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2 years ago

14

What is cos 0 when sin 0 = 2/5

1 answer:

Goshia [24]2 years ago

7 0

Answer:

cos 0 = 1

.................

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Solve the equation. 6x=2x^2+1

7nadin3 [17]

6x = 2x^2 + 1
2x^2 - 6x + 1 = 0
$x= \frac{-(-6) \pm \sqrt{(-6)^2-(4 \times 2 \times 1)}}{2 \times 2}\\=\frac{6\pm\sqrt{36-8}}{4}\\=\frac{6\pm\sqrt{28}}{4}\\=\frac{6\pm2\sqrt{7}}{4}\\=\frac{3\pm\sqrt{7}}{2}\\=\frac{3+\sqrt{7}}{2}\,or\,\frac{3-\sqrt{7}}{2}$

7 0

2 years ago

Odell Gleaves delivers Danberry Real Estate calendars to town residents after

disa [49]

Answer: $4.34

Step-by-step explanation:

Mon: 0.6x100= 60 cents

Tue: 0.6x130= 78 cents

Wed: 0.6x145= 87 cents

Thurs: 0.6x138= 82.8 cents

Fri: 0.6x210= 126 cents

60+78+87+82.8+126= 433.8 cents

There are 100 cents in a dollar

4.33.8 cents, so 4.34 if you round up (if the last number is five or greater round up)

4 0

3 years ago

PLEASE HELP! I Have Attached pictures of the question and poem.

iren2701 [21]

They seem to be very descriptive and use lots of examples of nature.

7 0

3 years ago

Someone please help me on both the questions!!!

bonufazy [111]

Step-by-step explanation:

al nth term:

numerator:

$= {n}^{2}$

denominator:

$= n + 1$

so nth term :

$= \frac{ {n}^{2} }{n + 1}$

b). 1; 11; 27; 49

first difference: 10; 16; 22

second difference :6

formula for 1st difference:3a+b

formula for 2nd difference:2a

Therefore:

2a=6

a=3

3a+b=10

sub in a

3(3)+b=10

9+b=10

b=1

sub into quadratic formula

${an}^{2} + bn + c$

$(3) {(1)}^{2} + (1)(1) + c = 1$

$3(1) + 1 + c = 1$

$3 + 1 + c = 1$

$4 + c = 1$

$c = - 3$

So Tn:

$3 {n }^{2} + 1n - 3$

7 0

2 years ago

Read 2 more answers

if x/b-c=y/c-a=z/a-b, prove that x+y+x=0.please help me ... this is my homework. I will follow you plz . anyone.

irinina [24]

Answer:

.......... I Got You <3

Hope you can read it

4 0

2 years ago