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2 years ago

Can anyone plz solve this for me??

Mathematics

2 answers:

marshall27 [118]2 years ago

8 0

Answer:

s = -3

Step-by-step explanation:

1 = 4s + 13

rewrite

4s + 13 = 1

4s = 1 - 13

4s = -12

s = -3

Lemur [1.5K]2 years ago

6 0

4x+13=1
4x+13-13=1-13
4x=-12
x=-12÷4
x=-3

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-24x -24x

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3 years ago

What is equal to 4.2 kilometers

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Answer:

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Step-by-step explanation:

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2 years ago

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Read 2 more answers

Work out the area of the trapezium ABDE.<br> B<br> 9 cm<br> 6 cm<br> 8 cm<br> →D<br> E

Evgen [1.6K]

Answer:

Area of the trapezium ABDE = 30 cm²

Step-by-step explanation:

Area of a trapezium = $\frac{1}{2}(b_1+b_2)h$

Here, $b_1$ and $b_2$ are the parallel sides of the trapezium

h = Distance between the parallel sides

From the picture attached,

ΔCAE and ΔCBD are the similar triangles.

So by the property of similarity their sides will be proportional.

$\frac{AE}{BD}= \frac{CE}{CD}$

$\frac{9}{6}=\frac{CE}{8}$

CE = $\frac{9\times 8}{6}$

CE = 12 cm

Therefore, DE = CE - CD

DE = 12 - 8 = 4 cm

Now area of trapezium ABDE = $\frac{1}{2}(AE+BD)(DE)$

= $\frac{1}{2}(6+9)4$

= 30 cm²

Therefore, area of the trapezium ABDE = 30 cm²

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2 years ago