>−15
Answer:
x>-15 would be the answer!
Step-by-step explanation:
In the equality −x + 5< 20, you want x to be by its self. First of all, you'll subtract 5 on both sides so now you will have -x<15. Now, you must get rid of the negative so divide -1 to both sides. Oh, looks like you will have to flip the symbol since you're dividing a negative. In the end, you'll have an answer of x>-15.
Answer the following questions based on this word problem:
The Beck family is planning on renting a car for their vacation. The two rental car companies have
different pricing plans.
Company A is $0.10 per mile and $25 a day.
Company B is $0.05 per mile and $40 a day.
Let x represent the number of miles and y represents the cost. They are only renting the van for 1 day.
Answer:
Step-by-step explanation:
A: $0.1(x) + 25(y) = x + 25
B: $0.05(x) + $40(y) = x + 40
Because they didn't give a certain amount of miles traveled, we have to go with we do know.
**this is probably wrong.
Write an inequality to determine when Apartment A will cost more than Aparment B: Johnny is searching for an apartment and has narrowed it down to two choices. Apartment A has a $300 security deposit and costs $800 each month. Apartment B has a $900 deposit and costs $500 each month.
Answer:
Apartment A will cost more than Aparment B after 2 months which means from the third month and above, Apartment A will cost more than Aparment B
Step-by-step explanation:
Write
Let the number of months be represented as y
Apartment A has a $300 security deposit and costs $800 each month.
$300 + $800 × y
300 + 800y
Apartment B has a $900 deposit and costs $500 each month
$900 + $500 × y
900 + 500y
An inequality to determine when Apartment A will cost more than Aparment B :
Apartment A > Apartment B
300 + 800y > 900 + 500y
300 + 800y = 900 + 500y
Collect like terms
800y - 500y = 900 - 300
300y = 600
y = 600/300
y = 2 months
Therefore Apartment A will cost more than Aparment B after 2 months which means from the third month and above, Apartment A will cost more than Aparment B
Jordan can ride her skateboard 75 meters in 30 seconds. How long will it take Jordan to ride her skateboard 1,500 meters? Solve on scrap paper and enter your answer on Zearn. meters seconds 75 30 It will take Jordan seconds to ride her skateboard 1,500 meters.
Answer:
20 minutes
Step-by-step explanation:
I need help with the question
Answer:
B?
Step-by-step explanation: You need to find the area to find the excact mesuments.
Meryl needs to cut down 10.5 trees for every 5 cabins she builds.
Answer:
6.3, 14.7
Step-by-step explanation:
10.5 tress for 5 cabins, using 10.5/5 (2.1) we can assume there is 2.1 trees per cabin.
3*2.1= 6.3
7*2.1=14.7
Answer:
the answers are 6.3 and 14.7. Put the 6.3 beside the 3 in the table and put the 14.7 beside the 7 or it'll be counted as incorrect.
help please !
10•f(7)+9•g(-1)=
Answer:
-1
Step-by-step explanation:
By the rule of the functions, 10.[f(7)] + 9[g(-1)] = -1
From the graph attached,
Blue curve represents the function 'f' and the purple curve represents function 'g'.
We have to find the value of the expression with the help of the graph attached,
For a function y = f(x), (x, y) is a point on the curve representing the values on x-axis and y-axis respectively.
Given expression → 10[f(7)] + 9[g(-1)]
Since, y = f(x)
Therefore, for x = 7 y-value will be,
y = f(7) = -1
Similarly, y-value of the function 'g' at x = (-1) will be,
y = g(-1) = 1
By substituting these values in the expression,
10.[f(7)] + 9.[g(-1)] = 10(-1) + 9(1)
= 10(-1) + 9
= -10 + 9
= -1
Therefore, 10.[f(7)] + 9[g(-1)] = -1 will be the answer.
Learn more,
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Giovanni went to Los Angeles, California, for the summer to visit his cousins. He used a map of bus routes to get from the airport to his cousin’s house. The distance from the airport to his cousin’s house is 56 km. On his map, the distance is 4 cm. What is the scale factor?
What are the coordinates of quadrilateral ABCD?
Answer:
the tops coordinates are A(0,6) B(4,6) C(6,4) D(2,4)
bottom A(0,3) B(2,3)C(3,2)D(1,2)
Step-by-step explanation:
Answer:
the tops coordinates are A(0,6) B(4,6) C(6,4) D(2,4)
bottom A(0,3) B(2,3)C(3,2)D(1,2)
Step-by-step explanation:
1x + 2 - 3 = 8
what is x?
Answer:
x= Multiplication
Step-by-step explanation:
1 x +2 -3 =8
Answer:
x = 9
Step-by-step explanation:
Hope this helps
Is (0,1) , (1,3) , (2,5), (3,7) a function?
Answer:
Yes it is a function.
use you can try out the Vertical Line test which states that if your line intersects repeatedly it is not a function.
Every x-value is paired with a y-value. If the x-value is being paired with more than one y-value it does not pass the test.
All these values you had listed pass the vertical line test.
Hope this helps!
Step-by-step explanation:
Ben has $ 400 in his account. Every week, he withdraws $30 for expenses. Without
making any deposits, how many weeks can he withdraw to maintain a balance of $150?
Please it’s urgent. Write a solution.
Answer:
Step-by-step explanation: let w be for weeks
30w > 150
30w > - 400 - 30 30w - 30
30w-150
w= -370