3 years ago

Need help thank you very much

Mathematics

1 answer:

Zarrin [17]3 years ago

4 0

Answer:

a) - 9/2 or -0,45

b) - 3/5 or -0,6

c) -4

d) 1

e) -2

d) 0

Step-by-step explanation:

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A cylinder of manganese (length 4.00 cm, diameter = 1.00 cm) has a mass of 22.62 g. What is the density of manganese?

Gnom [1K]

Equation for density is mass/volume

Mass=22.62 g

Volume= 22/7 x 1/2^2 x 4

3.14 x 0.5 x 0.5 x 4

=3.14 cm3

Mass/ Volume

22.62/3.14

7.2 g/cm3 is the answer

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3 years ago

What is the difference of the fractions? Use the number line to help find the answer. StartFraction 1 over 5 EndFraction minus t

Basile [38]

Answer:

- 11/20

Step-by-step explanation:

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4/20 - 15/20

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3 years ago

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Simplify V-16<br> a. -8i <br> b. -4i <br> c. 4i <br> d. 8i

Lena [83]

Answer:

C. 4i

Step-by-step explanation:

√-1 is imaginary number i

Step 1: Write expression

√-16

Step 2: Factor

√-1 · √16

Step 3: Simplify

i · 4

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3 years ago

A 7 kg ham costs $19/kg. Find the cost per pound.

stepan [7]

Answer: $\$8.62/\text{Pound}$

Step-by-step explanation:

Given

There is $7\ kg$ of ham available which costs

cost $=\$\ 19/kg$

i.e.

$1\ kg\ \text{costs}\ \$19$

and we know

$1\ kg=2.204\ \text{pound}$

So, $2.204\ \text{Pound costs}\ \$19$

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3 years ago

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9966 [12]

Answer:

D) b = $\frac{S-2ac}{2a + 2c}$

Step-by-step explanation:

First, move all the terms that do not include b to the left side with S:

S = 2ab + 2bc + 2ac

S - 2ac = 2ab + 2bc

Now, factor out 2b from the right side:

S - 2ac = 2b(a + c)

Divide both sides by 2(a + c):

b = $\frac{S-2ac}{2(a + c)}$

Finally, multiply out the denominator:

b = $\frac{S-2ac}{2a + 2c}$

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4 years ago