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3 years ago

Can sum1 help me with this question

Mathematics

2 answers:

lutik1710 [3]3 years ago

8 0

Answer:

Second option is the correct choice.

Step-by-step explanation:

Thanks!

larisa86 [58]3 years ago

6 0

Height of the balls after two bounces is

52/100 × (0.52 ×0.5) = 0.52 × 0.52 × 0.5
= 0.52^2 × 0.5 m

Therefore the series turns into 0.5,0.5(0.52),0.5(0.52)^2,....

So by finding the height f(n) after n bounces would be
f(n) = 0.5(0.52)^n-1

To get the height of the ball of the third path, we need to put n=3

f(3)= 0.5(0.52)^3-1
=0.5(0.52)^2
=0.14m

Answer: B ) 0.5 × (0.52)^n-1 ; 0.14m

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What is 1/5 (g - 10). <br><br> I need a answer! <br> Thanks for the help .

ICE Princess25 [194]

What do u bealive or think g is

7 0

3 years ago

Please help me!!! I suck at math :((

stiks02 [169]

If we know that line $AB$ is equal to line $AD$ , then this means that ∠ $ADB$ has to be equal to ∠ $ABD$ in order to form a closed triangle. All angle measures of a triangle add up to $180$ °, so use the equation: $2(35) + x = 180$ .

70 + x = 180

Subtract 70 from both sides to isolate x:

180 - 70 = 110

110 = x

Hope this helped.

7 0

3 years ago

What is the value of 4/5 minus 2/3?<br><img src="https://tex.z-dn.net/?f=4%2F5%20%20-%20%202%2F3" id="TexFormula1" title="4/5 -

Dafna1 [17]

2/15

4/5-2/3

convert so they have the same denominator

12/15-10/15

solve

2/15

4 0

2 years ago

I don't need you to work it out, just theorem(s) i need to reach the answer :)

VikaD [51]

Not sure why such an old question is showing up on my feed...

Anyway, let $x=\tan^{-1}\dfrac43$ and $y=\sin^{-1}\dfrac35$ . Then we want to find the exact value of $\cos(x-y)$ .

Use the angle difference identity:

$\cos(x-y)=\cos x\cos y+\sin x\sin y$

and right away we find $\sin y=\dfrac35$ . By the Pythagorean theorem, we also find $\cos y=\dfrac45$ . (Actually, this could potentially be negative, but let's assume all angles are in the first quadrant for convenience.)

Meanwhile, if $\tan x=\dfrac43$ , then (by Pythagorean theorem) $\sec x=\dfrac53$ , so $\cos x=\dfrac35$ . And from this, $\sin x=\dfrac45$ .

So,

$\cos\left(\tan^{-1}\dfrac43-\sin^{-1}\dfrac35\right)=\dfrac35\cdot\dfrac45+\dfrac45\cdot\dfrac35=\dfrac{24}{25}$

7 0

4 years ago

I need to know how to solve this problem because I’m very confused and it doesn’t explain what it is or how to do it in my textb

Lostsunrise [7]

Answer:

x1 = -4; x2 = 10

Step-by-step explanation:

1) Expand the module as two separate equations:

x - 3 = 7

x - 3 = -7

2) Solve the equations:

x = 10

x = -4

=> x1 = -4; x2 = 10

5 0

3 years ago