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Ira Lisetskai [31]
3 years ago
8

If BC = CD and AB = 23, what is BD?

Mathematics
1 answer:
True [87]3 years ago
7 0
BD = 46

Explanation:
BC = CD and AC is used for both triangles so AD MUST = AB.
If AB = 23, then AD = 23.
BD = AB + AB
BD = 23 + 23
BD = 46
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Find the greatest number that will divide 63, 45 and 69 so as to leave the same remainder.
jeka57 [31]

Answer:

6

Step-by-step explanation:

Let n be unknown divisor and a be the same remainder, then

63=q_1\cdot n+a\\ \\45=q_2\cdot n+a\\ \\69=q_3\cdot n+a

Subtract a from all equalities:

63-a=q_1\cdot n\\ \\45-a=q_2\cdot n\\ \\69-a=q_3\cdot n

Subtract them:

63-45=(q_1-q_2)n\Rightarrow 18=(q_1-q_2)n\\ \\69-63=(q_3-q_1)n\Rightarrow 6=(q_3-q_1)n\\ \\69-45=(q_3-q_2)n\Rightarrow 24=(q_3-q_2)n

The greatest number is 6. When you divide numbers 63, 45, 69 by 6, you'll get remainders 3, 3, 3, respectively.

7 0
3 years ago
Add –12 + 20, then divide the sum by –4
Illusion [34]
-12 + 20 = 8

then divide the answer by -4

8/(-4) = -2

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-2 is your answer

hope this helps
7 0
3 years ago
Read 2 more answers
Find the total surface area of the<br> following square pyramid:<br> 9 cm<br> 10 cm<br> SA = [?]cm2
MakcuM [25]

Answer:

280 cm2

Step-by-step explanation:

1)find the area of square

A=LW

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2) find the area of triangle

A=B×H÷2

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Coz,there are 4 triangle we multiple by 4

=45×4

=180

3)find the total surface area by adding the two

=100+180

=280cm2

4 0
3 years ago
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kicyunya [14]

Step-by-step explanation:

the one is the middle top the one in the middle bottom and the one in the bottom right

5 0
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What is the difference between a pot and a saucepan?
andriy [413]
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6 0
4 years ago
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