Answer:
<u>B. spin a spinner with 4 equal sections two times.</u>
Step-by-step explanation:
There are 4 boys and 2 girls in the Science Club.
2 members will give the demonstration at the science fair.
And at least one of the demonstrators will be a girl.
So, it is convenient to choose a simulation method with 4 outcomes.
The suitable simulation is spin a spinner with 4 equal sections two times.
The first time of the spinner we will choose a boy, each section from the four section will represent one boy.
The second time, we will choose a girl, each 2 section from the four sections will represent one girl.
<u>The answer is option B. spin a spinner with 4 equal sections two times.</u>
We can Notice that the Angles in the Given Triangle ABC are Equal
The Given Triangle ABC is an Equilateral Triangle
We know that an Equilateral Triangle has Equal Sides
let us take any two sides
AC = BC
4x - 30 = 2x + 20
2x = 50
x = 25
<u>Verification :</u>
we got x = 25
AC = 4x - 30 = 4(25) - 30 = 100 - 30 = 70
BC = 2x + 20 = 2(25) + 20 = 50 + 20 = 70
AB = 3x - 5 = 3(25) - 5 = 75 - 5 = 70
We Got All sides Equal to 70
So, x = 25 is correct value
Answer:
80/121
Step-by-step explanation:
For simplicity,
Probabilities of getting a red, a blue or a green in a single spin are, respectively, 4/11, 4/11 & 3/11.
Therefore, probabilities of getting 2 reds, 2 blues or 2 greens in 2 spins are, 16/121, 16/121 & 9/121 respectively.
Then, total probability of getting same colour both times would be 16/121 + 16/121 + 9/121 = 41/121.
Any other option would result in 2 different colours. Thus, the probability of getting two different colours in 2 spins = 1 - 41/121 = 80/121.
Answer:
if b>0
then A<B
Step-by-step explanation:
Of means multiply and is means equals
12.5% *A = b
.125A = b
Divide by .125
.125A/.125 = b/.125
A = 8b
30% *B = 3b
.30B = 3b
Divide by .3
.3B/.3 = 3b/.3
B = 10b
8b vs 10 b
if b>0
then A<B
Answer:
divison
Step-by-step explanation:
3x=81
3x/3=81/3