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konstantin123 [22]
3 years ago
13

1 1 2 2) Solve (3 x 4) - (24 - 18)=

Mathematics
2 answers:
kiruha [24]3 years ago
5 0

Answer:

Use PEMDAS

Step-by-step explanation:

P arenthesis

E xponents

M ultiplication

D ivision

A ddition

S ubtraction

So you would do the math in the parenthesis first, then work from there.

(3 x 4) = 12

You are left with 12 - (24 - 18)

Then do the parenthesis that is left.

12 - 6

The answer is 6

navik [9.2K]3 years ago
4 0

Answer:

The answer is 6 if you need an explanation I have one

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12167 codes can be made
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use the plot of the concentration of cu(no3)3 versus absorbance provided. if the absorbance of an unknown was determined to be 0
Helen [10]

Using the linear regression equation, the concentration of the unknown solution is 0.2161 M.

Linear regression describes the relationship of two variables. It may not be exact but it is the line that best fit the data. The equation for a linear regression is in the form y = bx + a, where x and y are the two variables.

If the absorbance of an unknown was determined to be 0.67 absorbance units, using the linear regression equation provided from the plot, substitute the value of absorbance to the variable y and solve for the value of x or the concentration.

y = 3.8674x - 0.1657

0.67 = 3.8674x - 0.1657

3.8674x = 0.67 + 0.1657

3.8674x = 0.8357

x = 0.2161

Hence, the concentration is 0.2161 M.

Learn more about linear regression here: brainly.com/question/25311696

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6 0
1 year ago
Theresa is 14 years younger than her brother Jonathan. Together, their total age in years is 35. A) How many years old is Theres
ikadub [295]

A) The age of Theresa is 10 years 6 months old

B) Jonathan age is 24 years and 6 months old

<u>Solution:</u>

Given, Theresa is 14 years younger than her brother Jonathan.  

Let the age of Theresa be "n" years

Then the age of Jonathan will be "n + 14" years

Together, their total age in years is 35

<em><u>A) Finding age of Theresa:</u></em>

Jonathan age + Theresa age = 35  

n + 14 + n = 35  

2n + 14 = 35  

2n = 35 - 14  

2n = 21  

n = 10.5

So, age of Theresa is 10 years 6 months  

<em><u>B) Finding age of Jonathan</u></em>

Now, we know that n = 10.5  

Then Jonathan age = n + 14 = 10.5 + 14 = 24.5 years

So, Jonathan is 24 years and 6 months old

4 0
3 years ago
What is the product of (3x + 1)(3x – 4)?<br> Step by step.
kvasek [131]

Answer:

9x^2-9x-3

Step-by-step explanation:

3x*3x=9x^2

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1*3x=3x

1*-4=-3

9x^2-12x+3x-3

9x^2-9x-3

7 0
3 years ago
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Find the perimeter of the right triangle. If necessary, round to the nearest tenth.
puteri [66]

Answer:

a. 12 yd

Step-by-step explanation:

\sqrt{ {15}^{2} -  {9}^{2}  }  = 12

7 0
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