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antiseptic1488 [7]
3 years ago
8

Help!

Mathematics
2 answers:
Ostrovityanka [42]3 years ago
8 0

Answer:

a

Step-by-step explanation: I looked it up

saw5 [17]3 years ago
3 0

Answer:

( a )   The system of equations:

2 r + b = 8.40

3 r + b = 9.35

( c )  Each item costs:

b = $6.50,  r = $0.95

Step-by-step explanation:

Is it right? Tell me if it isn't.

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Which equation represents the line passing through the points (4, −1) and (1, 0)? Select one: A. x + 3y = 1 B. 3x + y = 1 C. x −
Alekssandra [29.7K]

Answer:

Step-by-step explanation:

Gradient of a line =( y2 - y1)/x2 - x1

From the question, x1=4,y1=-1,x2=1,y2=0.

Therefore, substitute for these values in the above formula

m = 0-(-1)/1-4

= 0+1/-3

= -1/3.

Therefore, y-y1/x-x1 = -1/3

y - y1 = -1/3(x - x1)

y - (-1) = -(x-x1)/3

y+1 = - (x - 4)/3

Multiply through by 3

3y+3= -x+4

3y +x=4-3

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Therefore the answer is A.

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3 years ago
kyle has 105 baseball cards and must give 2/5 of his cards away. how many cards will kyle give away? what fraction of his cards
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He has 3/5 of his cards left because he had 62/105 of his cards and that simplified is 3/5
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Examine the following graphed system of linear inequalities.​
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Step-by-step explanation:

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The combined area of two squares is 80 square centimeters. Each side of one square is twice as long as a side of the other squar
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The length of each side of the larger square is 8 cm.

<u>Step-by-step explanation</u>:

Step 1 ;

  • The combined area of two squares = 80 sq.cm
  • The side of small square = x
  • The side of larger square = 2x

Step 2 :

Area of the square = a^2

Area of small square + area of large square = 80

x^2 + (2x)^2 = 80

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5x^2 = 80

x^2 = 80/5

x^2 = 16

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Step 3 :

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4 years ago
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