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Lady_Fox [76]
3 years ago
9

Solve for r. This is for combinations and permutations.

Mathematics
1 answer:
Sladkaya [172]3 years ago
5 0

Answer:

I'm guessing it could be B or D...I'm not 100% sure.

Step-by-step explanation:

It could be B because 5 can divide 45

It could be D because they are both even numbers.

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3 years ago
Will What will -3 be in this problem if it replaced the -x?<br> Y= -x+6
Fiesta28 [93]

Answer:

9

Step-by-step explanation:

8 0
3 years ago
Find all values of x that make the triangles congruent. Explain your reasoning.
RSB [31]

Answer:

x = \frac{4}{5},5

Step-by-step explanation:

If both the triangles ΔABC and ΔBCD are congruent,

Corresponding sides of both the triangles will be proportional.

\frac{AB}{BD}=\frac{AC}{CD}

\frac{5x}{3x+10}=\frac{5x-2}{4x+3}

5x(4x + 3) = (5x - 2)(3x + 10)

20x² + 15x = 15x² + 50x - 6x - 20

20x² + 15x = 15x² + 44x - 20

20x² - 15x² = 44x - 15x - 20

5x² = 29x - 20

5x² - 29x + 20 = 0

5x² - 25x - 4x + 20 = 0

5x(x - 5) - 4(x - 5) = 0

(5x - 4)(x - 5) = 0

x=\frac{4}{5},5

3 0
3 years ago
PLEASE HELP I NEED THIS IS DUE IN AN HOUR!!! 40 POINTS!!!Sherelle and Venita’s grandmother said that one of the bags has a coin
nikdorinn [45]

Answer:

I dont know about Sherelle, but Venita's grandmother can give a reason that as she is from older age, most probably, the coin can be in her bag...... And the coin, according to me will be in grandmother's bag....

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7 0
2 years ago
In the right hexagonal pyramid below. The hexagonal base is regular and has sides that are 8 units long. The altitude of the pyr
Korvikt [17]

Answer:

The volume is <em>997.62 cubic units.</em>.

Step-by-step explanation:

We are given the following details:

The pyramid has a regular hexagonal base i.e. each side of hexagon is equal.

Side of hexagonal base, a = 8 units

Altitude of pyramid, h = 18 units

We have to find the volume of pyramid.

Formula:

V = \dfrac{1}{3} \times B \times h

Where, B is the area of base of pyramid.

h is the height/altitude of pyramid

To calculate B:

Here, base is a hexagon with side 8 units.

\text{Area of hexagon, B }= 6 \times \dfrac{\sqrt{3}}{4}a^{2}

Here, a = 8 units

\Rightarrow B = 6 \times \dfrac{\sqrt{3}}{4}\times 8^{2}\\\Rightarrow B = 166.27\text{ square units}

Putting values of B and h in Formula of volume:

\Rightarrow V = \dfrac{1}{3} \times 166.27 \times 18\\\Rightarrow V = \dfrac{2992.89}{3} = 997.62\text{ cubic units}

Hence, the volume is <em>997.62 cubic units.</em>

4 0
3 years ago
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