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Nadya [2.5K]
3 years ago
9

Twice the difference of a number And 6 equals 5

Mathematics
1 answer:
Annette [7]3 years ago
3 0

Answer:

x = 11/2

Step-by-step explanation:

solve : 2x-6 = 5

2x-6+6= 5+6   add 6

2x = 11   divid by 11

x = 11/2

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16-25(b+3) square
Andre45 [30]
Since 16 and 25 are perfect squares you can factor the first part.
4^2-5^2(b+3)^2
=(4-5(b+3))(4+5(b+3))
=(4-5b-15)(4+5b+15)
=(-11-5b)(19+5b)

Which can be expanded if necessary,
= -209+150b-25b^2
4 0
3 years ago
You decide to begin selling glow sticks at the local star wars convention. Your cost for each glow stick is $2.02 plus you have
kenny6666 [7]

You would have to sell approximately 52 bracelets per week in order to pay your fee.

190 ÷ 3.60 = 52.7

4 0
3 years ago
Need help with geometry question
shtirl [24]
Answer:
X=17
Angle K=110 degrees
Angle L= 70 degrees
Angle M= 110 degrees
Angle N= 70 degrees


Explanation:
6x + 8 + 2x +36=180
8x + 44= 180
8x = 136
X = 17

6(17)+8
102+8
110

2(17)+ 36
34+36
70

110 + ? =180
180-110= 70

70 + ?=180
180-70=110
5 0
1 year ago
An item is regularly priced at $55 . Carlos bought it at a discount of 95% off the regular price.
jeka57 [31]

Answer:

95/100=x/55

x=52.25

55-52.25

Answer is: 2.75 dollars

3 0
2 years ago
Read 2 more answers
O perímetro de um campo retangular é de 80 metros e sua area é de 320 metros quadrados. Encontre as dimensões do campo, corrija
dalvyx [7]

Answer:

Comprimento: 28.9 m; Largura: 11.1 m

Step-by-step explanation:

P = 2(C + L) = 80

A = CL = 320

2(C + L) = 80

CL = 320

C + L = 40

CL = 320

C = 40 - L

CL = 320

(40 - L)L = 320

40L - L^2 = 320

L^2 - 40L + 320 = 0

aL^2 + bL + c = 0

L = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}

L = \dfrac{-(40) \pm \sqrt{(-40)^2 - 4(1)(320)}}{2(1)}

L = \dfrac{40 \pm \sqrt{1600 - 1280}}{2}

L = \dfrac{40 \pm \sqrt{320}}{2}

L = \dfrac{40 \pm \sqrt{64 \times 5}}{2}

L = \dfrac{40 \pm 8\sqrt{5}}{2}

L = 20 \pm 4\sqrt{5}

L \approx 28.9 or L \approx 11.1

L = 28.9

C = 40 - L = 40 - 28.9 = 11.1

Answer: Comprimento: 28.9 m; Largura: 11.1 m

8 0
3 years ago
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