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Umnica [9.8K]
3 years ago
9

The last section is not correct the answer should be

Mathematics
1 answer:
Zigmanuir [339]3 years ago
4 0
2. 90 is 1/10 of what ? : 
    90 = 1/10x...multiply both sides by 10, this eliminates the 10 on the right
    90 * 10 = x
    900 = x <===
4. 5000 is 1/10 of what ? :
    5000 = 1/10x ...multiply by 10
    5000 * 10 = x
    50,000 = x <===
8. 2000 : 10 times as much = 20,000 : 1/10 as much = 1/10(2000) = 200
9. 400 : 10 times as much = 4000 : 1/10 as much = 1/10(400) = 40
10. 60 : 10 times as much = 600 : 1/10 as much = 1/10(60) = 6
12. u got it correct..it is 30,000
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7 0
2 years ago
A right-angled triangle has sides of lengths (x+5)cm, (x-3)cm and 9cm. Calculate the value of x
Arturiano [62]

Answer:

x=4.0625 cm

Step-by-step explanation:

The Pythagorean theorem states that the square of the hypotenuse of a right triangle equals the sum of the squares of the two legs.

Not knowing which is the hypotenuse, lets assume that (x+5)cm is the hypotenuse:

(x+5)^2= 9^2+(x-3)^2

(x^2+10x+25)=81+(x^2-6x+9)

x^2+10x+25=81+x^2-6x+9

16x=65

x=4.0625

Checking:

(4.0625+5)^2=9^2+(4.0625-3)^2

82.1289=82.1289

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3 years ago
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I believe the answer is 2783 for 1 a - either
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2 years ago
Just the second one!
marusya05 [52]

Answer:

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