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Anna35 [415]
3 years ago
12

Using substitution how do u solve 3y+2x=6 and 5y-2x=10

Mathematics
2 answers:
Sergeu [11.5K]3 years ago
7 0
<span>3y+2x=6
5y-2x=10
--------------add
8y = 16
y = 2

</span>3y+2x=6
3(2)+2x=6
6 + 2x = 6
2x = 0
x = 0

answer: x = 0 and y = 2 or (0,2)
Viefleur [7K]3 years ago
5 0
The answer is x=-9 and y=8
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Landen spent L hours at the beach last weekend. Matéo spent 15% fewer hours at the beach than Landen did.
andre [41]

Answer:

L(1-0.15)

L-(15/100)L

Step-by-step explanation:

we  know that

100%-15%=85%

85%=85/100=0.85

so

The number of hours that Mateo spent at the beach last week is equal to the hours that landen spent at the beach (L) multiplied by 0.85

The linear equation that represent this situation is

0.85L  

<u><em>Equivalent expressions are</em></u>

1) L(1-0.15)

Because

Applying distributive property

L(1-0.15)=L-0.15L

Combine like terms

L-0.15L=0.85L

2) L-(15/100)L

because

15/100=0.15

substitute

L-(15/100)L=L-(0.15)L=0.85L

8 0
3 years ago
2(x+5)=3x+1 <br> How do I solve this
elena55 [62]

Answer:

x = 9

Step-by-step explanation:

2(x+5)=3x+1

Distributive Property

2x+10=3x+1

Subtract 2x from both sides

10=x+1

Subtract 1 from both sides

9=x

Correct form: x=9

7 0
3 years ago
Are the two triangles below similar? Triangles GHI and JKL are shown. Angle G equals 46 degrees, Angle I equals 27 degrees, Angl
Scilla [17]

Answer:  No; they do not have proportional corresponding sides

Step-by-step explanation:

Since, here in triangles GHI and JKL,

∠ G = 46°, ∠I = 27° ⇒ ∠H = 107° , ∠L = 27°, ∠ K = 108°⇒∠J = 45°

GH = 4, HI = 5 , KJ= 2 and JL = 4

Here ∠I ≅ ∠L

But,  \frac{GH}{JK} \neq \frac{HI}{JL}

Therefore, they do not have proportional corresponding sides.

That is why they are not similar to each other.



8 0
3 years ago
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alukav5142 [94]

Answer: 0.6 liters per kilometer

Step-by-step explanation:

(A) 475L - 50km

(B) 375L - 200km

Subtract liters.

475-375=100L

Subtract km

200-50=150km

Divide liters per km

100/150=0.6L/km

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Step-b-step explanation:

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