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Lynna [10]
4 years ago
8

My daughter is completely confused with this math homework. can some one please explain this tho me

Mathematics
2 answers:
posledela4 years ago
8 0

Step-by-step explanation: let me explain by doing number 2,

93 + (68 + 7)

We do what’s in the parenthesis, 68 + 7 = 75

Now we have 93 + 75 which = 168.

xeze [42]4 years ago
6 0
You have to do what is in the parenthesis and then the outside parts.
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The wavelength of a wave of frequency 100 Hz is 3.3m. Find it's speed​
Natasha_Volkova [10]

Step-by-step explanation:

Given:

Wavelength of wave : 3.3m

Frequency of wave : 100Hz.

speed/velocity : ?

As we know

velocity = wavelength × Frequency

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=330ms−1

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5 0
1 year ago
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What is the solution to the equation 1 over 24 multiplied by x is equal to 1 over 6? :-)
Mumz [18]

Answer:

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4 years ago
2. Cement has a density of 3.0 g/cm3. You must pour a cement walkway with the
Anon25 [30]

For this case we have to by definition:

d = \frac {M} {V}

Where:

d: It is the density

M: It's the mass

V: It is the volume

According to the data we have to:

d = 3.0 \frac {g} {cm ^ 3}

On the other hand we have that 1 meter is equivalent to 100 centimeters. Thus the measurements of the walkway are:

600 cm long, 100 cm wide and 10 cm thick. Looking for the volume we have:

V = 600 * 100 * 10\\V = 600,000 cm ^ 3

According to the formula we have:

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1,800,000g

7 0
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Please help me with 1-8
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Answer:

Will no explain too much in details.

The bottom rectangle has sizes 21cm*9cm, so its area is 189cm^2.

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The area of the object is 231 cm^2.

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3 years ago
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It is 15, as 20 is only a factor of 60 and not 75.

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4 years ago
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