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Colt1911 [192]
2 years ago
13

What is the sum of 2n-3+2.15n+5.98

Mathematics
2 answers:
faust18 [17]2 years ago
6 0

Answer:

=4.15n + 2.98

Step-by-step explanation:

Bezzdna [24]2 years ago
4 0

Answer:

4.15n+2.98

Step-by-step explanation:

hope this helps

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Solve systems of equations for y and x: <br><br> −5y + 8x = −18<br><br> 5y + 2x = 58​
Natali5045456 [20]

Answer:

(4, 10)

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> </u>

Equality Properties<u> </u>

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Coordinates (x, y)
  • Coefficients
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

-5y + 8x = -18

5y + 2x = 58

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

<em>Elimination</em>

  1. Combine 2 equations:                                                                                      10x = 40
  2. [Division Property of Equality] Divide 10 on both sides:                                x = 4

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Substitute in <em>x</em> [Original equation]:                                                                  -5y + 8(4) = -18
  2. Multiply:                                                                                                             -5y + 32 = -18
  3. [Subtraction Property of Equality] Subtract 32 on both sides:                      -5y = -50
  4. [Division Property of Equality] Divide -5 on both sides:                                y = 10
7 0
3 years ago
A shark is at -80 feet. It swims up and jumps out of the water to a height of 15 feet. Write a subtraction expression for the ve
SpyIntel [72]

15-(-80)=95

he jumped 95 ft.


6 0
3 years ago
Find the measure of the missing angle.<br> A<br> 43°<br> Help ASAP plz
irinina [24]

Answer:

47

Step-by-step explanation:

The missing angle is complementary to the angle shown and together they from 90.

Your missing angle is 90 - 43

6 0
3 years ago
At the 0.01 significance level, test the claim that the true percentage is less than 10%. based on the results, determine whethe
valentina_108 [34]
You should ask your parent/guardian
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4 0
3 years ago
1. Janessa is playing a board game with two friends. Using a single die, one friend rolled a four, and the other friend rolled a
SOVA2 [1]

Answer:

1)    3, 4

2) .  1, 2, 3, 4, 5, 6

3)   5, 6

4) .   1, 2, 5, 6

Step-by-step explanation:

7 0
2 years ago
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