Each question Sandra answers incorrectly changes her overall score by - points. Sandra's
1 answer:
Answer: -5
Step-by-step explanation:
For each question Sandra answered incorrectly her overall score was changed by -1 point.
Her overall score was -4 before she attempted her last question incorrectly. Since a wrong answer gives her -1 point and her overall is -4
We add her overall and her point from last question which sums up to -5.
So sandras final score is -5
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Answer:
8
Step-by-step explanation:
let the number=x
8(x-2)=16(x-5)
divide by 8
x-2=2(x-5)
x-2=2x-10
2x-x=-2+10
x=8
Answer:
14, 22
Step-by-step explanation:
x+y = 36
2×x - y = 6
=> x = 36 - y
=> 2×(36 - y) - y = 6
72 - 2y - y = 6
-3y = -66
3y = 66
y = 22
=> x = 36 - 22 = 14
Answer:1.50
Step-by-step explanation:None
Answer:
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Step-by-step explanation:
<h3>Solution:</h3>
<u>From the given data</u>
<u>93% of the bar is silver :</u>
<u>Therefore, 6.51 Kg of Silver is there in the bar.</u>
