3 years ago

Simplify. write the answer as a fraction. -21/51

Mathematics

1 answer:

Jlenok [28]3 years ago

3 0

Answer:

i think the answer is -7/17

Step-by-step explanation:

hope it help :) i dont really good with fraction

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PLEASE HELP ASAP!!!! Thanks!!

tino4ka555 [31]

Answer:

1.2 cm

Step-by-step explanation:

Quadrilateral circumscribing a circle is a quadrangle whose sides are tangent to a circle inside it (see attached diagram).

The area of circumscribed quadrilateral is

$A=p\cdot r,$

where $p=\dfrac{a+b+c+d}{2}$ is semi-perimeter and r is radius of inscribed circle.

In your case, $A=12\ cm^2$

If a quadrilateral is circumscribed over the circle, then the sum of opposite sides is equal, so

$a+c=b+d=10\ cm,$

$P=10+10=20\ cm\\ \\p=\dfrac{20}{2}=10\ cm$

Now

$12=10\cdot r\Rightarrow r=\dfrac{12}{10}=1.2\ cm$

8 0

3 years ago

Evaluate 4a3 + 5b4 when a=2 and b=5

timama [110]

Answer:

$4 {a}^{3} + 5 {b}^{4} = 4( {2}^{3}) + 5( {5}^{4} ) \\ = 4(8) + 5(625) \\ = 32 + 3125 \\ = 3157$

I hope I helped you^_^

7 0

2 years ago

EXIT

Inessa05 [86]

Point slope: y - y1 = m(x - x1)
Plug in the points
Answer: y - 5 = 1/3(x + 2)

7 0

3 years ago

Jose's gas tank is 1/5 full. After he buys 9 gallons of gas, it is 7/10 full. How many gallons can Jose's tank hold?

Anika [276]

Answer:

18 gallons

Step-by-step explanation:

<u>Let the capacity of tank is x</u>

1/5x + 9 = 7/10x
2/10x + 9 = 7/10x
5/10x = 9
1/2x = 9
x = 18 gallons

5 0

3 years ago

Solve the equation 8x squared - 4 =28

Yuri [45]

8x² - 4 = 28
8x² = 28 + 4
8x² = 32
x² = 32/8
x² = 4
x = <span>±2

</span>

4 0

3 years ago