Help? pls pls plsplspspslspspsllss

21

Step-by-step explanation: sorry if I'm wrong but it should be 21

The weight of one baseball (0.3 pounds), ken should shade 3 Square box.

The weight of all the seven baseball (2.1pounds), he should shade this amount seven times.

The shaded part of the model will represent the expression 0.3 × 7

The total weight of the baseball is 2.1 pounds.  

Given that ;

Ken has no. of baseballs = 7

And each baseball have a weight is = 0.3 pounds

By unity method;

If 1 ball = 0.3 pounds

Then, 7 baseball = 7 × 0.3 pounds

So, 7 baseball = 2.1 pounds

Then, the total weight of the 7 baseballs is 2.1 pounds.

As per given in the question ;

We want to use the box to represent this data given in the following question .  

Since, the weight of the baseball is in decimal points

Let 0.1 pounds be 1 Square box.

The weight of one base ball (0.3 pounds), ken should shade 3 Square box.

Since 1 pounds is 1 Square box.

The weight of all the seven base ball (2.1pounds), he should shade this amount seven times.

This means that he need to shade 3 square box seven times. This shows that the amount used in the second part of the question means by how much must the square be shaded compare to question .  

The shaded part of the model will represent the expression 0.3 × 7 = 2.1

The total weight of the baseball is 2.1 pounds.

Perriodtt

Step-by-step explanation:

step-by-step explanation:

if x = 2 you have to find x to finish the problem

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places