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ki77a [65]
2 years ago
8

I need help please?!!!

Mathematics
2 answers:
poizon [28]2 years ago
8 0

Step-by-step explanation:

\bigg( \frac{ {7}^{ - 3} }{10}  \bigg)^{ - 2}  \\  \\  =  \bigg( \frac{ 10}{{7}^{ - 3} }  \bigg)^{ 2}  \\  \\  =  \bigg( { 10 \times{7}^{  3}  } \bigg)^{ 2}  \\  \\  =  \bigg( { 10^{ 2}  \times{7}^{  3 \times 2}  } \bigg)  \\  \\  = {7}^{  6}   \times 10^{ 2}

Vadim26 [7]2 years ago
7 0

Answer:

Step-by-step explanation:

(\frac{7^{-3}}{10})^{-2}=\frac{7^({-3*-2})}{10^{-2}}\\\\=\frac{7^{6}}{10^{-2}}\\\\=7^{6}*10^{2}

(a^{m})^{n}=a^{m*n}\\\\\frac{1}{a^{-m}}=a^{m}

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2 years ago
If 2/3 of the distance from the y-axis to point A (−30, −45) is equal to 1/4 of the distance from the x-axis to point B(a, a), w
Yuliya22 [10]

The value of a is 80

Step-by-step explanation:

The distance of a point (x_0,y_0) from the y-axis can be written as

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Similarly, the distance of a point (x_0,y_0) from the x-axis can be written as

d_x=|y_0|

Since the y-coordinate of the x-axis is zero.

In this problem:

- The distance of the point A (−30, −45) from the y-axis can be written as

d_A = |-30|=30

- The distance of point B (a,a) from the x-axis can be written as

d_B = |a| = a

Since a>0.

We are told that 2/3 of the distance from the y-axis to point A (−30, −45) is equal to 1/4 of the distance from the x-axis to point B(a, a), which means

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Learn more about distance:

brainly.com/question/3969582

#LearnwithBrainly

8 0
3 years ago
8=56<br> 7=42<br> 6=30<br> 5=20<br> 3=?
m_a_m_a [10]
3=6

In this case, the pattern is the number, in this case, 3, multiplied by the number below it.

See?
8\times7=56\\7\times6=42\\6\times5=30\\5\times4=20\\3\times2=6

Hope this helped :)
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