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Elan Coil [88]
3 years ago
14

The length and width of a rectangular patio are, (x + 8) feet and (x + 6) feet,

Mathematics
2 answers:
Leni [432]3 years ago
6 0

Answer:

Area = length x width

160 = (x+8)(x+6)

160 = x2 + 14x + 48

x2 + 14x - 112 = 0  and solve with the quadratic formula and get x=-7+sqrt(161)

Step-by-step explanation:

Igoryamba3 years ago
3 0

Answer: x = √73

Step-by-step explanation: Ration = (x+8) : (x+6)

Let x be the length and breadth

Length = (x+8)x

breadth = (x+6)x

Area = 160 feet sq.

= (x+8)x = x² + 8x = length

(x+6)x = x²+6x = breadth

→x²+8x+x²+6x = 160

2x²+14 = 160

2x² = 146

x² = 73

x= √73

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Circular fountain has 18cm base blueprints scale 3cm to 4 feet what is actual area of base after built
GuDViN [60]
\bf \cfrac{\stackrel{model~cm}{3}}{\stackrel{actual~ft}{4}}\qquad \qquad \cfrac{\stackrel{model}{18}}{\stackrel{actual}{a}}=\cfrac{3}{4}\implies \cfrac{18\cdot 4}{3}=a
6 0
4 years ago
A recent poll of 1500 new home buyers found that 60% hired a moving company to help them move to their new home. Find the margin
Mrac [35]

Answer:

The margin of error M.O.E = 2.5%

Step-by-step explanation:

Given that;

The sample size = 1500

The sample proportion \hat p = 0.60

Confidencce interval = 0.95

The level of significance ∝ = 1 - C.I

= 1 - 0.95

= 0.05

The critical value:

Z_{\alpha/2} = Z_{0.05/2} \\ \\  Z_{0.025} = 1.96 (From the z tables)

The margin of error is calculated by using the formula:

M.O.E = Z_{\alpha/2} \times \sqrt{\dfrac{\hat p(1 -\hat p)}{n}}

M.O.E = 1.96 \times \sqrt{\dfrac{\hat 0.60(1 -0.60)}{1500}}

M.O.E = 1.96 \times \sqrt{\dfrac{0.24}{1500}}

M.O.E = 1.96 \times \sqrt{1.6 \times 10^{-4}}

M.O.E = 0.02479

M.O.E ≅ 0.025

The margin of error M.O.E = 2.5%

8 0
3 years ago
Write (2i(1+i)+5)/(1+3i) as a complete number in standard form.
olasank [31]
  • Answer: basicily its 0

6 0
4 years ago
Find x use picture for question. ​
katrin2010 [14]

Answer:

x = 8

Step-by-step explanation:

Firstly, create an equation or formula

- because they are congurent, IN = AT, so:

2x+10 = 26 (minus 10 from both sides)

2x = 16 (divide both sides by 2)

x = 8

Sub into the formula:

2 x 8 + 10 = 26

26 = 26

8 0
3 years ago
Read 2 more answers
9(s)+3=57 what is dose the letter s represent in this quation
xz_007 [3.2K]
57-3= 54 9x6= 54 s=6
3 0
3 years ago
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