Having troubles with inequalities.. 3.8x + 14.5 < 32

Answers

Answer 1

Answer: $3,8x + 14.5 < 32\n 3,8x<32-14,5\n 3,8x<17,5\ /:3,8\n x<(17,5)/(3,8)\n \n 17\frac12 :3\frac45=(35)/(2) :\frac{19}5=\frac{35}2\cdot \frac5{19}\n=(175)/(38)=4(23)/(28)\n x<4(23)/(28)\n x\in (-\infty;4(23)/(28))$

Answer 2

Answer:

Answer: x < 4.6 rounded to the tenths

Step-by-step explanation:

3.8x + 14.5 < 32

subtract 14.5 on both sides.

3.8x < 17.5

divide by 3.8 on both sides.

x < 4.60526316

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A certain type of bacteria doubles every 8 hours. A culture begins with 30 000. Without use of given equation, use the help of your ability to set up a pattern to determine how many bacteria are there after a) 8 hours b) 16 hours c)d days

Answers

Not sure what you mean by "without use of given equation".
At time 0hrs, there is 30 000.
Since it doubles every 8hrs, at time 8hrs there is 60 000 or 30 000 x 2
In another 8hrs, it will double again, so at time 16hrs, it will be 120 000 or 30 000 x 2 x 2
In another 8hrs, double again, so at time 24hrs, it will be 240 000 or 30 000 x 2 x 2 x 2
This is also 30 000 x 8 as 2x2x2=8. I'll come back to this later.

You add an extra x 2 for each 8 hrs. By the end of the 2nd day, it would be
30 000 x2 x2 x2 x2 x2 x2
This is also
30 000 x8 x8
Every day we add an extra x8
We use powers to specify this.
30 000 x 8^d
So after 4 days
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Note that this is NOT the same as 30 000 x 8 x 4

Solve the equation 3-x/5-4-x/2=1

Answers

Hi Ponie

Simplify both sides of the equation

3-x/5-4-x/2=1

3+ -1/5 x+ -4+ -1/2 x =1

Combine like terms

(-1/5 x + -1/2 x)+(3+-4)=1

-7/10 x +-1=1

-7/10 x -1=1

Add 1 to both sides

-7/10 x-1+1=1+1

-7/10 x=2

Multiply both sides by 10/-7

(10/-7)*(-7/10 x )= (10/-7)*2

x= -20/7

I hope that's help and I am sorry for the late answer !

Alvin is 5 years younger than elsa. the sum of their ages is 93. what is elsas age

Answers

Answer:

Step-by-step explanation:

Given:

Alvin is 5 years younger than Elsa, and the sum of their ages is 93.

Let x represent Elsa's age, so Alvin's age would be x - 5 because he is 5 years younger.

x + x - 5 = 93

Add like terms.

2x - 5 = 93

Add 5 to both sides.

2x = 98

Divide both sides by 2.

x = 49

Which one of the following mathematical statements is true? A. 0 ÷ 28 = 0 B. 28 – 0 = 0 C. 28 ÷ 0 = 0 D. 28 0 = 0

Answers

The mathematical statemen that is true is the A. 0 divided by 28 eauals 0. In fact 0 divided by any number is 0. Remember that no matter how you divide 0 it cannot be any different than 0. Or imagine that division means to distribute a thing into several parts. So, if you distribute 0 things among 1 or 2 or 300 parts, the result is always 0.

0÷28=0 correct answer

Sin42cos17-cos42sin17

Answers

Would be sin(42-17)=sin25

What is the value of the function at x=−2? y=−4 y equals negative 4 y = 0 y, = 0 y = 2 y = 2, y = 3

Answers

Based on the graph which models the function at x = -2 (see attachment), the corresponding y-value is y = 3.

What is a function?

In Mathematics, a function can be defined as a mathematical expression which can be used to define and show the relationship that exist between two or more variables in a data set.

In this scenario, there are several values (points) on the given linear graph expressed as a coordinate (x, y). Hence, the x-values on the x-axis is directly proportional to the y-values on the x-axis.

By critically observing the graph which models the function at x = -2 (see attachment), we can logically deduce that the corresponding y-value is three (3).

Read more on function here: brainly.com/question/4246058

#SPJ1

Answer:

Ik im late but yea

Step-by-step explanation:

I took the test :O

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