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olga nikolaevna [1]
3 years ago
11

The number 15, 56 rounded to the nearest thousand is 15,000

Mathematics
1 answer:
Neporo4naja [7]3 years ago
6 0
Its not the answer would be 20,000
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Find the point of intersection (if any) of the following pairs of lines: a) x – 2y +1=0 2x + 3y – 7 = 0 b) x-2y+11=0 -x+2y-13 =
pychu [463]

Answer:

a) (11/7, 9/7)

b) There's no point of intersection

Step-by-step explanation:

a) x - 2y + 1 = 0

2x + 3y - 7 = 0

To find the point of intersection, we need to solve the system of equations  and the result will be the point of intersection (x,y)

x-2y+1=0\\x= 2y-1

Now we substitute x in the second equation:

2x+3y-7=0\\2(2y-1)+3y-7=0\\4y-2+3y-7=0\\7y-9=0\\y=9/7

Now we substitute y in our first equation.

x-2y+1=0\\x-2(9/7)+1=0\\x-18/7+1=0\\x=18/7-1\\x=11/7.

The point of intersection is (11/7, 9/7)

b) x -2y +11 =0

-x + 2y - 13 =0

We are going to follow the same procedure:

x-2y+11=0\\x=2y-11

-(2y-11)+2y-13=0\\-2y+11+2y-13=0\\0y=2\\0=2

Since this system of equations doesn't have a solution, the system has no point of intersection.

5 0
3 years ago
If nm = 8x - 14 and jk = x squared + 1, find JK
marissa [1.9K]

A parallelogram in which adjacent sides are perpendicular to each other is called a rectangle. The length of Jk can be either 10 or 26.

<h3>What is a rectangle?</h3>

A parallelogram in which adjacent sides are perpendicular to each other is called a rectangle. A rectangle is always a parallelogram and a quadrilateral but the reverse statement may or may not be true.

Since in a rectangle the opposite sides are equal, therefore, the sides NM and JK will be equal.

JK = MN

8x - 14 = x² + 1

0 = x² - 8x + 15

x = 5, 3

Hence, the length of Jk can be either 10 or 26.

The complete questions are:

Quadrilateral JKMN is a rectangle, if NM= 8x - 14 and JK= x squared + 1, find JK.

Learn more about Rectangle:

brainly.com/question/15019502

#SPJ1

8 0
2 years ago
Difference in elevation between mount Everest and Dead sea
Snowcat [4.5K]

The difference is 27, 735 ft


5 0
3 years ago
Read 2 more answers
Aileen worked 35.5 hours last week. She earns $7.75 per hour. How much money did she make last week.
andrezito [222]

Answer:

275.125

Step-by-step explanation:

just multiply 35.5 with 7.75 and theres your answer

8 0
3 years ago
Work out the area of the circle take pi to be 3.142 the radius 11.2cm
lozanna [386]

The formula for the area of a circle is Area = PI x r^2

Area = 3.142 x 11.2^2

Area = 394.13 square cm.

6 0
3 years ago
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