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3 years ago

Help Please this is algebra one!!

Mathematics

1 answer:

Veronika [31]3 years ago

5 0

The answer is B.

The basic plan is c = 20 + 8s ($20 initial cost + $8 each session)
The trial plan is c = 12s ($12 each session)

You need to write a table to determine when the two amounts will equal each other. At month 5 we see that you will end up spending the same amount of money on each plan.

B T
------------
1) 28 12
2) 36 24
3) 44 36
4) 52 48
5) 60 60

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Find the area of a rhombus with side length 6 and an interior angle with measure $120^\circ$.

Serhud [2]

Answer:

The area of a rhombus is $18\sqrt{3}$ square units.

Step-by-step explanation:

Side length of rhombus = 6 units.

Interior angle of rhombus = 120°

another Interior angle of rhombus = 180°-120° = 60°.

Draw an altitude.

In a right angled triangle

$\sin \theta=\frac{opposite}{hypotenuse}$

$\sin (60)=\frac{h}{6}$

$\frac{\sqrt{3}}{2}=\frac{h}{6}$

Multiply both sides by 6.

$3\sqrt{3}=h$

The height of the rhombus is $3\sqrt{3}$ .

Area of a rhombus is

$Area=base\times height$

$Area=6\times 3\sqrt{3}$

$Area=18\sqrt{3}$

Therefore, the area of a rhombus is $18\sqrt{3}$ square units.

8 0

2 years ago

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Math question down below

tensa zangetsu [6.8K]

The mean is the average.
To solve for the average we add all the numbers up and divide by how many numbers there are.
21, 23, 25, 25, 26, 28, 28, 28, 31, 33.
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2 years ago

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Gabrielle's age is three times Mikhail's age. The sum of their ages is 20. What is Mikhail's age?

PtichkaEL [24]

Answer:

Mikhail is 5 years old

Step-by-step explanation:

Represent each member with a variable.

X= Gabrille

Y=Mikhail

X+Y=20 (sum of their ages is 20)