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3 years ago

3х + y = 13 4x - 3y = 13 SOLVE using Elimination please show work !!

Mathematics

2 answers:

ipn [44]3 years ago

8 0

Answer:

value of x= 4 and value of y =1.

LekaFEV [45]3 years ago

6 0

Answer:

x = 4

y - 1

Step-by-step explanation:

(3 x 4) + 1 = 13

(4 x 4) - (3 x 1) = 13

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Maksim231197 [3]

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mafiozo [28]

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2 years ago

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Solve for x: X= 76⁰ 9x+1 40°

luda_lava [24]

7 is the value of x, and 64° is the measure of the unknown angle.

Triangle angles of 76°, (9x+1)°, and 40° are provided.

According to the triangle's "angle sum property," a triangle's angles add up to 180 degrees. Three sides and three angles, one at each vertex, make up a triangle. The sum of the interior angles in a triangle is always 180o, regardless of whether it is acute, obtuse, or right.

One of the most commonly applied properties in geometry is the triangle's angle sum property. Most often, the unknown angles are calculated using this attribute.

Now, the total of a triangle's three angles equals

76°+(9x+1)°+40°= 180°

⇒ 116+9x+1 = 180

⇒ 9x + 117 = 180

⇒ 9x = 63

⇒ x = 7

So, 9x+1=64°

As a result, x is equal to 7 and the unmeasured angle is 64°.

To learn more about the angle sum property of a triangle, refer to this link:

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4 0

11 months ago

Simplify the expression: 2(2 + 7b) =

nikitadnepr [17]

Answer:

4 + 14b

Step-by-step explanation:

First, you need to distribute so,

2*2= 4 and

2*7b= 14b

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3 years ago

grigory [225]

For this case, what we must do is find the scale factor.
We have then that the scale factor is given by:
$k = \frac{L1}{L2}$
Where,
L1: side length of polygon ABCD
L2: side length of polygon PQRS
Note: both sides belong to the same side of each polygon
Substituting the values we have:
$k = \frac{6}{12}$
Rewriting we have:
$k = \frac{1}{2}$
Answer:
The scale factor of dilation is given by:
$k = \frac{1}{2}$

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3 years ago

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