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DENIUS [597]
2 years ago
5

Solve each system of equations by substitution -4x+y=-5 and 2x+y=7

Mathematics
2 answers:
Nadya [2.5K]2 years ago
6 0

Answer:

(2,3)

Step-by-step explanation:

cestrela7 [59]2 years ago
6 0

Answer:

x = 2 and y = 3

Step-by-step explanation:

-4x + y = -5  -------------------(I)

         y = 4x  - 5 ------------(II)

2x + y = 7 -------------------(III)

Substitute y = 4x - 5 in equation (III)

2x + 4x - 5 = 7

   6x - 5 = 7

Add 5 to both sides

6x = 7 + 5

6x = 12

Divide both sides by 6

x = 12/6

x = 2

Plugin x =  2 in (II)

y = 4*2 - 5

y = 8 -5

y = 3

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Answer:

a

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1 year ago
During a recent rainstorm, 8 88 centimeters of rain fell in Dubaku's hometown, and 2.36 2.362, point, 36 centimeters of rain fel
ehidna [41]

Question is Incomplete; Complete question is given below;

During a recent rainstorm, 8 centimeters of rain fell in Dubaku's hometown, and 2.36 centimeters of rain fell in Elliot's hometown. During the same storm, 15.19 centimeters of snow fell in Alperen's hometown. How much more rain fell in Dubaku's town than in Elliot's town?

Answer:

The rain fell 5.64 cm more in Dubaku's town than in Elliot's town.

Step-by-step explanation:

Given:

rain fell in Dubaku's hometown = 8 cm

rain fell in Elliot's hometown = 2.36 cm

snow fell in Alperen's hometown = 15.19cm

We need to find how much more rain fell in Dubaku's town than in Elliot's town.

Solution:

Now we can say that;

to find how much more rain fell in Dubaku's town than in Elliot's town we will subtract rain fell in Elliot's hometown from rain fell in Dubaku's hometown.

framing in equation form we get;

Amount of rain fell more in  Dubaku's town than in Elliot's town = 8-2.36 = 5.64\ cm

Hence The rain fell 5.64 cm more in Dubaku's town than in Elliot's town.

4 0
3 years ago
What is the least common multiple of 24, 16, and 32?​
notsponge [240]

Answer: the LCM is 96

Step-by-step explanation: looked it up

7 0
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Help pls don not under stand
m_a_m_a [10]

The expected value of health care without insurance is $437.25.

The expected value of health care with insurance is $1,636.40.

<h3>What are the expected values?</h3>

The expected values can be determined by multiplying the respective probabilities by its associated costs.

The expected value of health care without insurance = (1 x 0) + (0.32 x 1050) + (0.45 x $225) = $437.25.

The expected value of health care with insurance = (1 x 1580) + (0.32 x 75) + (0.45 x $72) = $1,636.40.

To learn more about multiplication, please check: brainly.com/question/13814687

#SPJ1

4 0
1 year ago
A sphere and cylinder have the same radius and height. The volume of the cylinder is 30m^3. What is the volume of the sphere?
Aleonysh [2.5K]

Answer:

15 is the volume I hope I helped

5 0
2 years ago
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