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makkiz [27]
3 years ago
15

If f(x)=l 2x-4 l, find f(-7).

Mathematics
1 answer:
Ierofanga [76]3 years ago
7 0

Answer:

f(-7) = 18

Step-by-step explanation:

Add AbS in calculator

or

2(-7) = -14 (AbS) -> 14

-4 -> (AbS) = 4

14+4 = 18

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A cat eats 2/3 cup of food each day. How many days will a bag containing 16<br> cuns of food last?
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Find the first two expressions in the sequence ___, ___, 4x+5, 5x+7, 6x+9, 7x+11, 8x+13...
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4 years ago
The hypotenuese of an isosceles right triangle is 13 inches. The midpoints of its sides are connected to form an inscribed trian
Georgia [21]

Answer:

The Sum of the areas of theses triangles is 169/3.

Step-by-step explanation:

Consider the provided information.

The hypotenuse of an isosceles right triangle is 13 inches.

Therefore,

x^2+x^2=169\\2x^2=169\\x=\frac{13}{\sqrt{2} }

Then the area of isosceles right triangle will be: A=\frac{1}{2} x^2

Therefore the area is: A=\frac{169}{4}

It is given that sum of the area of these triangles if this process is continued infinitely.

We can find the sum of the area using infinite geometric series formula.

S=\frac{a}{1-r}

Substitute a=\frac{169}{4} \ and\ r=\frac{1}{4} in above formula.

S=\frac{\frac{169}{4}}{1-\frac{1}{4}}

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Hence, the Sum of the areas of theses triangles is 169/3.

7 0
3 years ago
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