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Ronch [10]
3 years ago
7

To solve the equation 2−5(3+4x)=2x+7, Miranda's first step was to write 2−15−20x=2x+7. Which property did Miranda use in her fir

st step?
Mathematics
1 answer:
Aneli [31]3 years ago
3 0

Answer:

Step-by-step explanation:

distributive

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The sum of two numbers is 10. twice the first number is 4 more than twice the second. what are the two numbers?
Ludmilka [50]
X+ y = 10
2x = 2y+4

2x/2 = 2/2y+4/2
x = y + 2

x+y = 10
y+2+y=10
2y + 2 = 10
2y +2-2 =10-2
2y = 8
2y/2 =8/2
y = 4

x + y =10
x + 4 =10
x +4-4 =10-4
x = 6

Check
2x = 2y +4
2(6) = 2(4) +4
12 = 8+4
12= 12
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Papessa [141]

Answer:2

Step-by-step explanation:

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2 years ago
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- 5y – 10x=45<br>- 3y + 10x = -5​
Vsevolod [243]

Answer: y = -5; x = -2

Step-by-step explanation:

- 5y – 10x=45

- 3y + 10x = -5​

Combining both equations

-8y = 40

y= 40/ -8

y = -5

Substitute y = -5 into any of the equations to get the value of x

-5 (-5) - 10x = 45

25 -10× = 45

-10x =45 -25

-10× = 20

Divide both sides by -10

x = -2

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3 years ago
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Find the sum of each. 3.8+(−2.9)= <br><br> −38+(−57)= <br><br> −113+34=
Sindrei [870]

Answer:

➢ 0.9

➢ -95

➢ -79

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5 0
2 years ago
Change the form of the given function y=-2(X-8)^2+128 to the form of y=ax^2+bx+c using order of operations on the given function
DENIUS [597]
Y = 2(x² - 16x + 64) + 128
y = 2x² - 32x + 256
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3 years ago
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