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3 years ago

If f(x) = -8 - 5x, what is f(-4)

Mathematics

2 answers:

Mashcka [7]3 years ago

6 0

Answer:

f(- 4) = 12

Step-by-step explanation:

To evaluate f(- 4) substitute x = - 4 into f(x) , that is

f(- 4) = - 8 - 5(- 4) = - 8 + 20 = 12

bogdanovich [222]3 years ago

3 0

f(x)=-8-5x

$\\ \rm\longmapsto f(-4)$

Put -4 inplace of x

$\\ \rm\longmapsto -8-5(-4)$

$\\ \rm\longmapsto -8+20$

$\\ \rm\longmapsto 12$

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Ugo [173]

The length of the brace required is 4.3m

What is sine rule?

In a ΔABC a, b and c are the sides and A, B and C are angles then,

$\frac{a}{SinA}=\frac{b}{sinB}=\frac{c}{sinC}$

We can find the length, l as shown below:

Let AB=3m, BC=2m and AC=l

Let ∠A=25°

So, in ΔABC

$\frac{BC}{sinA}=\frac{AB}{sinC}=\frac{AC}{SinB}$

$\frac{BC}{sinA}=\frac{AB}{sinC}$

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Rounding to nearest tenth of meter.

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Learn more about Sine Rule here:

brainly.com/question/25852087

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2 years ago

Factor 2y^2+7y-14=0<br> How do I solve this by factoring ?

Gre4nikov [31]

Answer:

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Step-by-step explanation:

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