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goblinko [34]
3 years ago
9

5x+3<7+7x Please explain in clear details

Mathematics
1 answer:
trasher [3.6K]3 years ago
4 0

Answer:

5x just means 5 times so, 5 times a number(or variable)plus three is less than 7 times a number variable)plus 7

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Posting algebra again :/
ioda
It is B
Have a good day
5 0
2 years ago
A bacteria culture starts with 160 bacteria and grows at a rate proportional to its size. After 5 hours there will be 800 bacter
Leona [35]

Answer:

Step-by-step explanation:

Let the rate at which the bacteria grow be represented by the exponential equation

P(t) = P0e^kt

P(t) is the population of the bacteria after time t

P0 is the initial population

k is the constant of variation

t is the time

If the initial Population is 160 bacteria's, them the equation becomes;

P(t) = 160e^kt

b) if After 5 hours there will be 800 bacteria, this means

at t = 5 p(t) = 800

Substitute and get k

800 = 160e^5k

800/160 = e^5k

5 = e^5k

Apply ln to both sides

Ln5 = lne^5k

ln5 = 5k

k = ln5/5

k = 0.3219

Next is to calculate the population after 7hrs i.e at t = 7

P(7) = 160e^0.3219(7)

P(7) = 160e^2.2532

P(7) = 160(9.5181)

P(7) = 1522.9

Hence the population after 7houra will be approximately 1523populations

c) To calculate the time it will take the population to reach 2790

When p(t) = 2790, t = ?

2790 = 160e^0.3219t

2790/160 = e^0.3219t

17.4375 = e^0.3219t

ln17.4375 = lne^0.3219t

2.8587 = 0.3219t

t = 2.8587/0.3219

t = 8.88 hrs

Hence it will take approximately 9hrs for the population to reach 2790

7 0
3 years ago
I really need help on this one!!
faltersainse [42]
137 because it’s the same as the angle given.
8 0
3 years ago
Read 2 more answers
A set of input and output values, such that each input has one or more outputs, is called a
Ainat [17]

Answer:

function  

Step-by-step explanation: A function is the one where you put an input to find x or y


5 0
3 years ago
Graph the following equations on the graphs below. (GRAPH PAPER ONLY NO WEBSITES) pt.2
Natasha_Volkova [10]

See Below

First, put them into y = mx + b form. From there you can graph them by identifying their slopes and y-intercepts.

7 0
3 years ago
Read 2 more answers
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