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3 years ago

ABCD is a parallelogram. AC = 9cm, DC = 11cm, angle DAC = 100'. Calculate the area of the parallelogram

Mathematics

1 answer:

amm18123 years ago

5 0

I was wondering why my previous post was deleted (I attached the same picture below).

I spent a long time drawing and labeling a diagram as well as writing out a detailed formulaic explanation.

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Evaluate sigma 12 n=3-5n-1

Leni [432]

12n = 3-5n-1 or n =3-5n-1???

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3 years ago

What is the surface area of this design?

vichka [17]

Answer:

280in

Step-by-step explanation:

10×6=60

60×2=120

6×10=60

4×4=16

16×2=32

4×6=24

4×4=16

6×6=36

120+60+32+24+16+36=280

4 0

3 years ago

Fiona wrote the linear equation y = 2/5 x – 5. When Henry wrote his equation, they discovered that his equation had all the same

Hoochie [10]

we have

$y=\frac{2}{5}x-5$

Let's Isolate the variable y in each of the cases and then compare with Fiona's equation to determine the solution of the problem

case A) $x-\frac{5}{4}y= \frac{25}{4}$

Multiply by $4$ both sides

$4x-5y= 25$

$5y=4x-25$

Divide by $5$ both sides

$y=\frac{4}{5}x-5$

therefore

the case A) is not equal to Fiona's equation

case B) $x-\frac{5}{2}y= \frac{25}{4}$

Multiply by $4$ both sides

$4x-10y= 25$

$10y=4x-25$

Divide by $10$ both sides

$y=\frac{2}{5}x-2.5$

therefore

the case B) is not equal to Fiona's equation

case C) $x-\frac{5}{4}y= \frac{25}{2}$

Multiply by $4$ both sides

$4x-5y= 50$

$5y=4x-50$

Divide by $5$ both sides

$y=\frac{4}{5}x-10$

therefore

the case C) is not equal to Fiona's equation

case D) $x-\frac{5}{2}y= \frac{25}{2}$

Multiply by $2$ both sides

$2x-5y= 25$

$5y=2x-25$

Divide by $5$ both sides

$y=\frac{2}{5}x-5$

therefore

the case D) is equal to Fiona's equation

the answer is

$x-\frac{5}{2}y= \frac{25}{2}$

7 0

3 years ago

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Need Assistance With This Problem

AnnZ [28]

Answer:

not sure how to really answer this question.

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3 years ago

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Solve the inequality and enter your solution as an inequality in the box below.

PSYCHO15rus [73]

Answer:

x > -10

Step-by-step explanation:

2 + x > -8

x > -8 - 2

x > -10

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2 years ago

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