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Sergio039 [100]
3 years ago
14

Expand & simplify: (x + 1)(x + 3)

Mathematics
2 answers:
Sindrei [870]3 years ago
5 0

Answer:

368

Step-by-step explanation:

Romashka [77]3 years ago
4 0

Answer:

x squared+ 4x + 4

Step-by-step explanation:

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What is the sales tax on a chair with a price tag of $180, if the tax rate is 5.75%?
Anuta_ua [19.1K]

Answer:

$190.35

Step-by-step explanation:

180 ⋅ 0.0575 = 10.35

Add 180 to 10.35

$190.35

(I could be wrong. Sorry if I am)

Hope I helped :)

Please consider Brainliest :)

8 0
3 years ago
Sam and Jeremy have ages that are consecutive odd integers. The product of their ages is 783, which equation could be used to fi
stepladder [879]
(2x+1)=Jeremy´s age
(2x+3)=Sam´s age.
we suggest this equation:
(2x+1)(2x+3)=783
4x²+6x+2x+3=783
4x²+8x-780=0
x²+2x-195=0

We solve this quadratic equation:
x=[-2⁺₋√(4-4*1*(-195))]/2=(-2⁺₋28)/2

x₁=(-2-28)/2=-15 this solution is not valid.
x₂=(-2+28)/2=13

Jeremy´s age=2x+1=2*13+1=27
Sam´s age=2x+3=2*13+3=29



7 0
3 years ago
Find the inverse of f(x)=2x-1
solong [7]

{ \qquad\qquad\huge\underline{{\sf Answer}}}

Let's find the inverse of given function ~

\qquad \sf  \dashrightarrow \: f(x) = 2x - 1

\qquad \sf  \dashrightarrow \: 2x = f(x) + 1

\qquad \sf  \dashrightarrow \: x =  \cfrac{f(x) + 1}{2}

[ now, replace f(x) and x with \sf{ {f}^{-1}(x)} ]

\qquad \sf  \dashrightarrow \: f {}^{ - 1} (x) =  \cfrac{x + 1}{2}

That's the required inverse function ~

8 0
1 year ago
Read 2 more answers
Luis made some trail mix. he mixed 4 and 2/3 cups of popcorn, 1 and 1/4 cups of peanuts, 1 and 1/3 of raisins, and 3/4 cup of su
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Add 4and 2/3 cups, 1 and 1/4 cups,1 and 1/3 cups and 3/4 cups all together and divide it by 5
3 0
3 years ago
Need to know answers in box
leonid [27]
Min = 31
med = 44
max = 57
lq = 38
uq = 51
iqr = 13
3 0
3 years ago
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