3 years ago

What is the value of X A 21 B 41 C 20 D 22

Mathematics

1 answer:

White raven [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Let the bottom be y for the small triangle

So the total length of the bottom is 2y

We can use ratios to solve

x-1 1y

----- = --------

42 2y

Canceling the y's

x-1 1

----- = --------

42 2

Using cross products

2(x-1) = 42

Divide by 2

x-1 = 21

Add 1 to each side

x-1+1=21+1

x = 22

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you practice the piano for 30 min. each day. Write and solve an equation to find the total time t you spend practicing the piano

Tom [10]

Lets get all the information we need first.
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t = 7day(30 min/day)
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7 0

2 years ago

Read 2 more answers

Explanation about Cardinal number Carolyn relation cardinals

nalin [4]

Answer:

Cardinal Numbers

The cardinality of a group represents the number of objects available in that group.

The number of elements or members in a set is the cardinal number of that set. ...

For example, set A = {1, 3, 6, 9, 10, 12, 18}, the cardinal number of set A is 7.

Step-by-step explanation:

i don't no kung true hehe