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Alex777 [14]
2 years ago
7

Brian is drawing a scale diagram of a building. for every 10 m of the building he draws a line 5 cm long. Bryn thinks he is usin

g a ratio of 2:1. Alun thinks Bryn is using a ratio of 200:1, is either of them correct? explain your answer ​
Mathematics
1 answer:
ivann1987 [24]2 years ago
7 0

Answer:

200:1, Bryn is correct.

Step-by-step explanation:

Each 10 m is represented by a 5cm length on the diagram.  We first note that 100 cm = 1 meter.   5 cm is (0.5 cm)*(1 meter/100 cm) =0.05 meters.

The 0.05 meters on the diagram represents 10 meters on the actual building.  The ratio is (10 meters/0.05 meters) or 200:1.  This is what Bryn believes is the ratio.  

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Answer:

64

Step-by-step explanation:

Marcello sells coupon books to his neighbors

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Therefore the total number of coupons that all neighbors will get can be calculated as follows

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Hence the whole neighbors will get

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8 0
3 years ago
41) Gabriella invests $8,193 in a retirement
nataly862011 [7]

Answer:

Option C. \$34,252.67  

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

A=P(1+\frac{r}{n})^{nt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

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in this problem we have  

t=18\ years\\ P=\$8,193\\ r=0.08\\n=6  

substitute in the formula above  

A=\$8,193(1+\frac{0.08}{6})^{6*18}=\$34,252.67  

4 0
3 years ago
Brazilian footballer ronaldo scored 247 goals in 343 matches
vovikov84 [41]

Answer: Ferenc

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512 / 5.28 = 0.97 goals for every match

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5 0
3 years ago
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Number D is the correct answer I think
3 0
3 years ago
E) 3 - 2x = 15 <br>what is x​
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