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Gemiola [76]
3 years ago
13

What is the value of the expression below?

Mathematics
2 answers:
Ghella [55]3 years ago
4 0

Answer:

A. 12

Step-by-step explanation:

use pemdas

4^4=16

20+8=28

28-16=12

Drupady [299]3 years ago
3 0

Answer:

12

Step-by-step explanation:

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(Sinθ-cosθ)(sinθ+cosθ)=1-2cos^2θ
ohaa [14]

Answer:

See below

Step-by-step explanation:

( \sin \theta -  \cos \theta)( \sin \theta  +  \cos \theta) = 1 - 2 { \cos}^{2}  \theta \\  \\ LHS   = ( \sin \theta -  \cos \theta)( \sin \theta  +  \cos \theta)  \\  \\  =  \sin^{2}  \theta -  \cos^{2}  \theta \\  \\  =1 -  \cos^{2}  \theta -  \cos^{2}  \theta \\( \because  \sin^{2}  \theta =1 -  \cos^{2}  \theta)  \\  \\  = 1 - 2 { \cos}^{2}  \theta   \\ = RHS

Thus proved

8 0
3 years ago
Martin is asked to find the probability of getting one head and three tails on for coin tosses this is a simple event
Georgia [21]
The possible outcomes for 1 HEAD and 3 TAILS are

HTTT
THTT
TTHT
TTTH

Assuming the coin is a fair coin, we have:
Probability of tossing head is 0.5
Probability of tossing tail is 0.5

Probability of tossing the coin four times for each outcome combination listed above is

HTTT = 0.5×0.5×0.5×0.5 = 0.0625
THTT = 0.5×0.5×0.5×0.5 = 0.0625
TTHT = 0.5×0.5×0.5×0.5 = 0.0625
TTTH = 0.5×0.5×0.5×0.5 = 0.0625

Hence, probability of getting three tails and one head from 4 tossing is 
4×0.0625 = 0.25
5 0
3 years ago
Some more fractions, with common denominators
kenny6666 [7]

Answer:

\frac{5}{6}-\frac{1}{9} = \frac{45}{54} -\frac{6}{54} = \frac{13}{18}

Step-by-step explanation:

An easy way to find a common denominator is to multiply the denominators against each other, like this:

(\frac{9}{9})\frac{5}{6}-\frac{1}{9} (\frac{6}{6})

Now, simplify:

\frac{45}{54}-\frac{6}{54}

Then, subtract:

\frac{39}{54}

Simplify:

\frac{13}{18}      (Divide numerator and denominator by 3)

Hope this helps!!

8 0
3 years ago
What is the value of P for the following solid figure?<br><br> PLEASE HELP ME SOLVE. So lost rn
allochka39001 [22]
I’m pretty sure it’s 30in
4 0
4 years ago
Read 2 more answers
I’m confused on this one
DanielleElmas [232]

The answer is C! For point "M" to move 180 degrees it has to move left as it's positioned on the right side for now. This eliminates answers A and D. Now, be sure to pay attention the trapezoid. Normally when shapes rotate 180, they completely flip and their coordinates are now located at different sides. Also, it is located at the "half-way mark" you can say. The answer is not B as the shape moved 270 degrees. Hope this helped :))

7 0
3 years ago
Read 2 more answers
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