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2 years ago

Helppppp with alll the problems asap!! Show your work

Mathematics

1 answer:

Nikitich [7]2 years ago

6 0

17) $x+2x+1+3x=\boxed{6x+1}$

18) $17-a+5a-1+4ab=\boxed{4ab+4a+16}$

19) $2(3y-5+y+2)=\boxed{8y-6}$

20) $k^2 +k+k^2 -9k+23+k^2 +k+2k^2 -17=\boxed{5k^2 -7k+6}$

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Hi can anyone help me with all three questions I have not been taught this topic

scoundrel [369]

Answer:

240, 1800, 2040

Step-by-step explanation:

First find the surface area of the shape - base = 3 x 15 x 2 + 40 x 15 + 40 x 3 x 2 = 930 m ^2

Now find the area of base = 40 x 15 = 600

Now, the cost of painting = 10 pounds for 25 m^2. SO here cost = 600 / 25 x 10 = 24 x 10 = 240 pounds.

Now cost of tiles = 600 x 3 = 1800

Total cost = 1800 +240 = 2040

4 0

4 years ago

Which expression is equivalent to 60 - 3y - 9?

disa [49]

Answer:

the answer has to be 3(17-y)

Step-by-step explanation:

I'm pretty sure about that cause what I did at first is subtract the numbers.

60-3y-9

=51-3y

factor our 3 from the expression.

3(17-y)

7 0

3 years ago

Read 2 more answers

Fill in the missing term in the equation

Y_Kistochka [10]

Answer:

x

Step-by-step explanation:

Let's simplify the LHS so it can be equated to the RHS.

$\frac{x}{x^{2} -4x+4} - \frac{x}{x^{2} -3x+2}$

$\frac{x}{(x-2)^{2} } - \frac{x}{(x-1)(x-2)}$

$\frac{x(x-1)-x(x-2)}{(x-2)^{2}(x-1)}$

$\frac{x^{2} -x-x^{2}+2x }{(x-2)^{2}(x-1)}$

$\frac{x}{(x-2)^{2}(x-1)}$

Hence, the missing term in the numerator of the answer is x

6 0

2 years ago

If two lines have different slopes, they cannot have an infinite number of solutions.

Anuta_ua [19.1K]

Never due to if they have different slopes they can only have 1 solution.

3 0

3 years ago

Will give brainliest! Pls help!

olga2289 [7]

A straight line equals 180 degrees, so the 3 angles in the picture need to equal 180.

X + 90 + 25 = 180

x +115 = 180

Subtract 115 from both sides:

x = 65

6 0

3 years ago

Read 2 more answers