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2 years ago

A science class has

1 answer:

8 0

The probability that the teacher selects both boys from a seventh grader and eighth grader.
first calculate the probility that it is boy in each grade
7th
x = 7 / ( 7 + 3) = 7 / 10

8th
y = 2 / (2 + 2) = 1 / 2

so the probability
P = ( 7 / 10 ) ( 1 / 2 )
P = 0.35

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Factor out the coefficient of the variable. 1/3b-1/3

BartSMP [9]

1/3b-1/3
factor out 1/3
1/3(b-1)

hope this helps

5 0

3 years ago

√20/125 answer in simpleset form<br>

grigory [225]

Answer:

.4!

Step-by-step explanation:

first you divide 20 by 125 and get .16

then you take the square root of .16 and get .4

4 0

2 years ago

Question 2 Not yet answered Points out of 2

nata0808 [166]

Answer:

Trapezoid

Step-by-step explanation:

perpendicular: They are perpendicular due to the fact they cross at right angles to each other. Another true instance of perpendicular lines we will see in nature is a football field. All four corners of a football field are perpendicular to every other.

In the trapezoid attached there aren't any perpendicular sides. A and B are both obtuse angles in this diagram, and C and D are both acute angles. However, now not all trapezoids appear like this. ... Definition B: A trapezoid is any quadrilateral with at the least one pair of parallel sides.

please mark me brainliest!

3 0

2 years ago

Will mark as brainliest<br><br> -3 < 0<br><br><br> True False

JulsSmile [24]

Answer:

true

Step-by-step explanation

a negative number is less than a positive. so that means that 0 is greater than -3.

5 0

2 years ago

Read 2 more answers

Use the Law of Sines to find the length of AC

ddd [48]

<h3>Answer: 30.78181 meters</h3>

The value is approximate. Round that however you need to.

========================================================

Explanation:

lowercase a = side opposite angle uppercase A
lowercase b = side opposite angle uppercase B
b = AC

Using the law of sines, we can say:

a/sin(A) = b/sin(B)

45/sin(30) = b/sin(20)

b/sin(20) = 45/sin(30)

b = sin(20)*45/sin(30)

b = 30.78181 approximately

You'll need to make sure your calculator is in degree mode.

3 0

2 years ago