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3 years ago

Solve the simultaneous equation 3x-2y=7 7x+2y=13

Mathematics

1 answer:

Lerok [7]3 years ago

5 0

Answer: x= 2, y= -1/2

Step-by-step explanation:

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Special right triangles, find x and y

egoroff_w [7]

Answer:

The answer to your question is x = 17.32; y = 8.67

Step-by-step explanation:

Process

1.- Use trigonometric functions to find x and y

a) sin Ф = $\frac{opposite side}{hypotenuse}$

Ф = 60°

opposite side = 15

hypotenuse = ?

$hypotenuse = \frac{opposite side}{sin \alpha }$

$hypotenuse = \frac{15}{sin 60}$

$hypotenuse = \frac{15}{0.87}$

hypotenuse = 17.32

b) cosФ = $\frac{y}{hypotenuse}$

$y = hypotenuse x cos 60$

$y = 17.32 x 0.5$

y = 8.67

5 0

3 years ago

Completely factor the expression 16t^3 - 50t^2 + 36t

NikAS [45]

$\bf 16t^3-50t^2+36t\implies 2t[8t^2-25t+18]\implies 2t[(8t-9)(t-2)]$

4 0

3 years ago

Can someone help me with 19 ,20,21,22

valina [46]

Answer:

In Euclidean geometry, a regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length).

Dual polygon: Self-dual

Step-by-step explanation:

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3 years ago

While on vacation, the Jacobson family drove 312.8 miles the first day, 177.2 miles the second day, and 209 miles the third day.

quester [9]

Literally just add it all up.
312.8+177.2+209=699 miles

8 0

3 years ago

Please help me I want a good grade!!

krok68 [10]

Answer:

Step-by-step explanation:

8 0

3 years ago

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