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3 years ago

6

inhale REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

1 answer:

Bezzdna [24]3 years ago

4 0

-15/8.....................

You might be interested in

Help I have 10 mins.

Paul [167]

Answer:

$\sqrt{0.5}$

Step-by-step explanation:

cosx=adj/hyp

adj= $\sqrt{2}$ /2

hyp= r

cos(45)= ( $\sqrt{2}$ /2)/r

$\sqrt{2}$ /2 = ( $\sqrt{2}$ /2)/r

multiply both sides by r

( $\sqrt{2}$ /2)r = $\sqrt{2}$ /2

divide both sides by $\sqrt{2}$ /2

r = 1

pythagorean theorem: $a^{2}$ + $b^{2}$ = $c^{2}$

a = $\sqrt{2}$ /2

b = y

c = r = 1

$(\sqrt{2}/2)^{2}$ + $y^{2}$ = $1^{2}$

$(\sqrt{2}/2)^{2}$ = 2/4 = 0.5

0.5 + $y^{2}$ = 1

subtract 0.5 from 1

$y^{2}$ = 0.5

$\sqrt{y^{2}}$ = $\sqrt{0.5}$

y = $\sqrt{0.5}$

7 0

3 years ago

The equation x= -7y^2 describes a parabola. Which way does the parabola open?

Nutka1998 [239]

Answer:

Downwards

Step-by-step explanation:

8 0

2 years ago

Solving quadratic equation using the completing the square (a).<br>9k²+5k=2

garik1379 [7]

Answer:

06959399449444rifotvovty5

6 0

3 years ago

Work out the equation of a line which has a gradient of 1/2 and passes through the point 4,-2? Pls answer i dont know

zimovet [89]

Answer:

y-y1=m (x- x1)…………..(1)

Here m=1/2 and (x1,y1)= (4,-2)

(1) => y-4=1/2(x+2)

=> 2y-8=x+2

=> x-2y-10=0

So, equation of line is x-2y-10=0.

7 0

3 years ago

Super Store sells 3 blue pencils for $0.75 and Mighty Mart sells 23 of the same kind of blue pencils for $4.60 . What proportion

just olya [345]

Step-by-step explanation:

Super Store individual pen price = 0.75/3

Mighty Mart individual pen price = 4.60/23

Super Store sells pens at $0.25 each while Mighty Mart sells pens at $0.20 each

4 0

3 years ago