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Sliva [168]
4 years ago
13

6a - 5b when a = -3 and b = 4

Mathematics
2 answers:
DIA [1.3K]4 years ago
8 0

Given.

6a - 5b

Plug in values.

6(-3) - 5(4) =

-18 - 20 =

-38

AURORKA [14]4 years ago
6 0

For this case we have the following expression:

6a-5b

We must evaluate the expression when:

a = -3\\b = 4

Then, replacing the values we have:6 (-3) -5 (4)

Taking into account that according to the law of the signs of multiplication, it is fulfilled that:

+ * - = -

So:

-18-20 =

Equal signs are added and the same sign is placed:

-38

Answer:

-38

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Find the gradient of the line joining (-1,9) and (3,5)
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\rule{300}{1}\\\dashrightarrow\large\blue\textsf{\textbf{\underline{Given question:-}}}

   <em>Find the gradient of the line joining (-1,9) and (3,5)</em>

<em />\dashrightarrow\large\blue\textsf{\textbf{\underline{Answer and how to solve:-}}}

Use the slope formula:-

\boxed{\frac{y_2-y_1}{x_2-x_1}}

Replace the letters with the numbers:-

\boxed{\frac{5-9}{3-(-1)}}

\circ On simplification,

\boxed{\frac{-4}{3+1}}

\circ On further simplification,

\boxed{\frac{-4}{4}}

\circ\sf{SLOPE=-1}

<h3>Good luck with your studies.</h3>

\rule{300}{1}

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