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amid [387]
3 years ago
8

Explain how to make these couculations mentally a. 99x6 b. 99x15

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
6 0

Answer:

a is 594 and b is 1485

Step-by-step explanation:

puteri [66]3 years ago
5 0

Answer:

a. 594 b. 1485

Step-by-step explanation:

do it step by step.

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8 0
3 years ago
Una ciudad tenía 8000 habitantes a final del año 2000. Cada año su población se incrementa en un 0.5 %
Digiron [165]

Answer:

The correct answer is 2030.

Step-by-step explanation:

To start we must analyze the information we have.

We know that a city has 8000 inhabitants and that each year this number increases by 0.5%. That means that <u>each year it has 40 more inhabitants</u>:

(8000 . 0,5) : 100 = 40

Having this information we could do a cross multiplication:

1 year ------- 40 inhabitants

x years ------- 81200

81200 = 40.x

x = 81200 : 40

x = 2030

In this way we can verify that the correct answer is 2030.

4 0
3 years ago
HELP I attracted a picture????
posledela

Answer:

D. 187 m²

Step-by-step explanation:

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34 x 11 ÷ 2 = 187

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6 0
3 years ago
A country's population in 1993 was 94 million. in 1999 it was 99 million
Ulleksa [173]

Answer:

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Step-by-step explanation:

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