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Anna35 [415]
3 years ago
5

The voltage in an electrical circuit is multiplied by itself each time it is reduced. The voltage is 27/125 of a volt and has be

en reduced three times what was the original voltage in the circuit?
Mathematics
1 answer:
stepan [7]3 years ago
6 0
(27/125)^(1/3) = 3/5 of a volt
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A and B share the cost in a ratio of 3:2 A pays 125£ how much does b pay???
lana66690 [7]
Let the common multiple be x 
<span>3x : 2x </span>
<span>3x = 125 </span>
<span>x = 125/3 </span>

<span>So, B pays 2x = 2 × 125/3 = £250/3 </span>
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2 years ago
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If tñ=2ñ+3, find S10​
Allisa [31]

Answer:

S_{10}=280

Step-by-step explanation:

Given that,

t_n=2n+3 ...(1)

We need to find the value of S_{10}.

Put n = 1 to find the first term.

t_1=2(1)+3=5

Put n = 2 to find the second term.

t_2=2(2)+3=7

Put n = 3 to find the third term.

t_3=2(3)+3=9

Put n = 10 to find the tenth term.

t_{10}=2(10)+3=23

It means we need to find the sum of 5,7,9,.....,23.

The formula for the sum of n terms is given by :

S_=\dfrac{n}{2}(a+a_n)

We have, n = 10, a = 5 and a_n=23

So,

S=\dfrac{10}{2}(5+23)\\\\S_{10}=10\times 28\\\\=280

So, the value of S_{10} is equal to 280.

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3 years ago
Pls Help! John wants to prove ABC = to DEF. He Knoes AB = DE and AC = DF. With Screenshot
matrenka [14]

Answer:

\angle A \cong \angle D

Step-by-step explanation:

The Side-Angle-Side method cana only be used when information given shows that an included angle which is between two sides of a ∆, as well as the two sides of the ∆ are congruent to the included side and two sides of the other ∆.

Thus, since John already knows that \overline{AB} \cong \overline{DE} and \overline{AC} \cong \overline{DF}, therefore, an additional information showing that the angle between \overline{AB} and \overline{DE} in ∆ABC is congruent to the angle between \overline{AC} and \overline{DF} in ∆DEF.

For John to prove that ∆ABC is congruent to ∆DEF using the Side-Angle-Side method, the additional information needed would be \angle A \cong \angle D.

See attachment for the diagram that has been drawn with the necessary information needed for John to prove that ∆ABC is congruent to ∆DEF.

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Which expression is equivalent to this expression? <br><br> thank you :)
CaHeK987 [17]

Answer:

C. -4x - 1

Step-by-step explanation:

-\frac{1}{2}(8x+2)

Distribute the term outside of the parenthesis, Multiply each term in the parenthesis by the term outside (do not forget to include the negative sign when multiplying);

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Simplify,

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Answer:

D. 1/5^15

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