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Sergio [31]
3 years ago
6

Is (-1,-2) a solution to the equation 2x-3y=4? No O Yes

Mathematics
1 answer:
a_sh-v [17]3 years ago
6 0

Answer:

Yes

Step-by-step explanation:

Plug in (-1 , -2) in the LHS of the equation.

2x - 3y = 2*(-1) - 3*(-2)

           = -2 + 6

           = 4 = RHS

So, (-1 , -2) is a solution

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It takes 45 minutes for 4 people to paint 5 walls how long does it take 6 people to paint 4 walls
Naily [24]

Answer:

54 Minutes

Step-by-step explanation:

45 minutes/5 walls/4 people=2.25 minutes per person per wall

2.25 times 6 times 4=54 minutes

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3 years ago
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4a (8a- 4a + 1)<br> Helpehelpeekendnhdhdjdjdjjdfjjfjfjf
Triss [41]
Complete the math in the brackets (4a + 1)

Multiple each term in the brackets by 4a

4a (8a - 4a + 1)
4a (4a + 1)
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6 0
3 years ago
5.2x+8+2.1x-3 which is an equivalent expression by combining like terms A. 5.2x+8+2.1x-3 B. 5.2x+5+2.1x C 13.2x-0.9x D 7.3x+5
satela [25.4K]

Answer: 7.3x + 5

Step-by-step explanation:

For us to solve the question, we have to solve 5.2x+8+2.1x-3 and the answer gotten will allow us know the equivalent expression.

= 5.2x+8+2.1x-3

= 5.2x + 2.1x + 8 - 3

= 7.3x + 5

Therefore, the correct answer is 7.3x + 5

7 0
3 years ago
Find the inverse of f(x)=-1/3x-5
andreyandreev [35.5K]
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6 0
3 years ago
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The volume of a cube is 7.14 cubic meters. What is the cross-sectional area that is parallel to one of its faces?
Snowcat [4.5K]

Answer:

A = 3.706 square meters

Step-by-step explanation:

the length of a cube has equal side.

therefore, the volume of a cube is given by S³

V = S³ = 7.14

where S is the length of a side

the surface area of a cube is = 6S²

where the area a aside is calculated, then it is multiply by 6.

if S³ = 7.14

S = ∛(7.14) = 1.925 m

What is the cross-sectional area that is parallel to one of its faces?

this is saying we should calculate for the cross-sectional area of one face. All faces in a cube is equal and parallel to each other.

the crossectional  area of one side of a cube is = S² = 1.925² = 3.706 square meters

A = 3.706 square meters

8 0
3 years ago
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