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Vilka [71]
3 years ago
14

Determine if the lines are parallel, perpendicular or neither. -2x + y = -4 and -19 - y = 1/2x

Mathematics
1 answer:
LekaFEV [45]3 years ago
8 0
The lines are perpendicular because the slopes are negative reciprocals of eachother.
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Plsss helppp!!!!!!!!!!!!!!
azamat

Answer:

yes

Step-by-step explanation:

A statistical question is one that can be answered by collecting data and where there will be variability in that data.

because not every father would be born on the same day this is a statistical question.

8 0
3 years ago
Triangle ABC is transformed to obtain triangle A′B′C′:
GaryK [48]

Answer:

327

Step-by-step explanation:

7 0
3 years ago
What are the solutions to the nonlinear equations below y=4x x^2 + y^2=17
wolverine [178]

Answer:

x = 1 and x = -1

Step-by-step explanation:

Next time, please separate the equations with a comma or semicolon.  Thanks.

We can substitute 4x for y in the quadratic equation x^2 + y^2=17:

x² + (4x)²=17.

Then x² + 16x² = 17, or

17x² = 17, or x² = 1.  There are two solutions:  x = 1 and x = -1.

8 0
3 years ago
Find z of the diagonal triangle. <br> Also, complete b.
STatiana [176]

Answer:

x = 30.91 cm , y = 29,86 cm and z = 39.30 cm.

Total area of wood = 2942.54 cm^2.

Step-by-step explanation:

sin 15 =8/x

x = 8 / sin 15

x = 30.91 cm.

and

tan 15 = 8/y

y = 8 / tan 15

= 29.86 cm.

The value of z can be found using the Pythagoras theorem:

50^2 = x^2 + z^2

z^2 =  20^2 - x^2 = 50^2 - 30.91^2

z^2 = 1554.57

z = √1554.57

=  39.30 cm.

b.  The area consists of 3 rectangles :- 1. sides x and z  2. sides z and 8 and the other has sides z and y. Also 2 triangles of height 8 and base length y cm.

Total area = 30.91  * 39.30 + 8 * 39.30 + 29.86 * 39.30 + 2 * 0.5 * 8 * 29.86

=  2942.54 cm^2.

3 0
3 years ago
Is the fraction 315/8 irrational
Debora [2.8K]

Answer:

315/8 GIVES 39.375.

But 35.375 Is actually a rational number,because it is terminating after 3 decimal places.

Hence its not a rational number

3 0
3 years ago
Read 2 more answers
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