Please help with my math i am stuck please explain

Mathematics

1 answer:

joja [24]2 years ago

7 0

For the addition problem 1/4 would turn into 2/8 and the 3/8 would stay the same therefore it would be 2/8 + 3/8 =5/8. Then for the subtraction problem 1/4 would turn into 2/8 and 3/8 would stay the same therefore it would be 2/8 - 3/8 =1/8

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Cot y, if csc y =-10/3 and cos y< 0

fredd [130]

$\csc y=-\dfrac{10}3\implies\sin y=-\dfrac3{10}$

$\cos^2y=1-\sin^2y\implies \cos y=\pm\sqrt{1-\dfrac9{100}}=\pm\dfrac{\sqrt{91}}{10}$

You're told that $\cos y$ , so omit the positive root.

$\cot y=\dfrac{\cos y}{\sin y}=\dfrac{-\frac{\sqrt{91}}{10}}{-\frac3{10}}=\dfrac{\sqrt{91}}3$

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3 years ago

Jane is standing at the base of a 6300ft tall mountain. If she climbs 15% of the remaining height each day, how many feet will s

Andrews [41]

Answer:

Total ft climbed= 3,011.36

Step-by-step explanation:

<u>Giving the following information:</u>

Total ft= 6,300

Climbing rate= 15% of the remaining height per day

<u>Total ft climbed per day:</u>

Day 1= 6,300*0.15= 945

Day 2= (6,300 - 945)*0.15= 803.25

Day 3= (5,355 - 803.25)*0.15= 682.76

Day 4= (4,551.75 - 682.76)*0.15= 580.35

Total ft climbed= 3,011.36

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2 years ago

Can 3 points be Collinear

iren2701 [21]

Three and more points are collinear

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2 years ago

Read 2 more answers

Jayden has been reading a 275275275-page book for English class. On average, he has read about 101010 pages in 151515 minutes (\

maxonik [38]

First let's define variables:
r: reading
s: skimming
We write the system of equations that adapts to the problem:
r + s = 275
(15/10) r + (10/15) s = 355
We solve the system of equations:
r = 206
s = 69
Note: see attached image for system solution.
Answer:
Jayden had to skim 69 pages through