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AlekseyPX
3 years ago
8

Can someone please help me with the answer to this?

Mathematics
1 answer:
labwork [276]3 years ago
8 0

Answer:

  • (-7, 7)

Step-by-step explanation:

y = -8x - 49

y = -x

  • -8x - 49 = -x
  • -8x + x = 49
  • -7x = 49
  • x = -7
  • y = - (-7) = 7
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robert borrowed $500 from his cousin to buy a new mountain bike. His cousin doesn't charge any interest, and robert makes a $10
Dmitriy789 [7]

Answer:

$50

Step-by-step explanation:

500÷10=50 ..............

7 0
4 years ago
Write a coordinate proof. Prove quadrilateral WXYZ, having vertices W(-5, 6), X(-1, 10), Y(1, 4), and Z(-2, -3) is a trapezoid.
Igoryamba

Answer:

The diagonals are bisectors of each other and meet at  (1, -5/2) but are not congruent, so WXYZ is a parallelogram and not a rectangle

Step-by-step explanation:

for parallelograms.

the diagonals intersect at the midpoints

W                             X

Z                             Y

Diagonals are  WY  and  XZ

WY :   (-4, -3) to  (6, -2)

midpoint is   [(-4 + 6)/2  ,  (-3 - 2)/2 ] = ( 1, -5/2 )

XZ :   (0, -1)  to  (2, -4)

midpoint is  [ (0 + 2)/2 ,  (-1 + -4)/2 ]  = (1, -5/2)

The diagonals are bisectors of eachother.

Next show that these diagonals are not congruent.

length of  WY  =  root (  (-4 - 6)^2  +  (-3 - (-2))^2 )

WY = root ( 100  +  1)

WY = root(101)

length of XZ  =  root (  (0 - 2)^2  +  ( -1 - -4)^2 )

XZ =  root (4  +  9) = root (13)

we see that  WY  is not equal to XZ

...

so  ..  quadrilateral WXYZ is a parallelogram but not a rectangle.

6 0
4 years ago
Multiply the polynomial x (3x-1)(2x+5) also what is the degree of the polynomial
Readme [11.4K]

Answer:

Result after multiplication of polynomial is: 6x^3+13x^2-5x

Degree of polynomial = 3

Step-by-step explanation:

The given polynomials are:

x(3x-1)(2x+5)

In order to multiply the given polynomials we have to work step by step. First of all the polynomials in the bracket will be multiplied and then their result will be multiplied with x.

So, multiplying the polynomials in round brackets first

=x(3x-1)(2x+5)\\= x\{3x(2x+5)-1(2x+5)\}\\=x\{6x^2+15x-2x-5\}\\=x(6x^2+13x-5)

Now multiplying with x

= 6x^3+13x^2-5x

Degree of a polynomial is the highest exponent of variable in the polynomial.

In the acquired result, the highest exponent of x is 3 so the degree is 3.

Hence,

Result after multiplication of polynomial is: 6x^3+13x^2-5x

Degree of polynomial = 3

3 0
3 years ago
Joy makes 6.5 litres of soup, correct to the nearest 0.5 litre. She serves the soup in 280 ml portions, correct to the nearest 1
Kazeer [188]

Answer:

Joy has not enough soup

Explanation:

 If Joy is serving correct to nearest 10 with  280 ml maximum.

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 Amount of soup required = 22 x 0.29 = 6380 ml = 6.38  L

 Amount of soup she has = 6.5-0.5 L=6 L

  Amount of soup she has < Amount of soup required

 So, Joy has not enough soup.

6 0
4 years ago
Read 2 more answers
1. What is the diameter of a circle with radius of 7 inches?
Mekhanik [1.2K]

Answer:

14 because the radius is half the diameter

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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