515x + 285y=11,080. X+Y=30

Answers

Answer 1

Answer:

work is shown and pictured

515x + 285y=11,080. X+Y=30
Answer 2

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

-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

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                                         ⇒ answer

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

each rose is $3
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!

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)

What does n equal?
4n+2n=18

Answers

4n+2n=18
6n=18
6n/6=18/6
n=3

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

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

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 ;)

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

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:



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

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

You’re answer is 4

36/9=4

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

Answer the question below fast​

Answers

Answer:

The answer is 10.5 in decimal form

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.

hope u like it ‍❤️‍‍❤️‍❤️‍

for any question comment me

❗️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

U want me to help u with all


[tex] \sqrt{4} [/tex]
find each square root​

Answers

Answer:

2

Step-by-step explanation:

[tex] \sqrt{4} = 2 \\ 2 \times 2 = 4[/tex]

The answer is two for square root

Is my answer right? I think it’s A, but I don’t want to get it wrong.

Answers

The answer is 16 if you solve it, because the square root of 64 is 8 and 2 * 8 = 16

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)

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!

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

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

14. To get the length of each side, you will have to find the square root of 189 to find what two numbers multiplied by itself will get to that number. The square root of 189 is about 13.7, to the nearest tenths is 14

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.

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

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

Help 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

— 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

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:

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.

arithmetic sequence formula
an=a1+d(n-1)
-3+5(n-1)
-3+5n-5
5n-8
a21=5(21)-8
a21=97

What is the measure of angle SRW

Answers

do you have a picture of the whole question?

Answer:95

Step-by-step explanation:

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?

The answer is greater. So 2.04 is GREATER than 2.021
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