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Mademuasel [1]
3 years ago
7

If the population of a certain city increased 25% in two years, the new population was what percent of the old?

Mathematics
1 answer:
disa [49]3 years ago
7 0

Answer:

125%

Step-by-step explanation:

This because if in origin the city was made up for example by 100,000 people, that was the 100% of the city. Now you add the 25% in two years and the city will be made by 125,000 people. So <em>100%+25%=125%</em><em>.</em><em> </em>

I think it's right

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There are 12 coins ; dimes and quarters. The number of dimes is 2 more than the number of quarters.
galben [10]

Answer:

D.  $1.95

F.  $3

Step-by-step explanation:

dimes:  x + 2

quarters:  x

x + 2 + x = 12

2x + 2 = 12

2x = 10

x = 5

dimes:  x + 2 = 5 + 2 = 7

quarters:  x = 5

Total value: (7 * .10) + (5 * .25) = $1.95

_____

dimes:  x

quarters:  2x

x + 2x = 15

3x = 15

x = 5

dimes:  x = 5

quarters:  2x = 2(5) = 10

Total value: (5 * .10) + (10 * .25) = $3

5 0
2 years ago
I also need help with this one, simplifying this radical expression. This ones weird.
Darya [45]

Answer:

1

Step-by-step explanation:

Factorise numerators/ denominators where possible

3x² - 4x + 1 = (x - 1)(3x - 1)

x² - 1 ← is a difference of squares and factors as

x² - 1 = (x - 1)(x + 1)

Expressing the product in factored form

\frac{(x-1)(3x-1)}{(x-1)(x+1)} × \frac{x+1}{3x-1}

Cancel common factors on numerator/denominator, that is

Cancel (x - 1) , (x + 1) and (3x - 1), leaving the simplified form 1

7 0
2 years ago
Read 2 more answers
I need to find angle BAC
igomit [66]

Answer:

m<BAC = 60°

Step-by-step explanation:

Theorem:

In a triangle, the measure of an exterior angle equals the sum of the measures of its remote interior angles.

m<ACD = m<A + m<B

130° = m<A + 70°

m<A = 60°

m<BAC = 60°

8 0
2 years ago
What is the answer is think it is a but I don't know. plz help.
Papessa [141]
Hi there!

The answer is actually D.

Since both the numerator and the denominator multiplied by 3 is 3/9, the answer would be 9.

-1 × 3 = -3
-3 × 3 = -9

Since a negative number times a positive number is a negative number, the correct answer would be D.

Hope this helps!
7 0
2 years ago
What percent of 2/7 is 1/7
svlad2 [7]

Answer:

50%.

Step-by-step explanation:

1/7 / 2/7

= 1/7 * 7/2

= 7/14

= 1/2.

= 50%.

3 0
3 years ago
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