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nexus9112 [7]
3 years ago
14

Write and describe the four steps for using the linear combination method to solve a system of equations, use complete sentences

. 1. Arrange. 2. multiply if needed. 3. Add or subtract and solve. 4. Find the other variable. ALWAYS CHECK Solve this system using the linear combination method. Show your work and explain each step. 2x + y = 8 x − y = 4
Mathematics
1 answer:
vodomira [7]3 years ago
7 0

Answer:

Step-by-step explanation:

2x+y=8x-y=4

First solve take all x variable to one side and all the y on one

y+y=8x-2x=4

2y=6x=4

Solve for x solve for y

6x=4 2y=4

x=4÷6 y=2

x=4/6

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What if f(0)?<br> 12 only<br> 2 and 3 only<br> -2,-1,1 and 2 only<br> -2,-1,1,2 and 12
Sunny_sXe [5.5K]

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7 0
3 years ago
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Find the Area of the figure below, composed of a rectangle and a semicircle. Round to the nearest tenths place.
luda_lava [24]

Answer:

286.97

Step-by-step explanation:

find the area of the rectangle first

14*15=210

Next

Find the area of a circle

πr^2=a

the radius of the circle is half the height of the rectangle

π*(7*7)=a

a=153.94

Now

Divide the area by two

153.94/2=76.97

Now add the two areas

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7 0
3 years ago
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What is 4/2 in metres.​
Harlamova29_29 [7]
The answer is 0.5 metres.
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5 0
2 years ago
A furniture designer builds a trapezoidal desk with a semicircular cutout. What is the area of the desk?
nirvana33 [79]

Answer:

Area = 26478cm^2

Step-by-step explanation:

Given

See attachment for desk

Required

The area

First, calculate the area of the semicircular cutout

Area = \frac{\pi r^2}{2}

Where

r = 60cm

So:

A_1 = \frac{3.14 * 60^2}{2}

A_1 = \frac{11304}{2}

A_1 = 5652cm^2

Next, the area of the complete trapezium

Area= \frac{1}{2}(a + b) * h

Where

a = 300

b = 2 * r = 2 * 60 = 120

h = 153

So:

A_2 = \frac{1}{2} * (300 + 120) * 153

A_2 = \frac{1}{2} * 420 * 153

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The area of the desk is:

Area = A_2 - A_1

Area = 32130cm^2 - 5652cm^2

Area = 26478cm^2

8 0
3 years ago
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