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3 years ago

Evaluate f(x) = 1/4x for x = -5. A. 20 B. -1/20 C. -1 1/4 D. -4/5

Mathematics

2 answers:

sladkih [1.3K]3 years ago

7 0

Answer:

C. -1 1/4

Step-by-step explanation:

First, we substitute -5 for x.

$f(-5)=\frac{1}{4} *-5$

Then, we evaluate.

$f(-5)=\frac{1}{4} *-5=\frac{-5}{4} =-1\frac{1}{4}$

lalo2 years ago

0 0

the answer will be -1 1/4

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Help!!!!! Solve the distance??

hram777 [196]

Answer:

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Step-by-step explanation:

ED/AE=BC/AB

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ED=240*620/280

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The graph of the function f(x) = -(x+3)(x - 1) is shown below. What is true about the domain and range of the function? у The do

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3 years ago

Suppose the lengths of two sides of a right triangle are represented by 2x and 3 (x + 1), and the longest side is 17 units. Find

densk [106]

Answer:

x=4

Step-by-step explanation:

Step 1:-

given the lengths of two sides of a right angle are represented by 2x and 3(x+1) and longest side is 17 units.

AB = 2x and BC = 3(x+1) and longest side AC= 17

by using Pythagoras theorem

$AC^2 = AB^2 + BC^2$

step 2:-

The hypotenuse is longest side is AC = 17 units

(17)^2 = 4x^2 +9(X+1)^2

on simplification, we will use formula

$(a + b)^2 = a^2 +2ab+b^2$

289 = 4x^2 +9(x^2+2x+1)

$13x^2 +18x-280 = 0$

finding factors 70 X 52 = 3640

$13x^2 +70x-52x-280 = 0$

$13x^2 -52x+ 70x-280 = 0$

Taking common , we get

13x(x-4)+70(x-4)=0

x-4=0 and 13x+70=0

x=4 and $13x =-70$

x=4 and $x=\frac{-70}{13}$

we can not choose negative value so x value is 4

Final answer:- x = 4

verification:-

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289 = 64 +9(25)

289=289

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Read 2 more answers

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Andrej [43]

Answer:

Step-by-step explanation:

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