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WITCHER [35]
3 years ago
13

Can Somebody help me real quick?

Mathematics
1 answer:
Eddi Din [679]3 years ago
8 0

Answer:The answer is (4 x -1)

Step-by-step explanation: How to solve this is tell the teacher I don’t know

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Look at the pic and please help me
egoroff_w [7]

Answer:

3 + 2 \sqrt{3}

6 0
3 years ago
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
Kendra says 6x65=390. Estimate to check Kendra’s answer
asambeis [7]

Hello!

There's more than one way in which to check this answer thru estimation. I'd find 6*60 and 6*70 separately, obtaining 360 and 420. It's obvious that Kendra's "390" is between 360 and 420, so it's likely that she's right.

6*65 does indeed equal 390.

5 0
4 years ago
Read 2 more answers
HELP PLEASE
oee [108]
Using a graph tool

case 1) 
2x-y=-13
y=x+9

the solution is the point (-4,5)
see the attached figure N 1

case 2)
y=3x-7
y=2x-5

the solution is the point (2,-1)
see the attached figure N 2

case 3)
3x+2y=10
6x-y=10

the solution is the point (2,2)
see the attached figure N 3

case 4)
y=6
x=-5
the solution is the point (-5,6)
see the attached figure N 4

case 5)
4x-3y=5
3x+2y=-9
the solution is the point (-1,-3)


case 6)
x+y=7
x-y=-1
the solution is the point (3,4)

the answer in the attached figure



6 0
4 years ago
Kazimir stopped jogging at 8:15. He started jogging 20 minutes earlier. At what time did Kazimir start jogging?
earnstyle [38]

7:55

That he answer

6 0
3 years ago
Read 2 more answers
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