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2 years ago

Which expression is equivalent to 7^3 x 7^-5?

Mathematics

2 answers:

slavikrds [6]2 years ago

8 0

When multiply terms with exponents, simply add the exponents.

$7^{3} * 7^{-5} = 7^{-2} = \frac{1}{7^{2}}$

Hope this helps!

Nastasia [14]2 years ago

7 0

ANSWER:
C. 1/7^2

Hope it helps u!

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3 years ago

Hi:) I need help with part 9(ii) ? Thanks :)!

Goshia [24]

Answer:

see explanation

Step-by-step explanation:

Given

2BD = 7BT , then

2(d - b ) = 7(t - b) ← distribute both sides

2d - 2b = 7t - 7b ( add 7b to both sides )

2d + 5b = 7t, thus

2 $\left[\begin{array}{ccc}10.5\\10\\\end{array}\right]$ + 5 $\left[\begin{array}{ccc}0\\3\\\end{array}\right]$ = 7t

$\left[\begin{array}{ccc}21\\20\\\end{array}\right]$ + $\left[\begin{array}{ccc}0\\15\\\end{array}\right]$ = 7t

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Hence T = (3, 5 )

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3 years ago

Read 2 more answers

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guajiro [1.7K]

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3 years ago

Question 17

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3 years ago

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4 years ago