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irakobra [83]
3 years ago
6

How many, and what type of, solutions does 4x² + 12x + 9 = 0 have?

Mathematics
2 answers:
Gemiola [76]3 years ago
7 0
1 rational solution

4x² + 12x + 9 = 0
(2x+3)²=0
2x + 3 =0
2x +3 -3 = 0-3
2x = -3
2x/x = -3/2
x = -3/2
damaskus [11]3 years ago
3 0

The answer is 1 rational solution. :) Took the test and got it correct.

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Identify the LHS and RHS of the following equation, 3m -7 = 15​
EastWind [94]

Answer:

3m-7=15

3m=15+7

3m=22

m=22/3

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What is 162,810.75 rounded to the nearest whole number?
Maurinko [17]

Answer:

162,811

Step-by-step explanation:

4 0
3 years ago
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A store sells tents,sleeping bags,and campstools.A customer buys a tent, 2 sleeping bags, and 3 campstools for 212$.the price of
igor_vitrenko [27]

The cost of each campstools, tent and sleeping bag is $20, $100 and $26

let

tent = 1

sleeping bags = 2

campstools = 3

Total cost = $212

tent = t

sleeping bags = s

campstools = c

If

t = 5c

s = c + 6

Total = t + 2s + 3c

212 = 5c + 2(c + 6) + 3c

212 = 5c + 2c + 12 + 3c

212 = 10c + 12

212 - 12 = 10c

200 = 10c

c = 200/10

c = 20

t = 5c

= 5 × 20

= 100

s = c + 6

= 20 + 6

= 26

Therefore, the cost of each campstools, tent and sleeping bag is $20, $100 and $26

Learn more about equation:

brainly.com/question/4916384

4 0
3 years ago
94. Birth Rate of Unmarried Women In the United States, the birth rate B of unmarried women (births per 1000 unmarried women) fo
OLga [1]

Using concepts of quadratic equation, we have that:

a) The age of unmarried women with the highest birth rate 29 years.

b) The highest birth rate of unmarried women is of 65 births per 1000 unmarried women.

c) B(40) = 25.43, which means that the birth rate of unmarried women of age 40 is of 25.43 births per 1000 unmarried women.

The birth-rate for women of age a is given by:

B(a) = -0.33a^2 + 19.17a - 213.37

Which is a quadratic equation with coefficients a = -0.33, b = 19.17, c = -213.37

Item a:

The age with the highest value is the a-value for the vertex, which is:

a_V = -\frac{b}{2a} = -\frac{19.17}{2(-0.33)} = 29

The age of unmarried women with the highest birth rate 29 years.

Item b:

The rate is B(29), which is:

B(29) = -0.33(29)^2 + 19.17(29) - 213.37 = 65

The highest birth rate of unmarried women is of 65 births per 1000 unmarried women.

Item c:

B(40) = -0.33(40)^2 + 19.17(40) - 213.37 = 25.43

B(40) = 25.43, which means that the birth rate of unmarried women of age 40 is of 25.43 births per 1000 unmarried women.

A similar problem is given at brainly.com/question/24626341

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3 years ago
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tangare [24]

Answer:

22222

Step-by-step explanation

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