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3 years ago

In two or more complete sentences, use your knowledge of the unit circle to describe why the following trigonometric

Mathematics

1 answer:

JulsSmile [24]3 years ago

7 0

Should be 59.490 just because if you have to round the tenth and the hundredth together

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Bars of soap come in packages of 2 and packages of 8. The 2-bar pack costs $1.98, and the 8-bar pack costs $8.88. Which is the b

Sunny_sXe [5.5K]

Answer:

the answer is 2-bar pack that costs 1.98, it is 0.99 per bar.

Step-by-step explanation:

divide $1.98 and 2 which comes to $0.99 then divide $8.88 and 8 which comes to $1.11 so 0.99 is cheaper and the better deal

7 0

2 years ago

Simplify 2/5 + 1/3 I NEED THIS ASAP

lana66690 [7]

Answer:

(11/15)'s

Step-by-step explanation:

(2/5) is equal to (6/15)

(1/3) is equal to (5/15)

(5/15)+(6/15)=(11/15)

5 0

3 years ago

A tank contains 30 lb of salt dissolved in 300 gallons of water. a brine solution is pumped into the tank at a rate of 3 gal/min

sesenic [268]

$A'(t)=(\text{flow rate in})(\text{inflow concentration})-(\text{flow rate out})(\text{outflow concentration})$
$\implies A'(t)=\dfrac{3\text{ gal}}{1\text{ min}}\cdot\left(2+\sin\dfrac t4\right)\dfrac{\text{lb}}{\text{gal}}-\dfrac{3\text{ gal}}{1\text{ min}}\cdot\dfrac{A(t)\text{ lb}}{300+(3-3)t\text{ gal}}$
$A'(t)+\dfrac1{100}A(t)=6+3\sin\dfrac t4$

We're given that $A(0)=30$ . Multiply both sides by the integrating factor $e^{t/100}$ , then

$e^{t/100}A'(t)+\dfrac1{100}e^{t/100}A(t)=6e^{t/100}+3e^{t/100}\sin\dfrac t4$
$\left(e^{t/100}A(t)\right)'=6e^{t/100}+3e^{t/100}\sin\dfrac t4$
$e^{t/100}A(t)=600e^{t/100}-\dfrac{150}{313}e^{t/100}\left(25\cos\dfrac t4-\sin\dfrac t4\right)+C$
$A(t)=600-\dfrac{150}{313}\left(25\cos\dfrac t4-\sin\dfrac t4\right)+Ce^{-t/100}$

Given that $A(0)=30$ , we have

$30=600-\dfrac{150}{313}\cdot25+C\implies C=-\dfrac{174660}{313}\approx-558.02$

so the amount of salt in the tank at time $t$ is

$A(t)\approx600-\dfrac{150}{313}\left(25\cos\dfrac t4-\sin\dfrac t4\right)-558.02e^{-t/100}$

3 0

3 years ago

2p x 3q x 5r maths watch

Zepler [3.9K]

Answer:

2px^ 8 qr

Step-by-step explanation:

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "x5" was replaced by "x^5". 1 more similar replacement(s).

STEP 1 :

Equation at the end of step 1

((2px3 • q) • x5) • r

STEP 2 :

Final result :

2px8qr

HOPE THIS HELPS!

PLEASE MARK BRAINLIEST IF THIS HELPED YOU LEARN! :)

3 0

3 years ago

Read 2 more answers

Segments AB, EF, and CD intersect at point C, and angle ACD is a right angle. Find the measure of angle BCF.

Alika [10]

We’re is the picture of this

6 0

3 years ago