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VMariaS [17]
3 years ago
15

What did Martina do to the equation 4x=2x + 402 to get 2x = 402

Mathematics
1 answer:
Tpy6a [65]3 years ago
4 0

Step-by-step explanation:

she took the 2X and substract 4X-2X

the answer will be 2X=402

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Grade 7 math extra credit
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2400 in prize money...

the first winner will receive 1/3 of the money..
1/3 * 2400 = 2400/3 = 800
leaving 2400 - 800 = 1600

the next 10 winners will receive 1/10 of the remaining amount
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3 0
3 years ago
12 men working 8 hours a day complete a piece of work in 10 days to complete a the same work in 8 days working 15 hours a days t
daser333 [38]

12 men : 8 hours : 10 days


// Find if every man works 1 hour

12 x 8 men : 1 hour : 10 days

96 men : 1 hour : 10 days


//Find if every man works 15 hours

96 ÷ 15 men : 15 hours : 10 days

6.4 men : 15 hours : 10 days


//Find if every man works 1 day

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5 0
3 years ago
If a stadium has 50,000 seats, how many concert tickets would have to be sold for the event to be 85% sold out?
Anvisha [2.4K]

Answer:

42500

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50000x0.85=42500

6 0
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Write 64,500 in scientific notation
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Help with exercise
GalinKa [24]

The probability that a randomly selected chocolate bar will have between 200 and 220 calories is 3.97%

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

The zscore is given a:

z = (raw score - mean) / standard deviation

mean = 225, standard deviation o = 10.

a) For x = 200:

z = (200 - 225) / 200 = -0.125

For x = 220:

z = (220 - 225) / 200 = -0.025

P(-0.125 < z < -0.025) = P(z < -0.025) - P(z < -0.125) = 0.4880 - 0.4483 = 3.97%

b) For x = 190:

z = (190 - 225) / 200 = -0.175

P(z < -0.025) = P(z < -0.175) = 0.4286

The probability that a randomly selected chocolate bar will have between 200 and 220 calories is 3.97%

Find out more on equation at: brainly.com/question/2972832

#SPJ1

7 0
2 years ago
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