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3 years ago

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

Mathematics

1 answer:

scoundrel [369]3 years ago

4 0

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

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For what value or values of b is it true that |b| = -b

snow_tiger [21]

Answer:

b =0

Step-by-step explanation:

The only value where |b| = -b is when b=0

|0| = -0

0 = 0

Absolute value means non- negative

non-negative = negative

This is only true when we equal zero

3 0

3 years ago

Read 2 more answers

Write an equation that represents"Four less than the difference of half a number and 3 is 20 ."Use X for the variable.

Alex73 [517]

Answer:

{(1/2)x-3}-4=20

That is your answer.

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3 years ago

Help find the distance between two points?

miv72 [106K]

Answer:

Step-by-step explanation:

Calculate the distance using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = B(0, 0) and (x₂, y₂ ) = ( $\frac{\sqrt{6} }{2}$ , $\frac{\sqrt{58} }{2}$ )

AB = $\sqrt{((\frac{\sqrt{6} }{2})^2 }$ + $\{(\frac{\sqrt{58} }{2})^2 }$

= $\sqrt{\frac{6}{4} }$ + $\frac{58}{4}$

= $\sqrt{\frac{64}{4} }$

= $\sqrt{16}$

= 4

7 0

3 years ago

Help me answer this question please

valentina_108 [34]

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2 years ago

Is y=2 2 -5x linear or non linear

Ganezh [65]

Answer:

linear y=22-5x...is linear

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3 years ago