3 years ago

The height of a model rocket, H(t), is a function of the time since it was launched, t.

Mathematics

1 answer:

laiz [17]3 years ago

7 0

I believe its either A or C

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How do you multiply by 9s

elixir [45]

Answer:

count that many 9s by the number your multiplying by.

Step-by-step explanation:

so example think of it like this =

9 x 9

9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 81

9 x 9 = 81

that easy ! just add the amount of 9s to the number your multiplying by . if u still need help, go on You Tube and search MathAntics .. he explains every different types of math amazing !

8 0

3 years ago

Is this an identity? <br> 1+sec^2x=tan^2x

amid [387]

No, the correct identity is $\tan^2(x)+1=\sec^2(x)$ . It is obtained by dividing the both sides of the Pythagorean Trigonometric Identity by cos²(x):

$\sin^2(x)+\cos^2(x)=1\\\\
\dfrac{\sin^2(x)+\cos^2(x)}{\cos^2(x)}=\dfrac{1}{\cos^2(x)}\\\\
\dfrac{\sin^2(x)}{\cos^2(x)}+\dfrac{\cos^2(x)}{\cos^2(x)}=\dfrac{1}{\cos^2(x)}\\\\
\boxed{\tan^2(x)+1=\sec^2(x)}~~\blacksquare$

6 0

4 years ago

Consider the following system of equations:

jenyasd209 [6]

Y=-x+10
2x+3(-x+10)=45
2x+-3x+30=45
2x+-3x=15
-x=15
X=15

4 0

3 years ago

Mr. Robins earns a commission on each airfare he books. At the end of the day, he had booked $208.60 worth of airfare and earned

muminat

Answer:

the answer in 15% because if you do $208.60 multiplied by 15% you get $31.29.

Step-by-step explanation:

8 0

3 years ago

Write this in an equation: 5 less than a number is twice the sum of that number and 9

pochemuha

Answer:

n-5=2n+9

Step-by-step explanation:

3 0

2 years ago