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77julia77 [94]
2 years ago
8

o figure out a special number, Tammi’s mother was supposed to double her age and then add 4. Instead, Tammi’s mother added 4 to

her age and then doubled that number. Tammi’s mother thought the special number was 80. What was the special number supposed to be?
Mathematics
2 answers:
Bumek [7]2 years ago
7 0

Answer:

40

her age was 36 she added 4nwhich made 40 then doubles makesn80

Ugo [173]2 years ago
4 0

9514 1404 393

Answer:

  76

Step-by-step explanation:

For age 'a', the special number was supposed to be ...

  2a +4

Tammi's mother actually calculated it as ...

  2(a +4) = 2a +8

a value that is (2a+8) -(2a+4) = 4 more than it was supposed to be.

The special number was supposed to be 80 -4 = 76.

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Answer:

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Hope I helped. Good luck on the assignment!

Step-by-step explanation:


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3 years ago
Plz solve i beg i really need help i beg u guys
Dmitry_Shevchenko [17]

check the picture below.


if ∡F = 90° and ∡D = 30°, then the ∡A = 60°, meaning the triangle is a 30-60-90 triangle and therefore we can use the 30-60-90 rule as  you see in the picture.


\bf \textit{area of a triangle}\\\\
A=\cfrac{1}{2}bh~~
\begin{cases}
b=base\\
h=height\\[-0.5em]
\hrulefill\\
h=7\sqrt{3}\\
b=7
\end{cases}\implies A=\cfrac{1}{2}(7)(7\sqrt{3})
\\\\\\
A=\cfrac{49\sqrt{3}}{2}\implies A\approx 42.43524478543749369142

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3 years ago
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Step-by-step explanation:

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