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2 years ago

10

There's 2 houses bob washes 5 large windows and 6 small windows per house write an equation that I find W the # of Windows washe

d

1 answer:

Levart [38]2 years ago

6 0

2(5)+2(6) = W

Solved:

2(5)+2(6)=W

10+12=W

22=W

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Solve the simultaneous equation:<br> 5 x + 2 y = 25 <br> 5 x − y = 10

Liono4ka [1.6K]

Answer:

(x, y) = (3, 5)

Step-by-step explanation:

$5x+2y=25\\5x-y=10$

Solving by elimination here again, there are 2 good options available. Either multiply the whole bottom equation by -1 to cancel the x, or by 2 to cancel the y. I'll do the latter:

$5x+2y=25\\\\2(5x-y=10)\\10x-2y=20$

Add from top to bottom:

$\rightarrow (5x+10x)+(2y-2y)=25+20\\\rightarrow 15x=45\\\rightarrow x=3$

Now, with the value of x, solve for y in either of the equations. I'll choose the second one here:

$\rightarrow 5x-y=10\\\rightarrow 5(3)-y=10\\\rightarrow 15-y=10\\\rightarrow -y=-5\\\rightarrow y=5$

(x, y) = (3, 5)

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2 years ago

Read 2 more answers

Rewrite 3^-4 without negative exponents

KengaRu [80]

Answer:

$\frac{1}{3^{4} }$

Step-by-step explanation:

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2 years ago

Does 4/7 and 24/35 form a proportion?

nignag [31]

Well 24=4*6, and 35=7*5 not 6, so 4/7 doesn't = 24/35, so no

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3 years ago

The perimeter of a triangle is 17x-5 units. One side is 3.x + 5 units and another is 8x-3 units. How many units long is the thir

Ivahew [28]

Answer:

C = 6x - 7 units

Step-by-step explanation:

Let the three sides of the triangle = A, B, and C respectively.

<u>Given the following data;</u>

Perimeter of triangle, P = 17x-5 units

Side A = 3x+5 units

Side B = 8x-3 units

To find side C?

The perimeter of a triangle is given by the addition of all its three (3) sides.

Mathematically, the perimeter of a triangle is given by the formula;

P = A + B + C

Making "C" the subject of formula, we have;

C = P - A - B

Substituting into the equation, we have

C = 17x - 5 - (3x + 5) - (8x - 3)

C = 17x - 5 - 3x - 5 - 8x + 3

Collecting the like terms, we have;

C = 17x - 3x - 8x - 5 - 5 + 3

C = 6x - 7 units

Therefore, the third side is 6x - 7 units long.

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2 years ago

The universal ga law PV=net describes the relationship among the pressure volume and temperature of a gas.

miskamm [114]

Answer:

R ≈ 8.31

Step-by-step explanation:

Filling in the given values ...

... pV = nRT

... 2·4.155 = 1·R·1

... 8.31 = R

7 0

3 years ago