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kkurt [141]
3 years ago
6

Dorothy is a fourth-grade teacher at an all-girls school. She calls on one of her students to give a presentation on the differe

nt parts of a plant. What is the likelihood that she will choose a girl to make the presentation?
Mathematics
2 answers:
mamaluj [8]3 years ago
5 0

Answer:

idk i will try

Step-by-step explanation:

she mostlikely will. her whole class is girls.

valina [46]3 years ago
3 0

Answer:

100%

Step-by-step explanation:

Dorothy is attending an all girls school. Therefore there is only girls attending.

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madam [21]

The ball will hit the ground at 2 seconds.

Step-by-step explanation:

Given that,

The path of the ball = h(x)=−2x2+1x+6

Here,

x is the time while h is the height of ball.

When the ball will hit the ground, the height will become zero. Therefore,

h(x)=−2x2+1x+6

0 =−2x2+1x+6

or

2x2 -1x - 6 = 0

This is a quadratic equation, hence by applying quadratic equation formula:

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

here,

a = 2

b = -1

c = -6

Putting these values in formula, we get

x = \frac{-(-1) +- \sqrt{-1^{2} - 4.2.-6 }   }{2.2}

x = \frac{1 +- \sqrt{1 + 48 }   }{4}

x = \frac{1 +- \sqrt{49 }   }{4}

x = \frac{1 +- 7   }{4}

x = 2, -3/2

As the time cannot be negative. Therefore, the ball will hit the ground at 2 seconds.

6 0
3 years ago
Read 2 more answers
Simplify (2 {sqrt 5}+ 3 {sqrt 7})^2. Show your work. Justify each step.
White raven [17]
(2√5 + 3(√7))^2
(2√5 + 3(√7))(2√5 + 3(√7))
4*5 + 6√35 + 6√35 + 9*7
20 + 12√35 + 63
20 + 63 + 12√35
83 + 12√35
4 0
3 years ago
Katrin is making a poster for school elections. She draws a line 20.4 cm long across the poster board. She starts at one end of
nevsk [136]
Well, to find out how many times 20.4 can split into 3.4, you need to divide 20.4÷3.4 and you will get 6, and Katrin (K-A-T-R-I-N) is 6 letters, so you have enough room, the answer is yes.
3 0
3 years ago
A milk carton is 30cm long and 10cm wide and 50cm high. How much milk can it hold?
Nostrana [21]
Volume- LxWxH
30x10x50= 15000
3 0
3 years ago
Please help and quickly please and 20 points with brainelest <br><br><br><br><br> Thank you
uysha [10]

Answer: The answer is B. 34

Step-by-step explanation:

3(12−9)+5^2

=(3)(3)+5^2

=9+5^2

=9+25

=34

5 0
2 years ago
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