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3 years ago

Help me on #13 and please explain

Mathematics

1 answer:

hichkok12 [17]3 years ago

4 0

Answer:

56.4°

Step-by-step explanation:

Let θ = the angle of elevation. Then

tanθ = 199/132 = 1.508

θ = arctan1.508

θ = 56.4°

The angle of elevation is 56.4°.

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What is -6/2 simplified

sineoko [7]

The simplest form of
6
2
is
3
1
.

Steps to simplifying fractions

Find the GCD (or HCF) of numerator and denominator
GCD of 6 and 2 is 2
Divide both the numerator and denominator by the GCD
6 ÷ 2
2 ÷ 2
Reduced fraction:
3
1

Therefore, 6/2 simplified to lowest terms is 3/1.

8 0

3 years ago

Read 2 more answers

Pls, it’s for a test , ;< . I Wanna actually Get a good grade. PLS HELP you will get 20 points

kow [346]

Answer: B. y=9
Explanation: divide both sides of the equation by three
y3/3 = y
27/3=9
y=9
hope this helps:)

7 0

3 years ago

Read 2 more answers

» Alexander has some watermelons. He gathers 13 more watermelons. He now has 62 watermelons.

Vilka [71]

Yeah but what is the question?

3 0

3 years ago

Find the numbers b such that the average value of f(x) = 7 + 10x − 9x2 on the interval [0, b] is equal to 8.

barxatty [35]

Answer:

The numbers $b$ such that the average value of $f(x) = 7 +10\cdot x - 9\cdot x^{2}$ on the interval [0, b] is equal to 8 are $b_{1} \approx 1.434$ and $b_{2} \approx 0.232$ .

Step-by-step explanation:

The mean value of function within a given interval is given by the following integral:

$\bar f = \frac{1}{b-a}\cdot \int\limits^b_a {f(x)} \, dx$

If $f(x) = 7 +10\cdot x - 9\cdot x^{2}$ , $a = 0$ , $b = b$ and $\bar f = 8$ , then:

$\frac{1}{b}\cdot \int\limits^b_0 {7+10\cdot x -9\cdot x^{2}} \, dx = 8$

$\frac{7}{b}\int\limits^b_0 \, dx + \frac{10}{b} \int\limits^b_0 {x}\, dx - \frac{9}{b} \int\limits^b_0 {x^{2}}\, dx = 8$

$\left(\frac{7}{b} \right)\cdot b + \left(\frac{10}{b} \right)\cdot \left(\frac{b^{2}}{2} \right)-\left(\frac{9}{b} \right)\cdot \left(\frac{b^{3}}{3} \right) = 8$

$7 + 5\cdot b - 3\cdot b^{2} = 8$

$3\cdot b^{2}-5\cdot b +1 = 0$

The roots of this polynomial are determined by the Quadratic Formula:

$b_{1} \approx 1.434$ and $b_{2} \approx 0.232$ .

The numbers $b$ such that the average value of $f(x) = 7 +10\cdot x - 9\cdot x^{2}$ on the interval [0, b] is equal to 8 are $b_{1} \approx 1.434$ and $b_{2} \approx 0.232$ .

7 0

3 years ago

Clara has a package of six cookies she wants to share equally among her friends if Claire make sure that each piece of cookie wi

Nikolay [14]

Answer:

Clara can feed 10 friend

I may be wrong, but I tried :P

8 0

4 years ago