515x + 285y=11,080. X+Y=30
Answers
Answer:
work is shown and pictured
Answer:
x = 11, y = 19.
Step-by-step explanation:
515x + 285y=11,080
x + y = 30
Divide first equation by 5:
103x +57y = 2216
Now multiply the second equation by -57:
-57x - 57y = -1710
Adding the last 2 equations:
46x = 506
x = 506/46 = 11
Substituting for x in x + y = 30:
11 + y = 30
y = 19.
Related Questions
Does this equation has one solution, no solution, or infinitely many solutions? 2(x + 2) =2x - 8 Question
Answers
Answer:
no solution
Step-by-step explanation:
2(x + 2) = 2x -8
2x+4 = 2x-8
2x - 2x =-8 - 4
0 = -12
if the numbers r not the same on both right and left side it have no solution.
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M is the midpoint of CD. C has coordinates (-1, -1) and
M has coordinates (3, 5). Find the coordinates of D.
o (-5, -7)
O (4, 6)
O (6, 10)
0 (7, 11)
Answers
Answer:
(7, 11)
Step-by-step explanation:
If a line segment has endpoints at A([tex]x_1,y_1[/tex]) and B([tex]x_2,y_2[/tex]), the coordinates of the midpoint O(x, y) of the segment AB is given by the formula:
[tex]x=\frac{x_1+x_2}{2}\\\\y=\frac{y_1+y_2}{2}[/tex]
Given the midpoint M(3, 5) of the segment CD with the coordinates of C at (-1, -1). Let the coordinates of D be at ([tex]x_2,y_2[/tex]). Hence:
[tex]x=\frac{x_1+x_2}{2}\\\\ 3=\frac{-1+x_2}{2} \\\\6=-1+x_2\\\\x_2=6+1\\\\x_2=7\\\\y=\frac{y_1+y_2}{2}\\\\ 5=\frac{-1+y_2}{2} \\\\10=-1+y_2\\\\y_2=10+1\\\\y_2=11[/tex]
Hence the coordinates of D is at (7, 11)
-12 = 2 + 5y + 2y
Can you me do the work
Answers
Answer:
-2 =y
Step-by-step explanation:
-12 = 2 + 5y + 2y
Combine like terms
-12 =2+7y
Subtract 2 from each side
-12-2 = 2+7y-2
-14 = 7y
Divide each side by 7
-14/7 = 7y/7
-2 =y
Is my answer right? I think it’s A, but I don’t want to get it wrong.
Answers
— 7х – 10 = 18 + 3x
Solve the equation
Answers
Answer:
-2.8 = x
Step-by-step explanation:
-7х – 10 = 18 + 3x
+7x. +7x
-10. = 18+ 10x
-18. -18
-28. = 10x
/10. /10
-2.8 = x
Solve for y.
20y - 14y + 4 = 16
y =
Submit
Answers
Answer:
20y-14y+4=16
20y+(-14y) -4 -4
6y=12
y=2
Step-by-step explanation:
Combine like terms
subtrate 4 from each side
Divide 6 by 6 and 12 by 6
There for y=2
20y-14y+4=16
collect like terms
6y+4=16
Move constant to the right-hand side and change its sign
6y=16-4
Subtract the numbers
6y=12
divide by 6
y=2
In right triangle ABC, A = 42°. Find the measure of B which is the other non
right angle.
Answers
A=42
C=90
B=48
We can reason that C will be equal to 90 since it is the right angle. So to find B we have to subtract 90 from 180 to get 90 then subtract 42 to get 48
B=48 degrees
what is the21st term of -3,2,7
Answers
Answer:
102
Step-by-step explanation:
The first step is to find out how to find the next number in the term.
In this we can see that to get to the next number in the term we need to add 5.
The easiest way to figure out the 21st term of this, would be to multiply 5×21. This is equal to 105.
But since we started at three less than 5, we need to subtract 3 from 105. 105-3=102.
The 21st term is 102.
an=a1+d(n-1)
-3+5(n-1)
-3+5n-5
5n-8
a21=5(21)-8
a21=97
[tex] \sqrt{4} [/tex]
find each square root
Answers
Answer:
2Step-by-step explanation:
[tex] \sqrt{4} = 2 \\ 2 \times 2 = 4[/tex]
The shirt was $7.45 he pays with a $20 how much he getting back
Answers
Answer:
$12.55
Step-by-step explanation:
20-7.45=12.55
A ketchup Company purchased eight shipments of tomatoes, they were 900 tomatoes in each shipment how many did the company purchased in all
Answers
Answer:
7200 tomatoes
Step-by-step explanation:
8 shipments of tomatoes at 900 tomatos per shipment add up to 7200 tomatoes. That';s the product of 8 shipments and 900 tomatoes per shipment.
If f(x) = 2x², what is f(a+3)?
Answers
Answer:
2 a ^2 + 12 a + 18
Step-by-step explanation:
Substitute the given value into the function and evaluate.
Hope this helps!
NEED HELP ASAP!!!
A square patio has an area of 189 square feet. How long is each side of the patio to the nearest tenth? Each side of the patio is approximately ______ feet long.
Answers
If -11 + N = -11, then N is the
o multiplicative inverse
O additive inverse
O additive identity
o multiplicative identity
Answers
Answer:additive inverse
Step-by-step explanation:
A running shoe manufacturer has a fixed overhead of $ 580000.00, variable costs of $ 50.00, and a selling price of $ 100.00.
(c) Smallest number of pairs of shoes the company must sell to turn a profit:
(d) Total profit
Answers
Answer:
To make a profit the company must sell 11601 units.
Step-by-step explanation:
Giving the following information:
Fixed costs=$580,000
Unitary variable costs= $50
Unitary selling price= $100
First, we need to calculate the break-even point in units:
Break-even point in units= fixed costs/ contribution margin per unit
Break-even point in units= 580,000 / (100 - 50)
Break-even point in units= 11,600 units
To make a profit the company must sell 11601 units.
In order to determine the total profit, you need to use the following formula:
Total profit= 50*x - 580,000
x= units sold
For example:
x= 15,000
Total profit= 50*15,000 - 580,000
Total profit= $170,000
Point O is on line segment NP. Given OP = 10, NP = 2x, and NO = x +7,
determine the numerical length of NO.
Answer: NO =
Answers
Answer:
Given : NP is a line segment
and O is the mid point
therefore, we can write
NP = NO + OP
now put the values
under NP write 2x , NO = x+7 , OP = 10
Therefore the equation that comes to us after putting values is
2x = x+7 + 10
now solving
2x - x = 7+10
x = 17
therefore
numerical length of NO = x+7
i.e. , 17 + 7 = 24
HOPE U FIND THIS ANSWER USEFUL TO U
THANK U
PLZ I NEED ANSWERS NOW!!!! {(-1, 2), (0, 2), (5, 2)} is a function. TrueFalse
Answers
Answer:
True
Step-by-step explanation:
every x only has one y
I need help with this problem 2•1/2+4(4•2-7)
Answers
Answer:
5
Step-by-step explanation:
2×1/2 + 4×(4×2 - 7) = ⇒ multiplication1 + 4×(8 - 7) = ⇒ parenthesis1 + 4×1 = ⇒ multiplication1 + 4 = ⇒ addition5 ⇒ answerHelp please! I need the answers for the two fill-in-the-blanks.
Answers
Answer:
The first column is transformation
The second one I have forgotten
Need other help
What is the measure of angle SRW
Answers
Answer:95
Step-by-step explanation:
What do you know about x and y if their product is zero?
Answers
Step-by-step explanation:
Either x = 0 or y = 0. (Zero product rule)
Solve for 6x+3x-4=32 and find what is 2x
Answers
Answer:x=4 2(4)= 8
Step-by-step explanation:
6x+3x= 9x
9x-4=32
9x=36
36/9=4
36/9=4
What does n equal?
4n+2n=18
Answers
6n=18
6n/6=18/6
n=3
What is the solution to the situation below? The sum of three consecutive integers is 42
Answers
Answer:
13,14,15
Step-by-step explanation:
let the first number be n
The next 2 consecutive numbers will be
n+1 and n+2
Sum of these numbers is 42
n+ n+1+n+2=42
Combine like terms
3n+3=42
3n=42-3=39
n=39/3=13
So the numbers are
n=13
n+1=13+1=14
n+2=13+2=15
Answer the question below fast
Answers
Answer:
The answer is 10.5 in decimal form
What is 2.03_2.021 greater than less then or equal to !?
Answers
Answer:greater
Step-by-step explanation: .03 is greater than .02, think about it is 3 less or greater than 2?
If I said that in three days' time it would be a Thursday, I am sure that most of you would have no difficulty telling me that today was a Monday.
Try this one then. Yesterday was two days before Monday. What day is it today? Yes, you're right again. It's Sunday. Do you get the idea?
Now let's tackle a similar question from The National Mathematics Contest (1991) Paper:
Three days ago, yesterday was the day before Sunday. What day will it be tomorrow?
PLEASE HELP
Answers
Answer:
thursday
Step-by-step explanation:
Bethany sells roses and petunias. The expression 3r + 2.5p gives the cost (in dollars) of r roses and p petunias.
What is the cost of 7 roses and 8 petunias?
Answers
7 roses so 7 x 3 = $21
each petunia is $2.50
8 petunias so 8 x 2.5 = $20
$21 + $20 = $41
hope this helps!
❗️HELP❗️ I need help with part a,b, and c. Idk if I got part a and b correct pls help me! Thank you
Answers
Solve
1/2(3-12)=1/4(S+ 16)
Answers
Answer:
S = (-34)
Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask ;)