MATHEMATICS MIDDLE SCHOOL

Which function represents exponential decay?f(x) = 1/2(2)^x
f(x) = 3/4(-1/5)^x
f(x) = 3(7/2)^x
f(x) = 2(2/3)^x

Answers

Answer 1
Answer:

Answer:

f(x) = 2(2/3)^x

Step-by-step explanation:
Answer 2
Answer:

Answer:f(x)=2(2/3)^x

Step-by-step explanation:

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A triangle has a area of 36 square feet. if the height is 6 feet more than it's base, what are its height and base

Answers

The base and height of the triangle are 6 and 12 feet respectively.

What is the perimeter of a triangle ?

The perimeter of a triangle is sum of the lengths of it's sides.

According o the given question A triangle has area of 36 square feet.

Also given that the height is 6 feet more than it's base.

Assuming base of the triangle to be b.

∴ Height of the triangle (h) = (b+6).

We know area of a triangle is (1/2)×base×height.

∴ (1/2)×b×(b+6) = 36.

 b² + 6b = 72.

 b² + 6b - 72 = 0.

 b² + 12b - 6b - 72 = 0.

 b(b+12) -6(b+12) = 0.

 b - 6 = 0 OR b + 12 = 0.

 b = 6 OR B = -12.    ( -12 is not applicable since length can't be negative )

So, The base of the triangle is 6 feet.

∴ Height is 6 + 6 = 12 feet.

learn more about triangles here :

brainly.com/question/16886469

#SPJ2
base: 6 
height 12 
because 6+12 is 18 and 18 times 2 is 36

If 7 candies cost $4.20 how much does 12 candies cost?

Answers

4.20/7 = $0.6 That's for ONE candy Then do this : 0.6* 12 = $7.20

(4x+2y=84 , 3x + 5y=126) If the system of equations is graphed in a coordinate plane, the coordinates (x, y) of the intersection of the two lines are __________ .

Answers


x = 12 , y = 18    (12, 18) is the solution, intersection of the two lines.

Which equation could be used to create the data shown in the table?y = 4x + 1
y = 5x
y = 5x + 1
y = x + 4

table

x y
1 5
4 17
5 21
7 29
9 37

Answers

Answer with explanation:

The table is

 x y

1 5

4 17

5 21

7 29

9 37

→→Ratio of Difference between y value and x value or slope which is equivalent to back statement is

   =(17-5)/(4-1)=(21-17)/(5-4)\n\n=(29-21)/(7-5)=(37-29)/(9-7)=4

Slope between two points is same.So, the following points represents straight lie.

Equation of line is given by

    \rightarrow y-y_(1)=m(x-x_(1))\n\n\rightarrow y-5=4 (x-1)\n\ny-5=4 x-4\n\n4 x-y+5-4=0\n\n4x-y+1=0\n\ny=4 x+1

Option A: y=4 x+1                          

equation could be used to create the data shown in the table is the first equation y = 4x + 1

Jill drew the rectangle on grid paper. What is the area of the rectangle Jill drew?

Answers

What are the dimensions?

The population of Linton i​

Answers

They ordered 197 bags.

3,940 divided by 20 = 197 bags
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