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3 years ago

Find the 22nd term of the arithmetic sequence whose common difference is d=2 and first term is a1 = -25

Mathematics

2 answers:

Cerrena [4.2K]3 years ago

8 0

Answer:

Hello

a=-25

d=2

a22=a+(n-1)d

=-25+(22-1)2

=-25+(21)2

=-25+42

=17

Step-by-step explanation:

Inessa [10]3 years ago

6 0

Answer:

Step-by-step explanation:

an=a1+(n-1)d

a22=-25+21(2)

a22=17

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A bakery has 18 large trays of bagels and 20 small trays of bagels. Each large tray holds 30 bagels and each small tray holds 15

posledela

840 ( at least I think lol)

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2 years ago

If f(x) =69-15x then f(f^-1(x))

xenn [34]

If f(x)=69-15x then $f(f^{-1}(x))=x$

Given :

$f(x)=69-15x\\$

Lets find out $f^{-1}(x)$ . The steps to find out f inverse are

Replace f(x) by y

$y=69-15x\\Interchange \; the \; variables\\x=69-15y\\solve \; for \; y\\x-69=-15y\\Divide \; by \; -15\\\frac{-x+69}{15} =y\\Replace \;y \;with \; f^{-1}\\f^{-1}=\frac{-x+69}{15}$

Now we find $f(f^{-1}(x))$

Replace inverse function in the place of x in f(x)

$f(f^{-1}(x))=f(\frac{-x+69}{15} )=69-15(\frac{-x+69}{15})=69-(-x+69)=69+x-69=x\\f(f^{-1}(x))=x$

Learn more :

brainly.com/question/11242094

8 0

2 years ago

Please please help me out!!!!!

Sliva [168]

Answer:

The answer to your question is: g(3) = 34

Step-by-step explanation:

Function g(x) = 4(x)² - 3(x) + 7

g(3) = 4(3)² - 3(3) + 7 substitution

g(3) = 4(9) - 3(3) + 7 simplify

g(3) = 36 - 9 + 7

g(3) = 36 - 2

g(3) = 34

7 0

3 years ago

You withdraw $29.79 from your bank account. Now your balance is $20.51. Write and solve an equation to ﬁnd the amount of money i

avanturin [10]

X-29.79=20.51 or 29.79+20.51=x

x=50.30

3 0

3 years ago

Read 2 more answers

9. Find the volume of the triangular pyramid. (2pts)-10 mI9 m16 m

Makovka662 [10]

Answer:

240 m³

Explanation:

The volume of a pyramid is equal to:

$V=\frac{1}{3}\times B\times H$

Where B is the area of the base and H is the height of the pyramid.

Then, the base of the pyramid is a triangle, so the area of a triangle is equal to:

$B=\frac{b\times h}{2}$

Where b is the base of the triangle and h is the height of the triangle. So, replacing b by 16 m and h by 9 m, we get:

$B=\frac{16\times9}{2}=\frac{144}{2}=72m^2$

Finally, replacing B by 72 m² and H by 10 m, we get that the volume of the pyramid is equal to:

$V=\frac{1}{3}\times72\times10=\frac{1}{3}\times720=240m^3$

Therefore, the volume is 240 m³

4 0

1 year ago