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DIA [1.3K]
3 years ago
12

(I need to turn this in tomorrow, please help)

Mathematics
1 answer:
zaharov [31]3 years ago
6 0
2,4 is the answer for the table. the answer for the graph is 1/4 maybe?? i’m not to sure on the graph
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A brother and a sister are in the same math class. there are 8 boys and 20 girls in the class. one boy and one girl are randomly
Pavlova-9 [17]
<h2>the answer i thinkk is 2/20 because since there ae 20 children, then the brother and sister each have a 1% chance, hope this helped!</h2>
7 0
4 years ago
382 3/10 - 191 87/100= math difficulties please answer this question
prohojiy [21]
3/10 = .3 and 87/100 = .87
382.3 - 191.87= 190.43
so the answer is 190.43

Hope this helped!! :))
7 0
4 years ago
What are the roots of the quadratic equation 2x2+7x+4=0? Select all that apply.
skad [1K]

Answer:

option A and B

x=\frac{-7+\sqrt{17}} {4}

and

x=\frac{-7-\sqrt{17}} {4}

Step-by-step explanation:

we have

2x^2+7x+4=0

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

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

in this problem we have

2x^2+7x+4=0

so

a=2\\b=7\\c=4

substitute in the formula

x=\frac{-7\pm\sqrt{7^{2}-4(2)(4)}} {2(2)}

x=\frac{-7\pm\sqrt{17}} {4}

so

x=\frac{-7+\sqrt{17}} {4}

and

x=\frac{-7-\sqrt{17}} {4}

7 0
3 years ago
The work of a student to solve a set of equations is shown below: m=8+2n; 4m=4+4n. Solve by elimination
nadya68 [22]

Answer:

Step-by-step explanation:

4(8+2n) = 4 + 4n

32 + 8n = 4+4n

4n = -28

n = -7

4 0
3 years ago
What is the probability of getting two heads and 1 tail
aleksklad [387]
There is a 1/3 chance. Because there are 3 coins
8 0
3 years ago
Read 2 more answers
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