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Vesnalui [34]
3 years ago
6

They got a deal for tables and chairs in the shop. 45 tables cost 500 dollars. The deal gave them this same rate on chairs with

$750 worth of chairs. How many chairs were purchased?
Mathematics
2 answers:
Alex Ar [27]3 years ago
8 0

Answer:

$67

Step-by-step explanation:

45/500=×/750

x=67.50

hoa [83]3 years ago
5 0

Answer:

68 (or 67 but I think it's 68)

Step-by-step explanation:

45 tables is 500 dollars so each table is 11.(1). 750/11.(1) is 67.5 chairs. You cant  have half of a chair so it is 68 chairs.

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It’s 734.12 so I’m pretty sure it’s less than 800
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3 years ago
Read 2 more answers
The cost of a circular table is directly proportional to the square of the radius. A circular table with a radius of 50cm costs
Lana71 [14]

Answer:

£135 is the correct answer.

Step-by-step explanation:

Let C be the cost of table.

And let R be the radius of table.

Cost of table is directly proportional to square of radius.

As per question statement:

C\propto R^{2} or

C=a\times R^2  ....... (1)

where a is the constant to remove the \propto sign.

It is given that

C_1 = £60 and R_1 = 50\ cm

C_2 = ? when R_2= 75\ cm

Putting the values of C_1 and R_1 in equation (1):

60=a \times 50^2  ....... (2)

Putting the values of C_2 and R_2 in equation (1):

C_2=a \times 75^2  ....... (3)

Dividing equation (2) by (3):

\dfrac{60}{C_2}= \dfrac{a \times 50^2}{a \times 75^2}\\\Rightarrow \dfrac{60}{C_2}= \dfrac{50^2}{75^2}\\\Rightarrow \dfrac{60}{C_2}= \dfrac{2^2}{3^2}\\\Rightarrow \dfrac{60}{C_2}= \dfrac{4}{9}\\\Rightarrow C_2 = 15 \times 9 \\\Rightarrow C_2 = 135

So, <em>£135 is the correct answer</em>.

7 0
3 years ago
Please answer this question. I will give 100 points and brainliest. I need this done fast.
inessss [21]

Answer:

Answer is D) I and II only.

Step-by-step explanation:

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Find the difference -10-(-7)=
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Answer:

-3

Step-by-step explanation:

Since the - in -7 and the subtraction sign - are the same, you have to group them so now it is + (positive). -10 + 7 = -3

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The radius of a sphere with a surface area of 36pi square meters
Marysya12 [62]

Answer:

Step-by-step explanation:

surface area=4πr²=36π

r²=9

r=3

5 0
4 years ago
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