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motikmotik
3 years ago
5

Solve each system by substitution y=2x-1. 3x+8y=11

Mathematics
2 answers:
OLga [1]3 years ago
8 0

Answer:

x=1, y=1

Step-by-step explanation:

Sub y=2x-1 into 3x+8y=11

3x+8(2x-1)=11

3x+16x-8=11

19x=11+8

19x=19

x=1

Sub x=1 into y=2x-1

y=2(1)-1

y=2-1

y=1

adoni [48]3 years ago
7 0
Since 8+3 already equals 11, x=1 and y=1
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On a Timeline a milestone 11 years in the future will be the ___ of a milestone 20 years in the future and to the ___ of a miles
Katen [24]

Answer:

On a Timeline a milestone 11 years in the future will be the 11/20 of a milestone 20 years in the future and to the 11/25 of a milestone 25 years in the future.

Step-by-step explanation:

Milestone - 20 years in the future.

x = \frac{11\,yr}{20\,yr}

Milestone - 25 years in the future.

y = \frac{11\,yr}{25\,yr}

5 0
3 years ago
A bacteria population starts at 500 and doubles every 8 hours. What is the bacteria population after 12 hours?
Finger [1]

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1000

Step-by-step explanation:

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4 0
3 years ago
HELP ME PLEASE<br> Solve for x: -6 – 5x = 29
Lynna [10]

Answer:

x = -7

Step-by-step explanation:

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operations, and stands for:

Parenthesis

Exponents (&Roots)

Multiplications

Divisions

Additions

Subtractions

~

First, add 6 to both sides of the equation:

-5x - 6 = 29

-5x - 6  (+6) = 29 (+6)

-5x = 29 + 6

-5x = 35

Next, divide -5 from both sides of the equation:
(-5x)/-5 = (35)/-5

x = 35/-5

x = -7

-7 is your answer for x.

~

4 0
2 years ago
1 plus 1 divisble times 900 to the power of 4
ladessa [460]
0.00888889 I believe
6 0
3 years ago
HELP ME! In a complete sentence, describe the relationship between the three angles in the diagram below. Write and solve an equ
AlexFokin [52]

Answer:

  b = 17

  ∠QPS = 124°

  ∠SPT = 17°

  ∠TPR = 39°

Step-by-step explanation:

  • The sum of the three angles shown is a linear angle, with a measure of 180°.

This fact can be used to write an equation:

  (8b -12)° +b° +(2b+5)° = 180°

  11b -7 = 180

  11b = 187

  b = 17

  8b -12 = 8(17) -12 = 124

  2b +5 = 2(17) +5 = 39

The value of b is 17.

The angle measures are ...

  ∠QPS = 124°

  ∠SPT = 17°

  ∠TPR = 39°

4 0
3 years ago
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