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Rus_ich [418]
3 years ago
13

A(-3; 4) and B(0; -5) are two points c) Deduce that (OAB) is an isosceles triangle

Mathematics
1 answer:
miv72 [106K]3 years ago
8 0

Step-by-step explanation:

Calculate length of OA, OB and AB seperately.

There should be 2 wit the same lengths for it to be an isosceles ∆

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Step-by-step explanation:

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Two angles are supplementary and have a ratio of 1:4. what is the size of the smaller angle
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2 years ago
Read 2 more answers
The ratio of Val's savings to Dan is 2:3 at first. After Dan spent P3000.00, Val's saving became 11/3 more of that Dan's remaini
andrew11 [14]

Answer:

P.7500.00

Step-by-step explanation:

We are told that:

The ratio of Val's savings to Dan is 2:3 at first.

Now, Dan spent P3000.00 and Val's saving became 1⅓ more of that Dan's remaining savings.

Let's say the total amount of savings they had at first was x.

Thus;

Val had: 2x/5

Dan had: 3x/5

Now, Dan spent P3000.00.

So amount Dan has left = (3x/5) - 3000

We are told Val's savings is now 1⅓ = 4/3 times that of Dan's remaining savings

Thus; 2x/5 = (4/3)((3x/5) - 3000)

2x/5 = 12x/15 - 4000

Multiply through by 15 to get;

6x = 12x - (3000 × 15)

6x = 12x - 45000

Rearranging, we have;

12x - 6x = 45000

6x = 45000

x = 45000/6

x = P.7500

4 0
3 years ago
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