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3 years ago

If a backpack costs $25, how much will it cost, in dollars, after a 20% discount?

Mathematics

2 answers:

postnew [5]3 years ago

7 0

Answer:

20 dollars

Step-by-step explanation:

the difference is 5 dollars

Readme [11.4K]3 years ago

6 0

Answer:

20 dollars

Step-by-step explanation:

After 20 percent is taken off there is 80 percent left so...

25 * .8 = 20

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Two drivers, Alison and Kevin, are participating in a drag race. Beginning from a standing start, they each proceed with a const

Vilka [71]

Answer:

Alison wins against Kevin by 0.93 s

Step-by-step explanation:

Alison covers the last 1/4 of the distance in 3 seconds, at a constant acceleration $a_a$ , we have the following equation of motion

$s/4 = a_at_a^2/2$

where s (m) is the total distance, ta = 3 s is the time

$s = 4a_a3^2/2 = 18a_a$

$a_a = s/18$

Similarly, Kevin overs the last 1/3 of the distance in 4 seconds, at a constant acceleration $a_k$ , we have the following equation of motion:

$s/3 = a_kt_k^2/2$

tk = 4 s is the time

$s = 3a_k4^2/2 = 24a_k$

$a_k = s/24$

Since $a_a = s/18$ we can conclude that $a_a > a_k$ , so Alison would win.

The time it takes for Alison to cover the entire track

$s = a_aT_a^2/2$

$T_a^2 = 2s/a_a = 2s/(s/18) = 36$

$T_a = \sqrt{36} = 6 s$

The time it takes for Kevin to cover the entire track

$s = a_kT_k^2/2$

$T_k^2 = 2s/a_k = 2s/(s/24) = 48$

$T_a = \sqrt{48} = 6.93 s$

So Alison wins against Kevin by 6.93 - 6 = 0.93 s

4 0

3 years ago

Which expression represents the<br>statement "the product of 3 less than a<br>number and 5"}

yan [13]

Answer:

5(x-3)

Step-by-step explanation:

5 0

3 years ago

Which equation can be used to find A, the area of the parallelogram shown? A = 5 × 9 A = 4 × 9 A = 12 × 5 × 9 A = 12 × 4 × 9

Vlada [557]

Answer:

I believe it's A=5 times 9 but since the triangle is special (3-4-5), it could be 12 times 5. Hope this kinda help :)

5 0

3 years ago

If Natasha picks bows at random, what is the probability that the first two gifts she wraps will have a Gold bow?

Allushta [10]

Answer:

1/5

Step-by-step explanation:

5/25

1/5

4 0

3 years ago

This number is 5028 less than 2.845

Ymorist [56]

2.845-5,028=x
x= -5,025.155

6 0

3 years ago

Read 2 more answers