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2 years ago

A formula is given with the value of all but one of the variables in the formula. Find the value of the variable not given.

Mathematics

2 answers:

Svet_ta [14]2 years ago

5 0

Answer:

P = 24

Step-by-step explanation:

P = 2L + 2W ( substitute L = 4, W = 8 into the formula )

P = 2(4) + 2(8) = 8 + 16 = 24

Tanya [424]2 years ago

4 0

Answer :

Step-by-step explanation:

P=2(4)+2(8)

P=8+16

P= 24

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Solve -17 = x/-3 for x.

MA_775_DIABLO [31]

Answer:

x = 51

Step-by-step explanation:

-17 = x/-3

Multiply each side by -3

-3 * -17 = x / -3 * -3

51 = x

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2 years ago

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Let X=[10 -3] and y=[-1 -5] then the distance between X and y is

slavikrds [6]

Answer:

[11 2]

Step-by-step explanation:

10 to -1 is 11 and-3 to -5 is 2 therfore you have the distance of 11 and 2

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Simplfy <br> 2x+4/-3 = 12

nasty-shy [4]

So you have the equation (2x+4)/-3=12
Multiply by -3 on each side.
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3 years ago

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Answer:

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2 years ago

What is the sign of f on the interval -2

TEA [102]

Answer:

$f$ is sometimes positive and sometimes negative.

Step-by-step explanation:

$f(x)=(x-3)(x+2)(x+4)(x+4)(x-1)(2x-9)$

Take $x=-1\in(-2,\frac{9}{2})\ as-2$

$f(-1)=(-1-3)(-1+2)(-1+4)(-1-1)(-2-9)\\\\=(-4)(1)(3)(-2)(-11)\\\\=-264\\\\f(-1)$

Take $x=2\in(-2,\frac{9}{2})\ as\ -2$

$f(2)=(2,-3)(2+2)(2+4)(2-1)(2\times2-9)\\\\=(-1)(4)(6)(1)(-5)\\\\=120\\\\f(2)>0$

Hence $f(x)$ for $x=-1$ and $f(x)>0$ for $x=2$

So $f$ is sometimes positive and sometimes negative in the interval.

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3 years ago