1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
eduard
3 years ago
14

There are 20 children in the cast of a class play, and 8 of the children are boys. Of the boys, 4 have a speaking part in the pl

ay, and of the girls, 8 do not have a speaking part in the play. If a child from the cast of the play is chosen at random, what is the probability that the child has a speaking part?
a)2/5
b)1/2
c)3/5
d)3/4
Mathematics
2 answers:
denpristay [2]3 years ago
4 0

Answer:

A0 2/5

Step-by-step explanation:

First, find out how many girls there are by subtracting 8 (boys) from 20 (total). This means there are 12 girls. Since 8 girls aren't speaking, 4 are. 4+4=8. 8 out of the 20 children are speaking/ 8/20 simplified is 2/5

nikdorinn [45]3 years ago
3 0

Answer: The answer is option A

Step-by-step explanation: the probability that a boy has a speaking part is 4/20

You might be interested in
GOOD REVIEW IF BOTH OF THE ANSWERS ARE CORRECT
Over [174]

Answer for 1:

I don't know the actual answer, but for Forms, you can press ctrl + U and find the answers in the code

Answer for 2:

x = 28

Step-by-step explanation:

Since the overall angle is 90°, and we already have 33, we subtract 33 from 90

90 - 33 = 57

So we have to fill in the other 57°

2(28) = 56

56 + 1 = 57

So the answer is x = 28

8 0
3 years ago
Find the directional derivative of the function at the given point in the direction of the vector v. f(x, y, z) = xyz , (3, 3, 9
Anna [14]

The derivative of f(x,y,z) in the direction of a vector \mathbf u is

\nabla_{\mathbf u}f=\nabla f\cdot\dfrac{\mathbf u}{\|\mathbf u\|}

With f(x,y,z)=xyz, we get

\nabla f=(yz,xz,xy)

and \mathbf u=(-1,-2,2),

\|\mathbf u\|=\sqrt{(-1)^2+(-2)^2+2^2}=3

Then

\nabla_{(-1,-2,2)}f(3,3,9)=(27,27,9)\cdot\dfrac{(-1,-2,2)}3=-21

8 0
3 years ago
I’m confused can someone get me the answer
siniylev [52]
Angle OPM and Angle LMK

When angles are corresponding, they're essentially on the same side. It's sort of hard to explain, so I'll attach a drawing. The one on the left with the check mark is a corresponding angle, and the one on the right with the X is a same-side angle. Essentially, corresponding angles are on the same side and are also equal, unlike same-side angles, which are supplementary angles.

Let me know if you don't understand my explanation.
-T.B.
4 0
4 years ago
Avanelle is walking around a track that is 400 yards long. She has walked around the track 7 times so far. How many more yards d
adelina 88 [10]

Answer:

2 miles = 3,520 yards

first we need to find how many yards she's walked already :

400×5=2,000 yards

now subtract :

3,520-2,000= 1,520 yards

Keisha needs to walk 1,520 more yards to complete 2 miles

hope this helped

Step-by-step explanation:

5 0
2 years ago
Lewis drove 14 miles north and 48 miles east. On his return trip he drove home diagonally. How much shorter was the return trip?
Lina20 [59]
12 miles, Because using the Pythagorean theorem, A squared plus B squared = C squared. So 14 squared +48 squared equals 2500. The square root of 2500 is 50, so the total of 14+48 is 62-50 is 12 miles shorter
6 0
3 years ago
Other questions:
  • If the length of segment ad is 10 and the length of segment ac is 4y - 40, what are the values for y, segment ac, and segment dc
    8·1 answer
  • 40 Points. Please help, algebra involved. Been stuck for so long!
    10·1 answer
  • Rubidium has two naturally occurring isotopes: Rb-85 with mass 84.9118 amu and a natural abundance of 72.17 %, and Rb-87 with ma
    7·1 answer
  • Find the function value sin120°
    8·1 answer
  • I don’t know how to do this. Ignore my work it’s probably wrong. Please help.
    10·1 answer
  • Priya’s family exchanged 250 dollars for 4,250 pesos. Priya bought a sweater for 510 pesos. How many dollars did the sweater cos
    7·2 answers
  • The table below shows the account balances for four different customer accounts at the City
    14·2 answers
  • [tex]40-23\frac{6}{7}
    13·2 answers
  • Can you help me Thank you
    14·2 answers
  • In the triangle below, x= degree. Round to the nearest tenth
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!