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Nitella [24]
4 years ago
6

Please help tell me the answer and tell what u did​

Mathematics
1 answer:
gizmo_the_mogwai [7]4 years ago
7 0

Answer:

Hours Worked

Step-by-step explanation:

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Find the value of x showing your steps. identify the postulate that allowed you to solve for x.​
Lena [83]

Answer:

x = 14

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Equality Properties

<u>Geometry</u>

  • Congruency
  • All angles in a triangle add up to 180°

Step-by-step explanation:

<u>Step 1: Define</u>

3(x + 7)° = 63°

3(x + 7)° + 63° + y° = 180°

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Divide 3 on both sides:                    x + 7 = 21
  2. Subtract 7 on both sides:                 x = 14
3 0
3 years ago
can someone please help me with number 9, it has to do with solving inequalities! (I attached a picture!)
sashaice [31]
15000-1000x=13000
try this equation
7 0
3 years ago
PLEASE HELP !!!!!!!!!!!!!
dem82 [27]

Answer:

the 3rd won for sure

Step-by-step explanation:

hope I helped

3 0
3 years ago
Read 2 more answers
Two forces with magnitudes of 150 and 75 pounds act on an object at angles of 30° and 150°, respectively. Find the direction and
kompoz [17]
Answer:

Magnitude: 121.35 pounds

Direction: 21.64°

Explanation:

1) Decompose each force into its x - y components.

2) Force 1, F1: 140 pounds at angle of 30°

x-component: F1,x

F1, x = F1 *cos(30°) = 140 pounds * cos(30°) = 121.24 pounds

y-component: F1,y

F1,y = F1 * sin(30°) = 140 pounds * sin(30°) = 70 pounds.

3) Force 2, F2: 75 poounds at 150°

x-component: F2,x

F2,x = F2 * cos(150°) = 75 pounds * cos(150°) = - 64.95 pounds

y-component: F2,y

F2,y = F2 * sin(150°) = 75 pounds * sin(150°) = 37.5 pounds

4) Resultant Force, Fr

x-component: Fr,x

Fr,x = F1,x + F2,x = 121.24 pounds - 64.95 pounds = 56.29 pounds

y-component: Fr,y

Fr,y = F1,y + F2,y = 70 pounds + 37.5 pounds = 107.5 pounds

4.1) magnitude

|Fr| = √ [ (56.29 pouns)^2 + (107.5 pounds)^2 ] = 121.35 pounds.

4.2) direction

tan(α) = Fr,y / Fr,3 = 56.29 pounds / 107.5 pouns = 0.5236

=> α = arctan(0.5236) = 27.64 °


5 0
3 years ago
Share $210 in the ratio of 2:5
horrorfan [7]

Answer:

60:150

Step-by-step explanation:

So first you can divide 210 by 7 since it will be spilt into seven parts.

210/7 = 30

So in order to get them into the ratios:

30 x 2 = 60

30 x 5 = 150

So 210 in the ratio of 2:5 would be 60:150

You can check your work by adding 60 + 150 together.

6 0
3 years ago
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