All categories

2 years ago

Please help! Will mark brainliest! :)

Mathematics

2 answers:

fomenos2 years ago

5 0

Answer:

Step-by-step explanation:

if t is in the 4th quadrant, sin(t) <0

$sin(t)\\=-\sqrt{1-cos^2(t)} \\\\=\sqrt{1-\dfrac{9}{49} } \\\\=-\sqrt{\dfrac{40}{49} } \\\\=-\dfrac{2*\sqrt{10} }{7} \\$

AURORKA [14]2 years ago

4 0

Answer: - 2/10

Step-by-step explanation: i cant write the right shapes because it isnt available on anybody's keyboard

You might be interested in

H e l ppppppppppp

Vikentia [17]

Answer:

(Please vote me Brainliest if this helped!)

Letter A

Step-by-step explanation:

Pythagorean Triples $c^2=a^2+b^2$

A) Not a Pythagorean Triple

$40^2=12^2+35^2$ : 1,600 ≠ 144 + 1,225

B) Pythagorean Triple

$53^{2} = 28^{2} + 45^{2} :$ 2,809 = 784 + 2,025

C) Pythagorean Triple

$65^2= 33^2+56^2$ : 4,225 = 1,089 + 3,136

D) Pythagorean Triple

$85^{2} = 36^{2} + 77^{2}$ : 7,225 = 1,296 + 5,929

3 0

3 years ago

Read 2 more answers

Assume the random variable X is normally distributed with mean muequals50 and standard deviation sigmaequals7. Find the 87 th pe

serious [3.7K]

Answer:

57.885

Step-by-step explanation:

For such calculations a probability calculator is very helpful. The one in the attachment shows the 87th percentile to be 57.885.

___

A table of the standard normal distribution will tell you the 87th percentile corresponds to a z-value of 1.12639. Then the X value is ...

X = Zσ +μ = 1.12639(7) +50 = 57.885

7 0

3 years ago

Please Help will Give brainlist.

poizon [28]

Constant of proportionality is 4

equation: x/y = 4

explanation:
let's take 20 and 5 for example, if you divide 20 by 5, you will 4 of course. that's the proportionality for the first one. if you continue to divide x value by y value you will get 4. for the last two you would divide 28 by 4 and multiply 8 by 4.

5 0

2 years ago

Read 2 more answers

Find the product.

IrinaK [193]

(2n+1)(2n-1)(n+5)
=(4n^2+2n-2n-1)(n+5)
=(4n^2-1)(n+5)
=4n^3-n+20n^2-5
4n^3+20n^2-n-5

4 0

2 years ago

What is the measure of ∠HFG?<br> (See attachment)

madam [21]

92 degrees

Triangle= 180 degrees
180-60-28= 92

:)

7 0

3 years ago