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satela [25.4K]
3 years ago
13

Identify the solution to the system of equations 4x-y=7 -12x+3y=-21

Mathematics
1 answer:
Elza [17]3 years ago
5 0

Answer:

Step-by-step explanation:

The equations are not independent. They represent the same graph.

There are an infinite number of solutions.

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Ayana has 220 coins in her piggy bank Of those 40percent are pennies. Out of the coins that are not pennies 25 percent are partn
Rzqust [24]
To find a percent of a number, multiply the percent by the number.

First we find the number of pennies.

40% of 220 =

= 40% * 220

= 0.4 * 220

= 88

88 coins are pennies.

220 - 88 = 132

132 coins are not pennies.

Now we find 25% of 132.

25% of 132 =

= 25% * 132

= 0.25 * 132

= 33

33 coins are partners.

(Did you mean quarters instead of partners?)
3 0
3 years ago
14 kg of apples cost $154. How much would 16 kg cost?
mixer [17]
$176 for 16 kg

14kg=154
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6 0
3 years ago
Read 2 more answers
Need help please. Thanks so much.
Bingel [31]

Answer:

(-1,\frac{17}{6})

(3,\frac{3}{2})

(-5,\frac{25}{6})

Step-by-step explanation:

The given equation is 2x+6y=15

We substitute the ordered pairs to see which ones satisfies the equation.

For (-1,-8), we put x=-1 and y=-8 to get:

2(-1)+6(-8)=^?15

-2+-48=^?15\\-50=^?15

This is not true.

For (-1,\frac{17}{6})) we put x=-1 and y=\frac{17}{6} to get

2(-1)+6*\frac{17}{6})=15\\ -2+17=15\\15=15

This is true

For (3,3/2) we have 2(3)+6(3/2)=15

This implies 6+9=15

15=15

This is also True

For (-5,25/6), we have 2(-5)+6(25/6)=-10+25=15

This is also true.

8 0
3 years ago
even built a scale model of the Gateway Arch in St.Louis the actual height of the Gateway Arch is 630 feet the height of the mod
suter [353]
This is eazy 630=90x
divide 90 on both sides
7=x 
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7feet=1in
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Here's yet another coordinates problem! Please solve ASAP if you can. Thank you all very much! :)
Olegator [25]
(0,0) is the cost of 0 bags of peanuts. This is because the x-axis is labeled "Bags of Peanuts", and an x-value of 0 implies 0 bags of peanuts.
7 0
3 years ago
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