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rosijanka [135]

2 years ago

14

I need help with this answer?

1 answer:

Ipatiy [6.2K]2 years ago

3 0

Answer:

The value of angle A is approximately 41.8.

Step-by-step explanation:

In order to find the value of angle A, I used the inverse sine function, where I input a ratio between the opposite and hypotenuse: 4/6, and got the answer.

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5. Mrs. Hoskins is going to plant her new

iragen [17]

She would spend $16.11 dollars on her new garden.

5 0

3 years ago

Cho tam giác ABC vuông tại A < góc B=a chứng minh: a) 1+<img src="https://tex.z-dn.net/?f=tan%5E%7B2%7D" id="TexFormula1" tit

dimaraw [331]

<h3><u>L</u><u>H</u><u>S</u><u>:</u><u>-</u></h3>

$\\ \sf\longmapsto 1+tan^2A$

$\boxed{\sf tanA=\dfrac{sinA}{cosA}}$

$\\ \sf\longmapsto 1+\dfrac{sin^2A}{cos^2A}$

$\\ \sf\longmapsto \dfrac{cos^2A+sin^2A}{cos^2A}$

$\boxed{\sf cos^2A+sin^2A=1}$

$\\ \sf\longmapsto \dfrac{1}{cos^2A}$

$\\ \sf\longmapsto \dfrac{1}{1-sin^2A}$

$\\ \sf\longmapsto \dfrac{1}{1}-\dfrac{1}{sin^2A}$

$\\ \sf\longmapsto \dfrac{1}{sin^2A}$

Hence verified

8 0

3 years ago

Brynn and Denise launch their rockets at the same time. The height of Brynn’s rocket, in meters, is given by the function f(x)=-

Vladimir [108]

Answer:

The height of rocket is 102.7 meter.

Step-by-step explanation:

Given : Brynn and Denise launch their rockets at the same time.

The height of Brynn’s rocket, in meters, is given by the function $f(x)=-4.9x^2+75x$ , where x is the number of seconds after the launch.

The height of Denise’s rocket, in meters, is given by the function

$g(x)=-4.9x^2+50x+38$ , where x is the number of seconds after the launch.

There is a moment when the rockets are at the same height.

To find : The height

Solution :

When the rockets have same height

So, $f(x)=g(x)$

$-4.9x^2+75x=-4.9x^2+50x+38$

$-4.9x^2+75x+4.9x^2-50x=38$

$25x=38$

$x=\frac{38}{25}$

$x=1.52$

Now, we put x value in any of the function to find height.

$f(x)=-4.9x^2+75x$ , x=1.52

$f(x)=-4.9(1.52)^2+75(1.52)$

$f(x)=-11.32096+114$

$f(x)=102.67$

Nearest tenth = 102.7

Therefore, The height of rocket is 102.7 meter.

8 0

3 years ago

Read 2 more answers

Find the sum of -2.5, -3 and 6.7

Alja [10]

The sum of -2.5, -3 and 6.7 is 1.2

4 0

3 years ago

You have $36 in your lunch account and plan to spend $4 each school day for lunch.

Wewaii [24]

Answer: $36/$4=9 days

Step-by-step explanation:

8 0

3 years ago