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3 years ago

-1 1/5 + -3/5 = ? please help asap

Mathematics

1 answer:

KengaRu [80]3 years ago

7 0

Answer: -4/5 or -0.8
Explanation: Because it is the answer

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Step-by-step explanation:

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A negative number raised to an odd power is

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Given f(x)= 3x+(1/4), Find f(1) and f(-1)

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Answer:

$f(1)=\frac{13}{4}$

$f(-1) = -\frac{11}{4}$

Step-by-step explanation:

Given f(x) = 3x + (1/4), Find f(1) and f(-1)

$f(x) = 3x + (1/4)$

$f(1) = 3(1) + (1/4)$

$f(1) = 3 + (1/4)$

$f(1)=3\frac{1}{4}$

$f(1)=\frac{13}{4}$

$f(x) = 3x + (1/4)$

$f(-1) = 3(-1) + (1/4)$

$f(-1) = -3 + (1/4)$

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$f(-1) = -\frac{11}{4}$

Hope this helps!

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3 years ago

Anige eat 1/2 of salad jess eatdid anige and jess eat 1/2 large

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If they both at 1/2 of the salad then they ate the same amount of lunch. Because 1/2 is equal to 1/2 therefore it is the same.

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4 years ago

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30 POINTS! Consider the system of linear equations and the matrix equations below.

fiasKO [112]

Answer:

Option C is correct.

Step-by-step explanation:

-x+3y=2

4x-2y=22

In matrix form is represented as:

$\left[\begin{array}{cc}-1&3\\4&-2\end{array}\right] \left[\begin{array}{c}x&y\end{array}\right] =\left[\begin{array}{c}2&22\end{array}\right]$

AX=B

$X = A^{-1}B$

$A^{-1} = |A|/Adj A$

|A| = (-1)(-2)-(3)(4)

|A| = 2-12

|A| = -10

Adj A = $\left[\begin{array}{cc}-2&-3\\-4&-1\end{array}\right]$

A^-1 = -1/10 $\left[\begin{array}{cc}-2&-3\\-4&-1\end{array}\right]$

A^-1 = 1/10 $\left[\begin{array}{cc}2&3\\4&1\end{array}\right]$

X= A^-1 B

X = 1/10 $\left[\begin{array}{cc}2&3\\4&1\end{array}\right]$ $\left[\begin{array}{c}2&22\end{array}\right]$

X=1/10 $X=1/10\left[\begin{array}{c}2*2+3*22\\4*2+1*22\end{array}\right]\\X=1/10\left[\begin{array}{c}4+66\\8+22\end{array}\right]\\X=1/10\left[\begin{array}{c}70\\30\end{array}\right]\\X=\left[\begin{array}{c}70/10\\30/10\end{array}\right]\\X=\left[\begin{array}{c}7\\3\end{array}\right]$

So, x = 7 and y =3

Hence Option C is correct.

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3 years ago

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