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Mathematics

1 answer:

AnnZ [28]3 years ago

4 0

Answer:

The length is 9 units. The width is 2 units. If you multiply these 2 values (9 x 2) you will get 18 square units for the area of the rectangle.

Step-by-step explanation:

If the area of the triangle is 1/2 the area of the rectangle you will divide 18 by 2.

18/2 = 9.

The area of the triangle is 9 square units.

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Please help, algebra is annoying

padilas [110]

The zeros are the x-intercepts, which are -2 and 4.

The axis of symmetry is x = 1

The vertex of the graph is (1,9)

7 0

3 years ago

I am thinking of a number.

mash [69]

Answer:

$21$

Step-by-step explanation:

Let $x$ be that number.

$12x-216=2x-6$

$12x-2x=-6+216$

$10x=210$

$10x/10=210/10$

$x=21$

21 is the number.

8 0

3 years ago

Read 2 more answers

In parallelogram ABCD , diagonals AC¯¯¯¯¯ and BD¯¯¯¯¯ intersect at point E, AE = 3x - 5, and CE = x + 11.

german

Answer:

Step-by-step explanation:

For the case of a parallelogram, when the diagonals ( in our case AC & BD) are intersected, they are basically bisected ( divided into two equal halves ). Therefore when the diagonals intersect at point E, we can say that the diagonal AC is divided in two equal halves which in our case are AE and CE. since AE and CE are equal , we can say that,

$AE= CE \\or\\3x-5 = x+11 ---- (1)\\now solving (1) for x, \\3x-x=11+5\\2x=16\\x=8-----> (2)\\\\as \\ AC = AE+CE\\AC = 3x-5+x+11\\AC = 4x+6\\\\\\from (2)\\\\\\AC= 4(8)+6\\AC = 32+6\\AC = 38\\\\since AC = BD ( Diagonals are of same Length )\\therefore \\BD =38$