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3 years ago

Which expression is equivalent to (5^-2)(5^-1)

2 answers:

5 0

The rule for multiplying similar bases with exponents:

(a^b)(a^c)=a^(b+c)

In this case we have:

(5^-2)(5^-1)

5^(-2-1)

5^(-3)

The rule for negative exponents:

a^(-b)=1/(a^b)

So in this case:

5^(-3) is equal to

1/(5^3)

1/125

Delvig [45]3 years ago

3 0

Answer:

1/125

Step-by-step explanation:

In M a t h w a y, this is the answer ya get when the expression's simplified. Hope this helps!

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What is the slope of the line in the graph? -4/3 -3/4 3/4 4/3

mart [117]

Answer:

-3/4

Step-by-step explanation:

Use rise over run. Since the line is going down you know it will be negative and basically you just count squares.

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2 years ago

How many

MariettaO [177]

Answer:

Step-by-step explanation:

92/17= 5.4

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3 years ago

A game at a county fair has a spinning drum holding 15 colored plastic balls: some white, some green, and some red. Every time t

ANTONII [103]

I would say c

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3 years ago

Read 2 more answers

Will up-vote!

klasskru [66]

19.2 * 10⁸ minutes.

60 minutes = 1 hour.

19.2 * 10⁸ minutes = (19.2 * 10⁸) / 60 hour

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3 0

3 years ago

Select the correct answer.

Eva8 [605]

Answer:

Equation C: 5/8x + 2..5 = 3/8x + 1.5 + 1/4x

Step-by-step explanation:

Let us go through each of the equations one by one.

Equation A: $2.3y+2+3.1y=4.3y+1.6+1.1y+0.4$

This simplifies to

$5.4y+2=5.4y+2$

which has infinitely many solutions.

Equation B: $32x+25-21x=10x$

this simplifies to

$x+25=0$

$x=-25$

which is exactly one solution.

Equation C: $\frac{5}{8} x+2.5=\frac{3}{8}x+1.5+\frac{1}{4} x$

this simplifies to

$\frac{5}{8} x+2.5=\frac{5}{8} +1.5$

$2.5=1.5$

There's no way this is going to be possible; this equation has no solutions.

Equation D: $\frac{1}{3} x+\frac{1}{7} x=\frac{3}{7} x$

this gives

$\frac{1}{3} =\frac{2}{7} y$

$y=\frac{7}{6}$

which is exactly one solution.

Thus we see that it is equation C that has no solutions.

3 0

3 years ago