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3 years ago

Find the surface area of the square pyramid.

Mathematics

1 answer:

AysviL [449]3 years ago

5 0

Answer:

add the 5+5 =10

Step-by-step explanation:

5+5=10

hope that helps

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-2,-7,-12 ,.... is an arithmetic sequence Find the sum of its first 20 terms ?

nlexa [21]

Given sequence:

-2,-7,-12 ,..

Unknown;

Find the sum of the first 20 terms = ?

Solution:

The sequence is -2,-7,-12 ,..

To find he sum of n-terms of a sequence, we use the expression below;

Sₙ = $\frac{n}{2} (2a + (n-1)d)$

where n is the number of terms = 20

a is the first term = -2

d is the common difference= -7 - (-)2 = -5

Now input the parameters and solve;

Sₙ = $\frac{20}{2} (2(-2) + (20 - 1) x -5)$

Sₙ = 10(-4 + -5(19)) = 10(-99) = -990

The sum of the first 20 terms of the sequence is -990

4 0

3 years ago

Plz help. jus wanna answer :)

skad [1K]

Answer:

The measure of uT is given = 31.6

and it is given ,that WV bisect the line UT

so,the measurement of US = 31.6/2

 = 15.8 

hope it helps and your day will be full of happiness

8 0

2 years ago

Which expression has a value that is equivalent to 5n + 13 when n=−5 ?

Orlov [11]

5(-5)+13=-25+13=-12
the answer would be 4n+8
hope this helps!

8 0

3 years ago

Read 2 more answers

5a please :) I don't know the formula

Naddika [18.5K]

S.A = (2×area of base) + area of lateral faces
Area of lateral faces = area of base × height

Area of lateral faces = 19×4×8=608
S.A = (2×19×4)+608
=760

3 0

3 years ago

Larinda cooked a 4-kilogram roast. The roast left over after the meal weighed 3 kilograms. How many grams of roast were eaten du

blsea [12.9K]

Answer:

1 kilogram was eaten

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers