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Anni [7]
3 years ago
5

Write an equation of the line in slope-intercept form that passes through the points (1,4) and (-2,1)

Mathematics
1 answer:
Anastasy [175]3 years ago
5 0

Answer:

y=x+3

Step-by-step explanation:

4-1/1+2=3/3=1

y=x+b

1=1(-2)+b

1=-2+b

3=b

y=x+3

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Please help with the tennis court one.
solniwko [45]
We have two sides of length 'w'. They are the vertical sides.

We also have two sides of length '2w+6' which are the horizontal sides.

So we have these four sides
side1 = w
side2 = 2w+6
side3 = w
side4 = 2w+6

Let's add up those four sides to get
Perimeter = (side1)+(side2)+(side3)+(side4)
Perimeter = (w)+(2w+6)+(w)+(2w+6)
Perimeter = w+2w+6+w+2w+6
Perimeter = 6w+12

------------------------

Since the perimeter is given to be 228, and we found the perimeter expression to be 6w+12, this must mean that the two are equal

So, 6w+12 = 228

Let's solve for w

6w+12 = 228
6w+12-12 = 228-12
6w = 216
6w/6 = 216/6
w = 36

------------------------

Now that we know that w = 36, we can find the dimensions of this rectangle

The vertical sides are simply w, so the vertical sides are 36 feet each. I simply replaced w with 36.

The horizontal sides are a bit more complicated. The expression we have is 2w+6 or 2*w+6. Let's replace w with 36 and use PEMDAS to evaluate

2*w+6 = 2*36+6 = 78

------------------------------------------
------------------------------------------

Answers are...
Length = 78 feet
Width = 36 feet
(the length is the horizontal component, the width is the vertical)
5 0
4 years ago
Probability of numbers divisible by 9 from numbers 1-100?
quester [9]
11
(9, 18, 27, 36, 45, 54, 63, 72, 81, 90 and 99)
Those numbers divisible by 9 are the multiple of 9; thus need to know how many multiples of 9 there are between 1 and 100:

100 ÷ 9 = 11 r 1 ÷ last multiple of 9 is 11 × 9 (= 99)
→ There are 11 - 1 + 1 = 11 numbers between 1 and 100 which are divisible by 9.

(They are 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.)
7 0
4 years ago
Can anyone explain this to me please
timurjin [86]
Hello there,

To start it off, 2 x 39= 78
So a is correct that would be 2 x 30+9 = 2x39= 78
So b is correct as well. 2 x 40-1= 2 x 39= 78
c is questionable 2 x 30 +9= 60 + 9 = 69 
So d is correct 18 + 60 = 78
So e is correct 100-22 = 78

So 2 x 39 is not equal to (2 x 30) +9

Hope this helped!

5 0
3 years ago
1.03x+ 3.97x-5=13 solve for x.
ziro4ka [17]

Answer:

X = \frac{18}{5}, or X = 3.6

Step-by-step explanation:

For this problem we must isolate x

1.03x+3.97x-5=13 | Add 5 to both sides

1.03x+3.97x=18 | Add the x's

5x=18 | Now divide both sides by 5

x=\frac{18}{5}, x=3.6

3 0
3 years ago
Read 2 more answers
Flip a coin 4 times and calculate the experimental probability of the coin landing heads up.
Reika [66]

Answer:

Am going to say 50%

Step-by-step explanation:

Because you flip the coin four times so it could land on heads 2 times or tails 2 times.

5 0
3 years ago
Read 2 more answers
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