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Marysya12 [62]
3 years ago
9

a quiz has 25 questions every correct answer scores 3 points Each incorrect answer loses 2 points. A question not answered score

d 0 points. a student answers 15 questions 10 are correct how many points does he have?
Mathematics
1 answer:
alexandr1967 [171]3 years ago
5 0

Answer:

<u><em>20</em></u>

Step-by-step explanation:

10x3=30

5x-2=-10

10x0=0

30-10=20

20 points

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For every 1 litre of water used to make a medicine, 269ml of sucrose and 61ml of saline solution are used. Express the amount of
Burka [1]

Answer:

Step-by-step explanation:

1 litre = 1000 ml

water : Sucrose : Saline = 1000 : 269 : 61

This is simplest form. We cannot reduce this as 61 is a prime number and 1000; 269 will not come in 61th table or

We can say 100 ; 269 ; 61 don't have common term

8 0
3 years ago
After substituting, what is the first operation performed when evaluating 5 + (9 x minus 3) divide 2 for x = 5? addition multipl
ludmilkaskok [199]

Answer:

<h2>Multiplication.</h2>

Step-by-step explanation:

The given expression is

5+(9x-3) \div 2

For x=5, we have

5+(9(5)-3) \div 2

Notice that the first operation we need to do is multiplication, because that's the right order of operations when we solve these kind of expressions.

5+(45-3) \div 2

Then, we subtract

5+42 \div 2

Now, we divide

5+21

Finally, we sum

26

Therefore, the right answer is multiplication.

4 0
2 years ago
Read 2 more answers
Which figure has all of the following:
Marta_Voda [28]

Answer:

Step-by-step explanation:

I think its B and K, they both have 2 sets of parallel lines and they have no congruent sides. Also they look similar. Sorry if this doesn't help.

7 0
2 years ago
Solve by Elimination/Addition<br><br> {−6x−2y=−1618x+6y=48
tia_tia [17]

Answer:

201.5x-y=-6

Step-by-step explanation:

−6x−2y=−1618x+6y=48

Collect like terms

-6x+1618x-2y-6y=-48

1612x-8y=-48

Divide through by 8

1612x/8-8y/8=-48/8

201.5x-y=-6

6 0
3 years ago
Hộp I có 10 sản phẩm tốt, 2 hỏng; hộp II có 20 sản phẩm tốt, 4 hỏng. Chọn ngẫu nhiên một hộp, rồi từ đó lấy ta một sản phẩm.
GaryK [48]

Answer:

60

Step-by-step explanation:

6 0
2 years ago
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