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topjm [15]
3 years ago
12

If EC$2.50 is equivalent to US$1.00, then EC$20.00 in US dollars is?

Mathematics
1 answer:
vovikov84 [41]3 years ago
6 0

Answer:

We use ratio and proportion

If EC$ 2.50 = US$ 1.00

Then EC$ 20.00 = US$ 20 × 1 / 2.50

= US$ 8.00

Hope this helps

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Please hurry thank you
emmasim [6.3K]

Answer:

7.9 ft


Step-by-step explanation:

The hypotenuse is the side opposite of the right angle, hence the hypotenuse for this triangle is 11 ft.

Side x is adjacent to the angle given. So we need adjacent and we have hypotenuse. Which trigonometric ratio relates adjacent and hypotenuse? It is COSINE.

<em>Thus, we can write:</em>

cos(A)=\frac{adjacent}{hypotenuse}\\cos(44)=\frac{x}{11}

<em>Cross multiplying, we can solve for x:</em>

cos(44)=\frac{x}{11}\\x=cos(44)*11\\x=7.91


Rounding to nearest tenth, we have x=7.9 ft.

6 0
4 years ago
Solve 4x-2(x+1)=3x+10
shusha [124]

4x-2(x+1)=3x+10

4x - 2x - 2 = 3x + 10

2x - 2 = 3x + 10

3x - 2x = -2 - 10

x = - 12

Answer is

-12

4 0
4 years ago
Read 2 more answers
What is the percent of increase for a population that changed from 438,000 to 561,000?
BARSIC [14]

New number - original number

561,000 - 438,000 = 123,000.

Increased number divided by the original number

123,000 ÷ 438,000 = 0.28

Multiply by 100

0.28 x 100 = 28%

The percentage increase would be 28%

4 0
3 years ago
Sum of (x+5) and (2x+3)
olga55 [171]

Answer:

3x+8

Step-by-step explanation:

First, we can write the sum into a <em>mathematical expression</em>:

<em>The sum of (x+5) and (2x+3)</em>

<em />

<u>(x+5)+(2x+3)</u>

<u />

<em>However, we do not need the parenthesis. It is unnecesarry here as we are just adding the two parts:</em>

<em />

<u>x+5+2x+3</u>

<u />

Using <em>commutative property</em>, we can rearrange the symbols so that the x's are with each other and the numbers are with each other:

<u>x+2x+5+3</u>

<u />

Now we can <em>simplify</em> the expression:

<u>3x+8</u>

<u />

Hope this helped :)

5 0
3 years ago
What is the least number of plums that can be shared equally among 6, 9 or 12 children?
Luba_88 [7]

Answer:

in order to find the least number of plums that can be shared, we have to find the greatest common factor of 6 ,9 and 12. the greatest common factor of 6 , 9 and 12 is 3. so if we have three plums. for 6 children , we have 3 plums.

Step-by-step explanation:

:)

5 0
3 years ago
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