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3 years ago

Please help me with this one and explain to me how you found the answer

Mathematics

1 answer:

Aneli [31]3 years ago

5 0

Answer:

i believe its a square :)

Step-by-step explanation:

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Which is the equation of a line with the slope of -2 that passes through the point (-2,0)

pickupchik [31]

Y = -2x - 4

-2x is the slope and -4 is the y intercept.

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3 years ago

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Which graph is linear<br>

Sphinxa [80]

Answer:

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3 years ago

The length of a rectangle is 4 ya more than twice the width x. The area is 510 yd^2. Find the dimensions of the given shape

Furkat [3]

Answer:

The dimensions of the rectangle are

length = 34 yards

width = 15 yards

Step-by-step explanation:

Given:

The shape is of rectangle,

Width of rectangle = x

Area of rectangle = 510 yd²

According to the given condition

Length of rectangle = 4 + 2x

To Find:

length =?

Width = ?

Solution:

We know that,

$\textrm{Area of rectangle} = Length\times Width$

On substituting the given values we get

$510 = (4 + 2x)\times x\\510 = 4x+2x^{2}\ \textrm{using distributive property}\\\textrm{dividing throughout by two}\\255=2x+x^{2} \\\\x^{2} +2x -255 = 0\\$

Which is a quadratic equation so we will apply splitting the middle term that is factorization we get

∴ $x^{2}+ 17x -15x -255=0\\x(x+17)-15(x+17)=0\\(x-15)(x+17)=0\\\therefore x-15 =0\ or\ x+17=0\\\\\textrm{x cannot be negative i.e -17}\\\therefore x=15$

∴ Width x = 15 yard

∴ Length = 4 + 2x = 4 +2 × 15 = 34 yard

The dimensions of the rectangle are

length = 34 yards

width = 15 yards

5 0

4 years ago

(need done quickly)

djyliett [7]

The error is that he probably forgot the decimal point thus causing him to say '"hundred" instead of "and" for the decimal point.

3 0

4 years ago

Please help!!!!!!!!!!!

adelina 88 [10]

Answer:

9/4 *(x-2)

Step-by-step explanation:

Replace xa and y in the given function then solve for y

8 0

3 years ago