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3 years ago

Expand the following expression 3(9+2b-5) and evaluate for b=2

Mathematics

2 answers:

sammy [17]3 years ago

8 0

Answer:

Distribute

27 + 6b - 15 12 + 6b 13 19 12 + 6(2) = 24

Step-by-step explanation:

hope this helps

inna [77]3 years ago

6 0

Answer:

Step-by-step explanation:

Distribute

27 + 6b - 15

then combine like terms

12 + 6b.

then to evaluate

plug in 2 for b

12 + 6(2) = 24

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lawyer [7]

Answer:

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3 years ago

What is the amplitude, period, and phase shift of f(x) = -4 sin(2x + π) - 5?

son4ous [18]

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Amplitude
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3 years ago

Read 2 more answers

-2.7f + 0.3f - 16 - 4=

suter [353]

Answer:

-2.4f or -8 1/3

Step-by-step explanation:

I am not sure what should be at the end of the equal sign but if it is to simplify it would be -2.4f-20

If you want to solve then you get -2.4f=20 so f=-20/2.4 which equal to -8 1/3

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2 years ago

What best describes the number 5 ?write prime or composite or both prime and composite

Salsk061 [2.6K]

It is prime because nothing equals it other than 5x1

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3 years ago

Sistema de ecuaciones.5x+2y=-152x-2y=-6

Zolol [24]

Tnemos el sisema de ecuaciones:

$\begin{gathered} 5x+2y=-15 \\ 2x-2y=-6 \end{gathered}$

Podemos resolverlo por eliminación sumando ambas ecuaciones y eliminando y. Asi podemos resolver para x:

$\begin{gathered} (5x+2y)+(2x-2y)=(-15)+(-6) \\ 7x+0y=-21 \\ x=-\frac{21}{7} \\ x=-3 \end{gathered}$

Ahora podemos resolver para y con cualquiera de las dos ecuaciones:

$\begin{gathered} 2x-2y=-6 \\ 2\cdot(-3)-2y=-6 \\ -6-2y=-6 \\ -2y=-6+6 \\ -2y=0 \\ y=0 \end{gathered}$

Respuesta: x=-3, y=0

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1 year ago