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3 years ago

Please answer I’ll rate brainlyest

Mathematics

2 answers:

bija089 [108]3 years ago

3 0

Answer:

1287

Step-by-step explanation:

The answer is 1287 because we use the combintions formula.

13!/((13-5)!(5!)) = 1287

mestny [16]3 years ago

3 0

Answer:

The correct answer is first option 13C₅ = 1287

Step-by-step explanation:

Formula:-

nCr = (n!)/r!(n - r)!

<u>To find the value of 8=13C₅</u>

By the formula we can write,

13C5 = 13!/5!(13 - 5)!

= 13!/5!8!

= (13 * 12 * 11 * 10 * 9 *8!)5!8!

= 13 * 12 * 11 * 10 * 9 )/(1 * 2 * 3 * 4 * 5)

= 1287

Therefore the correct answer is first option 13C₅ = 1287

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Name two pairs of supplementary angles in the diagram.

Ipatiy [6.2K]

Answer:

Step-by-step explanation:

α + β = 180°

∠BFE and ∠FBC

∠CEF and ∠BCE

6 0

3 years ago

Building A is 400 feet tall and Building B is 300 feet tall. Johnny is standing in between the two building. The angle of elevat

Free_Kalibri [48]

Answer:

389 feets apart

Step-by-step explanation:

Given that:

Building A

Height = 400feets

Angle of elevation = 70°

Building B:

Height = 300 feets

Angle of elevation = 52°

Distance from the foot of building A to where Jonny is standing = x (see attached picture)

Using trigonometry :

Tanθ = opposite / Adjacent

Tan 70 = 400/ x

2.7474774x = 400

x = 145.58809 feets

Distance from the foot of building B to where Jonny is standing = y (see attached picture)

Using trigonometry :

Tanθ = opposite / Adjacent

Tan 52 = 300/ y

1.2799416y = 300

y = 145.59

y = 234.38568 feets

x + y = distance between the two buildings

(145.58809 + 234.38568) feets

= 379.97377

= 380 feets apart

5 0

3 years ago

Y+4=2(x-1) what would it be from point-slope form to slope-intercept form

Lilit [14]

Answer:

y=2x-6

Step-by-step explanation:

y+4=2(x-1)

Subtract 4 to both sides of the equation:

y+4-4=2(x-1)-4

y=2(x-1)-4

Distribute the 2:

y=2x-2-4

y=2x-6

Where 2 is the slope and -6 is the y - intercept.

4 0

4 years ago

Joey has a pool in his backyard and he wants to build a fence around the entire area joeys backyard is 12 meters wide and 14 met

Paul [167]

One side of the back yard is usually the back side of the house.
But we won't worry about that ... we'll just go ahead and fence all
four sides, like you seem to have said.

Any rectangle has two sides that are the length and two sides that are the width.
So the distance around the back yard is

(14 + 14) + (12 + 12) = 52 meters.

(That's called the "perimeter" of the yard.)

If every meter of fence costs $9.00 , then 52 meters of fence will cost

(52) times ($9.00) = $468 . plus tax.

5 0

3 years ago

Could someone solve these? Will give brainiest.

N76 [4]

Answer:

-9 33 3 -9 -14

Step-by-step explanation:

Do you need step by step if so tell me

4 0

3 years ago

Read 2 more answers