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3 years ago

The figures in the oval on the left are parallelograms. The figures in the oval on

Mathematics

1 answer:

kozerog [31]3 years ago

7 0

Answer:

The answer is C

Step-by-step explanation:

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Please help it's urgent

ira [324]

Answer:

no solutions exist

Step-by-step explanation:

You can rewrite the denominator as:

-2(2x-6) so the equation becomes:

$-\frac12 \cdot \frac{2x-6}{2x-6} > 0$

from which you can see that not only should x ≠ 3, but for all values of x≠3 the equation is false.

3 0

3 years ago

What is the sum of the measures of the interior angles of a 20-sided figure?

Reika [66]

18, I believe 360/20 equals 18.

6 0

3 years ago

Find the value of x so that the polygons have the same perimeter.

Novosadov [1.4K]

Answer: x=4

Step-by-step explanation:

The perimeter´s formula for this kind of polygons is

The triangle perimeter would be:

(x+2)+(x+3)+(x+3)

And the rectangle:

(x+2)+(x+2)+x+x

For them to have the same value, we should equal them:

(x+2)+(x+3)+(x+3)=(x+2)+(x+2)+x+x

Working with this:

3x+8=4x+4

x=4

4 0

3 years ago

Select the two values of x that are roots of this equation.

charle [14.2K]

Answer:

$x1 = \frac{ - 3 - \sqrt{33} }{2} \\ x2 = \frac{ - 3 + \sqrt{33} }{2}$

Step-by-step explanation:

$x = \frac{ - b + - \sqrt{ {b}^{2} - 4ac} }{2a} \\ = \frac{ - 3 + - \sqrt{9 + 24} }{2} \\ x1 = \frac{ - 3 - \sqrt{33} }{2} \\ x2 = \frac{ - 3 + \sqrt{33} }{2}$

7 0

3 years ago

In a biathlon , jackson cycled 9 miles in 3/4 of an hour in the first event. He than ran, on average, 7 miles per hour slower in

lozanna [386]

Answer:

7.5 miles

Step-by-step explanation:

Given

In cycling,He covered 9 miles in $\frac{3}{4}$ hours,Therefore his avg cycling speed, u $=\frac{Distance}{Time} =\frac{9}{\frac{3}{4} } =12\frac{miles}{hour}$
In second event, It took him $1\frac{1}{2} =\frac{3}{2}$ hours to complete,And his avg speed,v is 7 $\frac{miles}{hour}$ slower than in previous event

⇒v= u-7

v= 12-7

v=5

Distance covered in 1st event $=9miles$

Distance covered in 2nd event $=Speed\times Time= 5\times \frac{3}{2} =7.5miles$

4 0

3 years ago