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andrezito [222]
3 years ago
15

78 students are going to be divided into 24 groups and the number of each group member will be either 4 or 2. How many groups of

2 will there be ? Let x be the number of groups of 2 and let y be the number of groups of 4
Mathematics
1 answer:
True [87]3 years ago
7 0
36 and 45 that will be your answer
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Find the value for x. Round your answer to the nearest hundredth. Area of the triangle = 8 ft^2​
zmey [24]

Answer:

x = 3.51

Step-by-step explanation:

Since, formula to determine the area f a triangle is,

Area = \frac{1}{2}(\text{Base})(\text{Height})

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16 = x(3x - 7) + 1(3x - 7)

16 = 3x² - 7x + 3x - 7

16 = 3x² - 4x - 7

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By quadratic formula,

x = \frac{-b\pm \sqrt{b^{2}-4ac}}{2a}

x = \frac{4\pm \sqrt{(-4)^{2}-4(3)(-23)}}{2(3)}

x = \frac{4\pm \sqrt{292}}{6}

x = \frac{4\pm 17.09}{6}

x = 3.51, -2.18

But the length of sides can't be negative.

Therefore, x = 3.51 will be the answer.

8 0
2 years ago
For a field trip, the school bought 23 sandwiches for $4.60 each and 5 bags of chips for $1.25 each. How much did the school spe
Verizon [17]

Answer:

112.05

Step-by-step explanation:

i did 23 times 4.60 then 5 times 1.25 then add the answers

hope this helps

-mercury

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