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KIM [24]
3 years ago
10

Evaluate the expression when a = - 4.2 and b = - 3.9 . - 7b + 2a

Mathematics
1 answer:
Delicious77 [7]3 years ago
4 0

Answer:

-35.7

Step-by-step explanation:

1. Plug in a and b to the equation:

7(-3.9)+2(-4.2)

2. Evaluate: -35.7

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Which of these number words represents the numeral 4,056? four thousand, five hundred six four thousand, five hundred fifty-six
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Solution:

we have been asked to find

Which of the given number words represents the numeral 4,056?

Its about the counting.

On unit place we have 6.

on Tenth place we have 5.

on hundredth place we have 0.

On Thousand place we have 4.

so in our number word representation there will be no "Hundreds".

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zimovet [89]

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Step-by-step explanation:

Given

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Speed of the particle is given by

\Rightarrow v=\dfrac{ds}{dt}\\\\\Rightarrow v=\dfrac{d(t^2-5t+1)}{dt}\\\\\Rightarrow v=\left |  2t-5\right |

Acceleration of the particle is

\Rightarrow a=\dfrac{dv}{dt}\\\\\Rightarrow a=2

velocity can be negative, but speed cannot

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