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skad [1K]
3 years ago
6

7. If a school has 70 computers in the ratio of 3 desktops for every 4 laptops, how many

Mathematics
1 answer:
stealth61 [152]3 years ago
6 0

Step-by-step explanation:

As ratio of desktops to laptops=3:4

Take no. of desktops= 3x

Take no. of Laptops=4x

Total no. of desktops+ Total no. of laptops = Total no. of computers

3x+4x=70

7x=70

x=10

Hence, the total no, of desktops= 3x

Hence, Total no. of desktops= 3×10

=30 desktops

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Solve each inequality(x+4)(x-8)≥0
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Answer: x

≤

−

4

or

x

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Step-by-step explanation:

8 0
2 years ago
A test consists of 10 problems and students are told to answer any 4 of these questions. In how many different ways can they cho
ki77a [65]
In this item, it is not given that there has to be specific arrangement or order as to how the questions are going to be answered. Hence, the concept that can be used in order to answer this item is the concept of combination which states that, 
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This is read as "combination of n taken r". In this item, n = 10 and r = 4. Substituting the known vaues to the equation,
          10C4 = (10!) / (4!)(10 - 4)!
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Therefore, the number of which is which the questions can be answered is 210. 
6 0
3 years ago
Match each equation on the left to the mathematical property it uses on the right
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3 0
3 years ago
What is the domain and range and function ??? Then can u explain how u did it please and thank you
enot [183]
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- 10 \leqslant x \leqslant 10
and the range is
- 5 \leqslant y \leqslant 5
Domain is x values (horizontal axis), while range is y values (vertical axis). On a line like this one, domain is calculated from the left most point to the right most, while range is calculated from the down most to the upmost.
Because this line is a solid line rather than a dotted line, less than or equal to
\leqslant
signs are used rather than just
<
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6 0
3 years ago
Bailey’s Cakes and Pastries baked a three-tiered cake for a wedding. The bottom tier is a rectangular prism that is 18 centimete
Pavlova-9 [17]
The bottom tier is 18+12+8 = 38
the middle tier is 12+8+6 = 26
the top tier is 4x3 = 12
the total is 76


The formula for doing this is Length plus Width plus Height.

8 0
3 years ago
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