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3 years ago

Answer to the question

Mathematics

1 answer:

Ivanshal [37]3 years ago

6 0

Answer:

Step-by-step explanation:

In a parallelogram,

i) opposite sides are equal and parallel.

So, DC = AB

DC = 28 units

ii) Diagonals bisect each other.

AC bisects BD

DE = EB = $\frac{1}{2}$ BD

DE = $\frac{1}{2}*91$ = 45.5

DE = 45.5 units

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Find the value of x in the following system of equations: 2x−3y=9x=4+y

Klio2033 [76]

Answer:

x = 4 - 1 = 3

Step-by-step explanation:

2(4 - y) + 3y = 9

8 - 2y + 3y =9

8 + y = 9

y = 1

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3 years ago

Find the product of the given polynomials. <br> (5x + 8 – 6r) (4 + 2r – 7)<br><br><br>

Inessa05 [86]

Answer:

-12r² + 10xr - 15x + 34r - 24

Step-by-step explanation:

1. Organize it, variables first - as well as adding constants such as 4 and -7

(5x - 6r + 8) (2r - 3)

2. Start by multiplying the 5x by (2r - 3), then -6r, followed by 8

(10xr - 15x) + (-12r^2 + 18r) + (16r - 24)

3. Simplify

10xr - 15x - 12r² + 18r + 16r - 24

4. Order by greatest to smallest factorial

-12r² + 10xr - 15x + 18r + 16r - 24

5. Combine like variables

-12r² + 10xr - 15x + 34r - 24

6 0

3 years ago

Chicago, Illinois has an elevation of 600 feet. Seely, California is -200 feet. What does 0 represent in the context of this sit

tatyana61 [14]

Answer:

Sea level

Step-by-step explanation:

In geography, 'Elevation' is measured in relation to sea level, so sea level would be zero.

Thus, Chicago is 600 feet above sea level and Seely, California is 200 feet below sea level.

If there were nothing but flat land all the way from Seely to the ocean, sea water would come in and cover Seely. Fortunately for the people in Seely. California's coastal mountain range is between the town and the ocean, so that does not happen.

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3 years ago

Read 2 more answers

pantera1 [17]

(2h – 3)(3h + 4) is the same thing as

2h(3h + 4) - 3(3h + 4)

6h^2 + 8h - 9h - 12

6h^2 - h - 12

Answer B.

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3 years ago

Read 2 more answers

Eliminate the parameter. x = t^2 + 1, y = t^2 - 1.

Maksim231197 [3]

Answer:

Eliminating the parameter, the equation is $y = x - 2$

Step-by-step explanation:

We are given the following parametric equations:

$x = t^2 + 1$

$y = t^2 - 1$

We want to eliminate the parameter t. From the first equation:

$x = t^2 + 1$

$t^2 = x - 1$

Replacing in the second equation:

$y = x - 1 - 1$

$y = x - 2$

Eliminating the parameter, the equation is $y = x - 2$

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3 years ago