3 years ago

How do i study for exams last minute?

Mathematics

2 answers:

bogdanovich [222]3 years ago

7 0

Youtube videos and looking at old assignments.

vichka [17]3 years ago

3 0

YouTube and Quizlet will get you places in life.

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Which expression is equivalent to 38*5? 150+13 185-13 190+40 200-10

ratelena [41]

38×5 is 190

200-10 is the only thing that makes 190 therefore your answer is the last one!

hope this helped

8 0

3 years ago

Question 83 true or false and why ? plz ryt answer thanks

Vikki [24]

The answer is false.

The formula for the SA of a cone is $\pi r^{2}+\pi rl$ where r is the radius of the base and l is the slant height.
Since we have both the slant's height and the radius of the base we can answer this just by plugging numbers in;
$SA=\pi r^{2}+\pi rl\\
SA=\pi (2^{2})+\pi (2)(6)\\
SA=4\pi+12\pi\\
SA=16\pi\\$
$16\pi$ ≈50.2654...

So your answer is false.

6 0

4 years ago

❗25 POINTS❗ ...................................................

dalvyx [7]

Answer:

Step-by-step explanation:

6 0

3 years ago

A rectangle has an area of 20 ft.² in a similar rectangle has an area of 180 ft.² what is the ratio of areas of the similar

vovikov84 [41]

$\bf \qquad \qquad \textit{ratio relations}
\\\\
\begin{array}{cccllll}
&Sides&Area&Volume\\
&-----&-----&-----\\
\cfrac{\textit{similar shape}}{\textit{similar shape}}&\cfrac{s}{s}&\cfrac{s^2}{s^2}&\cfrac{s^3}{s^3}
\end{array}\\\\
-----------------------------\\\\$

$\bf \cfrac{\textit{similar shape}}{\textit{similar shape}}\qquad \cfrac{s^2}{s^2}=\cfrac{20}{180}\implies \left( \cfrac{s}{s} \right)^2=\cfrac{20}{180}\implies \cfrac{s}{s}=\sqrt{\cfrac{20}{180}}
\\\\\\
\cfrac{s}{s}=\cfrac{\sqrt{20}}{\sqrt{180}}\implies \cfrac{s}{s}=\cfrac{2\sqrt{5}}{6\sqrt{5}}\implies \cfrac{s}{s}=\cfrac{2}{6}\implies \cfrac{s}{s}=\cfrac{1}{3}$

6 0

4 years ago

50 000 000 = 3000 * 2.6^t How do I find t?

Lena [83]

Step-by-step explanation:

50000000=3000*2.6^t.

2.6^t=50000÷3

t÷2.6=50000÷3

t=50000*2.6÷3

3 0

3 years ago