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3 years ago

I need help with this please?

1 answer:

6 0

A. since they choose 4 people to form the committee and all the people chosen are teachers
from 5 teacher, we choose 4, 5C4
and
from 20 parents, we choose none, 20C0
5C4*20C0= 5

b. from 5 teacher choose 2, 5C2
and
from 20 parents choose 2, 20C2

5C2 * 20C2=1900

c.all parents
from 5 teachers choose 0, 5C0
and
from 20 parents choose 4, 20C4

5C0 * 20C4= 4845

d. from 5 teacher choose 1, 5C1
and
from 20 parents choose 3, 20C3

5C1 * 20C3= 5700

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HELP ITS REALLY URGENT

SSSSS [86.1K]

Answer/Step-by-step explanation:

a. m<h = x°

Two angles to use in finding x are <h and 55°

Angle pair formed: linear pair angles

b. x° + 55° = 180° (linear pair)

Subtract 55° from each side

x + 55 - 55 = 180 - 55

x = 125°

c. Given: m<n = y°

Two angles to use in solving for y are: <h and <n

Angle pair formed: alternate exterior angles

d. m<n = y° (given)

m<n = x° = 125° (as solved in 2b)

Therefore:

y = x (alternate exterior angles are congruent)

thus:

y = 125° (substitution)

5 0

3 years ago

Please help me with this

alekssr [168]

Answer: $30^{\circ}$

Step-by-step explanation:

Given

$\sin 60=\dfrac{\sqrt{3}}{2}$

For

$\cos \theta =\dfrac{\sqrt{3}}{2}$

It indicates $\theta$ lies in I st quadrant. The value of cosine $30^{\circ}$ is equal to $\dfrac{\sqrt{3}}{2}$

Therefore, $\theta$ must be $30^{\circ}$

3 0

3 years ago

7. Which function has -5 as its only zero?

Artemon [7]

Step-by-step explanation:

B. . f (x) = x (x+5 )

please mark as brilliant

5 0

3 years ago

Read 2 more answers

What is the value of X

klemol [59]

Answer:

x ≈ 23.31

Step-by-step explanation:

We can use the law of cosines because we know 2 sides and 1 angle.

The general formula for the law of cosines if the triangle sides are a, b,c and α is the angle between sides a and b. c is the missing side.

$c = \sqrt{a^{2} +b^{2} -2*a*b* cos \alpha }$

In our problem the law of cosines is

x = $\sqrt{21^{2} +13^{2} - 2*21*13 *cos 83}$

x ≈ 23.31

5 0

3 years ago

A canvas wind shelter like the one at right is to be built for use along parts of the Guadalupe River. It is to have a back, two

ipn [44]

A = 2 a² + 2 a b
2 a² + 2 a b = 147/2
a² + a b = 36.75
a b = 36.75 - a²
b = ( 36.75 - a² ) / a
V = a² * b
V = a² * ( 36.75 - a² ) / a
V = 36.75 a - a³ ( maximum of the volume is when V` = 0 )
V` = 36.75 - 3 a²
36.75 - 3 a² = 0
3 a² = 36.75
a² = 36.75 : 3
a² = 12.25
a =√12.25
a = 3.5 ft
b = 24.5 / 3.5 = 7 ft.
Answer: The depth of the shelter for which the space inside is maximized is 3.5 ft.

7 0

3 years ago