Silicon dioxide is dissolvable in water and has a high melting point because the atoms in the dioxide has a strong bond between them, which requires a lot of energy to break them.

6 0

3 years ago

For each greeting card Jacqui sells, she makes a profit of $0.35. In one week, she made a profit of $42. She sells the card for

Andrej [43]

ok so she is selling the card for .75 but makes a profit of .35

.75-.35=.4 (what wasn't profit) divid 42 by .4

42/.4=105+42 (have to add in profit portion) =$147 Gross income

5 0

2 years ago

Bacteria is being grown in a petri dish. The number bacteria B after t hours can be modeled by B(t) = 150e^0.585t. What is the i

Elina [12.6K]

The initial number of bacteria present is equal to 270 bacteria.
The number of bacteria that will be in the petty dish after 12 hours is 167818 bacteria.

<h3>What is an exponential function?</h3>

An exponential function can be defined as a mathematical function whose values are generated by a constant that is raised to the power of the argument. Mathematically, an exponential function is represented by this formula:

f(x) = eˣ

<h3>How to calculate the initial number of bacteria?</h3>

B(t) = 150e^0.585t

When t = 1, we have:

B(1) = 150e^0.585(1)

B(1) = 150e^0.585

B(1) = 269.25 ≈ 270 bacteria.

<h3>How many bacteria will be in the petty dish after 12 hours?</h3>

B(12) = 150e^0.585(12)

B(12) = 150e^7.02

B(12) = 167817.99 ≈ 167818 bacteria.

Read more on exponential functions here: brainly.com/question/27866047

#SPJ1

5 0

1 year ago

A student surveyed 226 classmates to see if they owned a dog or cat. There are 131 students who own a dog and 85 who own a cat.

Verizon [17]

C) 85
B) 46
D) 131
All you have to do it plug in the cats owned for c and dogs owned for d and then subtract the two for b. Hope that helps!

3 0

2 years ago