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Sergeu [11.5K]
3 years ago
12

Please help!! How do you do number 1?

Mathematics
1 answer:
alisha [4.7K]3 years ago
6 0
Do a ratio tall over shadow. How tall is tree / shadow. How tall is person / shadow then cross multiply. X/7.5 =5/3. 37.5=3x. Divide by 3 answer 12.5
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Ian owns a small business selling used books. He knows that in the last week 19
Softa [21]

Step-by-step explanation:

last week there were 19+30+77 = 126 customers.

19/126 = 1/14 paid cash.

30/126 = 5/21 paid by debit card.

77/126 = 11/18 paid by credit card.

next week he expects 1800 customers.

that is compared to 126 a factor of

1800/126 = 300/21 = 100/7

now we actually only need to apply the same factor to any part of the total sum to get their share in the new total sum.

it simply follows the rule

(a + b + c) × d = ad + bd + cd

so,

77 × 100/7 = 11 × 100 = 1100 customers are expected to pay per credit card.

5 0
2 years ago
X + y = 3 <br>-2x + 4y = 6
Finger [1]
I'm assuming this is a system of equations you want solved so,

x = -y + 3

-2(-y+3)+4y = 6
2y - 6 + 4y = 6
6y = 12
y = 2

x + 2 = 3
x = -1

(-1,2)
7 0
3 years ago
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Write this whole number as a product of prime numbers.<br><br> 50
Lostsunrise [7]

Answer:

Prime factorization: 50 = 2 x 5 x 5

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One third of a number
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Well the thing is you didn't tell us which number but if it is 12 then i strongly believe that the answer is 3/9
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