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Artyom0805 [142]
3 years ago
5

In a class test, +4 marks were awarded for the correct answers and -1 mark for the wrong answers. Student scores 40 marks. If hi

s correct answers were 11, find his wrong answers.
Mathematics
1 answer:
nikklg [1K]3 years ago
7 0

Step-by-step explanation:

Let <em>y</em> the number of wrong answers got.

11( + 4) + ( - 1)y = 40 \\ 44  - y = 40 \\  - y =  - 4 \\ y = 4

∴ He got 4 wrong answers.

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-2/3 times (-2 1/4)times 3/4 <br> Show work pls
mihalych1998 [28]
(-2/3)*(-2 1/4)*(3/4)   Convert the mixed fraction to improper fraction.
(-2/3)*(-9/4)*(3/4)   Then you multiply the numerators with numerators and                                             denominators with denominators

(-2*-9*3)           negative times negative is positive, so the negative sign is gone
-------------    
(3*4*4*)              The lines (-----) is the line of the fraction 

54/48            This is the product of this multiplication, now you need to simplify 
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9/8         And that would be the answer
           


3 0
3 years ago
What is the value of x so that the ordered pair (x, 1) is a solution to the equation 3x - y = 17?
Lisa [10]
3x-y=17
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4 0
3 years ago
A right triangular prism has a height of 26 cm and base edges of 10 cm, 24 cm, and 26 cm. What is the lateral area of the prism?
horrorfan [7]
The lateral area is 1560 cm².

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3 0
3 years ago
What numbers are always prime numbers?
VashaNatasha [74]
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Answer:

I think it's C, x-y-8=0

Step-by-step explanation:

5 0
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