3 years ago

Simplify -3(x+3)+5(4x+6)

Mathematics

2 answers:

GREYUIT [131]3 years ago

8 0

17 x +21 is the answer.

Zina [86]3 years ago

3 0

Answer:

17x +21

Step-by-step explanation:

-3(x+3)+5(4x+6)

Distribute

-3x-9+20x+30

Combine like terms

17x +21

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ahrayia [7]

Answer:

the correct answer is (2,3)

Step-by-step explanation:

the point starts in the 4th quadrant, if youre moving counterclockwise, the new point would be in the 1st quadrant.

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4 years ago

Solve x^2 = 5.

Phantasy [73]

Answer:

Step-by-step explanation:

Take the square root of x^2 which would make the left side x and the right side the square root 5

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4 years ago

Read 2 more answers

Let f(x)=⌊x/2⌋. We learned that the floor and the ceiling functions are NOT invertible, but we also learned about the set of pre

romanna [79]

Answer:

Value of $f^{-1}(\{4\})$ is 8.

Step-by-step explanation:

Given function,

$f(x)=\big[\frac{x}{2}\big]$

we have to find : $f^{-1}(\{4\})$

It is known that,

$[x]$ =the greatest integer <=x

Then,

$f(x)=\big[\frac{x}{2}\big]$

$\implies x=f^{-1}(\big[\frac{x}{2}\big])$

Taking x=8 we get,

$f^{-1}(\big[\frac{x}{2}\big])=x$

$\implies f^{-1}(\big[\frac{8}{2}\big])=8$

$\implies f^{-1}([4])=8$

$\implies f^{-1}(\{4\})=8$ ( Since [4]=4 )

Hence the value of $f^{-1}(\{4\})$ is 8.

7 0

3 years ago

at Monica's used cars,the sales staff set a goal of $25,500 in sales each week. The sales for three weeks were $28,288; $25,369;

lora16 [44]

25.369 did not meet her goal for the week

5 0

3 years ago

Round 0.485 correct to 1 significant figure

yanalaym [24]

Answer:

0.5

Step-by-step explanation:

the first significant figure is the non zero

6 0

3 years ago