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Sladkaya [172]
3 years ago
10

What is the solution 7tan^3x-21tanx=0

Mathematics
1 answer:
PtichkaEL [24]3 years ago
4 0
The final solution is all the values that make <span><span><span><span>7<span>tan<span>(x)</span></span></span><span>(<span><span>tan2</span><span>(x)</span><span>−3</span></span>)</span></span>=0</span><span><span><span>7<span>tanx</span></span><span><span>tan2</span>x<span>-3</span></span></span>=0</span></span> true
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What is 0.00837 written in scientific notation?
Angelina_Jolie [31]

Answer:

8.37 x 10^-3

(Scientific Notation)

 

8.37 x 10^-3

(use the caret symbol [^] to type or write)

8.37E-3

(Scientific E-notation)

0.00837

(Real Number)

Step-by-step explanation:

How to convert numbers or decimals to scientific notation?

In scientific notation all numbers are written in the form of m×10n (m times ten raised to the power of n), where the exponent n is an integer, and the coefficient m is any real number, called the significand or mantissa. If the number is negative then a minus sign precedes m (as in ordinary decimal notation).

7 0
3 years ago
A horse corral is situated on a triangular plot of land. Two sides of the plot are 150 feet long and they meet at an angle of 55
Brrunno [24]

Answer : d. 438.5 ft

The diagram for the given statement is attached below.

Two sides AB and AC are equal so the angle B = angle C

WE know sum of three sides of a triangle = 180

angle A + angle B + angle C = 180

55 + B + C = 180

B + C = 180 -55 = 125

B and C are equal so we divide 125 by 2

angle B = 62.5 and angle C = 62.5

Now we apply sin law

\frac{sin A}{a} = \frac{sin B}{b}

\frac{sin 55}{a} = \frac{sin 62.5}{150}

150 * sin(55) = sin(62.5) * a

122.8728066 = sin(62.5) * a

a = \frac{ 122.8728066}{sin(62.5)}

a= 138.52 feet

To find perimeter we add all the sides

150 + 150 + 138.52 = 438.52 feet



5 0
3 years ago
What is another name for &lt;7. choose all that apply
Natalija [7]

Answer:

The answer is Angle O

Step-by-step explanation:

The reason for this is because O is marked at the corner

3 0
3 years ago
Read 2 more answers
The table shows the cost of different numbers of yards of the material that Marnie wants to buy. Marine needs 3 yards of the mat
valentinak56 [21]
It would cost $14.04. The equation for this would be y = 4.68x. If you multiply 3 by 4.68, you would get 14.04.
7 0
3 years ago
Read 2 more answers
Which is the graph of the linear equality 2x-3y&lt;12
Aloiza [94]
2x - 3y < 12
-3y < -2x + 12...change the inequality sign because ur dividing by a negative number
y > 2/3x - 4

u have a slope of 2/3.....u have a y intercept of -4 or (0,-4)

to find the x int, sub in 0 for y and solve for x....disregard the inequality sign ....
y = 2/3x - 4
0 = 2/3x - 4
-2/3x = -4
x = -4 / (-2/3)
x = -4 * -3/2
x = 12/6
x = 2......and ur x int is 2 or (2,0)

so go ahead and plot ur intercepts (0,-4) and (2,0)....so start at (0,-4)...and since u have a slope of 2/3......go up 2 spaces and to the right 3 spaces...plot that point....then up 2 and to the right 3...plot that point...keep doing this and u will cross the x axis at (2,0)......now just draw a dashed line connecting ur plotted points

ur line will be a dashed line (because there is no equal sign in the problem)....ur shading will be above the line because it is greater then
8 0
3 years ago
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