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sp2606 [1]
4 years ago
7

Jonathan can jog 3 2/5 miles in 7/8 hour. find his average speed in miles

Mathematics
1 answer:
Aloiza [94]4 years ago
7 0
Average speed = dist/time
v = (17/5) ÷ (7/8)
v = (17/5) x (8/7)
v = (17 x 8) ÷ (5 x 7)
v = 136 ÷ 35
v= 3 + (31/35)
v = 3 31/35
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47 In 2012 there were approximately 8,950 public libraries in the United States. A survey found
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6802

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4 0
3 years ago
A data set consists of the following data points:
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4 0
3 years ago
For each value of y, determine whether it is a solution to -2y+75-5.<br> Is it a solution?
ser-zykov [4K]

Answer:

• No

• Yes

• Yes

• No

Step-by-step explanation:

To determine if the 4 given values of y are solutions to the inequality, start by solving the inequality. Solving an inequality is just like that of an equation, except that the direction of the sign changes when the inequality is divided by a negative number.

-2y +7≤ -5

Subtract 7 on both sides:

-2y≤ -5 -7

-2y≤ -12

Divide by -2 on both sides:

y≥ 6

This means that the solution can be 6 or greater than 6.

-10 and 3 are smaller than 6 and are not a solutions, while 7 and 6 satisfies the inequality and are therefore solutions.

_______

Alternatively, we can also substitute each value of y into the inequality and check if the value is less than or equal to -5.

Here's an example to check if -10 is a solution.

-2y +7≤ -5

When y= -10,

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= -2(-10) +7

= 20 +7

= 27

Since 27 is greater than 5, it is <u>not</u> a solution to the inequality.

3 0
2 years ago
What is 2/3 ÷ 4/5 = ?
11Alexandr11 [23.1K]

Answer:

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Step-by-step explanation:

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  • 2/3 × 5/4 =                ⇒  <em>simplify and multiply numerators and denominators</em>
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3 0
4 years ago
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diamong [38]

Answer:

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c = 30.50 + 3.25d

the number of days for which the cost are the same means

32 + 3d = 30.50 + 3.25d

by solving we find   d = 6 days

5 0
3 years ago
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