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2 years ago

7

Mike bought 7 new baseball trading cards to add to his collection. His dog ate half of his collection. There are now only 25 car

ds left. How many cards did Mike have to start with?

1 answer:

RSB [31]2 years ago

6 0

Answer:50

Step-by-step explanation:

Bc 25+25 is 50.

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The width of a rectangular field is 20 feet less than its length. The area of the field is 12,000 ft? What is the length of the

Scilla [17]

Answer:

The answer is 120 feet.

Step-by-step explanation:

The area of the field (A) is:

A = w · l (w - width, l - length)

It is known:

A = 12,000 ft²

l = w - 20

So, let's replace this in the formula for the area of the field:

12,000 = w · (w - 20)

12,000 = w² - 20

⇒ w² - 20w - 12,000 = 0

This is quadratic equation. Based on the quadratic formula:

ax² + bx + c = 0 ⇒

In the equation w² - 20w - 12,000 = 0, a = 1, b = -20, c = -12000

Thus:

So, width w can be either

or

Since, the width cannot be a negative number, the width of the field is 120 feet.

6 0

2 years ago

Read 2 more answers

Tali is trying to find the thickness of a page of his telephone bookTo do this, he takes a measurement and finds out that 550 pa

alina1380 [7]

Answer:245

Step-by-step explanation:

hope this helps

5 0

2 years ago

How to get the radical answer simplified

SSSSS [86.1K]

For 61 you can change it to √25/√49. √25=5 and √49=7 so it would simplify to 5/7.

3 0

3 years ago

Please help ASAP I'll give BRAINLIEST

bearhunter [10]

30

Hope this helps :)

5 0

2 years ago

A motor boat travels 60 miles down a river in 3 hours but takes 5 hours to return upstream. Find the rate of the boat in still w

prohojiy [21]

Step-by-step explanation:

Given that,

A motor boat travels 60 miles down a river in 3 hours but takes 5 hours to return upstream,

We know that,

Speed = distance/time

The rate while moving downstream $=\dfrac{60}{3}=20\ mph$

The rate while moving upstream $=\dfrac{60}{5}=12\ mph$

The rate of the boat in still water is the average of these:

$v_s=\dfrac{20+12}{2}=16\ mph$

The rate of the current is the difference between the boat speed and actual speed = 16 mph - 12 mph = 4 mph

Hence, this is the required solution.

7 0

2 years ago