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3 years ago

L Pretest: Unit 3

Mathematics

2 answers:

tamaranim1 [39]3 years ago

7 0

B

Explanation:
4x-3-(x+4)
4x-3-x-4
3x-7

Alona [7]3 years ago

3 0

B, if you would just work it out

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Write an equation of a line with the given slope and y intercept m =1/4,b=-3/4

leva [86]

Answer: y=1/4x-3/4

Step-by-step explanation:

We have our equation of a line formula y=mx+b

Then we substitute the given and get y=1/4x-3/4

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3 years ago

Bogdan [553]

The answer is C. I hope this helps you.

8 0

3 years ago

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Add the polynomials 3x^5-2x^3+4x + 4x^6-5x^5+4x^3-x^2

RUDIKE [14]

Answer: B

4x^{6} - 2x^{5} + 4x^{3} -x^{2} +4x

Step-by-step explanation:

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3 years ago

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A growth medium is inoculated with 1,000 bacteria, which grow at a rate of 15% each day. What is the population of the culture 6

ddd [48]

Answer:

The population of bacteria after 6 days is 2,313.06

Step-by-step explanation:

Given as :

The initial population of bacteria = i = 1,000 bacteria

The growth rate of bacteria per day = 15%

Let The population of bacteria after 6 days = f

The time period of growth = 6 days

Now, According to question

The population of bacteria after 6 days = initial population × $(1+\dfrac{\textrm rate}{100})^{\textrm time}$

Or, f = i × $(1+\dfrac{\textrm r}{100})^{\textrm t}$

Or, f = 1000 × $(1+\dfrac{\textrm 15}{100})^{\textrm 6}$

Or, f = 1000 × $(1.15)^{6}$

Or, f = 1000 × 2.31306

∴ f = 2,313.06

So,The population of bacteria after 6 days = f = 2,313.06

Hence,The population of bacteria after 6 days is 2,313.06 Answer

3 0

3 years ago

Can someone help me please and thanks oh and it 3 and 6

ivolga24 [154]

The answer for number 3 is 96.7 if you want the work shown I would recommend you to download the app Socratic and for number six you multiply.75x14 then also multiply.35x7 then add add up the answers which will be 12.95 then you subtract that from 15 the answer is $2.05

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3 years ago