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Travka [436]
3 years ago
13

1.) 2x + y = 3 2.) x - 2y = -1 If equation 1 is multiplied by 2 and then the equations are added, the result is

Mathematics
1 answer:
Alexus [3.1K]3 years ago
5 0
3×2=6
6+(-1)=6-1=5
The answer is 5
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if the bacteria population is doubling every hour, can you estimate the bacteria population at the time of 10 hours?
anygoal [31]

Answer:

Bacterial population at the time of 10 hours = 1040000

Step-by-step explanation:

Let the function that defines the bacterial population after 'x' hours is,

p(x) = a(b)ˣ

Where a = Initial population

And 'x' = Duration or time

Since bacterial population is getting doubled every hour,

2a = a(b)¹

b = 2

Therefore, function will be,

p(x) = a(2)ˣ

From the graph attached,

Point (5, 32500) lies on the graph of the function.

32500 = a(2)⁵

a = \frac{32500}{32}=1015.625

Therefore, the function will be,

p(x) = 1015.625(2)ˣ

For x = 10 hours,

p(10) = 1015.625(2)¹⁰

        = 1040000 bacteria

5 0
2 years ago
Help me solve this please
erastova [34]
Answer for x is 12.688 rounded to 12.69
3 0
2 years ago
Which statement is true about the function f(x) = square root of x
BlackZzzverrR [31]

Answer:


Step-by-step explanation:

Correct choice is A


Step-by-step explanation:


Consider parent function  The domain of this function is  and the range of this function is


Thus, the function  has the domain  and the range


State the domain and the range of all given functions:


A. The domain:


B. The range:


C. The domain:


D. The range:  




Read more on Brainly.com - brainly.com/question/10648085#readmore

5 0
3 years ago
Ryan biked from home to school in <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B5%7D" id="TexFormula1" title="\frac{1}{5}"
Ronch [10]

Answer:

2

Step-by-step explanation:

1/5*10

7 0
2 years ago
Read 2 more answers
Jimmy's Bakery sold 950 donuts last week. This week , the number of donuts sold increased 12%. How many more donuts were sold th
Mkey [24]
Step 1: Find 12% of 950
114
Step 2: Add the result to the original number
950 + 114 = 1064
Answer = 114
5 0
2 years ago
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