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Marrrta [24]
3 years ago
5

4 x 5 - (2² - 2) =? (18 ÷ 3) + (3² - 7) =?

Mathematics
1 answer:
OverLord2011 [107]3 years ago
7 0
4x5-(2 (2) - 2 ) = 14
(18/ 3) + (3 (2) - 7) 8
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If a=8 and b=5 and x=4 and y=6m -2 what is the value of m ?
Serga [27]

Answer:

m = 2

Step-by-step explanation:

Given:

x = 4

y = 6m - 2

a = 8

b = 5

Required:

Value of m

SOLUTION:

x and y are segments of a chord divided when it intersects another chord that also has segments a and b.

According to the Intersecting chords theorem, a*b = x*y

Thus:

8*5 = 4*(6m - 2)

Solve for m

40 = 24m - 8

40 + 8 = 24m - 8 + 8

48 = 24m

\frac{48}{24} = \frac{24m}{24}

2 = m

The value of m = 2

3 0
3 years ago
4. Use the diagram below to answer the question
ludmilkaskok [199]

Answer:

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Step-by-step explanation:

Using Pythagoras' identity on the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.

Let h represent the height of the balloon above ground, then

h² + 50² = 400², that is

h² + 2500 = 160000 ( subtract 2500 from both sides )

h² = 157500 ( take the square root of both sides )

h ≈ 397 m ( to the nearest metre )

4 0
3 years ago
Why is P(A) •P(B/A) = P(B) • P(A/B)<br> HELP ME QUICK ASAP
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Step-by-step explanation:

Why is P(A) •P(B/A) = P(B) • P(A/B)

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Step-by-step explanation:

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6 0
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7 0
4 years ago
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