3 years ago

What are the missing numbers?

1 answer:

4 0

2x - 3 = 57 because they are alternate exterior angles

Add 3 to both sides: 2x = 60

Divide both sides by 2: x = 30

Check: 2(30) - 3 = 60 - 3 = 57

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In a certain clothing store, 3 shirts and 5 ties cost $60, and 2 shirts and 3 ties cost $39. What is the cost of each shirt?

Dovator [93]

Let shirts be x and ties be y
3x+5y=$60 Equation 1 (Equation 1 will be denoted by *)
2x+3y=$39 Equation 2 (Equation 2 will be denoted by !)
*x2 6x + 10y = $120
!x3 6x + 9y = $117
*-! y = 120-117 =3

Ties are $3 each
Substitute this value back into one of the original 2 equations:
3x+5y=$60
3x+(5x3) = 60
3x+15=60
3x=45
x=15

Shirts are $15

6 0

3 years ago

Read 2 more answers

A ball is thrown from an initial height of 3 feet with an initial upward velocity of 36 ft/s. The ball's height h (in feet) afte

Anuta_ua [19.1K]

Answer:

t = 0.55 s and t = 1.14 s

Step-by-step explanation:

4 0

2 years ago

Х+2у=5

Igoryamba

Answer:

x=5 y=0

Step-by-step explanation:

$x = - 2y + 5 .......(3)\\ putt \: value \: in \: eq \: 2 \\ 3( - 2y + 5) + 6y = - 10 \\ - 6y + 15 + 6y = - 10 as \: te \: value \: after \\subtraction \:is \: 0 \\ y = 0 \\ put \: the \: value \: of \: y \:in \: eq3 \\ x = - 2(0) + 5 \\ x = 5$

8 0

2 years ago

Which equation shows y+1/5=3x in standard form?

xz_007 [3.2K]

I hope this helps you

3 0

3 years ago

Simplify the expression 9^7/ 9^9 60 points

KATRIN_1 [288]

Answer:

1/9^2

Step-by-step explanation:

simplify

9^(7-9)

simplify further

9^-2

simplify even more

1/9^2

5 0

1 year ago