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belka [17]
3 years ago
10

Solve this simultaneous equation by method of elimination

Mathematics
1 answer:
lawyer [7]3 years ago
7 0

Answer:

y

=

−

2

x

3

+

1

3

y

=

−

3

x

5

+

1

5

Step-by-step explanation:

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What is the equation?
kipiarov [429]
7) 5x+17
8) 21 -5y <7
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6 0
3 years ago
The following three shapes are based only on squares, semicircles, and quarter circles. Find the perimeter and the area of each
zysi [14]

Answer:

Area: 16π-32

Perimeter: 4π + 8sqrt(2)

Step-by-step explanation:

Area:

The shaded part plus the right triangle BCD makes a quarter circle, so you can find the area of the quarter circle minus the triangle.

For the quarter circle, the radius is 8, so the entire circle area is 64π, making the quarter circle 16π.

The triangle is 8*8/2 = 32.

So, the quarter circle minus the triangle, or the area, is 16π-32.

Perimeter:

Again, this is a quarter circle. So, you can add the lengths of arc BD and the line segment BD.

The radius is 8, so the entire circumference is 16π, making the quarter circle 4π.

The hypotenuse of the right triangle will be sqrt(8*8+8*8), or 8sqrt(2).

Add and get 4π + 8sqrt(2) as your perimeter.

6 0
3 years ago
Find the distance using the modulus of the difference between z = -8 +31 and 22 = 4 + 71.
Darina [25.2K]

Answer: c

Step-by-step explanation:

4 0
3 years ago
How do you know pi x r x r x h
Nat2105 [25]
V= πr^2h

This is the formula for volume of a cylinder. The volume formula builds off the area formula. Where area is more 2-dimensional, volume is 3-dimensional. You can think of a flat sheet of paper for area (2-dimensional) and a solid box for volume (3-dimensional).

Usually your teacher would give the formulas when starting this section of math. From there, either keep a list of needed formulas in your math folder for easy reference, or try to memorize the formulas for the current section of math you are working on. Some teachers allow formula reference sheets and some do not.

Hope this answers your question! :)
4 0
3 years ago
1-2
EleoNora [17]

Answer:

f(-3) = g(-3)

Step-by-step explanation:

Let's look at each option to which one is true with regard to the given functions on the graph.

The option that is correct is the option that shows where the graph of f(x) and g(x) intercepts or cut across each other.

Now, take a look at the graph, the line of both functions intercepts at x = -3. At this point, the value of f(-3) and g(-3) is equal to -4.

Therefore: f(-3) = g(-3)

3 0
3 years ago
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