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4 years ago

2x + 3y = 15 and x - 3y = 3 What's the ordered pair

Mathematics

1 answer:

Ganezh [65]4 years ago

4 0

Answer:

x = 6

y = 1

Step-by-step explanation:

to solve this system of equation we say let

2x + 3y = 15 .......................... equation 1

x - 3y = 3.................................. equation 2

from equation 2

x - 3y = 3.................................. equation 2

x = 3 + 3y.................................... equation3

substitute for x in equation 1

2x + 3y = 15 .......................... equation 1

2(3+3y) + 3y = 15

6 + 6y + 3y = 15

9y = 15 -6 ................................... combining the like terms

9y = 9

divide both sides by the coefficient of y

9y/9 = 9/9

y =1

put y = 1 in equation 3

x = 3 + 3y.................................... equation3

x = 3 + 3(1)

x = 3 +3

x = 6

therefore the value of x is 6 and y is 1 respectively

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CaHeK987 [17]

Answer:

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Step-by-step explanation:

13/12 - 7/10 = 23/60

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3 years ago

I need help I’m bad at math

Alina [70]

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The width of each rect. is 1/2.

The heights of the 3 inscribed rect. are {-2.25+6, -1+6, -.25+6} = {3.75,5,5.75}.

The areas of these 3 inscribed rect. are (1/2)*{3.75,5,5.75}, which come out to:

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3 years ago

Given: -1/2x > 6.

lubasha [3.4K]

Answer:

B(2)

Step-by-step explanation:

SO basically think of it as x is a teenager that wants to be alone. so have to figure out how to get everyone on the otehr side of their bedroom door (>)

so you are going to do this

-1/2x>6

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x<-12

Read more on Brainly.com - brainly.com/question/14190937#readmore

8 0

3 years ago

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leonid [27]

Use the double angle identity:

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Then $\cos\dfrac\pi6=\dfrac{\sqrt3}2$ , so you get

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3 years ago

Find the area of each figure

artcher [175]

Answer:

the total area is 155 + 23.75 +23.75 = 202.5

Step-by-step explanation:

rectangle = 15.5 times 10 =155

tryangle 1 = 4.75 times 10 divided by 2=23.75

tryangle 2 = 23.75

8 0

3 years ago

Read 2 more answers