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3 years ago

Can somebody please help me? I will mark brainiest if i can! qr + r; use q = 3, and r = -6

Mathematics

2 answers:

Alenkasestr [34]3 years ago

6 0

<h3>Answer: -24</h3>

Explanation:

The letters q and r indicate placeholders for actual numbers.

In this case, we replace q with 3 and replace r with -6

Afterward we use the order of operations PEMDAS like so:

qr + r

3*(-6) + (-6)

-18 + (-6)

-24

Sveta_85 [38]3 years ago

5 0

The answer is -12. R times -6 is -18 and -18 plus -6 is -12

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We have been given that a silo is in the shape of a cone. The silo is 8 meters tall and it's base has a diameter of 3 meters. Soybeans cost $414 per cubic meter. We are asked to find the total cost to fill the silo with soybeans.

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We know that radius is half the diameter, so radius of silo would be $r=\frac{3}{2}=1.5$ .

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$\text{Volume of cone}=\frac{1}{3}\pi\times 2.25\text{ m}^2 (8)\text{ m}$

$\text{Volume of cone}=\pi\times 0.75\text{ m}^2 (8)\text{ m}$

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