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3 years ago

Please need help!!!!!!

Mathematics

1 answer:

Murljashka [212]3 years ago

5 0

Answer: C (areas B and D)

Step-by-step explanation:

B is 27:36 = 9(3):9(4) = 3:4

D is 24:32 = 8(3):8(4) = 3:4

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Cups of dog food is recommended for a 25 pound dog

bagirrra123 [75]

Answer:

100 cups of food is for a 25 pound dog

5 0

3 years ago

Read 2 more answers

the question is in the picture below, if you could show all your work so i can see how to do it, that would be appreciated.

ki77a [65]

m∠R = 27.03°

Solution:

Given In ΔQRP, p = 28 km, q = 17 km, r = 15 km

To find the measure of angle R:

Law of cosine formula for ΔQRP:

$r^{2}=p^{2}+q^{2}-2 pq \cos R$

Substitute the given values in the above formula.

$(15)^{2}=(28)^{2}+(17)^{2}-2 (28)(17) \cos R$

$225=784+289-952 \cos R$

$225=1073-952 \cos R$

Switch the given equation.

$1073-952 \cos R=225$

Subtract 1073 from both side of the equation.

$-952 \cos R=-848$

Divide by –952 on both sides.

$$ \cos R=\frac{106}{119}$

$$ R=\cos^{-1} \left(\frac{106}{119}\right)$

$R=27.03^\circ$

Hence m∠R = 27.03°.

7 0

4 years ago

Can someone help me find the annulus of the shaded area? much appreciated

Dimas [21]

Answer:

34.83

Step-by-step explanation:

7 0

3 years ago

Suppose a water tank in the shape of a right circular cylinder is thirty feet high and eight feet in diameter. a) How much sheet

Zanzabum

Answer:

$755.98 ft^2$

Step-by-step explanation:

Height of the Cylinder= 30 feet

Diameter = 8 feet

Radius= Diameter/2 = 8/2 = 4 feet

The Amount of Metal Sheet used in constructing the tank is the Total Surface Area of the Tank.

Total Surface Area of a Cylinder =

$=2\pi r(r+h)\\=2*\pi*4(4+30)\\=8*\pi*30=\\=240\pi\\=755.98 ft^2$

5 0

4 years ago

2 A chef planning for a large banquet

fiasKO [112]

Answer:

320

Step-by-step explanation:

2 out of 5 is the ratio 2/5.

We want the denominator to become 800.

$\dfrac{800}{5} = 160$

$160 \times 2 = 320$

$\dfrac{2}{5} = \dfrac{2 \times 160}{5 \times 160} = \dfrac{320}{800}$

Since 2/5 = 320/800, he will need to prepare 320 cups of soup.

8 0

4 years ago