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3 years ago

If f(x)=2x^2+5 square root (x-2) complete the followinf statement: f(3)=

Mathematics

1 answer:

12345 [234]3 years ago

4 0

Answer:f(3) = 23

Step-by-step explanation:

2(3)² + 5√(3 - 2)

f(3) = 2(9) + 5√(1)

f(3) = 18 + 5(1)

f(3) = 18 + 5

f(3) = 23

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Which term of the AP 21, 18, 15 ...... is -81 ?

amid [387]

Given AP is 21 ,18,15,...

First term = 21

Common difference = 18-21 = -3

Let an = -81

We know that

an = a+(n-1)d

⇛21+(n-1)(-3) = -81

⇛ 21-3n+3 = -81

⇛24-3n = -81

⇛ 24+81 = 3n

⇛ 105= 3n

⇛ n = 105/3

⇛ n = 35

35th term of the AP is -81.

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2 years ago

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borishaifa [10]

Answer:

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2 years ago

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Step-by-step explanation:

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2 years ago

A rectangular banner covers an area of 2 7/8ft2. The length of the banner is 3/4ft. What is the width of the banner in ft?

hichkok12 [17]

Answer:

Width of the rectangular banner is $3\frac{5}{6}$ ft.

Step-by-step explanation:

Area of the rectangular banner = $2\frac{7}{8}$ square feet

= $\frac{23}{8}$ square feet

Area of rectangle is given by,

Area = Length × Width

Length of the banner = $\frac{3}{4}$ feet

From the formula,

$\frac{23}{8}=\frac{3}{4}\times W$

W = $\frac{\frac{23}{8} }{\frac{3}{4} }$

= $\frac{23}{8}\times \frac{4}{3}$

= $\frac{23}{6}$

= $3\frac{5}{6}$ ft

Therefore, width of the rectangular banner is $3\frac{5}{6}$ ft

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2 years ago