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OverLord2011 [107]

3 years ago

13

Solve In (2x+3)=7 round to the nearest thousandth

1 answer:

e-lub [12.9K]3 years ago

8 0

To solve this problem you must apply the proccedure shown below:

1. You have:
<span>
In(2x+3)=7

2. Then, you must apply log(e), as below:
</span><span>
In(2x+3)=ln(e^7)

3. Now, you obtain:

2x+3=e^7

4. Youy must clear the variable "x", as below:

2x=e^7-3
</span> x=(e^7-3)/2
<span>
5. Therefore, the value of "x" is:

x=546.817
</span><span>
The answer is: </span>x=546.817<span> </span>

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What is the standard form of the number shown in the calculator display?

LenaWriter [7]

3.82 x 10⁷ = 38,200,000 (move the decimal 7 places to the right)

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3 years ago

Find an equation in rectangular coordinates for the cylindrical equation r = 2sintheta

frutty [35]

Answer:

$x^2+(y-1)^2=1$

Step-by-step explanation:

The given cylindrical equation is

$r=2\sin \theta$

Multiply both sides by r.

$r^2=2r\sin \theta$ .... (1)

The required formulas are

$x=r\cos \theta,y=r\sin \theta,r^2=x^2+y^2$

Substitute $r\sin \theta =y,r^2=x^2+y^2$ in equation (1).

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$x^2+y^2-2y=0$

Add 1 on both sides.

$x^2+(y^2-2y+1)=1$

$(x-0)^2+(y-1)^2=1^2$ $[\because (a-b)^2=a^2-2ab+b^2]$

It is the equation of a circle centered at (0,1) with radius 1.

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3 0

3 years ago

A school assembly had 70 students in attendance, and 90% of them were first-graders. How many first-graders were at the assembly

natulia [17]

Answer:

63

Step-by-step explanation:

Because, 100% of 70 would be 7. Now we have that number lets multiply it by 9 because of 90%. 9 x 7 = 63 first-graders

4 0

2 years ago

I Really Need Help With This One Can Some One Plz Help Me?

Lapatulllka [165]

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3 years ago

Pleas help me solve #1 :( <br> Your answer helps so much!!

miskamm [114]

ANSWER

$y = 7 \sqrt{2}$

$x = 7$

EXPLANATION

The given triangle has a right angle.

The side opposite to the 45° angle is 7 units.

To find angle x, we use the tangent ratio.

Recall the mnemonics TOA, which means,

$\tan(45 \degree) = \frac{opposite}{adjacent}$

$\tan(45 \degree) = \frac{7}{x}$

$1 = \frac{7}{x}$

$x = 7$

To find y, we use the sine ratio, which means

$\sin(45 \degree) = \frac{opposite}{hypotenuse}$

$\sin(45 \degree) = \frac{7}{y}$

$y= \frac{7}{\sin(45 \degree) }$

$y= \frac{7}{ \frac{1}{ \sqrt{2} } }$

$y = 7 \times \frac{ \sqrt{2} }{1}$

$y = 7 \sqrt{2}$

3 0

3 years ago

Read 2 more answers