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zzz [600]
2 years ago
11

Evaluate: x(y – 5) for x = 2 and y = 7

Mathematics
1 answer:
KATRIN_1 [288]2 years ago
4 0

Answer:

4

Step-by-step explanation:

2(7-5)=4

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Answer the following questions (a) Given point P(3, −2, 7) in R 3 , find the distance of point P from (i) x−axis Answer: (ii) y−
hoa [83]

Answer:

(i) Distance of point P from x-axis is 3 units.

(ii) Distance of point P from y-axis is 2 units.

(iii) Distance of point P from z-axis is 7 units.

Step-by-step explanation:

Given points is P(3, −2, 7).

Coordinate plane is a plane containing both x-axis and y-axis.

x-axis is the horizontal line and y-axis is the vertical line.

The axes divide the coordinate plane divide into four quadrants.

The axes are perpendicular to each other.

To find:distance of point P from (i) x−axis, (ii) y−axis,  (iii) z−axis

Solution:

(i) Distance of point P from x-axis is 3 units.

(ii) Distance of point P from y-axis is 2 units.

(iii) Distance of point P from z-axis is 7 units.

4 0
3 years ago
2. Find the magnitude and direction of the resultant vector of two forces. The first force is 250 pounds at an angle of 25 degre
Lady bird [3.3K]

Answer:

Magnitude = 220.49pounds

Direction = 16.7°

Step-by-step explanation:

Find attached the diagram obtained from the given information.

From the diagram, 25° is in the first quadrant with all positive values: x = cos25°, y = sin35°

Force for the x and y component: Fx, Fy

250(sin25, cos25) = (250sin25, 250cos25)

= [250(0.4226), 250(0.9063)]

= (105.65, 226.575)

The 250° is in the 2nd quadrant with values: x = cos250°, y = sin250°

Force for the x and y component: (Fx, Fy)

45(sin250, cos250) = (45sin250, 45cos250) = [45(-0.9397), 45(-0.3420]

= (−42.2865, -15.39)

The resultant forces for x and y components = sum of Fx in the 1st and 2nd force and, sum of Fy in the 1st and 2nd force

sum of Fx in the 1st and 2nd force = 105.65 + (−42.2865) = 63.3635

sum of Fy in the 1st and 2nd force = 226.575 + (-15.39) = 211.185

Magnitude = √[(ΣFx)² + (ΣFy)²]

= √[(63.3635)² + (211.185)²]

= √(4014.9331 + 44599.1042)

= √(48614.0373)

= 220.49pounds

Direction = arctan (ΣFx/ΣFy)

= arctan (63.3635/211.185)

= arctan(0.30)

= 16.7°

7 0
3 years ago
Answer number 11 pls
Archy [21]

Answer:

121.52 feet

Step-by-step explanation:

9.8+2.6 = 12.4

12.4 * 9.8 = 121.52

6 0
2 years ago
Which is an equation?
Arada [10]
........The answer is B
7 0
2 years ago
if 1/5 and -2 are respectively product and sum of the zeroes of a quadratic polynomial. Find the polynomial.​
Nikitich [7]

Answer:

this might be the equation

Step-by-step explanation:

To find: Quadratic Polynomial.

where , ( α + β ) is sum of zeroes and αβ is product of zeroes.

4 0
3 years ago
Read 2 more answers
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