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saul85 [17]
2 years ago
6

Need help will get brainliest

Mathematics
1 answer:
Aleksandr [31]2 years ago
3 0

Answer:

400 Miles in 8 Inches

Step-by-step explanation:

let x = miles

1/2 in = 25 mi

8 in = x

1/2 * 8 = 16

16*25= 400

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A coach divided his team into two groups of equal size.
DerKrebs [107]

Applying the percentages, and considering that 70% of the first group drinks at least 2 glasses of water a day, it is found that 0.725 = 72.5% of the team drinks at least 2 glasses of water a day.

The team is divided into two equal groups, hence, each represents 50%.

The <em>percentages </em>associated with drinking at least 2 glasses of water a day is:

  • 70% of 50%(first group)
  • 75% of 50%(second group)

Hence, applying the weighed percentage, the total percentage is:

T = 0.7(0.5) + 0.75(0.5) = 0.725

0.725 = 72.5% of the team drinks at least 2 glasses of water a day.

A similar problem is given at brainly.com/question/1517088

4 0
3 years ago
Solve the equation.<br> 5 = -2n<br> n =<br> Pls hurry 20 points
Katarina [22]
I’m pretty sure it’s n=-5
Hope this helps have a great day
3 0
3 years ago
Read 2 more answers
Will mark brainliest please help Debbie notices that the amount owed on her monthly heating bill varies inversely with the avera
Alekssandra [29.7K]

Answer:

The bill is $1837.5

Step-by-step explanation:

Given

B = Bills

T = Temperature

B\ \alpha\ \frac{1}{T} --- The variation

T = 35; when B = 210

Required

Find B when T = 40

B\ \alpha\ \frac{1}{T}

Express as an equation

B = \frac{k}{T}

Make k the subject

k = BT

<em>T = 35; when B = 210</em>

k = 35 * 210

k = 7350

When T = 40, we have:

k = BT

7350 = B * 40

Make B the subject

B = \frac{7350}{4}

B = 1837.5

7 0
2 years ago
How much of a spice that is 30% salt should be added to 175 ounces of a spice that is 65% salt in order to make a spice that is
klasskru [66]
\bf \begin{array}{lccclll}&#10;&amount&concentration&&#10;\begin{array}{llll}&#10;concentrated\\&#10;amount&#10;\end{array}\\&#10;&-----&-------&-------\\&#10;\textit{30\% spice}&x&0.30&0.30x\\&#10;\textit{65\% spice}&175&0.65&(175)(0.65)\\&#10;-----&-----&-------&-------\\&#10;mixture&x+175&0.50&(x+175)(0.50)&#10;\end{array}

so.. as you can see, we use the decimal notation for the percentages... 65% is just 65/100 and 50% is just 50/100 and so on

so.. whatever the salted amounts are, we know they'll add up to (x+175)(0.50)

thus  (0.30x) + (175)(0.65) = (x+175)(0.50)

solve for "x"
5 0
3 years ago
A paper company produces 238,000 sheets of paper. A machine organizes the paper
kenny6666 [7]

Answer: 11.33

Step-by-step explanation: First you must multiply 42 x 500, which gets you 21,000. Then you divide 238,000 by 21,000 to get 11.33

3 0
2 years ago
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