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siniylev [52]
3 years ago
12

Please help me thank you in advance!

Mathematics
1 answer:
Oxana [17]3 years ago
7 0

Answer:

First option: (x+9)^2=81

Step-by-step explanation:

It has the same solution

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Y varies inversely as x. Find x when y = 3 if y = 15 when x = 2
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LAM 1 Mod 6 Question 4b-s2.
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The height, h, in meters above the ground, of a projectile at any time, t, in seconds, after the launch is defined by the functi
Ivanshal [37]
The equation h(t) =-6t^2 + 15t + 2 <span>sets the parabola. You can find the parabola vertex as:
</span>
t_v= \frac{-b}{2a} =- \frac{15}{2\cdot (-6)} = \frac{15}{12}= \frac{5}{4}=1.25

then 

h( \frac{5}{4} )=-6\cdot  (\frac{5}{4} )^2+15\cdot \frac{5}{4} +2= \frac{91}{8} =11.375

This means that the maximum height is 11.375 m and <span>a projectilereaches this height at 1.25 seconds.</span><span /><span>
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6 0
4 years ago
❤️ i need this last question
spayn [35]

Answer: 10\left(\cos90^{\circ}+i\sin90^{\circ}\right)

Step-by-step explanation:

Given

The complex number is z_1=0+10i

Complex number in polar form is given by

z=r\left(\cos \theta +i\sin \theta\right)

Compare it with the given complex number

r=10 and \sin \theta=1 which implies \theta must be 90^{\circ}

So, in the polar form, it is

z_1=10\left(\cos90^{\circ}+i\sin90^{\circ}\right)\\z_1=10e^{i\frac{\pi}{2}}

4 0
3 years ago
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