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3 years ago

11

I AM IN NEED OF HELP THANKYOU

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