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gregori [183]
3 years ago
12

Please help me on this one

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
5 0

Answer:

The density would be 2.89 g/ml

Step-by-step explanation:

To find this, we first need to find the mass of the rock. we can do this by subtracting the weight of the water and cylinder from the weight after the rock is added.

250g - 120g = 130g

Now we need to find the volume. To get this, we subtract the volume of the water before and after the rock is added.

75ml - 30ml - 45ml

Now we use the density formula and solve

D = m/v

D = 130g/45ml

D = 2.89 g/ml

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I Need Help on this Math Problem!
maw [93]

Step-by-step explanation:

1. vertically opposite angles are the same

b = 42

360 - (42 + 42)

360 - 84 = 276

276 ÷ 2 = 138

c = 138

2. angles in a triangle sum to 180

right angles = 90

180 - (90 + 62)

180 - 152 = 28

angle S = 28

3. 1st question no, unless one angle is given a number. angles are the same vertically opposite so the other 2 angles are also vertically opposite but angle is different size but by adding the 2 different angles, make them supplementary as they sum to 180. 2nd question yes. you could have 4 right angles.

7 0
3 years ago
Which one of the following correctly states the VaR for a 3-year period with a 2.5 percent probability?
fomenos

Answer: Option A

Prob[Rp,T ≤ E(Rp) × 3 - 1.960 × σp √3]

Step-by-step explanation:

It should be noted that, the VaR for a 3-year period with a 2.5 percent probability is Prob[Rp,T ≤ E(Rp) × 3 - 1.960 × σp √3]. Therefore, option A only is correct while other options are wrong

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3 years ago
Divide: 6 ÷ 1
fredd [130]

Answer:

One-sixth times StartFraction 2 over 1 EndFraction

5 0
3 years ago
Read 2 more answers
The sale tax rate is 7.5%. What is the tax on a $14.80 purchase.
SSSSS [86.1K]
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14.80 * .075 = 1.11

1.11 of tax will be added onto the total cost.

The total cost would be 15.91, which you can get from adding 14.80 to 1.11 or by doing 14.80 * 1.075. Regardless, the answer to this question is 1.11.
4 0
3 years ago
Will mark brainliest for whoever answers correctly
siniylev [52]
I think it is D:{5,-infinity}
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