MATHEMATICS MIDDLE SCHOOL

If x=2, and y=3, then 40-(9x)+y^2=____

Answers

Answer 1
Answer:

Answer:

31

Step-by-step explanation:

We need to substitute values of x and y into given formula

40 - (9x) +y² = 40 - (9*2) + 3² = 40 - 18 + 9 = 31
Answer 2
Answer:

Answer:

40-(9*2)+3^2

= 40 - 18 +9

= 31

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How do i solve quadratic equation using the quadratic formula

Answers

Answer:

Step-by-step explanation:

check the example I sent

Name all sets of numbers for 7.2

Answers


That's a verrrrrry interesting number ! 
It belongs to an infinite number of sets,
and I'm pretty busy right now.

Here are just a few of them:

-- real numbers
-- rational numbers
-- positive numbers
-- mixed numbers
-- multiples of  0.1
-- multiples of  0.2
-- multiples of  0.3
-- multiples of  0.4
-- multiples of  0.6
-- multiples of  0.8
-- multiples of  0.9
-- multiples of  1.2
-- numbers less than  7.21
-- numbers less than  7.22
-- numbers less than  7.23
.
.
etc.

-- numbers greater than  7.19
-- numbers greater than  7.18
-- numbers greater than  7.17
.
.
etc.

Please help i have to go to school in 40 min

Answers

2. 24/10 (if need to simplify it's 12/5)
3. 8/5 (can't simplify more)
5.60/5 (simply 12/1 = 12)
6.21/10 (can't simplify)
5: 12, 6: 2 and 1/10, 2: 2 and 2/5, 3: 1 and 3/5 to figure it out do whole number x numerator divided by denominator

Christopher wants to leave a 15% tip for his breakfast. His breakfast cost $23.00, howmoch should he leave for a tip?

Answers

Answer:

3.45

Step-by-step explanation:

23*15%=3.45

a path across a park is represented by the equation y=-2x+5. A new path will be built perpendicular to this path. the two paths cross at (-2,9). I identify the equation that represents the new path. ​

Answers

Answer:

y = ½x + 10

Step-by-step explanation:

Perpendicular lines have OPPOSITE MULTIPLICATIVE INVERSE RateofChanges[Slopes], so you need to have a slope of ½, like in the work shown below:

9 = ½[-2] + b

-1

10 = b

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Evaluate a2+ab-b2+5 when a=2 and b=3

Answers

a^2+ab-b^2+5\n\nsubstitue\ a=2\ and\ b=3:\n\n2^2+2\cdot3-3^2+5=4+6-9+5=6
Just plug in your valuables a=2 and b=3
Answer: 6
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