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3 years ago

Can someone help me? Thanks!

Mathematics

2 answers:

Alenkinab [10]3 years ago

7 0

Answer:

Step-by-step explanation:

a^2+b^2=c^2 is the pythagorean theorem

solution a just has it flipped around

kogti [31]3 years ago

6 0

Answer:

Step-by-step explanation:

a^2+b^2=c^2 is the pythagorean theorem

solution a just has it flipped around

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The weekly cost (C) of growing and selling x acres of flowers is approximated by C = 0.2x2 – 12x + 240. How many acres of flower

Anna71 [15]

To determine how many acres would minimize cost, we need to differentiate the expression given and set it to zero and obtain the value of x. We do as follows:

C(x) = 0.2x^2 - 12x +240
C'(x) = 0.4x - 12
0 = 0.4x - 12
x = 30 acres <---------amount of flowers needed to minimize cost

3 0

3 years ago

What is the measurement of PQ?

Sholpan [36]

<em>The measure of PQ is 12.72</em>

<h2>Explanation:</h2>

We have the right triangle ΔPQR and we want to know the measure of PQ. PQ is opposite to ∠R, so from trigonometry we know that:

$sin(\alpha)=\frac{Opposite \ side}{Hypotenuse} \\ \\ \\ Here: \\ \\ \alpha=m\angle R=58^{\circ} \\ \\ Opposite \ side=\overline{PQ} \\ \\ Hypotenuse=\overline{RQ}=15 \\ \\ \\ So: \\ \\ sin(58^{\circ})=\frac{\overline{PQ}}{15} \\ \\ \\ Isolating \ \overline{PQ}: \\ \\ \overline{PQ}=15sin(58^{\circ}) \\ \\ \overline{PQ}=15(0.848)\\ \\ \boxed{\overline{PQ}=12.72}$

<h2>Learn more:</h2>

Right triangles: brainly.com/question/10252821

#LearnWithBrainly

7 0

4 years ago

48 ÷ [(13 – 6) — 6°] + 4 - 2 =

kvasek [131]

Answer:

brainlest plzzzzzz 50

Step-by-step explanation:

pemdas

so u you do brackets first

13-6=7

7-6=1

next you do multiplication and division

48/1=48

next is addition and subtraction

48+4=52

52-2=50

so you awnswer is 50

6 0

3 years ago

In the addition problem at the right, each letter stands for a digit and different letters stand for different digits. What digi

AVprozaik [17]

In the addition problem attached, the letters H = 2, E = 3, A = 9. See the explanation below.

<h3>What is the explanation for the above?</h3>

In the problem, A depicts a single digit i.e; A < 9.

=> 4H<10

=>H<3

i.e; H should be 1 or 2.

In units column, 4E should have H in units place in the result. i.e; 1 or 2

As 4E is always an even number, H cannot be 1.

=> H = 2

If H = 2, E can be 3 or 8 for 4E to end in 2.

If E = 8, the result will be a three-digit number => E = 3

So if H = 2 and E = 3

A = 9

Therefore, the letters

H = 2,

E = 3, and

A = 9.

Learn more about addition problems:
brainly.com/question/24530307
#SPJ1

5 0

2 years ago

The acceleration of an object (in m/s^2) is given by the function a(t) = 9 sin(t). The initial velocity of the object is v(0) =

pentagon [3]

a) Acceleration is the derivative of velocity. By the fundamental theorem of calculus,

$v(t)=v(0)+\displaystyle\int_0^ta(u)\,\mathrm du$

so that

$v(t)=\left(-11\frac{\rm m}{\rm s}\right)+\int_0^t9\sin u\,\mathrm du$

$\boxed{v(t)=-\left(2+9\cos t)\right)\frac{\rm m}{\rm s}}$

b) We get the displacement by integrating the velocity function like above. Assume the object starts at the origin, so that its initial position is $s(0)=0\,\mathrm m$ . Then its displacement over the time interval [0, 3] is

$s(0)+\displaystyle\int_0^3v(t)\,\mathrm dt=-\int_0^3(2+9\cos t)\,\mathrm dt=\boxed{-6-9\sin3}$

c) The total distance traveled is the integral of the absolute value of the velocity function:

$s(0)+\displaystyle\int_0^3|v(t)|\,\mathrm dt$

$v(t)$ for $0\le t$ and $v(t)\ge0$ for $\cos^{-1}\left(-\frac29\right)\le t\le3$ , so we split the integral into two as

$\displaystyle\int_0^{\cos^{-1}\left(-\frac29\right)}-v(t)\,\mathrm dt+\int_{\cos^{-1}\left(-\frac29\right)}^3v(t)\,\mathrm dt$

$=\displaystyle\int_0^{\cos^{-1}\left(-\frac29\right)}(2+9\cos t)\,\mathrm dt-\int_{\cos^{-1}\left(-\frac29\right)}^3(2+9\cos t)\,\mathrm dt$

$\displaystyle=\boxed{2\sqrt{77}-6+4\cos^{-1}\left(-\frac29\right)-9\sin3}$

4 0

3 years ago