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3 years ago

Idk how to do this someone help me

Mathematics

2 answers:

Vlad [161]3 years ago

4 0

I'm thinking its 4 to the 12 power but I am not completely sure on this

Romashka [77]3 years ago

3 0

Hello!

When you multiply, the exponents add, so 4^1+4^1= 4^2.

In this problem we need to multiply 4^-8 to get 4^5.When adding you must add 13 to get -8 to 5.

This means our answer is 4^13.

Hope this helps!

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At Clint's next birthday, he will he will be twice the age of his cousin Elizabeth. Elizabeth is now two thirds the age of he br

tigry1 [53]

Ken:

Ken's Age = 18

Elizabeth:

Elizabeth's Age = 2/3 x Ken's age

Elizabeth's Age = 2/3 x 18

Elizabeth's Age = 12

Clint:

-Note: At Clint's next birthday. So we need to subtract 1 from the age.

Clint's Age = (2 x Elizabeth's Age) - 1

Clint's Age = (2 x 12) - 1

Clint's Age = 24 - 1

Clint's Age = 23 right now

Hope this helps!! :)

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4 years ago

Find the solutions/ show steps Sin2x+sin(4x) =0

NISA [10]

Answer:

x = 0, π/3, π/2, 2π/3, π, 4π/3, 3π/2, 5π/3

Step-by-step explanation:

sin(2x) + sin(4x) = 0

Use double angle formula.

sin(2x) + 2 sin(2x) cos(2x) = 0

Factor.

sin(2x) (1 + 2 cos(2x)) = 0

Solve.

sin(2x) = 0, cos(2x) = -½

2x = 0, 2π/3, π, 4π/3, 2π, 8π/3, 3π, 10π/3

x = 0, π/3, π/2, 2π/3, π, 4π/3, 3π/2, 5π/3

4 0

3 years ago

I need help with 3b2-b b=5

salantis [7]

Answer:

$f(x) = 3 {b}^{2} - b \\ f(5) = 3 {(5)}^{2} - 5 \\ f(5) = 3(25) - 5 \\ f(5) =7 5 - 5 \\ \boxed{f(5) = 70}$

f(5) = 70 is the right answer.

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3 years ago

Simplify the rational Expression

qaws [65]

Answer:

$\frac{x^2+2x}{x-3}$

Step-by-step explanation:

We need to factor out numerator and denominator in order to simplify the rational expression by cancelling common factors.

Numerator : x^3 - 4 x = x (x^2 - 4) = x (x - 2) (x + 2)

Denominator (factoring by grouping):

x^2 - 5 x + 6 = x^2 - 3 x - 2 x + 6 = x (x - 3) - 2 (x - 3) = (x - 3) (x - 2)

Then we can cancel out the common factor (x - 2) in both numerator and denominator, leading to:

x (x + 2) / (x - 3) = (x^2 + 2)/ (x-3)

$\frac{x^2+2x}{x-3}$

4 0

3 years ago

How do I solve for x

Nataly [62]

28 divided by 2, which is 14.

4 0

3 years ago