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Sophie [7]
2 years ago
15

(3+5)x7-[10+(45-15)\5]

Mathematics
1 answer:
Gelneren [198K]2 years ago
7 0
Use\ PEMDAS\\\\(3+5)\times7-[10+\frac{(45-15)}{5}]=(8)\times7-(10+\frac{30}{5})\\\\=56-(10+6)=56-16=\boxed{\boxed{40}}
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A negative correlation between two variables x and y usually yields a negative p-value for r.
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Casey cuts a 2-pound melon into two pieces and puts each piece on a plate.
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Yes, because each plate has 1 part of the melon.

Step-by-step explanation:

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Slope Intercept Form And Equations From Graphs
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Answer:

1. Choice B

2.  Choice C

3.  X=-2

4.  Choice A

5. y = 5/2 x + 5

Step-by-step explanation:

1.  

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point slope form

y-y1= m (x-x1)

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Choice B


2.  (-3,-1)  (1/2,2)

slope = (y2-y1)/(x2-x1)

m=(2--1)/(1/2--3)  = (2+1)/(1/2+3) = 3/(3.5) =  multiply top and bottom by 2

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point slope form

y-y1 = m(x-x1)

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y+1 =6/7 (x+3)

multiply by 7

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subtract 7y from each side

7 = 6x-7y+18

subtract 18 from each side

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Choice C


3.  x=-2

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      = (-4-2)/(1--1) = -6/(1+1) = -6/2 = -3

point slope form

y-y1 = m(x-x1)

y-2 = -3(x--1)

y-2 = -3(x+1)

y-2 = -3x-3

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y = -3x-1

Choice A


5.  (-2,0)  (0,5)

the y intercept is 5

slope is change in y over change in x

slope =(y2-y1)/(x2-x1)  = (0-5)/(-2-0) = -5/-2 = 5/2

slope intercept form

y= mx+b

y = 5/2 x + 5



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In a group of 60 students, 18 students take Algebra I, 20 students take Algebra II, and 10 students take both subjects. How many
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Your answer is B. 12. 

12 kids are unaccounted for after you subtract the kids that take A1, then A2, the both subjects. 
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