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KATRIN_1 [288]
3 years ago
7

Solving multi-step equations 2(x + 7) – 34 = 4x – 11x + 4(x - 1)

Mathematics
2 answers:
exis [7]3 years ago
7 0

Answer:

x=16/5 or 3.2 or 3 1/5

Step-by-step explanation:

2(x + 7) – 34 = 4x – 11x + 4(x - 1)

2x+14-34=4x-11x+4x-4

2x-20=-3x-4

+3x     +3x

5x-20=-4

  +20  +20

5x=16

/5   /5

x=16/5 or 3.2 or 3 1/5

Zarrin [17]3 years ago
6 0

Answer:

x = 16/5

Step-by-step explanation:

2x + 14 -34 = 4x - 11x + 4x - 4

2x - 20 = -3x - 4

5x = 16

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Which ordered pair is a solution of this<br> equation?<br> -3x + 7y - 6<br> =
Mumz [18]

Answer:

There are actually an infinite number of ordered pairs that will satisfy the equation y=3x+7 including (-1,4), (0,7) and (1, 10).

Step-by-step explanation:

5 0
3 years ago
Please help thanks I appreciate it! :)
salantis [7]

Answer:

Step-by-step explanation:

120 x .6 =72

120-72 = 48

48x .6 = 28.8

72+28.8 = 100.8

She sold approximately 101 cups of coffee

5 0
3 years ago
20 Point!
ludmilkaskok [199]

determinant: \sqrt{b^2-4ac}

(a) x^2+4x+5=0\\D=4^2-4\cdot1\cdot5={-4}\\D

D<0 means there are no real roots. there are two complex roots with imaginary components.

(b) D=16+20=36>0

D>0 means there are two real roots

(c) D = 20^2-4*4*25 = 0

D=0 means there is one real root with multiplicity 2


7 0
4 years ago
Sari has a bag containing 6 half-dollar and 3 dollar coins.what is the total mass of the coins in saris bag?
Nataly_w [17]
6 half dollar coins would= $3.00 so you would add $3.00+$3.00=$6.00
5 0
3 years ago
Read 2 more answers
A rectangle has a length that is 9 feet less than four times its width. Its area is 90 square feet
kramer

Answer:

The length of rectangle is 15\ ft

The width of rectangle is 6\ ft

Step-by-step explanation:

Let

x-----> the length of rectangle

y----> the width of rectangle

we know that

The area of rectangle is equal to

A=xy

A=90\ ft^{2}

so

90=xy -----> equation A

x=4y-9 -----> equation B

substitute equation B in equation A and solve for y

90=(4y-9)y

4y^{2}-9y-90=0

using a graphing calculator

The solution is

y=6\ ft

Find the value of x

x=4y-9  -----> x=4(6)-9=15\ ft

5 0
4 years ago
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