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SVETLANKA909090 [29]
3 years ago
10

Solve for x of the triangle x^2=3x7

Mathematics
1 answer:
Tju [1.3M]3 years ago
4 0

4.58

Sq rt of 21 3x7= 21

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20 points.<br> Please answer and explain if possible.<br> Multiply.<br> -2y^2 * xy^4
Readme [11.4K]

When the bases are the same, you can combine the exponents.

x³   [x is where the base is]

For example:

x³ · y² = x³y²   You can't simplify this anymore because they have different bases/variables

[when you multiply a variable with an exponent by a variable with an exponent, you add the exponents together] so:

x² · x³ = x^{2+3}=x^5

[when you multiply a variable with an exponent by an exponent, you multiply the exponents together] so:

(x³)²=x^{3*2}=x^6

-2y^2*xy^4=-2x(y^{2+4})=-2xy^6

4 0
3 years ago
Read 2 more answers
What are the explicit equation and domain for a geometric sequence with a first term of 4 and a second term of −12?
Lerok [7]
a_1=4;\ a_2=-12\\\\r=\dfrac{a_2}{a_1}\to r=\dfrac{-12}{4}=-3

The formula of a geometric sequence:

a_n=a_1\cdot r^{n-1}

substitute

a_n=4\cdot(-3)^{n-1}

The\ domain:\ \text{all integers where}\ n\geq1

Answer: \boxed{a_n=4(-3)^{n-1};\ \text{all integers where}\ n\geq1}
4 0
3 years ago
1+sinx+cosx/1+sinx-cosx=1+cosx/sinx help pls by proving
Monica [59]

Answer:

Below.

Step-by-step explanation:

I'll  write sin x as s and cos x as c so we have:

(1 + s +c)/(1 + s - c) = (1 + c)/s

Cross multiplying:

s + s^2 + cs  = 1 + s - c + c + cs - c^2

s  + s^2 + cs = 1 + s + cs - c^2

s^2 + c^2 + s - s + cs - cs = 1

s^2 + c^2 = 1.

- that is sin^2 x + cos^2 x = 1 which is a known identity.

Therefore the original identity is proved.

6 0
3 years ago
Linda saw an alligator in the zoo. Dylon told her he had seen an
lubasha [3.4K]

Answer:

9

Step-by-step explanation:

12-3=9

if dylon saw a 12 foot alligator that was 3 feet longer than the one linda saw to find out how long the alligator linda saw is, subtract the difference from the longer one12-3=9

8 0
3 years ago
In triangle ABC, AC =24, the measure of angle A = 30 degree , and the measure of angle B = 45 degree . Find the area of this tri
andriy [413]

Answer:

142.932

Step-by-step explanation:

given that in triangle ABC, AC =24

Angle A = 30 and Angle B =45

If we draw altitude from C, we get

h = 24sin 30 = 12

Since BC = h (45, 45,90 triangle)

BC=12

By sine formula for triangle

\frac{12}{sin30} =\frac{AB}{sin(180-45-30)} \\AB = 24 sin 105 = 23.1822

Area of triangle

= 1/2 (23.1822)(12)\\= 142.932

6 0
3 years ago
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