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eimsori [14]
3 years ago
10

Show how to solve this two step problem. My item is 40% off. The original price is X. Explain the two one step equations you wou

ld use to solve this (to find the sales price). a. Now, I figured out that the original cost was $145, what is the real sales price?
Mathematics
1 answer:
fredd [130]3 years ago
4 0
40% of (times) X
4/10 of (times) X or 2/5 or .4
145 (times) .4 which is 58
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ANSWER FAST ITS URGENT
Vlad1618 [11]

Answer:

9) 6.3 units

11) n=6√2 and m=12,

10) m=6√3, n=6

12) 330.6 ft

Step-by-step explanation:

1) The Pythagoras Theorem says that, the square of the hypotenuse is the sum of the squares of the two shorter legs.

Let the missing side, which is the hypotenuse be x.

Then

{x}^{2}  =  {2}^{2}  +  {6}^{2}

{x}^{2}  = 4 + 36

{x}^{2}  = 40

x =  \sqrt{40}

x = 6.3

The missing side is 6.3 units to the nearest tenth.

2) This is an isosceles right triangle.

This implies that, the two legs are equal.

n = 6 \sqrt{2}

The hypotenuse can be found using Pythagoras Theorem.

{m}^{2}  =  {(6 \sqrt{2} )}^{2}  +  {(6 \sqrt{2} )}^{2}

{m}^{2}  = 36(4)

m =  \sqrt{36 \times 4}  = 6 \times 2 = 12

3) The side lengths of 30°-60°-90° are in the ratio, 2x,x√3,x

From the diagram, the hypotenuse is 12, therefore the other two legs are

n =  \frac{1}{2} (12) = 6

and

m = 6 \sqrt{3}

4) The height of the monument is 115 feet, the hypotenuse is 350.

By Pythagoras Theorem,

{x}^{2}  +  {115}^{2}  =  {350}^{2}

{x}^{2}  =  {350}^{2}   -  {115}^{2}

{x}^{2}  = 109275

x =  \sqrt{109275}  = 330.6 ft

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4 years ago
Please help me ASAP I’ll mark Brainly
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Mark me Brainly answer 2/5
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Which of the following are solutions to x-1 = 5x + 2 ? Check all that apply.
Ad libitum [116K]

Answer:

The answer is-3/4

Step-by-step explanation:

#Hope it helps uh.....

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3 years ago
Suppose you have 30CD's. You know that you have 11 more CD's than your friend. Write and solve an equation to find the number of
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Answer:

30 - 11 = 19        19 CD's

Step-by-step explanation:


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