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liubo4ka [24]
3 years ago
14

AO ⊥ (BCD)

Mathematics
1 answer:
Inga [223]3 years ago
4 0

Answer:

V = 272.3 cube units

The surface area is 418.34 square units

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The sum of the digits of a two-digit number is 8. If the digits are interchanged ,new number is 10 more than double the original
vova2212 [387]

Answer:

Original number 26.

Step-by-step explanation:

xy - two-digit number

1) x + y = 8

2) Original two-digit number can be written as

10*x + y

3) If the digits interchanged yx,

then the new number can be written as

10*y + x

4)  Double the original number is

2*(10*x + y)

5) New number is 10 more than double the original number

(10*y + x) - (2*(10*x + y)) = 10

6) Now we have the system of 2 equations:

x + y = 8

(10*y + x) - (2*(10*x + y)) = 10 -----> 10y + x - (20x + 2y) = 10 ---> 8y - 19x = 10

x = 8 - y

8y - 19(8 - y) = 10

8y - 152 +19y = 10

27y = 162

y = 6

x = 8 - y = 8 - 6 = 2

x = 2

So, x =2, y = 6.

Original number 26.

Check:

Original number 26.

New number 62.

Double of the original number = 2*26= 52.

New number is 10 more than double the original number :

62 - 52 = 10 True

6 0
3 years ago
Find the constant of variation for the relation and use it to write an equation for the statement. Then solve the equation 7 If
Juliette [100K]

Answer:

The required constant of variation is 4 and the equation is y=4xz over w (over meaning a fraction)

I don't know if you need a explanation on how to do this, just let me know if so.

Step-by-step explanation:

7 0
2 years ago
SOMEONE PLEASE HELP ME ASAP PLEASE!!!​
Alex17521 [72]

Answer:

BC=10

Step-by-step explanation:

BD-BC=14-4=10

4 0
3 years ago
Read 2 more answers
HELPPP PLZ I WILL GIVE 15囧rz and brainliest
kati45 [8]

Answer:

you are a lie you said you will give 15 points and its only 8

Step-by-step explanation:

6 0
3 years ago
A. A mother dolphin is 150.25 meters below sea level. Her calf is 45 meters below sea level.
soldi70 [24.7K]

Answer:

Idk

Step-by-step explanation:

8 0
3 years ago
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