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lubasha [3.4K]
3 years ago
11

I AM IN NEED OF HELP THANKYOU

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
8 0
Oh okay I’m not going home I’m sorry I don’t have to sleep tueitu lol I
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A student gets 68 marks n therefore gets 85 percent total marks are?
mihalych1998 [28]

Answer:

There are 80 marks in total.

Step-by-step explanation:

Let the number of total marks be x.

The percentage score of the student can be written as the ratio

\displaystyle \frac{68}{x} = 85\%.

However,

\displaystyle 85\% = \frac{85}{100}.

Equating the two:

\displaystyle \frac{68}{x} = \frac{85}{100}.

Cross-multiply (that is: multiple both sides by 100x, the product of the two denominators) to get

85x = 68\times 100.

\displaystyle x = \frac{68\times 100}{85} = 80.

In other words, there are 80 marks in total.

4 0
3 years ago
5x -2y=18 what does x and y equal?
Ilia_Sergeevich [38]

Answer:

x,y\ could\ be\ any\ real\ numbers

Step-by-step explanation:

As\ a\ linear\ equation\ in\ two\ variable\ has\ infinite\ solutions,\\5x-2y=18, will\ also\ have\ infinite\ solutions\ and\ x\ and\ y\ can\ take\ any\ real\ values.

6 0
3 years ago
Work out b(4½-3⅔)+1⅔​
Zolol [24]

Answer:

2 \frac{1}{2}

Step-by-step explanation:

Change the mixed numbers to improper fractions

(\frac{9}{2} - \frac{11}{3} ) + \frac{5}{3} ← the LCM of 2 and 3 is 6

= \frac{9(3)}{2(3)} - \frac{11(2)}{3(2)} + \frac{5(2)}{3(2)}

= \frac{27}{6} - \frac{22}{6} + \frac{10}{6}

= \frac{5}{6} + \frac{10}{6}

= \frac{15}{6}

= \frac{5}{2}

= 2 \frac{1}{2}

6 0
3 years ago
A trapezoid has an area of 780 square meters. The height of the trapezoid is 40 ​meters, and the length of the longer base is tw
o-na [289]

Answer:

idk I'm just here for points sorry bro

6 0
3 years ago
If one bottle of soda costs .99, how much do three bottles cost? how much do they cost with 5% tax added on?
bija089 [108]
3 sodas cost $2.97 +.15 tax total $3.12
8 0
3 years ago
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