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Airida [17]
3 years ago
13

Find the solution of this system of equation. -4y=-64-6x, 4x-4y=-36

Mathematics
1 answer:
Liono4ka [1.6K]3 years ago
5 0
-4y=-64-6x
4x-4y=-36

-4y=-64-6x
y=16+(3x/2)

4x-4y=-36
4x-4(16+(3x/2))=-36
4x-64-6x=-36
-2x=-28
x = 14

4x-4y=-36
4(14)-4y=-36
56-4y=-36
-4y=-92
y = 23
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kozerog [31]

<u>Answer:</u>

  • 40% of the total marbles are green.

<u>Step-by-step explanation:</u>

Percentage: Green marbles/Total marbles

  • => 8/5 + 4 + 8 + 3
  • => 8/20

<u>Percentage formula:</u> \frac{a}{b} (100)<u />

  • => 8/20 x 100
  • => 8 x 5
  • => 40

Hence, 40% of the total marbles are green.

Hoped this helped.

BrainiacUser1357

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3 years ago
Please help using the picture below I need the surface area I also need an explanation
Taya2010 [7]

Answer:

155

Step-by-step explanation:

5*5=25

((5*13)/2)*4=130

130+25=155

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2 years ago
Which expression is equivalent to  4 7/8 ÷ 4 1/4​
cupoosta [38]

Answer:

Improper fraction: 39/34

Proper fraction: 1 5/34

Decimal: 1.147 (rounded to the nearest thousandths).

Step-by-step explanation:

Solve each expression given, if it has the same result, then the expressions is equivalent. Solve the given expression:

4 7/8 ÷ 4 1/4

First, change all fractions into improper fractions:

4 7/8 = (4 * 8)/8 + 7/8 = 32/8 + 7/8 = 39/8

4 1/4 = (4 * 4)/4  + 1/4 = 16/4 + 1/4 = 17/4

Next, find common denominators. Note that what you do to the denominator, you must do the numerator:

(17/4) * (2/2) = (34/8)

39/8 ÷ 17/4

Solve. First, change the division sign into multiplication, and then flip the second fraction:

39/8 ÷ 17/4 = 39/8 x 4/17

Multiply straight across:

39/8 x 4/17 = (39 x 4)/(8 x 17) = 156/136 = 39/34 (simplified), or 1 5/34.

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7 0
3 years ago
If there are 6 people, and each person has 2 coins, there are __ times as many coins as people.​
never [62]

Answer:

2

Step-by-step explanation:

6x2=12 12/6=2

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3 years ago
Find the percent change from the first value to the second 50;31
tiny-mole [99]

Answer:

-0.38%

Step-by-step explanation:

Divide 31 by 50. 31 / 50 = 0.62.

1 - 0.62 = 0.38

Since it is a decrease in change the percent change is negative.

-0.38%

6 0
2 years ago
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