3 years ago

How do you get the answer to this problem? (2^3)(2^-7)

Mathematics

1 answer:

postnew [5]3 years ago

7 0

(2^3)=2*2*2=8
(2^-7)=1/2*1/2*1/2*1/2*1/2*1/2*1/2=1/128
8*1/128=1/16=.0625

You might be interested in

What are the statements and reason that make these two triangles similar?

pochemuha

the 2x is the same side

8 0

3 years ago

Which equation represents "the sum of eight times a number and seven is twice the number"? A) 8(7 + 2N) B) 8N = 7 + 2N. C) 7N +

Yuliya22 [10]

The sum of 8 times a number and 7.....sum means add
8n + 7

is twice the number...is means equals
= 2n

so we have : 8n + 7 = 2n

7 0

3 years ago

Read 2 more answers

Eva is going to see a movie and is taking her 5 kids. Each movie ticket costs $13 and there are an assortment of snacks availabl

viktelen [127]

Answer:

Tickets: $78

snacks: $21

total: $99

Step-by-step explanation:

expensive movies.

5 0

3 years ago

The temperature of a city changed by -20°C over a four week. If the temperature changed by the same amount each week write an ex

andre [41]

Answer:

A) $T=\frac{-20}{4}$

B) T = -5 °C

Step-by-step explanation:

A) Let T be the change in temperature of the week. T is determined as the total temperature change (-20°C) divided by the number of weeks that have passed (4 weeks). The expression is:

$T=\frac{-20}{4}$

B) In order to simplify the expression, simply perform the division.

$T=\frac{-20}{4}\\T=-5^oC$

This means that the temperature has dropped by 5 degrees each week.

8 0

3 years ago

1.) If x varies directly as y and x = 35 when y = 7. What is the value of y when x = 25?

Fiesta28 [93]

Answer:

y = 5

Step-by-step explanation:

$x \ \alpha \ y$

$=> x = k \times y\\=> 35 = k \times 7\\=> k = 5$

$x = k \times y$

$=>25 = 5 \times y\\ =>5 = y$

8 0

3 years ago

Read 2 more answers