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3 years ago

What exponential expression is equal to 2 to the negative 5th power • 2 to the 8th power ?

Mathematics

2 answers:

seropon [69]3 years ago

8 0

Answer:

2^3

Step-by-step explanation:

2^-5×2^8=2^(-5+8)

= 2^3

Hatshy [7]3 years ago

4 0

Answer:

2³

Step-by-step explanation:

Written in numerical form:

2⁻⁵ · 2⁸

Since both exponents have the same base, one of the exponent rules apply. When multiplying exponents with the same base, you add the exponents.

xᵃ · xᵇ = xᵃ⁺ᵇ

2⁻⁵ · 2⁸

= 2⁽⁻⁵⁾ ⁺ ⁸

= 2³ Simplified exponent form

= 8 Most simplified form

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2 years ago

The perimeter of a triangle is 82 feet. One side of the triangle is 2 times the second side. The third side is 2 feet longer tha

andrezito [222]

Answer:

first side=40

second side=20

third side=22

Step-by-step explanation:

LET THE SIDES OF THE TRIANGLES BE y

Perimeter=82

first side=2 x y = 2y

second side=y

third side=2 +y

2y + y + 2 + y=82

4y+2=82

4y= 82-2

4y=80

y=80/4

y=20

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3 years ago

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2 years ago

Solve the division equation using the model. (2 points)

julia-pushkina [17]

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2 years ago

Eva wants to make two pieces of pottery.She needs 3/5 pound of clay for one piece and 7/10 pound of clay for the other piece.She

marta [7]

Answer:

a) Eva will need 2 bags of clay to make both pieces of pottery.

b) She will have leftover $\frac{11}{10}$ pounds of clay.

Step-by-step explanation:

a) We have to find the total amount of clay, as she needs $\frac{3}{5}pound=P_{1}$ and $\frac{7}{10}pound=P_{2}$ , so $P_{1}+P_{2}= \frac{3}{5} +\frac{7}{10} =\frac{6+7}{10}=\frac{13}{10}pounds$ , is the total amount of clay. Then as we Know that one bag of clay has $\frac{4}{5} =\frac{8}{10} pounds$ , It isn´t enough, but with two bags $2*\frac{8}{10}=\frac{16}{10} pounds$ , It is enough clay.

b) She will have leftover $\frac{16}{10} -\frac{13}{10} =\frac{3}{10}pounds$ of the second bag, then we add the third one, so $\frac{3}{10} +\frac{8}{10} =\frac{11}{10}pounds$ are leftover.

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2 years ago