1. scientific notation and percent. (based on the ideas in objective 1 and objective 4.) 6 points
two percent of sennie's skin cells were burned when she escaped from a fire. if 3.5 x 100 of her skin cells
were burned then, how many skin cells were not burned?

skin cells were not burned.

Step-by-step explanation:

Let be "x" the number of Sennie's skin cells that were not burned when she escaped from the fire.

According the the data given in the exercise, you know that 2% represents of Sennie's skin cells that were burned. This means that the percent of her skin cells that were not burned is:

With this information you can write the following proportion:

Solving for "x", you get:

To express the result in Scientific notation, the decimal point must be after the first digit; then you must  move the decimal point two places to the left:

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm