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4 years ago

3. Alexis and her little sister began biking at the same time in the same direction from Grinnell on

Mathematics

1 answer:

AlladinOne [14]4 years ago

5 0

Answer:

They will be 10 miles apart on the 4th hour

Step-by-step explanation:

4hr=60 (15miles)

4hr=48 (12miles)

-48

12 more than 10 hours apart

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If one sheet of paper is 2/5 cm thick, how thick is a pad containing 160 sheets?

kvv77 [185]

2 160 = 320
5 X 1 5

Then you go 320 divided by 5 which is 64cm thick.

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3 years ago

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List the markup and retail price of each item. Round to two decimal places when necessary. A shirt item price is $33.75 and the

kifflom [539]

Answer:

markup price = $25.31

retail price = $59.06

Step-by-step explanation:

Markup price is 75% OF 33.75

Retail price is original price (33.75) PLUS the markup price (to be found)

Firstly, converting a percentage to a decimal is simple. We simply divide by 100. So:

75% = 75/100 = 0.75

Now, to find markup, we multiply:

33.75 * 0.75 = $25.31

Now, the retail price is SUM of original and markup, that would be:

retail price = 33.75 + 25.31 = $59.06

Thus,

markup price = $25.31

retail price = $59.06

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4 years ago

Jake, Sara, and Cole are selling tickets for the school drama show. Sara sells half as many tickets as Jake. Cole sells 6 more t

3241004551 [841]

We let x be the number of tickets that Sara and Jake sold individually. With this representation, the number of tickets sold by Cole is equal to 2x+6.

(a) x + x + (2x + 6) = 538
The value of x from the generated equation is 133.

(b) Sara sold a total of 133 tickets.

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4 years ago

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Anna buys groceries for her family. Hamburger meat is $3.38 per pound sweet potatoes are $0.79 each and hamburger rolls are are

Anestetic [448]

Anna will pay $16.39 for all of the groceries :)

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3 years ago

Solve the radical equation. square root 6n-11= n – 3 Which solution is extraneous? A.)2

Anvisha [2.4K]

ANSWER

D) 10

EXPLANATION

We want to solve the radical equation,

$\sqrt{6n - 11} = n - 3$

Square both sides,

$6n - 11 = (n - 3) ^{2}$

Expand brackets on right hand side,

$6n - 11 = {n}^{2} - 6n + 9$

Rewrite in general quadratic equation form,

${n}^{2} - 12n + 20 = 0$

Factor to obtain,

$(n - 2)(n - 10) = 0$

Apply the zero product principle to get,

$n = 2 \: or \: n = 10$

We put n=2 into the equation to get,

$\sqrt{6(2) - 11} = 2 - 3$

$1 = - 1$

This statement is false, hence 2 is an extraneous solution

We put n=10, to get

$\sqrt{6(10) - 11} = 10 - 3$

$\sqrt{49} = 7$

$7 = 7$

This is true, hence the only solution is
$n = 10$

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4 years ago

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