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Minchanka [31]
4 years ago
6

(NEED HELP ASAP)

Mathematics
1 answer:
denis-greek [22]4 years ago
8 0
Pick any value in the y column of the table. I'm going to pick 81. Divide the value you picked by the previous y value, which in my case would be 9

Dividing the values gives: 81/9 = 9

So the base is 9. We multiply each y value by 9 to get the next y value
Eg: to go from 1/81 to 1/9, we multiply by 9. Same for 1/9 to 1, and so on.

Answer: Choice B) 9

Note: This trick only works because x is increasing by 1 each time
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William bought a new backpack at the store when they were having a 40% off sale. If the regular price of the backpack was $35, h
Anton [14]
21.00 you would take and fine the how much 40 percent of 35 is then subtract it so 35*40/100=14     35-14=21


5 0
3 years ago
Read 2 more answers
Which expression is equivalent to the given expression?<br>4(3a + 2b – 7)<br>​
DochEvi [55]

Answer:

12a+8b-28

Step-by-step explanation:

Distribute

4(3a+2b-7)

4×3a=12a

4×2b=8b

4×-7=-28

So

12a+8b-28

4 0
3 years ago
Read 2 more answers
El área de la región rectangular es 4400cm2. Calcula el valor de m
Roman55 [17]

Answer:

m=52.17

Step-by-step explanation:

<em>The complete question in Spanish is</em>

El área de la región rectangular es 4400 cm2. Calcular el valor de m

largo :2m-20

ancho: m

<em>The question in English is</em>

The area of the rectangular region is 4400 cm2. Calculate the value of m

length :2m-20

width: m

we know that

The area of a rectangle is equal to

A=LW

where

L is the length

W is the width

we have

A=4,400\ cm^2

L=(2m-20)\ cm

W=m\ cm

substitute in the formula the given values and solve for m

4,400=(2m-20)m

Distribute in the right side

4,400=2m^2-20m

2m^2-20m-4,400=0

Solve the quadratic equation by graphing

Using a graphing tool

The solution is m=52.17  (the positive value is the solution)

see the attached figure

8 0
3 years ago
Solve x^2 - 4x - 7 = 0 by completing the square. What are the solutions?
sergejj [24]

Answer:

x = ±√11 +2

Step-by-step explanation:

Given in the question an equation,

x²- 4x - 7 = 0

Step 1

take 7 to the right side of equation

x²- 4x = 7

Step 2

To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of b, the coefficient of x

2ab = -4x

2xb = -4x

b = -2

Step 3

Take square of b and add it to each side of the equation.

x²- 4x + (-2)²= 7 + (-2)²

x²- 4x + 4 = 7 + 4

x²- 4x + 4 = 11

Step 4

Factor the perfect trinomial square

(x−2)² = 11

Step 5

take square root on both sides

√(x−2)² = √11

(x-2) = ±√11

x = ±√11 +2

8 0
4 years ago
Read 2 more answers
If x varies directly as y, find x when y = 8.<br><br> x = 14 when y = -2<br><br> X=_____
Zigmanuir [339]

Answer:

-56 maybe

Step-by-step explanation:

-2*-7=14

8*-7= -56

5 0
3 years ago
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