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MissTica
4 years ago
15

How do you solve this math problem

Mathematics
1 answer:
marin [14]4 years ago
3 0
D(t)=0.8 times 6 squared will equal to 28.8, when you do all of the math.

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Which expressions are equivalent to RootIndex 3 StartRoot 128 EndRoot Superscript x? Select three correct answers.
Firdavs [7]

Step-by-step explanation:

The given expression is :

(\sqrt[3]{128} )^x

We need to solve the above expression.

According to one of the law of indices,  

(\sqrt[a]{m} )^b=(\sqrt{m})^{b/a}

Using above property,

(\sqrt[3]{128} )^x=(128)^{x/3}\\\\=(64\times 2)^{x/3}\\\\=4(2)^{x/3}\ (\because\ \sqrt{64}=4) \\\\=4(\sqrt[3]{2})^x\\\\=4(2^{1/3})^x

Hence, this is the required solution.

3 0
3 years ago
Solutions to the question please. The answer is 3.6km
Afina-wow [57]

Let the Distance between A and B be : C km

Given : The Man Travels from A to B at a Speed 4 km/h

⇒ The Man Travels 4 km in One Hour during his Journey from A to B

⇒ The\;Man\;Travels\;One\;km\;in\;\frac{1}{4}\;Hour\;during\;his\;Journey\;from\;A\;to\;B

⇒ The\;Man\;Travels\;C\;km\;in\;\frac{C}{4}\;Hour\;during\;his\;Journey\;from\;A\;to\;B

Given : The Man Travels from B to A at a Speed 6 km/h

⇒ The Man Travels 6 km in One Hour during his Journey from B to A

⇒ The\;Man\;Travels\;One\;km\;in\;\frac{1}{6}\;Hour\;during\;his\;Journey\;from\;B\;to\;A

⇒ The\;Man\;Travels\;C\;km\;in\;\frac{C}{6}\;Hour\;during\;his\;Journey\;from\;B\;to\;A

⇒ The\;Total\;Time\;Taken\;by\;the\;Man = \frac{C}{4} + \frac{C}{6} = \frac{3C + 2C}{12} = \frac{5C}{12}\;Hour

We know that One Hour contains 60 Minutes

⇒ The Total Time taken by Man =  \frac{5C}{12}\times60\;Min = 25C\;Min

Given Total Time Taken by Man is 45 Minutes

⇒ 25C = 45

⇒ C = \frac{45}{25} = 1.8\;km

But the Total Distance Traveled by the Man is 2C

⇒ 2C = 2 × 1.8 = 3.6 km

⇒ The Total Distance Traveled by the Man is 3.6 km

8 0
3 years ago
When you multiply my number by 6 and add 7 you get 25 what is my number
pav-90 [236]
To solve this you do 25-7=18 and do 18÷6=3, so my number is 3. To check if this is correct you do 3×6=18 and 18+7=25
8 0
4 years ago
At the local college, a study found that students earned an average of 14 credit hours per semester. A sample of 138 students wa
77julia77 [94]

Answer:

1932 credit hours

Step-by-step explanation:

Create a proportion

credits             credits

----------     =      ----------

students          students

14      ?

---- = -----

1         138

14 times 138

1932 credit hours

6 0
3 years ago
A is a supplement of B, A is a complement of C, and B = 124°. Find B+C. ​
KatRina [158]

Answer:

248

Step-by-step explanation:

A + B = 180 -EQ 1

A + C =180 -EQ 2

B =124

BY EQ1 :

A = 180 - 124 =56

C = 180 -56 =124

B + C = 124+124

=248

5 0
3 years ago
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