MATHEMATICS HIGH SCHOOL

(07.02 MC)An equation is shown below:

5(3x − 4) = 1

Which of the following correctly shows the first two steps to solve this equation?

Step 1: 15x − 20 = 1; Step 2: 15x = 21
Step 1: 15x − 4 = 1; Step 2: 15x = 5
Step 1: 8x + 1 = 1; Step 2: 8x = 0
Step 1: 8x − 9 = 1; Step 2: 8x = 10

Answers

Answer 1
Answer: the first choice is your correct answer :)
Answer 2
Answer:

Answer:

The first choice is the correct answer

Step-by-step explanation:

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I can't quite figure out how to solve this... I would imagine that there should be an end amount or some value from in between... I just don't know. Please help?

Answers

Answer:

i think it is 12\left \{ {{y=2} \atop {x=2}} \right. \leq \n\n

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

250 + 200h = 300 + 180h250 + 200h = 300 + 180h 
      − 180h           − 180h
250 +  20h = 300
h = credit hours

Answers

250+200h = 300+180h
     -180h            -180h
250+20h = 300
-250         -250
20h = 50
/20     /20
h = 2.5
 

Answer:h=2.5

Step-by-step explanation:

Which expressions are equivalent to 3x + 2(x − 1) − 4? A.) 3x + 2x - 2 - 4 B.) 5x - 6 C.) 3(x - 4) D.) 3(x + 2) - 6 E.) 6(x - 1)

Answers

Answer:

A and B.

Step-by-step explanation:

The original expression is 3x+2(x-1)-4, so let's simplify it to obtain an equivalent expression:

First we destroy the parenthesis applying distributive property:

3x+2x-2-4, so option A is correct.

Then, add the similar terms (3x can be added with 2x and -2 can be added with -4):

5x-6, so option B is also correct.

C is not correct because 3(x-4) = 3x-12 ≠ 5x-6.

D is not correct because 3(x + 2) - 6 = 3x+6-6 = 3x ≠ 5x-6.

E is not correct because 6(x - 1) = 6x-6 ≠ 5x-6.

Then, correct options are A and B.
Multiplication takes precedence
Execute the command multiplication bracket

3x + 2* (x - 1)  - 4 =
3x + 2* x + 2* (-1 )  - 4 =
3x + 2x - 2 - 4 = 

We reduce similar words

3x + 2x - 2 - 4 = 
5x - 6

Answer B  

Barry open a compound interest savings account and his initial deposit was $923. The account pays 3.1% annual interest and is compounded annually. How many years it would take for the balance to be $1,735? Round your answer to the nearest hundredth of a year. Example: 23.13 The following is the balance function for compound interest account where: P is the initial deposit, r is the annual interest rate, n is the number of compounding times per year, t is the number of years

Answers

Answer:

The account pays 3.1% annual interest and is compounded annually. How many years it would take for the balance to be $1,735

Step-by-step explanation:

)) A triangle has sides with lengths of 5 inches, 12 inches, and 13 inches. Is it a righttriangle?
yes
no​

Answers

Answer:Yes

Step-by-step explanation:

Given

Triangle has sides

length a=5\ in.

b=12\ in.

c=13\ in.

If the triangle is Right angled then it must satisfy the Pythagoras rule

(\text{Perpendicular})^2+(\text{base})^2=(\text{Hypotenuse})^2

(a)^2+(b)^2=(c)^2

5^2+12^2=13^2

25+144=13^2

169=13^2

13^2=13^2

Therefore The given triangle is right angled

A storage tank is being designed for iodine. The storage tank is to be spherical and will withstand a maximum hydrostatic pressure of 1 comma 375 millimeters of mercury​ [mm Hg]. What is the diameter of the tank in meters​ [m]? The density of iodine is 5 comma 010 kilograms per cubic meter left bracket kg divided by m cubed right bracket.

Answers

Answer:

  3.73 m

Step-by-step explanation:

1375 mm Hg corresponds to a pressure of 18693.264 kgf/m^2.

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1 kgf is the force produced by a 1 kg mass in Earth's gravity field, about 9.8 N.
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