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Advocard [28]
2 years ago
8

Help me out please this is my sister's lol

Mathematics
1 answer:
nalin [4]2 years ago
5 0

It's nice to help your sister.

a) 9711 rounds to 10000

b) 6549 rounds to 7000

c) 25499 rounds to 25000

d) 979501 rounds to 980000


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Alvin completely filled his 21-gallon
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7 cents per gallon if his tank was completely empty upon filling

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55.23/21=2.63 per gallon at original gas station

2.63-2.56=.07 per gallon saved

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What is the value of x2 + 4 for x = 5?<br><br> The x2 is x squared.
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<span>x2 + 4
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Angela and Michelle shared some money in the ratio 4: 9 then Angela gave Daniel half her share.Michelle gave Daniel a third of h
SVEN [57.7K]

Using a system of equations, it is found that £52 was originally shared.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the variables are given as follows:

  • Variable x: Angela's share.
  • Variable y: Michelle's share.
  • Variable z: Daniel's share.

Angela and Michelle shared some money in the ratio 4: 9, hence, considering t as the total:

  • x = \frac{4t}{13}.
  • y = \frac{9t}{13}

Angela gave Daniel half her share.Michelle gave Daniel a third of her share. Daniel was given a total of £20, hence:

\frac{x}{2} + \frac{y}{3} = 20

\frac{4t}{26} + \frac{9t}{39} = 20

\frac{12t + 18t}{78} = 20

30t = 20 x 78

t = 20 x 78/30

t = £52.

More can be learned about a system of equations at brainly.com/question/24342899

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2 years ago
The slope of Consider the line whose equation is 3x + y - 3 = 0. The slope of any line that is parallel to this line is any line
PSYCHO15rus [73]

Answer:

parallel : y = -3x + 3

perpendicular : y = 1/3x + 3

Step-by-step explanation:

rewrite 3x + y - 3 = 0

y = -3x + 3

parallel has the same slope

so

parallel : y = -3x + 3

perpendicular is negative reciprocal of the slope

so

-3x becomes 1/3x

so

perpendicular : y = 1/3x + 3

8 0
2 years ago
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