Gerard has $30$30 to spend on lunches this month. Lunch costs him $1.50$1.50 each day. After Gerard buys lunch for 88 days, which statement is true?

Answers

Answer 1

Answer: ok so
1.5 per day
88 days

multiply 1.5 fy 88 to get132 dollars spent

not sure what to do with the 30 dollars per month

Answer 2

Answer:

Gerard has spent less than 1/2 of his lunch money.

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What is greater , 42,000 mg or 24 g?

Answers

mg=miligrams=1/1000 gram
so conversion factor is
1g/1000mg
mulriply 42,000mg by 1g/1000mg
units cancel and you are left with
42g
42 g and 24 g
42 is greater than 24g so

42,000 mg is greater

42000 mg is greater
Hope this helps! :)

Increase 2850 by 18%

Answers

First we find 18% of 2850

= 18/100 * 2850 = 513 Use your calculator.

Since we are increasing by 18%, we add 513 t0 2850

= 2850 + 513 = 3363

Simplify. y^-3

............

Answers

Answer:

1/y^3

Step-by-step explanation:

Evaluate the expression
(2/5+11)x(10-(-3))

Answers

Answer: 741/5

Step-by-step explanation:

57/5*(10/3)

57/5*13

Answer: answer is 741/5x

Step-by-step explanation:

The coordinates below represent two linear equations. How many solutions does this system of equations have?

Line 1
x y
–4 5
0 2
Line 2
x y
0 5
4 2

A.
0

B.
exactly 1

C.
exactly 2

D.
infinitely many

Answers

so solve for the equations of the lines
y=mx+b
m=slope
b=y intercept

line 1=
(-4,5)
(0,2)
(x,y)
slope=(y1-y2)/(x1-x2)
x1=-4
y1=5
x2=0
y2=2
subsitute
(5-2)/(-4-0)=3/-4=-3/4
slope=-3/4
subsitute
y=-3/4x+b
subsitute one of the points
(0,2)
x=0 and y=2 is one solution
2=-3/4(0)+b
2=0+b
2=b
the equation is y=-3/4x+2

other line
(0,5)
(4,2)
x1=0
y1=5
x2=4
y2=2
sybsitute
(5-2)/(0-4)=3/-4=-3/4
slope=-3/4
subsitute
y=-3/4x+b
now subsitute one of the points to solve for b
(0,5)
x=0 and y=5 is one solution
5=-3/4(0)+b
5=0+b
5=b
y=-3/4x+5

so we have the lines/equations
y=-3/4x+2 and y=-3/4x+5
(at this point we can see that since slopes are the same and the y intercepts are different, they are paralell and therefor have 0 solutions, but for those who don't know paralellline thingie read on)

solve for common (x,y)
y=-3/4x+2
y=-3/4x+5
subsitute
-3/4x+2=y=-3/4x+5
-3/4x+2=-3/4x+5
subtract 2 from both sides
-3/4x=-3/4x+5
add 3/4x to both sides
0=5
fasle
there are no solutions

the answer is A: 0 solutions

Answer:

i just want the point because i dont have any go sit on a

Step-by-step explanation:

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The sum of 2 numbers is 30 and the difference is 10. What are the two numbers.

Answers

Answer:

20 + 10 = 30

Step-by-step explanation:

The sum of x and y is 30. In other words, x plus y equals 30 and can be written as equation A:

x + y = 30

The difference between x and y is 10. In other words, x minus y equals 10 and can be written as equation B:

x - y = 10

Now solve equation B for x to get the revised equation B:

x - y = 10

x = 10 + y

Then substitute x in equation A from the revised equation B and then solve for y:

x + y = 30

10 + y + y = 30

10 + 2y = 30

2y = 20

y = 10

Now we know y is 10. Which means that we can substitute y for 10 in equation A and solve for x:

x + y = 30

x + 10 = 30

X = 20

Summary: The sum of two numbers is 30 and their difference is 10. What are the two numbers? Answer: 20 and 10 as proven here:

Sum: 20 + 10 = 30

Difference: 20 - 10 = 10

20 & 10 for obvious reasons they both make 30 and have a difference of 10

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