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2 years ago

I really need help I don’t understand this that well

Mathematics

1 answer:

marin [14]2 years ago

6 0

Answer:

They give you the answer just keep going until you get the same answer or use the inverse of what they did

Step-by-step explanation:

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siniylev [52]

Answer:

Slant height (s)= 12.1 cm

Step-by-step explanation:

Given: Base= 4.5 cm.

Surface area of right square pyramid= 129.5 cm.

First, calculating slant height (s) of right square pyramid.

Surface area of square pyramid= $(a^{2} +2\times a\times s)$

a= side of square base.

s= slant height

∴ $129.5= (4.5^{2} + 2\times 4.5\times s)$

⇒ $129.5= (20.25+2\times 4.5\times s)$

⇒ $129.5= (20.25+9\times s)$

Now, opening the parenthesis and subtracting both side by 20.25.

⇒ $109.25=9\times s$

cross multiplying both side

∴ Slant height (s)= 12.1

5 0

3 years ago

52:10

ziro4ka [17]

is 4 the answer

16 square us 4 nor 8

3 0

2 years ago

-6k + 7k what's the answer

lesya [120]

The answer is k!!!!!!!!

5 0

3 years ago

Read 2 more answers

What two numbers multiply to -14 and add to -5

krek1111 [17]

Answer:

these are two answers i got

-14=

-5=

6 0

2 years ago

Read 2 more answers

Serena is building a bookcase she cuts two pieces of wood from one board one piece is 1 7/8 feey long and another is 3.5 ft long

Vladimir79 [104]

Answer:

$\frac{43}{8}$ feet

Step-by-step explanation:

The total change is the sum of the length of two boards she cut.

First board length is 1 7/8th feet. Let's change to improper fraction:

1 7/8 = 15/8 feet

Second board lengrh is 3.5 feet, or 3 1/2 feet. Let's change to improper fraction:

3 1/2 = 7/2 feet

Let's add the two:

$\frac{15}{8}+\frac{7}{2}\\=\frac{15+28}{8}\\=\frac{43}{8}$

The change in original board is 43/8 feet

3 0

2 years ago