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3 years ago

What is the value of the expression below?

Mathematics

1 answer:

lukranit [14]3 years ago

8 0

Answer:

D. 30

Step-by-step explanation:

-5(-8)(3)(-1) /(-4)

Lets simplify the numerator first

-5*-8 = 40

40 *3 = 120

120*-1 = -120

Replace -5(-8)(3)(-1) with -120

-120/-4

A negative divided by a negative is a positive

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JulsSmile [24]

Is 15 an option for this question

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3 years ago

Find the area of a sector with a central angle of 140° and a diameter of 9.6 cm. Round to the nearest tenth.

olchik [2.2K]

Answer:

$A=28.1\ cm^2$

Step-by-step explanation:

The area of a circular sector with a central angle θ and radius r is given by:

$\displaystyle A=\frac{1}{2}r^2 \theta$

Note: The angle must be in radians.

We need to find both the radius and the angle in radians.

Diameter = 9.6 cm

Radius r=Diameter/2=4.8 cm

Angle in radians= Angle in degrees*π / 180

θ = 140*π / 180 = 2.4435 rad

Now we calculate the area:

$\displaystyle A=\frac{1}{2}(4.8)^2 2.4435$

$\boxed{A=28.1\ cm^2}$

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3 years ago

120% of what number is 36?

velikii [3]

The answer is 43.2 Hope this helps!

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4 years ago

Explain how you solved 42-16

Mkey [24]

Answer:

Step-by-step explanation:

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3 years ago

Manson ran 26 miles in 2 hours. what is the unit rate of miles per hours?

mart [117]

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Hope this helps!

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3 years ago

Read 2 more answers