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1 year ago

GUYS HELPPPP PLEASE I RLY NEED IT RN, I NEED ANSWER #7 IM DESPERATE RN PLSSS

Mathematics

1 answer:

drek231 [11]1 year ago

8 0

Answer:

6 units

Step-by-step explanation:

The questions states that the area = perimeter.

From this we can set up an equation:

$x*y=2x+2y$

Since we know one of the sides is 3 we can substitue one of the variables for 3. In this case I choose $y$

$3*x=2x+2*3\\3x=2x+6$

Solving for x we get $x=6$ .

That's our answer!

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Work out the area of the trapezium ABDE. B 9 cm 6 cm 8 cm →D 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

8 0

2 years ago

Zekia divides 6 cups of fruit juice equally among 8 friends. 2 of her friends don't drink the juice. How much is leftover? Thank

BlackZzzverrR [31]

6 = 8f - 2f
6 = 6f
f = 1

there is no leftover as each friend get 1 cup

5 0

3 years ago

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What is the perimeter of a rhombus whose diagonals measure 42cm and 56cm?

Trava [24]

Answer:

676

Step-by-step explanation:

d1×d2/2

42×56/2

1352/2=676

please check it by doing again

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2 years ago

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Juan invested $100 in a savings account the earns 5% annually. The value, A, of the investment can be calculated using the equat

Karolina [17]

Answer:

$110.25

Step-by-step explanation:

Step one:

given

principal= $100

rate= 5%

time = 2 years

Required

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Step two:

The compound interest formula is

$A=p(1+r)^t$

substituting we have

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The final amount is $110.25

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2 years ago

What is the gcf of 12 18 26

navik [9.2K]

the greatest common factor is 2

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3 years ago

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