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Ivahew [28]
3 years ago
8

How to solve 3x+y=6 and y=-3 using substation method

Mathematics
1 answer:
mafiozo [28]3 years ago
7 0

Answer:

x=3

Step-by-step explanation:

since they give you y this is a very simple problem

simply replace y with -3 and get

3x+(-3)=6

adding a negative number is the same as subtracting a positive number

3x-3=6

add 3 on both sides

3x=9

divide by 3 on both sides

x=3

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2 crusts, 1 sauce, and 2 toppings.

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The area of the rectangle is 49 square units.
Ilia_Sergeevich [38]

Answer:

\boxed{70 \ \text{units}^{2}}

Step-by-step explanation:

<em>I assume that the </em><u><em>polygon</em></u><em> is made up of a </em><em>rectangle</em><em> and </em><em>two triangles. </em><em>Thus, the </em><em>area</em><em> of the </em><u><em>polygon</em></u><em> is the area of the </em><u><em>triangles</em></u><em> and the </em><u><em>rectangle.</em></u>

<em>≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡</em>

\text{Area of polygon} = \text{Area of rectangle} + \text{Area of triangle}_{1} }  + \text{Area of triangle}_{2}

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➡ {\bold{Area \ of\  polygon = 49 + 21 = \underline{70 \ units}^{2}}

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3 0
2 years ago
Four times the larger of two numbers is equal to seven times the smaller. The sum of the number is 22. Fine the number
GenaCL600 [577]
4y=7x
The sum of the numbers is 22
so, x+y=22
x=(22-y)
by substitute (22-y) for x in the first equation. 
6 0
3 years ago
Helpp meeee i don't understand constant of proportionality (don't put pictures i can't see).
Vikentia [17]

Answer:

A) 1/5

Step-by-step explanation:

Points on the graph: (10, 2) and (20, 4)

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m=(4-2)/(20-10)

m= 2/10

m = 1/5

8 0
3 years ago
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