3 years ago

There are 4 boys and girls in the Science Club. The members draw stras to determine which to

Mathematics

1 answer:

Zepler [3.9K]3 years ago

8 0

Answer:

The answer is B.spin a spinner with 4 equal sections two times

Step-by-step explanation:

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raketka [301]

25 lb > 384 oz because 25 pounds is 400 ounces.

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3 years ago

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Without solving determine the number of real solutions for each quadratic equation

seropon [69]

Answer:

b^2-4b+3=0

b²-3x-b+3=0

b(b-3)-1(b-3)=0

(b-3)(b-1)=0

either

b=3 or b=1

2n^2 + 7 = -4n + 5

2n²+4n+7-5=0

2n²+4n+2=0

2(n²+2n+1)=0

(n+1)²=0/2

:.n=-1

x - 3x^2 = 5+ 2x - x^2

0=5+ 2x - x^2-x +3x^2

0=5+x+2x²

2x²+x+5=0

comparing above equation with ax²+bx +c we get

a=2

b=1

c=5

x={-b±√(b²-4ac)}/2a ={-1±√(1²-4×2×5)}/2×1

={-1±√-39}/2

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2 years ago

Evaluate: (5−5×8−10)−5

Brums [2.3K]

Answer:

-50

Step-by-step explanation:

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3 years ago

A survey showed that 30% of students bring their lunch to school. The survey polled 300 students. How many of the 300 students d

Karolina [17]

Let's first find how many students bring their lunch to school. This is 30% of 300. To find this value, convert the percentage to a fraction (or decimal) and multiply:

$30\% \,\, \textrm{of} \,\,300 = \dfrac{3}{10} \cdot 300 = \dfrac{900}{10} = 90$

Since 90 students bring their lunch to school, we can say 210 students do not bring their lunch to school. (300 - 90 = 210)

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3 years ago

Goran rented a truck for one day. There was a base fee of $19.99 , and there was an additional charge of 94 cents for each mile

nekit [7.7K]

138.43-19.99=118.44
118.44/0.94=126.

Hope this helps :)

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3 years ago