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3 years ago

PLeaseee answer correctly if u want brainelsit and 10 pts! first one will get rewarded :)

Mathematics

2 answers:

melisa1 [442]3 years ago

5 0

Answer:

Step-by-step explanation:

The water decreases 3 cm per day.

Alex_Xolod [135]3 years ago

4 0

Answer: i believe its the third answer

Step-by-step explanation:

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Bryanna performed an experiment in which she flipped a coin and recorded the results. She got heads up 23 times and tails up 27

AlexFokin [52]

Answer:

if you are asking the probability of heads vs tails, then its a 50/50 most of the time, just in this situation, there was 1% more chance to get tails.

Step-by-step explanation:

still 50/50, because .01 is a very small number.

7 0

3 years ago

Warren was drawing a shape on the grid below. He started at (2,0) and drew a line to (2,5), then to (4,3), then to (6,5) and fin

Fofino [41]

Answer:

concave pentagon

Step-by-step explanation:

5 0

3 years ago

What is the length of the hypotenuse of the triangle?

igor_vitrenko [27]

Answer:

The answer is 37.

Step-by-step explanation:

#Hope it helps uh.......

8 0

3 years ago

Question 9

Alenkasestr [34]

Answer:

$PX=4\\PY=4\sqrt{3}$

Step-by-step explanation:

Let $\angle PYZ=Q$

$\Rightarrow \angle XYP=90-\angle PYZ\\\angle XYP=90-\theta$

In the $\Delta PYZ$

$\tan\theta =\frac{opposite}{adjacent}=\frac{PZ}{PY}......(1)$

In the $\Delta YPX$

$\tan(90-\theta)=\frac{opposite}{adjacent}=\frac{PX}{PY}$

$\cot=\frac{PX}{PY}....(2)$

eqn(1) $\times$ eqn(2)

$\tan\times\cot\theta=\frac{PZ}{PY}\times\frac{PX}{PY}\\\\1=\frac{PZ\times PX}{PY^2}\ \ (as\ tan\theta\ =\frac{1}{\cot\theta})\\\\PY^2=PZ\times PX\\PY^2=12PX.......(3)$

Now in $\Delta XYP$

use Pythagorean theorem

$XY^2=PY^2+PX^2\\8^2=PY^2+PX^2\ \ (as\ XY\ =8)\\PX^2+PY^2=64\\\\PY^2=12PX\ \ (eqn(3)\\\\\Rightarrow PX^2+12PX=64\\\\PX^2+12PX-64=0\\\\PX^2+16-4PX-64=0\\\\(PX+16)(PX-4)=0\\\\PX=4,\ -16$

Length can not be negative

Hence $PX=4$

$PY^2=12PX=12\times4=48\\\\PY=\sqrt{48}=4\sqrt{3}$

Hence $PX=4,\ PY=4\sqrt{3}$

8 0

3 years ago

Answer please due today

mezya [45]

Answer:

CD=9

Step-by-step explanation:

ΔABD=>

AD²=AB² + BD² [Pythagorean Theorem]

BD²= AD²-AB²

BD²=9²-3²

BD²=72

BD=√72=6√2....(1)

ΔBCD=>

CD²=BD²+BC²

CD²=(6√2)² + 3²

CD²=72+9

CD²=81

CD=√81

CD=9

5 0

3 years ago