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vladimir1956 [14]
3 years ago
11

Solve each system of equations by substitution X + 3y = 6 -x + y = -7

Mathematics
1 answer:
Naily [24]3 years ago
5 0

Answer:

(27/4, -1/4)

Step-by-step explanation:

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7) A patient received 4 units of packed red blood cells postoperatively. The first
Vlad [161]

Answer:

812

Step-by-step explanation:

add the units mL's together

4 0
3 years ago
A coordinate system, or ____________________, is used to locate points in a 2-dimensional plane.
andreev551 [17]

Answer:

A coordinate system,or Coordinate plain ,is used to locate points in a 2-dimensional plane.

explanation:

A coordinate plain is formed by the intersection of two lines.One line is vertical and the other is horizontal.The vertical line is called y- axis and the horizontal line is called x-axis. It is two dimensional plane,which means it has length and breadth but no depth.The point where both the lines intersect is called the point of origin.Any point can be located on the coordinate plain by numbers(x,y). These pair of numbers are called coordinates.

It is used to plot points and lines.This system explains algebraic concepts .it has four equal divisions called quadrants namely I ,II,III,IV.

6 0
3 years ago
A circle's radius is 14 centimeters.
spayn [35]

Answer:

Circumference of circle = 87.92 centimeter

Step-by-step explanation:

In the given question;

Radius of circle = 14 centimeters

Value of π = 3.14

Find:

Circumference of circle

Computation:

⇒ Circumference of circle = 2πr

where r = Radius of circle

⇒ Circumference of circle = 2(3.14)(14)

⇒ Circumference of circle = (6.28)(14)

Circumference of circle = 87.92 centimeter

4 0
3 years ago
What formula do i use when it tells me to find the area with a given circumference? If you know please give an example as well,
liberstina [14]

Answer:

Step-by-step explanation:

A = C^2 / 4 x pi

so if the circumfernce was 10 you would square it to make it 100 and then you would do 4 x pi to get 12.57 ( rounded).

you would then just divide 100 by 12.57 = 7.96 ( rounded)

hope it helped

6 0
3 years ago
Is 0.57 rational or irrational
tatuchka [14]
That is a rational number.
3 0
3 years ago
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