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2 years ago

The Smith family went out to dinner and received great service. They decided to

Mathematics

2 answers:

nikitadnepr [17]2 years ago

4 0

Answer:

$75

Step-by-step explanation:

90=1.2x

90/1.2=x

75=x

steposvetlana [31]2 years ago

4 0

Answer:

$75 :D

Step-by-step explanation:

90=1.2x 90/1.2=x 75=x

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Help please?

Alla [95]

$\bf \begin{array}{clclll}
3^{1001}&\qquad &4^{1002}\\
\uparrow &&\uparrow \\
a&&b
\end{array}\\\\
-----------------------------\\\\
(a+b)^2-(a-b)^2\implies (a^2+2ab+b^2)-(a^2-2ab+b^2)
\\\\\\
a^2+2ab+b^2-a^2+2ab-b^2\implies 2ab+2ab\implies 4ab
\\\\\\
now\qquad 4(3^{1001})(4^{1002})=k12^{1001}\qquad 
\begin{cases}
12^{1001}\\
(4\cdot 3)^{1001}\\
4^{1001}\cdot 3^{1001}
\end{cases}$

$\bf \\\\\\
4(3^{1001})(4^{1002})=k(4^{1001}\cdot 3^{1001})\implies \cfrac{4(3^{1001})(4^{1002})}{4^{1001}\cdot 3^{1001}}=k
\\\\\\
4\cdot \cfrac{3^{1001}}{3^{1001}}\cdot \cfrac{4^{1002}}{4^{1001}}=k\implies 4\cdot 4^{1002}4^{-1001}=k\impliedby 
\begin{array}{llll}
\textit{same base}\\
\textit{add the}\\
exponents
\end{array}
\\\\\\
4\cdot 4^{1002-1001}=k\implies 4\cdot 4^1=k\implies 16=k$

6 0

3 years ago

What is the surface area of this shape

Arlecino [84]

Answer:

54 i think

Step-by-step explanation:

3 0

3 years ago

Solve for x in terms of y: 5y = 3x + 2

Ipatiy [6.2K]

Answer:

3/5

Step-by-step explanation:y

put in slop intersect form y=3/5x + 2/5 = 3/5

4 0

3 years ago

he function a = –2x2 + 8x + 5 models the altitude a in feet of a ball thrown in the air and the horizontal distance in feet that

frozen [14]

Answer:

for part b the vertex is (2, 13)

Step-by-step explanation:

no (ice)

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2 years ago

Rolf spent 15 hours last week practicing his saxophone. If 3/10 of the time was spent practicing warm up routines, how much time

agasfer [191]

Four point five (4.5)

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2 years ago