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Oduvanchick [21]
3 years ago
7

PLEASE HELP ASAP OFFERING 15 POINTS

Mathematics
1 answer:
RUDIKE [14]3 years ago
5 0

Step-by-step explanation:

\mathrm{If\:a\:function\:f\left(x\right)\:is\:mapping\:x\:to\:y,\:then\:the\:inverse\:functionof\:f\left(x\right)\:maps\:y\:back\:to\:x.}\\y=3x+5\\\mathrm{Interchange\:the\:variables}\:x\:\mathrm{and}\:y\\x=3y+5\\\mathrm{Solve}\:x=3y+5\:\mathrm{for}\:y\\\frac{x-5}{3}\\\frac{x-5}{3}

f-^1(x)=\frac{5}{3} + \frac{x}{3}

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Factor completely x3 + 7x2 + 3x + 21.help meeeee
Vlada [557]

Answer:

(x+7) (x^2+3)

Step-by-step explanation:

Add and subtract the second term to the expression and factor by grouping. Hope this helps!

4 0
3 years ago
Please help me I don’t know what to do
padilas [110]

X = 180° - (73° + 42°)

= 180° - 115°

X = 65°

Y = 180° - 131°

Y = 49°

→ 180° - (X + Y) =

→ 180° - (65° + 49°) =

→ 180° - 114° = 66°

Z = 180° - 66°

Z = 114°

8 0
3 years ago
Helppppp! please show your work!
Shtirlitz [24]

Answer:

90 - 37 will give a solid 53

Step-by-step explanation:

the two sums of A to C to C to B so 22.9(C, B) and 14.1 (A, C)

and know that this angle is 90 degrees, my guess would be to subtract the to given numbers with degrees to earn the sum so 22.9 + 14.1 equals 37

now we add angle degrees and sum and subtract one another,

90 - 37

6 0
3 years ago
For the function -2x²+x+1 find f(3)
nexus9112 [7]

Answer:

-14

Step-by-step explanation:

Plug 3 in for x

-2 (3)² + 3 + 1

-2 (9) + 3 + 1

-18 + 3 + 1

-14

3 0
3 years ago
Read 2 more answers
A bag of apples cost $5.50. How much do three bags cost if there is a 10% discount on your total sale?
kondaur [170]

Answer:

$14.85

Step-by-step explanation:

$5.50*3=$16.50

FInd 10% of $16.50, or $1.65

Subtract $16.40 and $1.65, and you get $14.85.

6 0
3 years ago
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